Chain Housing - Yamaha SRX440 1980 Service Manual

1980 SRX440
b. Secondary spring tension
The secondary spring tension can be
changed by
moving
the spring position
from the free position in order to reset
the clutch shifting RPM as required. The
four holes are spaced at intervals of 30°.
Secondary spring
Spring wind
position
No.1
30°. 150°.270°
No.2
60°.180°
No.3
90°.210°
No.4
0°.120°.240°
Winding the spring more (e.q.. from 30°
to 60°) will increase the clutch shifting
rpm and
vise versa.
Snow conditions
will also require a change of the spring
tension in order to attain the standard
shifting rpm. The spring tension must be
greater on wet snow than on packed
snow.
4. Reassembly
a. Grease the sliding
sheave
boss and se-
condary shaft. and mount the sliding
sheave
on the shaft.
Recommended grease:
Molybdenum disulfide snowmobile
grease
b. Install the sliding
sheave
to the fixed
sheave.
and set the spring and spring
seat as specified. (See "Secondary
sheave
spring adjustment" of
above
item)
c. Install the circlip secondary fixed
sheave
boss slit.
5-9
N O T E : - - - - - - - - - - - -
After installation, thoroughly clean both fixed
and sliding
sheaves
so that they are free of
oil.
d. Install the secondary
sheave
assembly
and adjust the axial play and
sheave
off
set.
(Refer to 5-1-A-2.
"Sheave
off set ad-
justment")
e. Tighten the secondary
sheave
mounting
bolt.
Tightening torque:
50 Nm (5.0 m-kg)
E. Chain housing
1. Disassembly
a.
Remove'
the chain housing cap and
drain the chain housing oil.
b. Apply the brake and
remove
the
drive
sprocket nut and driven sprocket bolt.