Yamaha YT175J 1982 Service Manual page 37

4. Measure each clutch spring and OFF
spring. If beyond tolerance, replace.
1.
Clutch spring
2. OFF
spring
Color code Q'ty Free length
Brown 8
15.2mm
Clutch spring
(0.60 in)
Green 4
34.6mm
OFFspring
(1.36in)
5. Clutch release mechanism adjustment
1) While holding nut 1, tighten the bolt
until tight, and lock it with nut 2.
2) If the bolt can be turned lightly with
your fingers and has no thrust play,
the adjustment is correct.
6. Trouble resulting from incorrect adjust-
ment
1) If the bolt is insufficiently tightened:
The clutch will drag due to play of
the bolt.
3-13
2) If the bolt is excessively tightened:
The clutch will slip even at high
speeds and clutch plates may burn.
7. Thoroughly clean the primary driven
gear assembly and spacer. Apply a light
film of oil on the bushing surface and
spacer. Fit the spacer into the bushing.
It should be a smooth, thumb-press fit.
The spacer should rotate smoothly
within the bushing.
8. Check splines on clutch boss for signs of
galling. If moderate, deburr. If severe,
replace.
NOTE: ______________________ __
Galling on either the friction plate dogs of the
clutch housing or clutch plate splines of the
clutch boss will cause erratic clutch opera-
tion.
9. Checking the ball
Check balls for excessive wear or
damage. If such wear is found, replace
balls.
10. Checking the ratchet mechanism
Check for damage or wear on each pawl
and dog. If damaged or worn to excess,
replace it. Check the pawl-spring for
damage and tension. If damaged or
fatigued to excess, replace it.