Yamaha YZ250F(S) Owner's Service Manual page 226

FRONT FORK INSPECTION
3. Adjust:
Drive chain slack
G
Drive chain slack adjustment steps:
Loosen the axle nut 1 and locknuts 2.
G
Adjust the drive chain slack by turning the
G
adjusters 3.
To tighten → Turn the adjuster 3 coun-
terclockwise.
To loosen → Turn the adjuster 3 clock-
wise and push wheel forward.
Turn each adjuster exactly the same
G
amount to maintain correct axle alignment.
(There are marks a on each side of the
drive chain puller alignment.)
NOTE:
Turn the adjuster so that the drive chain is in
line with the sprocket, as viewed from the
rear.
CAUTION:
Too small drive chain slack will overload
the engine and other vital parts; keep the
slack within the specified limits.
Tighten the axle nut while pushing down
G
the drive chain.
Tighten the locknuts.
G
EC36C000
FRONT FORK INSPECTION
1. Inspect:
Front fork smooth action
G
Operate the front brake and stroke the
front fork.
Unsmooth action/oil leakage → Repair
or replace.
3 - 33
INSP
ADJ
Axle nut:
125 Nm (12.5 m • kg, 90 ft • lb)
Locknut:
16 Nm (1.6 m • kg, 11 ft • lb)