Yamaha Engine Reliability

A conversation among Whalers
boatsmith
Posts: 40
Joined: Mon Oct 19, 2015 3:58 pm

Yamaha Engine Reliability

Postby boatsmith » Wed Jul 27, 2016 6:03 pm

[This author is] considering the purchase of a 2000 13-footer with a 2004 Yamaha F40. The 2004 Yamaha F40 engine has carburetors. What is the reliability of the 2004 Yamaha F40 engine? Thanks.

Masbama
Posts: 355
Joined: Thu Oct 15, 2015 8:33 pm
Location: Mobile, Al

Re: reliability of a 2004 Yamaha 40 hp fourstroke engine

Postby Masbama » Wed Jul 27, 2016 11:39 pm

If it runs well when testing it should be ok. Any 12-year-old engine is a bit of a risk.

PJMSport15MY1984
Posts: 40
Joined: Fri Oct 23, 2015 2:20 pm
Location: Marysville, WA

The Yamaha 40 hp fourstroke engine

Postby PJMSport15MY1984 » Thu Jul 28, 2016 4:46 pm

Before purchasing check the compression of the motor. Good Luck. --Paul

alloyboy
Posts: 24
Joined: Thu Dec 24, 2015 8:15 pm

Re: reliability of a 2004 Yamaha 40 hp fourstroke engine

Postby alloyboy » Sat Jul 30, 2016 11:25 am

A 2004 F40 has a smaller idle jet than did earlier F40's. It can be a bit fussy then when it comes to starting easily and idling well. Ethanol does not make life any easier. If you were to have a carburetor problem then many have been known to install a larger-size idle jet.

Otherwise, the F40 is as reliable and as dependable as any other Yamaha outboard motor.

But no matter what, if you buy the motor keep the fuel supply clean and well filtered. Don't let old fuel sit unused in the carburetors or trouble will be brewing.