Yamaha SL292C 1971 Service Manual page 67

f
Locked Main Jet
The GP2928 carb uret or uses a lock ed main jet in order to
set min imum f low rate of mix ture. The purpose of setting
the minimum mixt ure fl ow rate is t o prevent the engine
f rom overheat ing result ing from the main adjusting screw
which is tightened too much.
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ENGINE MAINTENANCE·
Carburetion and Fuel System
The main jet must be selected according to the temperature
and altitude of the area where the snowmobile is operated.
For det ai Is o n the main jet replacement procedure, refer to
the Technical Service Informat ion which will be published
later o n.
Plug screw
Main jet
Fig.8-19
Replacing the Locked Main Jet
Remove the plug screw.
To remove, use a small slotted head screwdriver.
Fig.
8-20
Fig. 8-21
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