Freshman Rider
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Joined: Dec 19, 2013 1:23:04 GMT -5
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Post by dragono on Jan 20, 2014 2:52:12 GMT -5
Ok heres the scoop. Scooter has 4500miles. Purchased it from a guy who semi wrecked it. On center stand it runs just fine and revs up high like any other scooter. However, when I go to ride it, the darn thing only goes about 20mph. I had rollers lying around from a junk scooter I had gotten, so I threw them on there (they were heavier) and that dropped my MPH down to about 10-15 MAX. I'm guessing that either I should sand the clutch pads (or inside of clutch bell) or purchase a new clutch. Also I should note that the belt looks fine, no real wear or thinning that could cause this issue. I've been reading the forums and my belt may be slipping also. Just need some guidance/hand holding I guess.
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Post by jjoshua20213 on Jan 20, 2014 3:08:47 GMT -5
First, I would adjust the valves. If that doesn't fix it adjust the carb. Then proceed to see if its a trans problem.
If your belt were slipping you would see noticeable ware.
Ride it for about 10 mins and check the spark color.
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Freshman Rider
Currently Offline
Posts: 71
Likes: 0
Joined: Dec 19, 2013 1:23:04 GMT -5
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Post by dragono on Jan 20, 2014 15:45:24 GMT -5
Valves were almost spot on! I was really surprised as I atleast expected them to be a little tight but they were perfect. I have been playing with the carb and I've gotten it up to 29mph gps. So I'll consider that a win in my book.
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Post by jjoshua20213 on Jan 20, 2014 16:32:49 GMT -5
Its not a win untill you can break the speed limit. lol
If you played with the carb and it went faster then that was your problem
I fixed this one guy's scooter and it was acting the same way you described, without the improvements and I put my a spare carb on and it was an instant improvement.
Good engine(Compression)+Good air/gas mix+electricity= Combustion
Disturb the balance of any of these and you have a shitty running engine.
Only problem is carb problem and electric problem often mimic each other. Or at least thats what experience has showed me. Put it on the stand let it warm up and throw it in full throttle and listen closely at the way it revs. It should sound clean all the way, not bogging, sputtering. I mean closed throttle to open. It should take about 3 secs literally to get to max rpm. Also you could have vaccum leaks (Extra air sneaking its way to the intake).
You should post a video if you can.
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