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Spark advance problem

dabears34

New member
"Only when on the water and ru

"Only when on the water and running does this happen. At 3/4 throttle my 25HP gets that booooggggggg sound and won't accelerate. When in nuetral it will rev right up full throttle. Does this under a load/when in gear. I have the remote steering wheel and push pull cables for throttle and drive. I have in the past as an experiment removed the cover. While a friend drove and went to 3/4 throttle, I manually pushed the linkage forward for the spark advance and off to the races we went. Problem solved. Is this problem resulting in a need to adjust the throttle cable barrel at the motor? If so is there a predetermined amount of turns from the end of the cable the barrel should be?"
 
you tricked the engine into re

you tricked the engine into reving up. Your problem sounds more like a lean running engine. Richen the carb up an 1/8 to a 1/4 turn on the idle mixture or remove and clean carb
 
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