I forgot something

When I was reassembling my 91 yz 125 top end, I forgot to put grease on the o-ring. Is this gonna be an issue?

nope it will be fine :thumbsup:

you can always take the cylinder head off and grease it. would only take a few minutes.

If I take it off, do I automatically need to replace the O ring?

naw u dont.. unless u never replaced it.. it might be a good idea. but otherwise u dont have to worry

if the o rings are new they should be fine to remove and grease then install a

2nd time.

I never greased my orings and they worked 100%

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