NOT REACHING TOP RPM ON ENGINE

MARCKYMARC1

Recruit
Joined
Jul 10, 2003
Messages
3
I have a 28 ft boat with twin 200's. I am only getting 4900 rpm on my counter rotating motor at full throttle with motor trimmed. The other motor gets 5800 rpm. Both have same prop. I checked the carbs and they are all opening to full. What else can I do?
 
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