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boothead359 Added a reply to New Yamaha yz 125 gas/oil mixture for break-in

3/12/2021 7:40pm

Yep. You guys are right. I guess every Yamaha dealership in the country and Yamaha themselves, despite the millions of dollars in r and d money , and the hundreds of thousands of motors that Yamaha has produced , well they really just don’t know what they’re talking about. That experience can’t begin to compare to the wealth of knowledge...

boothead359 Added a reply to New Yamaha yz 125 gas/oil mixture for break-in

3/8/2021 9:48pm

Yes that is correct. All new bikes require a break in, tho the procedure varies from one manufacturer to another. The extra rich 15-1 ratio is just for the first hour. Yamaha ya says 20 min at 1/2 throttle max then 40 min at 3/4 throttle max. After that I would be comfortable running 32:1, that is so close to...

Mm471 Liked a reply to forum topic Let's see your white Yamahas

3/6/2021 2:10pm

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This forum topic has 138 replies.

boothead359 Added a reply to Engine Overrev run hot after Carb Rebuilt KTM 300

1/26/2021 4:55pm

I’ve experienced this with a 90 hp evinrude 2 stroke outboard. Runaway motor , revving high with the ignition shut off and the key in my hand. Had to disconnect the fuel line to shut it down. My first and only experience with a motor running with no spark for combustion , I guess the cylinder was hot enough to...

boothead359 Started a new thread Overall

10/10/2020 7:04pm

Wouldn’t Adam get 2 nd overall over Eli. Adam went 2-3(total 5) and Eli went 1-4(total 5). Adam had a better Moto 2 finish

This forum thread has 10 replies.

boothead359 Added a reply to Kx100 too lean

6/28/2020 2:47pm

Thanks fo the reply. Float level is about the only thing I didn’t check. Motor tests well for leak down I’ve disassembled the carb again in hopes of finding a possible crack or something but I’m pretty confident the it’s an issue outside the motor

boothead359 Started a new thread Kx100 too lean

6/21/2020 6:38pm

I have a stock 2016 kx100. It’s getting too much air from somewhere. The farther I turn the air screw in the better it revs off idle. Went up , way up , on the pilot jet with the same results. Rebuilt the motor, new crank seals , bearings, cylinder and piston (stock size) checked ring end gap motor ran...

This forum thread has 5 replies.