25 hp yamaha over rev

Zjb187

Cadet
Joined
Nov 30, 2009
Messages
13
Thanks to all the help eveyone has given me with my first boat. I've now gotten a tiny tach to decide on a propeller . I look at the manuel and it says idle is 950 +- 50 and wot at 5000 to 6000 recomended 5500... Mine is ideling at about 1170-1220 and wot at 6100-6200 I'm guessing that this is bad lol.. I looked to see if there's an idle adjuster and I don't see anything and the book says idle andustments- see yamaha dealer . The motor is a 2005 25 hp 4 stroke f25mshd any help is appreciated.. My prop is worn so I'm hoping the over rev can be fixed w a new prop but not sure about the idle.. Thanks
 

JUSTINTIME

Captain
Joined
Sep 2, 2006
Messages
3,284
Re: 25 hp yamaha over rev

to do idle the motor needs to be

in gear
warmed up
in water
 
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