Qw a – Yamaha BLASTER YFS200N User Manual
Drive chain slack check
Inspect the drive chain while all tires are touch-
ing the ground. Check the slack at the position
shown in the figure. The normal vertical deflec-
tion is approximately 30~40 mm (1.2~1.6 in). If
the deflection exceeds 40 mm (1.6 in), adjust
the chain slack.
a. 30 ~ 40 mm (1.2 ~ 1.6 in)
Drive chain slack adjustment
1. Loosen the rear wheel hub bolts.
1. Upper wheel hub bolt (
2. Lower wheel hub bolt (
2. Loosen the adjuster locknuts on each side.
To tighten the chain, turn the chain
adjuster clockwise. To loosen the chain,
turn the adjuster counterclockwise and
push the wheel forward. Turn each
adjuster exactly the same amount to main-
tain correct axle alignment.
There are marks on each side of the
swingarm and on each chain adjuster. Use
them to check for proper alignment.