Speed Limiter Adjustment; Spark Plug Inspection - Yamaha YFM250XL(C) Service Manual

SPEED LIMITER ADJUSTMENT/

a
1 2

SPARK PLUG INSPECTION

WARNING
After adjusting the free play, turn the han-
dlebar to right and left, and make sure that
the engine idling does not run faster.
**********************************
SPEED LIMITER ADJUSTMENT
The speed limiter keeps the carburetor
throttle from becoming full-open even
when the throttle lever is pushed to a maxi-
mum. Screwing in the adjuster stops the
engine speed from increasing.
1.Adjust:
Speed limiter length a
**********************************
Adjustment steps:
Loosen the locknut 1.
Turn the adjuster 2 clockwise or counter-
clockwise until the proper length is
attained.
Speed limiter standard length:
12 mm (0.47 in)
Tighten the locknut.
WARNING
Particularly for a beginner rider, the speed
limiter should be screwed in completely.
Screw it out little by little as riding tech-
nique improves. Never remove the speed
limiter from the outset.
For proper throttle lever operation do not
turn out the adjuster more than 12 mm
(0.47 in). Also adjust the throttle lever free
play always to 3 ~ 5 mm (0.12 ~ 0.20 in).
**********************************
SPARK PLUG INSPECTION
1.Place the machine on a level place.
2.Remove:
Spark plug 1
CAUTION:
Before completely removing plug, use com-
pressed air to clean the setting areas to
prevent dirt particles from falling into the
engine.
3 - 15
INSP
ADJ
3