Drive Chain Slack Check; Drive Chain Slack Adjustment - Yamaha RAPTOR YFM660RP Owner's Manual

EBU00350

Drive chain slack check

Inspect the drive chain while all tires are
touching the ground. Check the slack at the
position shown in the figure. The normal verti-
cal deflection is approximately 27 ~ 37 mm
(1.1 ~ 1.5 in). If the deflection exceeds 37 mm
(1.5 in), adjust the chain slack.
a. Drive chain slack
EBU00917

Drive chain slack adjustment

1. Loosen the rear wheel hub upper and
lower nuts.
1. Upper wheel hub nut
2. Loosen the adjusting bolt locknuts on
each side of the swingarm. To tighten the
drive chain, turn the adjusting bolts in di-
rection a. To loosen the drive chain, turn
the adjusting bolts in direction b and
push the wheels forward. Turn each ad-
justing bolt exactly the same amount to
maintain correct axle alignment.
8-33
2. Lower wheel hub nut