Question about 1982 Yamaha XS 400 Special

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My 1982 yamaha precial 49cc it bogs out when i hit the gas how do i fix it? i can get it to start and run but i cant get it to get up over 15 hund. R.P.M. i have tried to clean the carb and the fuel sistem. and i have changed the spark plug, and still no change

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  • Yamaha Master
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Hav u tested batt for holding a charge-12.6 volts--also plug wire may be old and worn--testing all ignition components is good measure--carb may need ajust and cleansing

Posted on Oct 11, 2010

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Posted on Jan 02, 2017

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