I'm going to try to explain this as best as I can...
I've got a 10Hp Tecumseh Engine Off-road Gokart with Torque Converter ... This thing is fun to mess with and I'm having a slight issue with its starting up and stopping. I just put a new belt on it which drives the rear wheel chain sprocket for the back wheels.
It has no gears just gas and break... which both work just fine. Problem i'm having is when I turn the key (electric starter) it will start up but at the same time the damn thing starts moving as its turning over. If I hold down the break to stop it after its started then it shuts off. So I'm sitting here with this WTF moment having no idea what the hell is causing it.
It looks like this but of course I got mine in camo
So I would love to hear of a suggestion to fix this.. its gotta be something simple cause it just did it over night pretty much when I was riding it a while back and everything else works so its like something came out of adjustment.
I'm wonderin if the belt is required to go on a certain way with this model or do the pulleys have to be a certain distance away from each other since I've had to pull the engine in to move them closer to put the new belt on then push it away and lock the bolts back down.
but anyway.. I'm going to try turning the belt around tomorrow and adjusting the distance the pulley's are from each other and see what that does... I figure it something simple or at least I hope so.
I doubt it has anything what so ever to do with the clutch, unless it’s frozen up somehow. Sounds more like trash in the carburetor to me or idle adjustment. The carb is idling higher to compensate for an air or gas orifice being stopped up.
Sliding down the banister of life ..........................
...which I gather from his description of the cart moving as soon as the starter turns over. How do you explain that with a clogged air/gas inlet?
For all that I know, the starter engine turning the engine over should not be enough to engage a torque converter.
Then again, my knowledge comes from cars weighing >1.5 metric tons and accordingly powerful engines and transmissions, not go-karts. Bikes fit the weight range more closely, I guess.
SeedOfChaos wrote:...which I gather from his description of the cart moving as soon as the starter turns over. How do you explain that with a clogged air/gas inlet?...
Because when a carb stops up the idle will raise up some to keep the engine running. Usually those type engines have an old style mechanical governor. When the motor tries to die it will raise the idle, the idle raises and the clutch engages.
I can’t see the go cart on the link provided. I’m really curious now what the problem is.
Sliding down the banister of life ..........................
I took the guard off it just now and watched it as I revved it up with the rear end jacked off the ground..its the only way I can do that without it taking off with me in it...its working just as it shows in that video above.
so this brings me back to the original problem with still no solution. I've gone on both those parts and sanded off any rust I found too and lubed everything up good and seems to be working just like in that video one opens the other closes and the belt moves vs versa on both as it should. when its Idle the wheels are still moving yet if I crank down the idle anymore it won't idle it will just shut off.
If that clutch is opening and closing then its working fine. That’s how you change gears, like on a 10-speed bike, the chain moves up and down for gear changes. I think you’re barking up the wrong tree thinking it’s the clutch.
I still think its in the carburetor or governor. Is there a little arm and spring type mechanism that runs from the engine to the carb? If so, check that to see if it is moving back and forth easily.
Sliding down the banister of life ..........................
RoundEye wrote:If that clutch is opening and closing then its working fine. That’s how you change gears, like on a 10-speed bike, the chain moves up and down for gear changes. I think you’re barking up the wrong tree thinking it’s the clutch.
I still think its in the carburetor or governor. Is there a little arm and spring type mechanism that runs from the engine to the carb? If so, check that to see if it is moving back and forth easily.
well the engine runs fine... strange cause when its idle it shouldn't be engaging that primary pulley cause when its turning its causing it to pull the belt thus moving the secondary and then moving the chain to put the cart in motion.
Mark wrote:lower the idle speed and see what happens
it won't stay running with a lower idle speed..tried it already.
No matter.. it ran fine last night cept for that problem I just delt with it..but after I had it go airborn a few feet I now have to fix the right front wheel that it would appear the bearings are shot and its angled out about 30degree's
Look at it this way, you need fuel, fire and compression to make an engine run. You obviously have fire and compression because the engine will run at higher speeds.
That leaves the carb or something related to governing the speed. I’m still of the mindset there is trash in the carb stopping up the idle circuit. That is the most common problem with the symptoms you are describing. It could be something simple as a dirty air filter too.
I’ve been known to be wrong before though.
Sliding down the banister of life ..........................
RoundEye wrote:Look at it this way, you need fuel, fire and compression to make an engine run. You obviously have fire and compression because the engine will run at higher speeds.
That leaves the carb or something related to governing the speed. I’m still of the mindset there is trash in the carb stopping up the idle circuit. That is the most common problem with the symptoms you are describing. It could be something simple as a dirty air filter too.
I’ve been known to be wrong before though.
If this is the case, buy a bottle of carb cleaner preferably with a small tube to attach to the aerosol head for tight areas and blasting out air/fuel passages. See if it'll help.
Tecumsehs are notorious for idling problems. If you can, post a pic of the carb you have and I'll try to supply you with a fuel flow diagram. Tecumseh=Antichrist
Depending on the carb used, the idea above should work. Some of the other models, you'll have to remove the welch plug in the side to blast it.
Success is a lousy teacher. It seduces people into thinking they can't lose. -Bill Gates
I'm taking it to someone to have it worked on... I've spent too much time on it to waste any more. Since I have that problem and yet another with the wheel this is prob the best idea.
I know I went through hell with mine. I knew it was the carb, but no matter what I did, it was still funky. I bought a brand new carb, installed it and still had problems. I took the idle mixture screw out and found a piece of plastic wrapped around the threads and keeping the needle point from sealing properly. Once I removed that, all was fine.
Success is a lousy teacher. It seduces people into thinking they can't lose. -Bill Gates
