Yamaha 250 OX66 Help

[vitalii69]

I new with outboard Yamaha 250 OX66 ( 2001 , 180 hours) when I start, engine smoke too much , and one has a few vibration , What problem can be?

Thanks for taking the time to read this.

 

[cousinabe]

Re: Yamaha 250 OX66 Help

Service your O2 sensor every 100 hours.
www.boatsetup.com/O2sensor.pdf

Also, you can make sure your oil rod linkage is correctly adjusted.

For the oil linkage rod adjustment, disconnect the butterfly linkage on the starboard side of the motor, just the bottom set. This will allow the oil linkage rod on the port side to seat freely. Use a feeler gauge on the oil pump, I have read .020 and .005. I used .005. on the oil pump, measure between the oil lever and stop. You may have to cut 5 threads off of the linkage rod to screw the plastic collar down enough.
There is also an o-ring behind the oil pump that can leak, but do the O2 sensor and linkage adjustment first.

 

[vitalii69]

Re: Yamaha 250 OX66 Help

Thanks , can I use West Marine Premium 2-cycle Tc-w3 Oil f or this engine?

 

[ARCHSEA BUNKER]

Re: Yamaha 250 OX66 Help

yamaha lube yamaha lube yamaha lube

 

[vitalii69]

Re: Yamaha 250 OX66 Help

Thank you, you think Yamaha Lube other quality? It is advise from experience

 

[vitalii69]

Re: Yamaha 250 OX66 Help

Yamaha not oil company, I think all oil identical if you want you can make "ARCHSEA BUNKER OIL YAM" (best quality... special...)

 

[rodbolt]

Re: Yamaha 250 OX66 Help

on the OX 66 motor and the 2.6L HPDI motors they use an O2 sensor.
thats why I reccomend only using Yamalube on that engine.
I dont know what the other brands additive package will do to the O2 sensor.
other than that all bets are off.