Adjusting The Speed Limiter - Yamaha YFM50S Service Manual

ADJUSTING THE SPEED LIMITER

a
1
2
EBS00053
ADJUSTING THE SPEED LIMITER
The speed limiter keeps the carburetor throttle
from becoming fully-opened even when the
throttle lever is applied to the maximum posi-
tion. Screwing in the adjuster stops the engine
speed from increasing.
1. Measure:
• speed limiter length a
Out of specification → Adjust.
Speed limiter length
5.0 mm (0.20 in)
2. Adjust:
• speed limiter length
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a. Loosen the locknut 1.
b. Turn the adjuster 2 in or out until the speci-
fied speed limiter length is obtained.
Turning in
Turning out
c. Tighten the locknut.
WARNING
_
• Particularly for a beginner rider, the
speed limiter should be screwed in com-
pletely. Screw it out little by little as their
riding technique improves. Never remove
the speed limiter for a beginning rider.
• For proper throttle lever operation do not
turn out the adjuster more than 12.0 mm
(0.47 in). Also, always adjust the throttle
lever free play to 1.5 ~ 5.0 mm (0.06 ~
0.20 in).
L LLL L LLL L L LLL L
3 - 12
CHK
ADJ
M MMM M M MMM M M MMM M
Speed limiter length is
decreased.
Speed limiter length is
increased.
L LLL L L LLL L L LLL L
MMM
LLL