1992-1993 Yamaha V Max 4 VX750 Snowmobile Factory Service Manual, Page 48Get this manual

1992-1993 Yamaha V Max 4 VX750 Snowmobile Factory Service Manual, Page 48

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CARBURETOR TUNING
1 Start the engine and run it at high speed to make sure the engine operates smoothly2 Stop the engine, and remove the spark plugThen, check the spark plug insulator CD color3

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