EVO Derby Cover O-ring

[98fxstc]

OK whats the trick. I spent 40 minutes before I finally gave up.
I lubed my bike and was putting a new inspection cover gasket
as well as a new O-ring for the derby cover per the service manual.
The O-ring seems too big it absolutley will not stay in place. Is there
a trick to it? I finally just put the original O-ring back. Maybe I was given
the wrong one by the dealer? Is the EVO and Twin Cam different sizes???

[95 FXST]

Use alot of appoxy. Helps it stay in place and creates an additional seal.

[PatriotARK]

Those things are worse than tryin to stuff a wet noodle up a wildcat's ass.....I finally spent the bucks and got one of the new style. Worked like a charm! Fiber type gasket with molded in o ring. Try it and you'l love it!

[98fxstc]

I would have tried a new gasket.. But the parts counter guy said that it isnt
for my 1998 EVO engine. Just twin-cams... So I am stuck with the wet noodles

[HDMD88]

Originally Posted by 98fxstc

I would have tried a new gasket.. But the parts counter guy said that it isnt
for my 1998 EVO engine. Just twin-cams... So I am stuck with the wet noodles

No they have the three hole and the five hole gaskets.....!

[98fxstc]

hdmd88.. That figures.. He didnt seem to be the sharpest knife in the drawer... I even mentioned the gasket and he said it was 5 hole only.. I'm taking this O-ring back in the morning.....

[sailordb]

I have stuffed the wet noddle up the wildcat's ass. I put chassis grease on the o-ring and stick it in the groove and put the cover on by holding the bottom in place and then flatting it out. I tried that gasket. Leaked like a shive.

[steveusmc]

You can use petroleum jelly (vaseline) to hold the o'ring in place also. Should work for ya and won't hurt anything. When in doubt..grease it!!

Semper Fi,
Steve...Pensacola

[Ed Y]

Put it in the freezer for 15-20 minutes. Be careful about putting grease or too much of anything on the O-ring to hold it in place. This is the major cause of causing the derby cover to warp as you're tightening it if you've got a lot on there.

The plain O-ring was used on Evo's. The newer style, more like a quad seal, with small nubs on it was made for both Evo's and TC's. The one for Evo's was marked with a white dot on it. One for TC's did NOT have a white dot on it.

[98fxstc]

I got the updated gasket and installed it without a hitch. No fuss no muss...

[V Gray]

I put the bike in the freezer.

[Robert Edwards]

I used the new one with nubs on it and it leaked like a kitchen strainer. Went back to the old one on my 98 EVO and find that if I clean the area with rubbing alcohol and then use a lube that I got for my swimming pool O-rings to stop them from leaking, all is good. Magic Lube comes in a small tube and is a teflon based lubricant made by Aladdin. Waterproof,non-melting, chemical & heat resistant. Just sticky enough to get the thing to stay in the groove and it works great!! See your swimming pool supplier.