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Post by underhook on Mar 10, 2011 0:24:20 GMT -5
I have a 49.5cc Schwinn. For the most part it is/was a good running scooter. One day the belt broke. I replaced the belt now the scooter wont even start. I think the dealer gave me the wrong size belt. I put the belt on and it is EXTREMELY tight. How loose do these belts need to be? I have checked everything else that i can think of. Fuel lines, Battery, i adjusted the valves, checked the spark plug, It just cranks but wont turn over. Thanks in advance for any help.
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Post by kixome on Mar 10, 2011 1:01:36 GMT -5
If you put the belt on correctly it definitely should not be extremely tight.
Actually if you sqeeze the clutch together pusshing the belt toward the center and thread the belt over the variator (assuming of course that your ride has these parts) Then until you start it you should have some slack.
The best way to check if it is the belt causing this is to take it off and start it.
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Post by sirtokesalot on Mar 10, 2011 7:24:09 GMT -5
remember if u take the belt off and start it your going to need to take the variator apart because the weights will slide out and get stuck there because the belt wont be pushing back at it.
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Post by Beachy on Mar 10, 2011 7:27:48 GMT -5
Air, fuel or fire, you're not getting one of them.
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Post by edfr on Mar 10, 2011 13:57:49 GMT -5
Ok, let go back to when the belt broke. Did it rev really high when it happend or what. Give us the detail of what happened especially the sound of the engine when the belt broke and were you at Wide Open Throttle when this happened.
Lefty
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Post by felliott on Mar 10, 2011 16:11:55 GMT -5
When you removed the belt cover did you have a ground wire that you forgot to put back on?? Some scooters have a ground wire bolted to one of the cover bolts.
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Post by cyberbeer65 on Mar 11, 2011 6:02:23 GMT -5
Air, fuel or fire, you're not getting one of them. Don't forget compression... |
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Post by underhook on Mar 11, 2011 12:33:25 GMT -5
wow thanks for all the responses. There is compression. I checked it with the plug out. There is no ground wire on this scooter. Yes i believe i was at wide open throttle when the belt broke. I was going up hill so yeah wide open throttle and yes the engine revved very high when the belt broke. I gave the throttle a few more twist afterwards so i believe the scoot stayed running. There is definitely NO slack in this belt. I had to take the clutch off. I fully compressed the clutch and put the belt is close to the center as possible with the plate and the front part of the clutch as far apart as possible. I then had to thread it over the variator. I had to leverage the clutch assembly back on because there was not enough slack to slide it back on.
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Post by underhook on Mar 11, 2011 12:41:29 GMT -5
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Post by edfr on Mar 11, 2011 13:07:25 GMT -5
First off that belt is to small, What size does the belt have printed on it. I noticed in your picture sitting there the Belt is ALREADY a little down in the CLutch Pulley.
Also you mention that you tool the Clutch off to put the Belt on. Most of us Take the Variator OFF and at the same time Check the Weights and Clean out the Variator. Then put the Variator and BOSS back on the Shaft Holding the Back Plate so the Weights do not come out or out of position then Put the Belt on the Boss put the Front Variator Pulley on Screw on the Nut just enough to hold it in place. Then Push the Belt a little Down on the Clutch Pulley, Move the Belt up a little higher on the Variator and then Tighten the Nut so that it Tightens all the way up against the Boss.
So I would Take the Variator Off and Check the Weights maybe one came out and is binding the Variator from turning.
Lefty
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Post by underhook on Mar 11, 2011 14:22:07 GMT -5
The belt number is 669 18 30. The process that i described above for putting the belt back on is the edited version. At one point I did take the variator off. I tried every way i could think of to get that belt on. The only way i found that gave me enough slack to put it back on was the way i did it above. The full length version actually involved a couple hours, a few beers, cussing, and various techniques i thought would get the belt on. I guess my biggest mistake was assuming that the dealer knew what they were talking about. oh and the weights were being a pain if i am remembering correctly but i ended up getting them back to where they needed to be.
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Post by edfr on Mar 11, 2011 15:57:10 GMT -5
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Post by dr1445 on Mar 11, 2011 18:35:59 GMT -5
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Post by tvnacman on Mar 11, 2011 19:10:08 GMT -5
come on guys the belt broke !!!!!!!!!
he was going up hill !!!!!!!
HE REVED IT AFTER THE BELT BROKE!!!!!
the rollers are out of place pushing the variator closed !!!!!
Under stop remove the variator and belt it should start , check your kill switch and center stand switch .
check the clutch pully and the variator pully for shredded belt reinstall your rollers put your new belt on the clutch pully install the variator back in and you should be good to go .
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Post by tvnacman on Mar 11, 2011 19:22:28 GMT -5
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Post by edfr on Mar 11, 2011 19:56:47 GMT -5
Tvnacman, I asked that question about the rollers in the Variator or maybe some came out and or binding the Variator. He said he took the variator and fixed them and put them in the right place. So I don't know you have to go by what he is saying. What he should do is take the Variator off and Belt and try starting it, see if it will turn over. Simple and that would eliminate the CVT or point to the CVT. Lefty But they say YOU CAN LEAD A HORSE TO WATER BUT YOU CANNOT MAKE HIM DRINK  |
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Post by tvnacman on Mar 11, 2011 20:10:10 GMT -5
I
got cotton mouth
I bet the rollers moved again
what is the engine number and what size are the wheels ?
lefty I wonder if I will get feedback from the above link
John
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Post by edfr on Mar 11, 2011 21:07:53 GMT -5
Tvnacman, No you should not get any feedback, I brought that up on another thread and the two Mods Medman1952 and 90Gvert said it was Cool and not a problem. So if some info is on another website you can help the one looking for information by pointing him to where he can find the information and or solution. And what caused the COTTON MOUTH  Lefty |
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Post by underhook on Mar 12, 2011 18:20:57 GMT -5
I will remove the belt and the variator as instructed to see if the scooter will start. You can lead a horse to water but you cant make him drink...but if the horse is thirsty enough he will drink. Trust me with $4 gas on the way and a vehicle that gets 12 miles to the gallon...this horse is thirsty. dr that is one hell of a belt change.
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Post by edfr on Mar 12, 2011 22:13:09 GMT -5
Underhook,
Good Come Back I like that. I didn't mean to be smart but a lot of times people do not take advice well and get taken back a little.
No Offense Bro, we are just trying to help you get that sucker up and running so you can ride.
Great that will tell you a lot. Whether it is in the engine or something stuck in your CVT area.
It could also be your Clutch it maybe grabbing the Bell with pieces that came off when the belt shredded. So if you find that it will turn over with the Variator and belt off then Take the Clutch off and see if the springs are in place and the Three Pads are Retracted and not holding onto the Bell and or pieces of belt are in the bell itself melted onto the inside of the bell or even the pads.
Lefty
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Post by underhook on Mar 19, 2011 0:47:15 GMT -5
Cant wait to ride again unfortunately i dont have an impact wrench so i have to wait until i can get in touch with a friend to borrow his. I will post back with good news...hopefully, or at least some news anyway. Thanks for your help.
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Post by tvnacman on Mar 19, 2011 6:36:13 GMT -5
under , some may disagree with me , clean your rollers and the back side of your variator , put a light film of grease on the shaft (put on plastic gloves rub the grease at your finger tips then on the shaft) think of putting hand cream on your hands , then grease the the boss including the ends. start to assemble be sure not to get any grease on the face of either pully or variator .
you should be ok after
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Post by underhook on Jun 2, 2011 21:49:32 GMT -5
I would like to thank everyone here one more time. I finally got my hands on an impact wrench today. I have been hoping to buy one but still haven't had the money. I reread the thread a few times considering everything you guys said. Then i watched this short video www.youtube.com/watch?v=3yRskb0BYwE and that made it hit home. something was holding the variator shut. I can't say for sure it was the weights because they fell out as soon as i began to take it off, but i would guess chances were pretty good. I got the belt fixed and after some coaxing the scoot started up. It had very little gas in it that may have been as much as 6 months old. So it seemed sluggish. After putting as much 93 in it as would fit the scooter pepped up considerably while just being sluggish every once in awhile. Is this what normally happens with old gas? |
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