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Hi Friends,

I haven't been here for awhile as the weather is too cold to work on my scoot. But we had a couple warm days here in the ATL, so I rounded up my friends to conquer this problem. I’m overhauling a Roketa MC-54-250B with the Linhai engine. I'm currently working on the CVT assembly. I have good reason to believe the clutch needs to be replaced or at least degrease.

I was able to remove the front assembly pretty easily. The amount of grease on the rollers was phenomenal. My local scoot mechanic said he had never seen grease in ANY roller assembly EVER before. I have cleaned everything I can get to so far. Pictures of assembly
are at Photobucket address below. I NEED TO REMOVE THE CLUTCH ASSEMBLY OUTER NUT!

Problem: I have used every method I know, including: 3 guys - 1 holds the chain wrench around the bell, one pushes the 4ft breaker bar down to loosen the nut, and one guy holds the socket/extension straight so as not to strip the nut. No dice. Unbelievable!

We also tried the same method without a chain wrench. I took the scoot off the center stand, sat on the scoot, and held both brakes tight while my buds repeated the last process. This time it turned slowly, about 2/3 of a turn. But I'm FAIRLY? sure it wasn’t the desired nut turning. At least that was our perception. I have no Idea what else could be turning. But it can't be good, so we stopped after that.

5 Questions:

A) What could have been turning in the last scenario, if not the nut? Is it damaging?

B) How can I get this nut off without trashing it? It’s already a bit buggered-up.

C) Assuming I can’t do anything with it, Can I use a nut breaker on it, as the nut has a wide beveled edge as well as the normal 6-sided area? (See pics).

D) What is the part number, specs, and/or name of this exact nut?

E) Where can I get another nut?

Grateful as always,

Andy (technoglide)


s1035.photobucket.com/albums/a438/technoglide/Roketa%20MC-54-250B/CVT%20transmission/Clutch%20nut%20removal/

Well Damn! That's pretty sweet. I did the right thing by accident. I appreciate you showing me that online manual. I actually bought a manual on CD, which was slightly wrong in some respects. I suspect it was for older models, perhaps in other countries. The PDF titles were in Italian, but the content was a real Kymco Manual written in English.

I had oil and gear oil changed at my first service, ~700 mi. I'm at 3000 now. The crankcase oil was black as tar, down almost to the fill point. The gearbox was at 2/3 full. I guess I'll need to check every 1000 or so.

Hmm. Thanks to all for the wisdom. I've ordered some foam material to cut a new air filter. I've never seen red silicone. where do you get it/formal name? Should I scrape the old partly peeled and torn gasket off prior to reinstalling the CVT cover? I've seen aluminum parts where it's better to leave old gasket, rather than scratching the joining surfaces. I like the window screen idea for the CVT filter. There's alot of black rubbery buildup from worn belts on the inside of the CVT cover. Do I need to clean it? If so, what solvent should I use? Thanks again, -tglide