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| Motorized Bicycle Trouble Shooting Use this area to post problems that may arise that you could use some help in figuring out what is wrong with their bicycle motor and what needs to be done to achieve top performance. |
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08-29-2009, 04:03 PM
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Motorized Bicycle Member
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Join Date: Aug 2009
Location: atlanta, ga
Posts: 24
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Super tight clutch problem!!!!Need Input
I just finished putting together my first MB, everything seems fine , the only problem I have is the pressure it takes to pull the clutch, I actually broke the clutch lever right off the handle bar and now need a new one, is it normal for them to be this tight, I have to put a wreck on the clutch lever to get it to move and when it does move it does disengage so it is working, the one on my dirtbike is nothing like this.
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08-29-2009, 05:04 PM
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Motorized Bicycle Elite Member
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Join Date: Jul 2009
Location: Farmington, MI
Posts: 136
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Re: Super tight clutch problem!!!!Need Input
Check out Norman's section. He has a post on adjusting the internal clutch spring. I would only do this after you deemed it necessary. Check the flower nut, clutch adjustment, clutch cable routing and lubrication of the clutch cable (inside the the sheathing) before you adjust the internal spring.
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08-31-2009, 10:32 AM
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Motorized Bicycle Member
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Join Date: May 2009
Location: ashland, oregon
Posts: 27
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Re: Super tight clutch problem!!!!Need Input
I've had two of these that had to have the clutch tightened up some at the internal spring. no surprise that you would see some tightened too much. not much of a procedure. make sure your cable isn't binding though, and that everything is nice and free to move.
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09-01-2009, 03:44 AM
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Motorized Bicycle Elite Member
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Join Date: Jun 2009
Location: Washington St.
Posts: 443
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Re: Super tight clutch problem!!!!Need Input
I'm a big guy, I can push my clutch lever in (the one on the motor) with my thumb but it takes just about all the push my thumb can muster. I'm just trying to give you a reference so you can decide if it's binding anywhere else before you adjust the internal spring.
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Put something FUN between your legs..
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09-01-2009, 10:52 AM
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Motorized Bicycle Member
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Join Date: Aug 2009
Location: atlanta, ga
Posts: 24
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Re: Super tight clutch problem!!!!Need Input
I checked everything and greased the cable and it was still the same, I then loosened the interal spring and now it is working great, Thanks for the help.
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09-19-2009, 12:23 AM
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Motorized Bicycle Newbie
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Join Date: Sep 2009
Location: Utah
Posts: 1
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Re: Super tight clutch problem!!!!Need Input
I am having the same problem but i cannot figure out how to adjust it as norman says because when you try to loosen it all i do is unscrew the flower nut, if anyone could plz help me with this problem it would be great
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09-19-2009, 01:07 AM
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Motorized Bicycle Elite Member
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Join Date: Aug 2009
Location: San Diego, Kaliforgnia
Posts: 3,171
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Re: Super tight clutch problem!!!!Need Input
The high tension clutch spring is inside the engine case between the clutch and chain sprocket. You gain access to the adjuster nut by removing the clutch cable stop that is threaded into the top engine case, underneath the carburetor. Put a medium sized flat blade screwdriver into the hole and turn the chain sprocket untill you feel the the screwdriver tip drop into a slot in the edge of the nut.
Hold the screwdriver securely in an effort to keep the internal nut from turning while you are turning the chain sprocket counter-clockwise with a pair of channel lock pliers. It may take 1/2 to 1 turn of the sprocket to get it good. You will have to experiment to get it just right.
Norman's tutorial shows all this clearly, only he tells folks to tun the sprocket nut clockwise to tighten the spring after the clutch has high miles on it.
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02-06-2011, 12:05 AM
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Motorized Bicycle Elite Member
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Join Date: Jan 2011
Location: LA
Posts: 116
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Re: Super tight clutch problem!!!!Need Input
Sorry for raising the dead. Can I use the spark plug wrench to turn the sprocket? Or does it have to be channel lock pliers.
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02-06-2011, 12:12 AM
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Motorized Bicycle Elite Member
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Join Date: Dec 2010
Location: somerville MA
Posts: 815
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Re: Super tight clutch problem!!!!Need Input
Quote:
Originally Posted by userix
Sorry for raising the dead. Can I use the spark plug wrench to turn the sprocket? Or does it have to be channel lock pliers.
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i started doing that originally but it wasn't very good and seemed to be stripping, so i used my ratchet with the appropriate head and used that instead, worked much better.
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02-06-2011, 12:15 AM
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Motorized Bicycle Elite Member
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Join Date: Nov 2009
Location: fergus falls mn.
Posts: 132
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Re: Super tight clutch problem!!!!Need Input
If you can get a wrench to fit the nut before using a pliers the better off you are. Just saying!
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