4. Maintenance & Adjustment
1. Gear Adjustment
Shimano’s 3-speed internal hub is a device that
allows the rider of the bike to change gears without
the worry of chain tension and derailleur setup and
maintenance. The hub can even switch gears when
the pedals are stationary. However, without being
adjusted properly, the Shimano 3-speed internal
hub will not work correctly, shifting between gears
and sometimes not allowing the bike to move at all.
Learn how to adjust your Shimano 3-speed hub at
home, and save time and money over taking your
bike to the local bike shop to be serviced.
1.1 Set your bike on its kickstand or in a dedicated
bicycle work stand so that it will not fall over while
you are working. You should be able to spin the rear
wheel freely to perform this procedure.
1.2 Twist the handlebar gear shifter to shift into
second gear, or the middle gear of the hub. Inspect
the rear wheel axle, where the gear shift cable
meets the push-rod housing. The housing should
have a clear plastic window with two red or white
lines marked on it, and a red indicator inside the
plastic. When the hub is adjusted properly, this red
marker will be in the center of the two markings in
second gear.
1.3 If adjustment is needed, loosen the cable
adjuster lock-nut on the cable where it enters the
hub using an 8-millimeter wrench. If the indicator
sits too far to the right between the markings,
tighten the cable adjuster until it is aligned
between them. If the indicator sits too far to the left
between the markings, loosen the cable adjuster
until it is aligned.
1.4 Tighten the cable adjuster lock-nut using an
8-millimeter wrench, then take your bike out for a
test ride. The hub should not skip, shift randomly,
or cease spinning for any reason. If these symptoms
still persist, the bike should be looked over by a
certified mechanic.
4. Cleaning your electric bike
Warm soapy water and a cloth can be used to clean
the frame of your bike, but care must be taken not
to immerse any of the electrical components; they
are rainproof but cannot be immersed in water. The
motor can be cleaned with a soapy cloth, but also
must not be immersed in water. The battery can be
cleaned with a damp cloth, then dried afterwards.
Note: in salty conditions it is essential to clean and
lube your bike regularly.
4. Maintenance & Adjustment
2. Chain Adjustment
Your bike has a gear hub that will not need to
tension your chain. However if the chain becomes
loose (more than 20mm of movement possible in
centre of chain between rear axle and crank axle) or
frequently comes off the drive wheel, you can easily
adjust the chain tension by loosening the rear axle
nuts slightly, and adjusting the hub axle backwards
further to tighten the chain tension to about 10mm
of movement in centre. Re-tighten the axle nuts to
correct torque setting.
3. Lubrication
1.1 Once a month lubricate all pivot points
on your derailleur and the derailleur pulleys with
suitable chain lube.
1.2 Every three months lubricate the brake
lever pivots, gears and chain with suitable oil.
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