Wisper 705 24 Inch Step Through Electric Bike Owner’s Manual

Owner’s ManualWisper 705 / 905 Torque 2019 ModelJanuary 2019 3rd edition

We strongly recommend that you read this entire manual before using your Wisper bike


Thank you for choosing a Wisper electric bicycle.Before you use your Wisper electric bike it is important that you read this manual carefully. If there is anything you do not understand completely, please contact us.Please observe traffic regulations, and do not lend your bicycle to anyone who is unfamiliar with it.In the UK the bicycle can only legally be used on the road by a person aged fourteen years or older.We strongly advise you to always wear an approved cycle helmet when riding your bicycle. If you are unfamiliar with cycling, we advise attending a cycle proficiency course prior to using your new bicycle on the public highway.When using any bicycle, it is important that you stay within safe limits; if you feel as if you are traveling too quickly, you probably are.Always test your brakes prior to using the bike, and remember the bike will not stop as quickly in the wet as it would in the dry!Before you use the bike for the first time, please make absolutely certain that it has been correctly assembled. You can do this by either taking it to your nearest cycle engineer or if you are proficient in cycle mechanics, inspecting it yourself. In particular, you must make sure that the pedals, saddle, handlebars, and any self-assembled items have been fitted correctly.Avoid consuming alcohol before you ride your electric bike. The use of alcohol greatly reduces reflexes and limits your ability to ride safely.If you need to replace your battery, please either dispose of it properly or preferably send it back to us at Wisper or one of our distributors and we will make sure it is properly recycled.Above all, enjoy your Wisper bike, happy cycling!Amps Electric Bikes Ltd

Caring for your Wisper bike and pre-use checks

Your Wisper bike has been thoroughly tested at the factory prior to delivery and has undergone a redelivery inspection by your Wisper Stockist.It is very important that you check the bike thoroughly before its first use. Equally important are frequent and regular spot-checks, as they will protect you and your Wisper bike.Please read this manual carefully. Only on full understanding all of the functions of this electric bicycle should you attempt to use it.2.1 Before you set off for the first time2.1.1 Check the handlebars and handlebar stem are properly tightened.2.1.2 Check all other nuts, bolts, and fixings are properly tightened.2.1.3 Check brakes are functioning properly.2.1.4 Check tire pressures are correct and tires are not damaged.2.1.5 Check reflectors and lights if fitted, are functioning properly.2.1.6 Make sure the battery is fully charged.2.1.7 Load the battery into the bicycle and turn it on with the switch located at the rear right-hand side of the battery. To remove the battery turn the battery key hold in the unlocked position and slide the battery out. Remove key from the battery and keep safe during operation of the bike.2.1.8 Turn on the bike by pressing the on/off switch adjacent to the left-hand grip for two seconds. (Turn off the bike by repeating the same process).

The bike will be ready to ride and the LCD will activate showing battery state, assist level, time, trip, and speed. Exerting pressure on the pedals or twisting the throttle will now activate the motor.

2.1.9 To avoid unplanned acceleration, always make sure that the LCD assist level is set to 0 when mounting, dismounting, and turning the bike off when leaving it unattended.To set the assist levels, toggle with the + and – buttons (see fig 1)2.1.10 For full information regarding the LCD display please refer to a separate handbook available from Amps Electric Bikes or your retailer.2.1.11 Remember to validate your warranty by visiting www.wisperbikes.com/mywarranty and filling in your details.2.2 Before each useIt is important you check your bike prior to each time you use it. Checks should include the following:(If you do find any damage or problems, do not use the bike until the problem has been solved or you have had the faulty item checked by an electric bike mechanic or your retailer).2.2.1 Check the tires for any visible damage.2.2.2 Check the tire pressures.2.2.3 Check for any loose nuts, bolts, or fixings.2.2.4 Check the brake functions.2.2.5 Check the electronic functions.2.2.6 Check the reflectors are in place and the lights are working.2.2.7 Check the battery for any visible signs of damage.2.3 Battery care2.3.1 Your Wisper bike comes with a high-quality lithium-ion battery. All lithium batteries need to be looked after to ensure years of full use. The latest Wisper 575Wh batteries come with new technology installed to assist you in looking after your battery and will be dealt with separately. Following these easy steps will ensure the long life of your battery2.3.2 Recharge your battery after every use if possible. Keeping your battery charged extends its life and your bike is always ready to go.2.3.3 You do not have to “condition” your battery by charging and discharging before its first use.This was the case with old lithium-ion technology but is not necessary on modern batteries2.3.4 Never leave your battery completely discharged for more than 24 hours. Voltage dropping below the minimum for any length of time will cause serious damage to your battery cells.*2.3.5 Recharge your battery every month even if you are not using the bike. Most lithium Ion batteries will continue to discharge even when the bike and battery are turned off (see above). If your battery falls below minimum Voltage it may not be recoverable.*2.3.6 Do not expose the bicycle or battery pack to fire, heat sources, acid or alkaline substances.2.3.7 When leaving your bicycle during hot weather, always leave it in a shaded well-ventilated area.2.3.8 For best results, always recharge and store the battery at room temperature.2.3.9 Before unloading the battery, make sure it is turned off and unload the battery using its handle.2.3.10 Further information on user responsibilities and battery maintenance is included in the warranty section of this manual.* The most common cause of battery failure is the owner not keeping to points 4 and 5 above.This is the most common reason for customers to need to replace batteries. This is particularly noticeable in the spring when customers are using their bikes for the first time in the new year. We get most calls regarding failing batteries during this period.IMPORTANTIf your battery is damaged due to your leaving it discharged, or not recharging when advised as per this manual your battery is not covered by our warranty.Battery safety2.3.11i. Never leave a battery connected to the charger or mains power overnight.ii. Never recharge a battery outside, in damp conditions, or in temperatures less than 0 degrees centigrade.iii. Never open a battery case, try and fix the battery or give it to anyone other than a registered Wisper Stockist for maintenance. (Failure to comply will void the warranty)iv. If a battery is, or appears to be damaged or overheating for any reason, do not use the bike and immediately return the battery to your retailer for advice and a safety check.IMPORTANT Ignoring any of the safety rules above could cause serious injury or fire.2.4 Recharging your battery2.4.1 Before charging, make sure the charger is turned off and connect your battery to the charger at the charging socket. Plug the charger into a mains socket and turn on the mains socket.A red lamp will light up on the charger to indicate the battery is charging. When the red light turns green, the battery is fully charged. To optimize battery life, leave the charger connected for a further hour and then turn off the charger and disconnect it from the mains after charging. Always disconnect the charger from the mains before disconnectingthe charger from the battery. It is possible that the battery will take up to twelve hours to charge on the first three charges.2.4.2 When charging the battery, always do so in a well-ventilated area.2.4.3 Do not leave the charger connected to the mains when not in use.2.5 Water2.5.1 Your electric bicycle is rain and splash-proof and can be used in all weathers.2.5.2 The electrical components of the bicycle, such as the motor, battery, and controller, must not be submerged in water.2.6 Maintenance and adjustments2.6.1 IMPORTANT! Do not attempt to open the casings of the battery, motor or controller. It could be dangerous and all warranties will become void. If you experience a problem, contact our service department or your Wisper retailer.2.6.2 Wheel spokes should be adjusted after 300 miles of riding. Handlebar and saddle tubes should never be raised beyond the maximum permissible, indicated by a safety line around the tubes. The recommended torque (tightness) of crucial fixings is as follows:

Front axle nuts. 46N.m
Back axle nuts. 70N.m
Handlebar and stem clamp bolts. 12N.m
Handlebar stem expander bolt. 10N.m
Seat pillar clamp nut/bolt. 5-8 N.m
Seat clamp nuts. 24N.m
Crank axle Allen bolts. 40N.m
Gear shifter nuts. 4N.m
Rear carrier nuts. 8N.
Mudguard bracket nuts. 8N.m

Other general torque settings depend on the thread size. M4: 2.5-4.0N.m, M5: 4.0-6.0N.m,M6: 6.0-7.5N.m.2.6.3 Your bike has a rear derailleur that will automatically tension your chain. However, if the chain becomes loose or frequently comes off the front chainwheel, please seek advice from your Wisper dealer.2.6.4 Brake levers should lock the wheels when compressed halfway between their open position and touching the handlebars.2.6.5 Warning: Handlebar hand grips or tube end plugs should be replaced if damaged, as bare tube ends can cause injury.2.6.6 Front and rear brake pads must be replaced if the pad material wears to less than 1mm.IMPORTANT! braking distances increase on wet or icy roads.2.6.7 Lubrication:6.7.1. Lubricate all pivot points on the derailleur and chain with light oil or chain lube on a regular basis.6.7.2 Once a year, have your dealer re-grease the headset bearings, front wheel bearings, and pedal bearings.2.6.8 Recommended tools for proper maintenance:Torque wrench with lb/in or N/m gradations2, 4, 5, 6, 8mm Allen wrenches9, 10, 15 mm open-end spanners and 15mm box end spanner14, 15, and 19mm socketT25 Torque wrenchNo. 1 Phillips head screwdriver, bicycle tube patch kit, and tire pump2.7 Technical specifications & performance

Motor  High efficiency, 250W ultra hi torque brushless rear-wheel-drive Hybrid Torque drive system designed to deliver maximum power to the rear wheel smoothly, silently, and efficiently.
Battery  Lithium with advanced battery management system (BMS)Low range 375Wh 2.6kgMedium range 575Wh 3.4kgLong-range LG 700Wh 3.6KgBoth batteries use identical battery cases so are interchangeable between705Torque, 806Classic, and 905Torque Wisper bikesRemote Control Service System (RCSS) on 575Wh onlyDeep sleep mode. Protects battery during times of non-use on 575Wh only
Battery case Polycarbonate/ABS mix, nonconductive for extra safety, conforms to the 2013 90cm drop test.
Controller Sine wave controller for almost silent running
Mains charger Lithium 42V output intelligent charger communicates with battery  management system (BMS), auto stop when fully charged 2A, Charge time 2.5 to 8hours depending on battery state
Connections All electronic components and motor wheels have individual connectors for ease of servicing
Assisted range 375Wh battery Average 20miles/32kilometers    Max 50miles/80kilometers575Wh battery Average 30miles/48kilometers    Max75miles/120kilometers700Wh battery Average 40miles/64Kilometers  Max100 miles/161kilometers
Assistance 1. Throttle only: to 4mph/6kph2. Throttle assist: complete throttle use when pedaling forward3. Pedelec: with 4 levels of assistance power, F non torque sensor, and safe mode4. Twist throttle to disengage torque sensor for more power on flat.
Max speed 15.5mph/25kph with powered assistance
Controls  Backlit LCD display panel with bike and light on/off switchPower assistance: four levels and safe modeSpeedo, Range, Trip, Battery state, Clock
 Bicycle weight 20.5kg without battery Including battery and all accessories375Wh: 23kg575Wh: 24kg700Wh: 24.5kg
Load capacity 135kg/290lb/20st 9lb
Frame  Hand welded, 6061 Alloy T4 and T6 tempered
Frame size 705 18” 46.5cm  905 20” 50cm
Finish  Graphite Silk painted and lacquered, three-stage oven hardened
Forks  Suntour NCX/SR hydraulic suspension forks
Seat post Promax 350mm black anodized aluminum
Saddle  Wisper comfort saddle black
Handlebars Promax black anodized alloy with ergo support grips
Stem  Promax black anodized alloy quick release adjustable
Kickstand Black anodized alloy
Gears  SHIMANO Acera 8 speed derailleur with 8-speed selector 8 speed Shimano or Sunrace rear sprocket
Chainring 170mm 52 tooth
Chainguard Full, alloy Graphite Silk paintwork
Chain  KMC Z51RB rust resistant
Cranks  Anodised Black alloy
Dropouts Stainless steel cassette
B Bearing Sealed bearing with torque sensor
Pedals  Wellgo city and touring style alloy non-slip, sealed bearings
Brakes  Wisper Hydraulic vented 180mm disc brakes front and 160mm rear
Rims Alloy double-walled 26” x 1.5”
Spokes  13g black anodized
Tyres  Kenda 1088 26” 1.75 high puncture resistance with Kevlar and wall reflector
Mudguards Polycarbonate shatterproof
Lighting Front: Spanninga 36V 15W LED super bright, power from bike e-systemRear: 36V light, power from bike e-systemReflectors: front white, rear red, wheels orange, and pedal reflectors
Rear Rack Certified to 25kg
Metal fixings A4 grade stainless steel or alloy

2.8 Simple Troubleshooting


Possible reason


Top speed too slow 1.  Low battery voltage2.  Handlebar control problem3.  Damage to the motor driveline 1. Recharge battery fully2. Call service3. Call service
Power on, but motor not working 1.  Battery not connected2.  Motor connection damaged3.  Handlebar control problem 1. Reinstall battery2. Call service3. Call service
Low range after recharging the battery 1. Tyre pressures too low2. Undercharge or charger fault3.  Battery capacity loss or damage4. Hill climbing, frequent stops, strong headwinds, overloading. 1. Check pressures2. Recharge completely or have the charger inspected3. Replace the battery

Controls and equipment

In this section, the functions and any specific maintenance needed on all the main controls and ancillary equipment are described.3.1 Battery on/off switch and lock3.1.1 Your Wisper bike is supplied with two identical keys. The key locks the battery on the bike.3.1.2 The battery is connected to the electrical system of the bike automatically when you slide the battery into the rack. To turn on the bike’s electrical system, press 1 on the switch located on the right-hand side at the rear of the battery. To turn off the power, press 0.

3.1.3 When the battery has been turned on, the bike is now ready for use. The on/off button (the top button c- on the handlebar control) isolates the power from the bike.

When the on/off button is pressed for 3 seconds the LCD symbols will become visible. When the on/off button is pushed again for 3 seconds, the LCD symbols will disappear – you have turned the bike “off”. When the bike is “off” you will not get any assistance from the battery and motor and the bike is effectively an unpowered pushbike.3.1.4 To lock the battery into the bike frame, slide the battery into the battery holder in the rack until you hear a click. To unlock the battery, turn the key fully anticlockwise and hold it in this position whilst siding the battery out.3.1.5 The battery can be charged either on or off the bike.3.2 The ON/OFF button and Light button3.2.1 To turn the power on so the pedelec system is operational, simply press the on/off button (marked with a-c-) on the handlebar control for 3 seconds – the LCD symbols will become visible showing the power is on. When the on/off button is pushed again for 3 seconds and the LCD symbols become invisible you have turned the bike “off”. When the bike is “off” you will not get any assistance from the battery and motor and the bike is effectively an unpowered pushbike. If the bike is left for ten minutes without being ridden, the bike will automatically turn off. The battery capacity indicator lights provide an indication of the battery capacity remaining with four bars indicating the battery is at full capacity. The display also incorporates a diagnostic function as described above.3.2.2 The LIGHT button is the + button found under the on/off button. If you press and hold down for 3 seconds when the bike’s power is on, the LED headlight and rear light will illuminate.The LCD display will also become backlit. Press it again for 3 seconds to switch off the lights.The power for the lights comes from the bike battery, but due to the low power consumption of the LED lights, you will not noticeably reduce your range.IMPORTANTDo not press the – (minus) button to turn off the lights as this will activate the walk along with mode and the bike will start to move forward.3.3 The Throttle3.3.1 The twist grip throttle can be found on the left-hand side of the handlebars. Further details of the operation are provided below. The twist and go throttle has two functions:i. To power the bike sufficiently to help when walking the bike to a maximum of 4mph 6km/h. This can also be achieved by pushing the – button for 3 seconds and holding.ii, To increase the power to the motor when on a level road. The throttle takes the bike out of torque sensor mode. Your range will decrease if you use this option.

3.4 Torque sensor3.4.1 When you first ride your Wisper bike, you will notice that the motor will start working as soon as you put pressure on the pedals. This is the standard or torque mode. The more pressure you put onto the pedals the more powered assistance you will receive.3.4.2 You will find the assist buttons (marked with a + and a -) on the handlebar control. Each time the + button is pressed, the LCD will move between 0 and H, and the corresponding power level increases in increments of 25%. Setting 4 provides 100% power. The default level is set to 1 when the bike is first turned on. We recommend that you press, the – button once before you mount the bike so the motor and torque sensor is deactivated. Once on the bike, press the + button once to activate the assistance mode. You can start off at any level, if you are on a hill, for instance, you may want to start in 2,3, or Setting 4 is generally used when you need the maximum amount of assistance from the motor, but this will drain the battery the fastest. Lower settings are used when you do not need assistance at 100% power. In high traffic situations or poor conditions such as ice and snow, instant full power could be dangerous. Power settings can be hung when the bike is stationary or when on the move.3.4.4 Setting H is used to turn off the torque sensor. On setting H as soon as the pedals are rotating you will receive maximum assistance from the bike. You will not get any assistance on start off until the pedals have been turned ¼ of a revolution. H setting should only be used when you want maximum assistance from the bike without putting much pressure on the pedals. Using the H setting will reduce your range by up to 30%IMPORTANT! Make sure your throttle and handlebar grips are always intact and in good condition.Uncovered handlebar tubes can be very dangerous.3.5 Battery capacity meter, riding style, and affect on a range3.5.1 The range of the bike (distance covered between recharging of the battery) is greatly influenced by the level of assistance selected, the amount of pedal assistance provided by the rider, and the use of the throttle.3.5.2 If a high level of assist is selected, then the range of the bike will be reduced compared to using a lower level of assist.3.5.3 The Wisper torque system detects the speed the pedal cranks are turning and the amount of pressure being exerted on the pedals. This information is fed into an onboard computer (controller) to give the rider the most natural riding experience possible.3.5.4 The optimum range is achieved when the rider pedal effort is maximized and an ideal situation is for the rider to aim to match the power being provided by the bike on an equal basis.3.5.5 The battery capacity indicator is provided to give an approximation of the battery capacity remaining. Each bar on the LCD approximates a ¼ of the capacity. However, this indicator relies on sensing battery voltage that will rise and fall depending on the amount of power being demanded at any given time, ambient temperatures, etc, hence the meter should only be used for indication purposes.3.5.6 The battery capacity indicator, built into the top of the battery (four LEDs) provides a similar indication and operates on the same principle.3.5.7 Under heavy power situations (full throttle or high levels of assist) the battery voltage will temporarily dip resulting in the capacity meter showing a lower level of charge. When the heavy power usage is reduced, the capacity meter will rise again as the battery naturally recovers its voltage.3.5.8 During the discharge period of the battery, the voltage will drop from an initial voltage of nearly 42 Volts to a minimum of 31.5 Volts. The bulk of the discharge period will be in the range of 38 to 36 Volts which provides the optimum performance for the bicycle. Hence due to this wide range in voltage, the performance of the bike will vary depending on the state of charge of the battery. To achieve the best possible performance, it is better to start a journey with a fully charged battery and recharge it at the end of each journey.3.6 Brakes3.6.1 Hydraulic disc brakes are fitted to the front and rear wheels of the bicycle. Hydraulic disc brakes offer several advantages over traditional rim brakes, including better braking in wet, muddy, or other adverse conditions, less braking power fade over extended downhill braking, and the ability to continue breaking even if your rim becomes bent or distorted.3.6.2 Details of how to adjust and maintain your brakes are as follows:3.6.3 Regularly inspect the brake pads for wear. If they have reached the wear limit of 1mm, replace them immediately.3.6.4 Front brake, remove the caliper from the fork leg, complete with the mount adapter by removing the two 6mm Allen caliper fixing screws. For the rear brake, remove the caliper by removing the two 6mm Allen caliper fixing screws on the bike frame. The pads can then be removed by unscrewing and removing the pad retaining screw (which passes through the tabs of the brake pads) using a 3mm Allen wrench. Then lift the pads complete with the spring out of the rotor slot in the caliper body.Warning! Do not loosen any other screws on the caliper.3.6.5 To refit the pads, hold the pads complete with spring as an assembly and insert them into the caliper slot with the metal backing towards the pistons. Refit the pad retaining screw ensuring it passes through the holes in the pad tabs and through the hole in the spring and tightens to 3– 5 Nm. Refit the caliper loosely using the two Allen screws, apply the brake lever, and tighten securely to 6 to 8 Nm. whilst continuing to apply the brake lever. (N.B. use of a thread locking compound is recommended on the caliper fixing screws).Warning: If you are unsure about any part of the brake installation process you should seek advice from a Wisper service center or a qualified mechanic.Caution: The pads and rotor must be kept clean and free from oil or grease-based contamination. If the pads become contaminated you must discard them and replace themwith a new set. A contaminated disc should be cleaned with a proprietary brake cleaning solution.3.7 Stem and handlebar clamp 905 and 7053.7.1 Your bike has been fitted with an adjustable handlebar and stem clamp that allows you to change the angle and height of the bars to find the most comfortable riding position.3.7.2 The handlebars can be adjusted before you use the bike by slackening the four clamp bolts (shown in the picture below) using a 4mm Allen key. Once a comfortable position is achieved, securely tighten the four clamp bolts evenly, ensuring an even gap is left between the two halves of the clamp housing, and the serrations on the two halves of the clamp mate correctly with the fixed part of the stem. Tighten the four bolts to a torque setting of 12Nm

3.7.3 To alter the rake of the handlebars, slacken the central Allen screw in the side of the stem and rotate the stem up or down until the desired position is obtained. Retighten the Allen screw securely to 17-18.5 Nm.

3.7.4 Some early 705 models3.7.5 Some early 705 models were fitted with a quick release adjustable handlebar and stem clamp that enables you to change the angle and height of the bars to find the mostcomfortable riding position.3.7.6 The handlebars can be adjusted before you use the bike by loosening the bolts on the stem and stem handlebar clamp. When loosened, lift the lever and adjust to the riding position that suites you best.3.7.8 When you have achieved the most comfortable riding position retighten the bolts and check the stem and handlebars will not move.IMPORTANT do not ride the bike unless the lock has properly re-engaged.3.8 Front suspension forks 3.8.1 Your bike has been fitted with Suntour NCX/SR hydraulic suspension forks3.8.2 Your forks can be pre-tensioned to suit your weight and riding style.Please ask your Wisper stockist to assist.3.9 The connectors3.9.1 All electronic components have individual connectors, this allows for the easy removal for diagnosis, repair, or replacement of any of the electronic parts. The connectors, being a push-fit are simple to disconnect or reconnect and click into position when fully engaged. Each connector has a different number of pins and an alignment arrow, so it is important to ensure the connectors are only mated in their original positions, damage may occur to the pins if this procedure is not followed.

3.10 Quick release saddle height adjustment3.10.1 Your Wisper bike has been fitted with a quick-release saddle post fitting to facilitate the movement of the saddle height.3.10.2 It is important that the knurled nut on the fitting is tightened so the post will not move in the bike tube. Make this adjustment with the quick release lever in the open position.3.10.3 Adjust the seat to the correct height and close the lever firmly. When you sit on the saddle there should be no vertical movement at all in the saddle post beyond the seat post suspension movement. Never apply grease to the saddle post.

3.11 Rims and spokes3.11.1 It is essential to have your spokes checked and tightened after 300 miles. This is a free service provided by your supplier. If this service has not been undertaken at the correct time, this may cause damage to the wheels and spokes that will not be covered under our Warranty.3.12 Chain and drive wheel removal3.12.1 To completely remove the rear wheel, it is necessary to disconnect the main motor cable connecting the motor to the bicycle electrical system. This operation is best achieved by turning the bicycle upside down.3.12.2 Locate the motor cable where it emerges from the center of the wheel axle on the left-hand side of the bicycle, slide back the top hat protector to locate the wheel nut.

3.12.3 Trace the route of the motor cable along the rear stays and locate the quick-release motor cable connector shown in the image above. Disconnect the two halves of the connector, taking care not to strain the cables, and unclip the motor cable from the frame. Note the alignment marks on the two halves of the connector.3.12.5 Loosen the two large motor axle nuts and remove the nut from the right-hand side, taking care to note the position of any tab washers fitted. Unscrew the left-hand nut as far as is possible towards the cable exit from the motor axle, being careful not to damage the cable.3.12.6 Lift the wheel from the frame dropouts, being careful not to snag or strain the motor cable.3.12.7 Installation is the reverse of the above. Take care to locate the tab washers correctly in the drop-out slots and tighten the axle nuts to the torque specified in the manual. Reconnect the two halves of the quick release connectors, taking care to ensure the pins and alignment arrows align correctly. Re-clip the cable to the frame, ensuring that the cable cannot rub against the tire and that the cable exits in a downwards direction from the axle to avoid water ingress into the motor. Refit the rubber top hat cover.Because the bicycle has a rear derailleur, the chain will be automatically adjusted.3.13 Derailleur and gear change3.13.1 Full details on how to adjust and maintain your derailleur can be found in the Shimano manual.If the difficulty is experienced with changing gear after the initial operation of the bicycle, it is likely that some cable stretch will have occurred in the gear change cable. To compensate for this turn the knurled adjuster shown in the center left-hand side of the image below by pulling it away from the outer cable stop in the direction of the cable towards the rear of the bicycle and turning it ½ turn anticlockwise when viewed from the rear. This will compensate for the cable stretch. If necessary, repeat the operation again until smooth gear selection is obtained, or return your bicycle to your Wisper dealer for further adjustment.

3.13.2 To change gear, use the 8-speed rapid-fire gear shifter located on the right side of the handlebar. The two levers located underneath the shifter can be pulled and pushed to select the gears over the range of 1 to 8.

Warranty, battery maintenance, and user responsibilities

Repair or replacement of componentsIMPORTANT! To validate this warranty, the retail customer must register the bike at www.amps.bike within 14 days of purchase.Only use this product in accordance with this user manual. Wisper offers a limited warranty on the following items.

Main frame Ten years
Motor shell, Hub motor, Controller and Charger Two years
Electronic handlebar controls and electrical connections Two years
Paintwork (excluding accidental or deliberate damage) Two years
Battery capacity loss of more than 30% Two years
Lights and lighting system One year
All other parts, other than consumables not shown above One year

Terms and conditions


If the product has a quality fault within 15 days of delivery, the part will be repaired or replaced or in exceptional circumstances, we may replace the whole vehicle.


The period of assurance shall commence from the day delivery was made to the retail customer, or from the day the retail customer collected the bike from the retailer.


To validate this warranty, the retail customer must register their bike within 14 days of purchase.

Exceptions to Limited WarrantiesYour Wisper bike may not be covered by our warranty for any of the following reasons:

1 Damage resulting from misuse, not maintaining the vehicle or not following the guidelines within our user guide, or using the vehicle for any kind of competitive sport.
2 Accidental or deliberate damage.
3 Damage due to private repair or alteration by the user or unauthorized service center.
4 Failure to produce invoice or proof of purchase.
5 Spare parts and components are worn in normal use.
6 Failure to register bike within 14 days of purchase.
7 Failure to have your bike safety checked and the spokes tightened within 300 miles or three months of purchase.

4.1 Battery maintenance and user responsibilities4.1.1 Your Wisper bike is equipped with a powerful, high-quality lithium-ion battery. Lithium-ion is recognized as being the very best type of battery for electric bicycle use.4.1.2 All lithium-ion batteries must be well cared for to optimize useful life and range. It is the responsibility of the bike owner/operator to ensure the battery is looked after properly.Incorrect use or storage of your battery may cause damage and void your warranty.4.1.3 It is not unusual for a well-maintained battery to last for several years. Though your bike will feel less powerful as the battery gets older, and the range will diminish, you can continue using the battery for many years to come.A key point to remember when choosing a battery is to check the battery capacity (V x Ah = Wh the battery’s capacity) i.e.16Ah x 36V = 576Wh. When such a battery loses 30% of its capacity, it will still have nearly 400Wh left, still more than a new 36V 10Ah (378Wh) battery. Choosing a larger battery not only gives you more power and range but is often more economical in the long term.4.1.4 The key to having a long-lasting battery is to look after it. This means never leaving your battery fully discharged and always conditioning the battery when not in use i.e. in the winter.4.1.5 If a battery is not cared for as per our instructions, it will not reach its optimum performance and may not be covered by our warranty.We reserve the right to check batteries claimed under warranty to ensure they have been maintained as per our instructions.


After-sales service is available through your retailer. If you are unable to contact your retailer please contact our Wisper Support team [email protected]Amps Electric Bicycles LtdUnit A2Watery LaneKemsingKentTN15 6PW[email protected]www.amps.bikeCopyright January 2019 Amps Electric Bikes Ltd

Pre Delivery Inspection checklist

The PDI is a critical part of the overall Quality Assurance process and must be completed by the supplying dealer followed by a test ride and sign-off before passing the bike to the customer.The following items below are a generic list for all current Wisper models and must be covered during the PDI.

ItemCheck off by No.

Activity Mechanical Parts


1 Check front and rear wheel for alignment and run out Tighten spokes if necessary
2 Check the tightness of rear axle nuts and front quick release Tighten to torque setting in the user manual
4 Check tyre pressures front and rear Inflate to correct pressure
5 Check and adjust the action of front and rear brakes Ensure there is no noise or squeal
6 Check smooth action and adjustment of front suspension forks
7 Check adjustment of bearings in the headstock Adjust if necessary
8 Check security of all handlebar stem fixings and clamps Adjust to suit customer preferences
9 Check front and rear mudguards for security and clearance from tires
10 Check all cables are clipped securely and safely Check motor cable cannot rub against the tire
12 Check pedals have been fitted correctly and tightened fully Note left and right-hand threads
13 Check pedal cranks have been tightened fully on the bottom bracket axle. Tighten to torque setting in user and service manual
14 Check smoothness and running clearance of bottom bracket
15 Check seat post quick release clamp is properly in place and secure and the saddle is correctly fitted. Adjust as necessary
16 Check smooth operation of gear change on either derailleur or hub gear and ensure all gears can be selected Adjust as necessary
17 Ensure side stand supports bike correctly and does not interfere with other moving cycle parts
18 Ensure motor wheel turns smoothly and quietly when rotated by hand in forward and reverse direction Some additional resistance will be felt when rotated in the reverse
19 Ensure correct chain tension
20 Ensure chain guard is not rubbing on models equipped with guard
21 Ensure all reflectors are in place on pedals, wheels, etc
  Electrical Parts
1 Fit and check the correct operation of front and rear lights
2 Check connections for installed components
3 Check throttle returns smoothly to the closed position Adjust if necessary
5 Check functionality of LCD display Includes a selection of four power assist levels, speed readout, and all functions are correct as described in the user and service manual
7 Check battery locates properly and locks in place securely Ensure keys are present
10 Charge battery off the bike and check charger and battery functions correctly Check status lights on the battery
Road Test
1 Road test the bike in a safe environment to test the functionality of both electrical and cycle systems as described in the user manual – check noise and performance levels Adjust/correct after a test ride.
2 Notify Amps support if any manufacturing faults are identified, providing photographs if possible of any faulty components.
3 Run through the bike operation, battery charging, and storage instructions and offer safety advice to the customer
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Copyright December 2018 Amps Electric Bikes Ltd

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