Yamaha WR45OFR service manual Setting, Carburetor setting

SETTING

T U N

EC700000

TUNING

EC710000

ENGINE

Carburetor setting

●The air/fuel mixture will vary depending on atmospheric conditions. Therefore, it is nec- essary to take into consideration the air pres- sure, ambient temperature, humidity, etc., when adjusting the carburetor.

●Perform a test run to check for proper engine performance (e.g., throttle response) and spark plug(-s) discoloration or fouling. Use these readings to determine the best possi- ble carburetor setting.

NOTE:

It is recommended to keep a record of all car- buretor settings and external conditions (e.g., atmospheric conditions, track/surface condi- tions, lap times) to make future carburetor set- ting easier.

WARNING

●The carburetor is a part of the fuel line. Therefore, be sure to install it in a well- ventilated area, away from flammable objects and any sources of fire.

●Never look into the carburetor intake. Flames may shoot out from the pipe if the engine backfires while it is being started. Gasoline may be discharged from the accelerator pump nozzle when the carbu- retor has been removed.

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