1983-1988 Genuine Yamaha Enticer/Excell III 340 Series Snowmobile Service Manual, Page 39Get this manual

1983-1988 Genuine Yamaha Enticer/Excell III 340 Series Snowmobile Service Manual, Page 39

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3 Lock the adjusting screw by tightening the nutELow Speed Tuning The carburetor is built so that low speed tuning can be done by adjusting the slow adjuster and the throttle stop screw Always install