How do I bleed the precision Injection on my Yamaha?

S

snapperman

Seaman Apprentice
Joined
Aug 9, 2002
Messages
35
I have one of these fab Yamaha 90hp. It's been out of service for a while, I've just got it going on premix and have found the precision injection is not working. I suspect it has air in it as it has been lying on its side for over three months. I was advised it had a bleed screw but where? :confused: <br /><br />cheers <br />Snapperman
 
clanton

clanton

Rear Admiral
Joined
Jul 9, 2001
Messages
4,876
Re: How do I bleed the precision Injection on my Yamaha?

If you are speaking of the oil injection, the bleed screw is on the oil pump, small philpps screw.
 
J

John from Madison CT

Petty Officer 2nd Class
Joined
Oct 14, 2001
Messages
176
Re: How do I bleed the precision Injection on my Yamaha?

The Bleed screw is located on the oil injection pump itself.<br /><br />It is a small phillips headed screw with a tiny gasket.<br /><br />You should see it no problem.<br /><br />Just to be sure though, I always run at least a couple of tanks of premix thru the engine and then look to see if the oil reservoir tank has a noticable change in volume.<br /><br />Good Luck,<br /><br />john
 
J

John from Madison CT

Petty Officer 2nd Class
Joined
Oct 14, 2001
Messages
176
Re: How do I bleed the precision Injection on my Yamaha?

Clanton: Geez, what are the odds ? We posted an answer in the same minute.<br /><br />Time to buy a lottery ticket.<br /><br />John
 
S

snapperman

Seaman Apprentice
Joined
Aug 9, 2002
Messages
35
Re: How do I bleed the precision Injection on my Yamaha?

Thanks all,<br /> on my motor it appears to be a small screwdriver head not phillips and it's made of brass will try it later<br /><br />Many thanks<br /><br />Snapperman
 
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