Rotary Valve - Yamaha JT1 Series Service Manual

B. Checking the gear shift parts (Fig. 3-12-51
Checking the Gear Shift Return Spring. A broken or
fatigued gear shift return spring will impair the return
aciton of the shifting mechanism. Also, check for
a bent or damaged shaft.
C. Adjusting the gear shift arm
Adjusting or correcting the travel of the gear shift arm
to prevent improper shifting progression (excess feed
or insufficient feed of the gear shift arm)is accomplished
by
turning the gear shift return spring stop screw
(eccentric bolt) m or out.
In second or third gear the measurement A
&
A'
must be equal
(8 Screwdriver)
3-13 Rotary Valve
A. Removal
1) Remove the six valve cover set bolts and remove
the valve cover,
( (f)
Screwdriver)
ENGINE-Shift Mechanism, Rotary Valve
Fig 3-12-5
Gear shift arm A
Ad1ustIng screw
Fig. 3-12-6
Fig. 3-13-1
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