1998 Yamaha 25J, 30D, 25X, 30X outboards Factory Service Manual, Page 43Get this manual
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INSP ADJ
CARBURETOR LINK ADJUSTMENT
1 Lo ose th idle djust scre and fully close th throttle alv e
2 Lo ose th throttle le er securin scre of er and lo er carb uretors turnin clock is