YS 63s
02-26-2008 | 03:36 PM
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From: Oslo, NORWAY
YS 63s
Troy,
I have a problem with the pushrod cover O-rings moving out of their seats. Have replaced the O-rings and made sure to fit them properly, but they still tend to get out of position causing the engine to draw air/lean. Perhaps possible glue a piece of alu tube on the pushrod covers to increase the surface area in contact with the O-ring, or is there another fix?
Brdgs
Guttorm
Oslo
I have a problem with the pushrod cover O-rings moving out of their seats. Have replaced the O-rings and made sure to fit them properly, but they still tend to get out of position causing the engine to draw air/lean. Perhaps possible glue a piece of alu tube on the pushrod covers to increase the surface area in contact with the O-ring, or is there another fix?
Brdgs
Guttorm
Oslo
02-27-2008 | 12:35 AM
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RE: YS 63s
You have to make sure they are not piched when you put it all together. If the o-ring is pinched they will pop out. Also is it possible that you don't have the head bolts torqued evenly.
I have not seena case where new o-rings and a clean dry case and pushrod tubes properly installed yeilded the result you are talking about.
Are you using Oil to install them? This could casue it maybe but I doubt it.
I would suspect you are not tightening the head evenly down onto the case. Sometimes the o-rings can be stuborn and pop out a little on the back side when installing then they quickly work their way completey out...plus they are usually damaged by this too.
Are your o-rings damaged? once they are cut or pinched they will never seat properly.
Troy Newman
Team YS
Troy Newman
Team YS
I have not seena case where new o-rings and a clean dry case and pushrod tubes properly installed yeilded the result you are talking about.
Are you using Oil to install them? This could casue it maybe but I doubt it.
I would suspect you are not tightening the head evenly down onto the case. Sometimes the o-rings can be stuborn and pop out a little on the back side when installing then they quickly work their way completey out...plus they are usually damaged by this too.
Are your o-rings damaged? once they are cut or pinched they will never seat properly.
Troy Newman
Team YS
Troy Newman
Team YS
02-27-2008 | 12:50 PM
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From: Oslo, NORWAY
RE: YS 63s
Thanks Troy,
No damage. This happend on a brand new engine (my second). If the problem persists I'll change the rings again and make sure everything is dry & clean &
evenly thightened and see what happens.
Brdgs
Guttorm
02-27-2008 | 04:42 PM
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From: , WA
RE: YS 63s
Hmm! I just took a look at my YS 63 and sure 'nuff one of the o-rings has pushed out of place in the head also. This is a brand new engine. I reported above that it ran at 4800 rpm with the throttle completely closed...indicating a big air leak somewhere I figured.
I pulled the throttle barrel out of the carb and found the barrel seal torn in to. However I may or may not have done that pulling the barrel out, no way to know.
New seal on it's way and I have reset the o-ring on the pushrod tube. I don't know if it can cause enough air leak to cause my problem or not??
If it did, I'm a little disappointed in having that kind of problem in a brand new engine and my first experience with a YS.
I pulled the throttle barrel out of the carb and found the barrel seal torn in to. However I may or may not have done that pulling the barrel out, no way to know.
New seal on it's way and I have reset the o-ring on the pushrod tube. I don't know if it can cause enough air leak to cause my problem or not??
If it did, I'm a little disappointed in having that kind of problem in a brand new engine and my first experience with a YS.
