instructions for adjusting speed linkage

novice_1

Recruit
Joined
Aug 21, 2003
Messages
1
I am trying to locate an instruction manual for control adjustments for speed. I just purchased a 15ft fiberglass boat with a 1977 Merc 50hp motor. pushing the controls full forward only seems to run motor slightly above idle.
 

snapperbait

Vice Admiral
Joined
Aug 20, 2002
Messages
5,754
Re: instructions for adjusting speed linkage

Remove the air box cover in front of the carbs(if equiped), engauge throttle lever in forward gear to its wide open position (with engine NOT running, of course).. See if the throttle blades in the carburators are fully opening...
 
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