no power in newly installed 4 stroke

jerry campo

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Sep 24, 2018
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sorry i double typed the message. it wasnt completely eaten. one of the shoes just wasnt engaging it seemed. can this be caused by something other than the clutch itself?
 
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Saddletramp1200

Custom MB Buiilder
May 7, 2008
1,451
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A long time ago a company was putting out kits that would not even run. eBay stopped it. They are incredible for the price. mine last about 2-3 years of everyday riding.
 

Saddletramp1200

Custom MB Buiilder
May 7, 2008
1,451
83
48
Houston, Texas
Keep the oil clean and at the proper level. I am rather hard on mine. I have been looking at the phantom bike Amazon has. They want way to much for it. I am digging the frame.
 

jerry campo

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Sep 24, 2018
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cool, thanks for the input. ill be sure to take the best care of it that i can. What kind of bike do you have now?
 

jerry campo

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Sep 24, 2018
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i installed the new clutch, but i seem to have a fuel delivery problem as well. the bike only goes when i have the choke on. and there is fuel leaking where the fuel valve meets the gas tank, it must be clogged somewhere. any suggestions?

EDIT: I just realized i cant go up hill like i can with the 2 stroke. I need to go up hill to get to work. I might just have to return it and buy a 2 stroke. it seems like the way the clutch works on each one is different. it feel like the 2 stroke uses an actual locking mechanism for the clutch where as the 4 stroke uses friction, and if the friction isnt great enough, it wont give enough power. Am I right?
 
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jerry campo

Member
Sep 24, 2018
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the seller wont let me return it so im stuck with it. does anyone know if should be able to go uphill with this 4 stroke? also how do i remove the carb where it connects to the air filter?
 

xXNightRiderXx

Active Member
Jan 12, 2017
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yeah, any motor that has had oil and gas run through it after factory testing cannot be returned.

You SHOULD be able to go uphill with it, albeit slowly. Have you reduced your gearing yet?

A clutch for a tapered shaft will slip on a keyed shaft. You HAVE to have that keyway.

There should be two tabs at the top of the airbox. Pull on those, and it should come right off. Then you'll have to navigate around the carb to look for the nuts that hold it onto the studs. You will want to run a carb brush through the jet, emulsion tube, and the fuel inlet, and make sure the float valve isn't stuck.

Two stroke clutches, although cable/spring actuated, still use friction material to transfer power. If that material is contaminated, it won't perform properly. However, a two stroke also has more clutch pads than a centrifugal clutch, and so can tolerate slightly more contamination than a centy. Did you make sure there was absolutely NO oil whatsoever around your clutch, including the bell? If not, use a nylon drill brush with a heavy duty degreaser and really REALLY clean that area. Once you're done with the degreaser, use a microfiber shop rag to pick up any dust left hangin around.
 
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