1988 yamaha 225 excel oil pump adjustment on new style mikuni pump

wwb1969

Cadet
Joined
May 14, 2008
Messages
18
good morning i have a 1988 yamaha excel 225 that i have just installed a new style mikuni oil pump from yamaha with the one way check valves but they did not include any instructions for setting up the pump adjustment.any help would be greatly apprieciated.
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: 1988 yamaha 225 excel oil pump adjustment on new style mikuni pump

with the bottom throttle plate fully closed NOT AT IDLE but FULLY CLOSED adjust the link arm so the pump arm has about .010 clearence from the stopper pin.
 

wwb1969

Cadet
Joined
May 14, 2008
Messages
18
Re: 1988 yamaha 225 excel oil pump adjustment on new style mikuni pump

thank you very much
 
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