Clutch constantly engaged!

[Retsihw]

the springs are not the issue. it's the crankshaft. I think it's bent because no matter how much i turn it over, as soon as resistance is applied to the live wheel, brakes, rider weight, etc... The engine dies immediately. took off the clutch cover and inspected it, the clutch is perfectly aligned and set up. I did notice that the crankshaft was off-center in the bushing, pressing the bushing to make the clutch useless and not freewheel when at idle, nor accelerate without a choppy start.

I am wondering if there is a quick fix or if i need to disassemble the motor entirely to force the crankshaft back into shape.
my other alternative is to get a replacement motor...

runs great when the wheel is raised off the ground lol.

 

[Sidewinder Jerry]

Pictures would be a great benefit here to help diagnose the problem. Chances are if the shaft has actually been bent, there's major internal damage inside of the engine. Meaning the engine wouldn't run at all.

 

[DAMIEN1307]

Pictures would be a great benefit here to help diagnose the problem. Chances are if the shaft has actually been bent, there's major internal damage inside of the engine. Meaning the engine wouldn't run at all.

He has had other posts previous to this one @Sidewinder Jerry ...Here are the links to the pics he has posted as well as one Twitter video that might be of help...Four strokers are your thing, not mine...lol.

Hello! Modifying mount for a cheap cruiser bike! Should i?

I have a Kent Seachange with a 4-stroke motor kit, cheap chinese belt drive. I see some people have issue mounting the motor to the frame and say they need to make a custom mount for the engine so it can sit just right without much tilt forward or backward. Is it ok to mount the engine with...

motoredbikes.com

Hello! Modifying mount for a cheap cruiser bike! Should i?

gotcha. I'll need to get a protractor and a level to determine for sure, but the engine i think was about 20 degrees by the eye. I was also going to put the engine on a 21 year old Sun brand cruiser with a 3 speed shimano hub. I didn't do it because the rear hub was skipping gears and...

motoredbikes.com

Hello! Modifying mount for a cheap cruiser bike! Should i?

It's a slotted bolt on option, it has recesses in the slots for the bolt heads I'm more inclined to save my 60 bucks and just fix the one I have. The OP's engine screws into the engine from underneath, there's no exposed nuts or bolts on top.

motoredbikes.com

Hello! Modifying mount for a cheap cruiser bike! Should i?

OKAY! i think it's all assembled. sprocket and tensioner are in alignment and the chain is shortened to the max i am comfy with. has some flop, but no more than what i see other bikes having so i hope im good. it's SO hard to pedal because of the clutch not having a freewheel inside of it...

motoredbikes.com

it is done <twitter link>

https://twitter.com/retsihw/status/1623429308311310336?s=20 Got it running and rode around the block 3 times already. need to tune it a little and i flooded it on the 3rd run because i let the throttle open too much uphill lol. But runs great! need to get a quieter chain though.

motoredbikes.com

 

[DieselTech]

the springs are not the issue. it's the crankshaft. I think it's bent because no matter how much i turn it over, as soon as resistance is applied to the live wheel, brakes, rider weight, etc... The engine dies immediately. took off the clutch cover and inspected it, the clutch is perfectly aligned and set up. I did notice that the crankshaft was off-center in the bushing, pressing the bushing to make the clutch useless and not freewheel when at idle, nor accelerate without a choppy start.

I am wondering if there is a quick fix or if i need to disassemble the motor entirely to force the crankshaft back into shape.
my other alternative is to get a replacement motor...

runs great when the wheel is raised off the ground lol.

Can we get some pics, I think you you got a bushing issue in your clutch bell. I highly doubt crank is bent, but it can happen. Thanks.

 

[Retsihw]

Can we get some pics, I think you you got a bushing issue in your clutch bell. I highly doubt crank is bent, but it can happen. Thanks.

I'll get some pics after i'm done with some work today. i think you guys may be right about the bushing, i cannot get the bushing screw unstuck myself. need something more heavy duty.

 

[Retsihw]

 

[DieselTech]

Remove the spark plug & put some rope down the sparkplug hole. Make sure to keep a foot or so of rope out of the hole to hold on to. Then slowly rotate engine over until engine locks up, then remove your crankshaft bolt. You can thank @Chainlube for that trick!!!

 

[Retsihw]

Remove the spark plug & put some rope down the sparkplug hole. Make sure to keep a foot or so of rope out of the hole to hold on to. Then slowly rotate engine over until engine locks up, then remove your crankshaft bolt. You can thank @Chainlube for that trick!!!

got the bushing off. lubed it and now the clutch freewheels moderately well after oiling. BUT now the issue is the bike wont start. found gas in the oil case, drained it, lit it on fire to burn any fuel in there, then refilled on oil. still wont start. been playing with the carb for like 2hours now. gonna have to screw it lean all the way then back it out every couple pulls soon i think.

 

[Sidewinder Jerry]

Have you been using ethanol-mixed gas or are you using a 100% gas?

 

[Retsihw]

Have you been using ethanol-mixed gas or are you using a 100% gas?

10% ethanol mix. but using fuel treatment in it regularly. about 100ml per litre. was running fine with it up until today.