If full throttle is only 3500rpm sounds like you are overpitched on the prop. The throttle is a cable. Take off cowl. Move binnacle throttle and watch the reaction at the motor. The O/B mechanism should be full range.
Most O/B's 3500-4000 rpms is the sweet spot for maximum fuel economy per mile traveled. WOT rpm's should be in the high 4000 rpms near 5000 rpm range.
Put O/B in neutral out of gear (usual pull out lever) and advance the throttle quickly. You should see it easily hit 4000rpms. This all should confirm mismatched prop.
Quote:
Originally Posted by BCinerie
Update, got boat in water Sunday , did the couple hours of low rpm stuff for break in etc. after a while we did some trolling with kicker to get hours on that also. Time for some throttle got up to 3500 Tom and 11 mph and that was it. So,we did the 8 mph tour more trolling did some hour. Tried again still only 3600 rpm. Called this am was told the throttle needs calibrated. I said well duh. 300 hp and 11 mph don't cut it ! So this weekend watch out ! They are going to work on it Wednesday ! Will report back. ��
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