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Author Topic:   Fogging Four-cycle Outboard Engines
Terrry posted 07-04-2009 07:28 AM ET (US)   Profile for Terrry   Send Email to Terrry  
What do you use to fog a 2002 Yamaha F60 four-cycle engine at the end of the season? How is it done? Is there any special additives that I should add to my six gallon fuel tank during the season to maybe alleviate this cleaning problem? Thanks in advance to everyone for all the HELP you've been giving me.
jimh posted 07-04-2009 09:09 AM ET (US)     Profile for jimh  Send Email to jimh     
Generally the owner's manual of your outboard motor will provide a procedure for preparing the engine for a long layup. I would consult those recommendations as the primary source of advice. Yamaha makes all their manuals available on-line. If you don't have the manual you can read it on-line from the Yamaha website.

Since your fuel tank is small and probably a portable tank, I would just pour out any fuel remaining in the tank. Use the fuel in your vehicle or other gasoline engine. If you want to store the fuel, add fuel stabilizer.

Phil T posted 07-04-2009 11:08 AM ET (US)     Profile for Phil T  Send Email to Phil T     
The owners manual can be found here:

While it says, F50, the manual is the same for the F60.

http://www.yamaha-motor/assets/service/manuals/2002/LIT-18626-04-72_536. pdf

In the chapter on maintenance, (Section 4, page 5) there is a subsection on long term storage.

As for fuel, I recommend using Stabil or similar product that helps deter phase separation (due to the ethanol in E-10 fuel) with every tank.

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