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    Lost half the plugs!! Yam 115 BETO (1996)

    Guys, I've got a Yam 115 BETO V4(1996), been suffering intermittent power loss and whilst bringing the boat up the river the other day I lost power again, took out the plugs and saw that the both the port side were wet and oily, and the stbd side dry. Does the loss of just the port side plugs...
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    Carb Rebuild question

    I'm stripping and cleaning the carbs on my 115 (1996) BETO. I've done it a couple of times before and doing it as i think i may have a sticking needle valve. My question is this - the seloc manual shows that there should be a gasket under the cover to the Main Air Jet. The engine has been...
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    96 yam 115B - idle/cylinder question

    I'm scratching my head over this one.... Took boat out yesterday, started it up as normal and immediatly motored out at just above idle, sounded rough and after a couple of minutes it stalled, did this twice. I started it again and it sounded better, took off the cowling and pulled the ht lead...
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    1996 Yam 115 Thermo switch question

    Hi Guys, A quick summary of my engine snag and then the question.....Over the last summer my yamaha 115 (1996) has been running fine at 5200 rpm then intemittently dropping to about 3200. It doesnt come off the plane and nothing alarms, just loses about a 1/3 of the power. Sometimes it is for...
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    Bearing Buddies Size question

    Hi Guys, Bearing Buddies don't seem to be used much on this side of the Pond so i'm gonna pick your brains please, my boat trailer has 2 inch hubs and i've been looking at putting BB's...... The sizes seem to be 1.98 inches and 2.047 inches.....which one would you advise? I'm leaning towards...
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    Yamaha 115 missfire?

    Hi Guys, This is the first time i've posted, but i've been lurking for a while picking up some great tips. I'm going to have to pick some brains if you've got the time.....I've got a 1986 yamaha 115 engine on a 5.5m RIB. I can be running along at full throttle, on the plane and then i seem to...
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