152
Maintenance
Drive Chain Inspectio n an d Adju stment (90cc Mo d e ls)
1. Check the amount of chain slack by moving the vehicle slightly forward to gain slack
at the top side of the chain.
2. Collapse the suspension with an adjustable (buckle type) trailer tie down. Fasten the
strap (A) around the axle and rear bumper tube.
3. Tighten the strap until a straight
line (B) can be drawn from the rear
axle to the gearcase output shaft
intersecting the swing arm pivot.
This establishes the tightest chain
position.
4. Pull down on the chain tensioner (C)
to move it out of the way, then
measure chain slack. It should have
1/4”-1/2” (6-12 mm) deflection.
5. If the chain needs adjustment, use the
procedure on page 154.
A
B
C
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