Wouldn’t be the first time a manual was wrong. Same thing on my dads optimax, book said one kind of plug and should be another one. Service tech figured it out from la Cannes in faribault
March 3, 2014 at 4:56 pm
#1393447
Yamaha F150 spark plugs?
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March 3, 2014 at 5:03 pm #1393451
Read the plugs that are in it now to see if you need a hotter or colder plug, that would be the best way.
March 3, 2014 at 5:14 pm #1393459Plugs look great i just like to change them every spring.
Just looked around more under the cover of the motor and there is a sticker saying to run the 5s gapped at .044
Weird how Yamahas website says different.
March 3, 2014 at 6:09 pm #1393470I just ran out to the garage to grab a spec book for Yamaha’s and in print in both books I checked call for the LFR5A-11 gapped at .039~.043″ and that is what I have always put in them. If it looks like the 5s you pulled out are burning fine stick with them. It’s always nice to hear about guys doing preventive maintenance before it causes a problem!
March 4, 2014 at 5:15 am #1393530
Quote:
Plugs look great i just like to change them every spring.
I used to that every spring too. When I bought a new F115 a couple of years ago the dealer’s tech/mechanic told me to run the factory installed plugs until I noticed any problem.
March 4, 2014 at 7:44 am #1393557Quote:
Quote:
Plugs look great i just like to change them every spring.
I used to that every spring too. When I bought a new F115 a couple of years ago the dealer’s tech/mechanic told me to run the factory installed plugs until I noticed any problem.
Im sure I could go several years but its just part of my routine and new to the F150 this year so was curious on the plug type. Plugs, water impeller, water impeller housing gasket, lower unit drain plug screw gaskets, and crankcase drain plug gasket are all an every year deal for me.
Over the top? Yes! But its a cheap piece of mind!
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