8
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
Water
2.5.1
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 motor, battery, and controller, must not be
submerged in water.
2.6
Maintenance and adjustments
2.6.1
IMPORTANT!
Do not attempt to open the casings of the battery, motor or controller. It
could be dangerous and all warrantees will become void. If you experience a problem,
contact our service department or your Wisper retailer.
2.6.2 Wheel spokes should be checked 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 recommendedtorque (tightness) ofcrucialfixingsisas follows:
Frontaxlenuts.
46N.m
Backaxlenuts.
70N.m
Handlebarand stem clampbolts.
12N.m
Handlebarstemexpanderbolt.
10N.m
Seatpillarclampnut/bolt.
5-8N.m
Seatclampnuts.
24N.m
Crank axleAllen bolts.
40N.m
Gear shifter nuts.
4N.m
Rear carrier nuts.
8N.m
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 cassette 8 speed gear clusterand a derailleur, the chain tension will be
adjusted automatically. However, if the chain becomes loose or frequently comes off the
front chain-wheel, please seek advice from your Wisper dealer.
2.6.4 Brake levers should lock the wheels when compressed half way between their open position
and touching the handle bars.
2.6.5 Warning: Handlebar hand grips or tube end plugs should be replaced ifdamaged, as bare
tube ends can cause injury.
2.6.6 Front brake pads must be replaced if the pad material wears to less than 1mm.
