Troubleshooting guide

6
REPAIR AND MAINTENANCE
❑ Chain and Tire Replacement – Mini Chopper
WARNING: To avoid a
pinch or injury, keep fingers away
from moving sprockets and chain.
WARNING:
Increasing
the tension too much can snap the
chain or bend the motor output
shaft. To avoid this, use caution
where tightening and carefully
check the tension after each 1/8 to
1/4 turn of adjusters.
1 Loosen the rear axle by attach-
ing wrenches to both axle nuts and
loosening counter-clockwise.
2 Loosen the brake anchor screw
(attached with the small bolt in
the long slot on the left side of the
frame).
Note: This system of adjusters is
common to motorcycles and BMX
bicycles. If you are not familiar
with it or do not feel comfortable
performing the adjustment, consult
an authorized Razor service
center or a qualified BMX bike or
motorcycle mechanic.
3 Tightening the adjusters clock-
wise tightens the chain; loosening
the adjusters counter-clockwise
will relax it. When loosening the
adjusters, you will have to nudge
the axle forward by tapping the
wheel with your hand to relax the
tension on the chain.
4 Turn both adjusters the exact
same amount, 1/8 to 1/4 turn at a
time, to maintain the wheel align-
ment. Once the tension is correct,
tighten the axle and brake anchor
bolt.
1 Loosen and disconnect the brake
cable anchor.
2 Loosen and disconnect the brake
housing anchor.
Note: Pay attention to the location
of the parts for when you reinstall.
3 Loosen the rear axle by attach-
ing wrenches to both axle nuts and
loosening counter-clockwise.
4 Loosen the chain adjusters
about 3-4 turns. Be sure to loosen
both adjusters an equal number of
turns.
5 Slide the wheel forward to
slacken and disengage the chain
from the wheel sprocket and motor
sprocket.
Note: Your hands will get greasy
doing this.
6 Remove wheel and replace
chain or tire. To reinstall wheel,
reverse these steps.