I have a brand new 2008 Greyhound 6.5hp engine I just put on a go-kart for my grandkids. I took off the govenor linkage, then changed my mind, afraid the grandkids might launch into a tree. I put the linkage back on, triple checked the linkage, adjusted the govenor. Here is the problem, with the engine off the carb butterfly will not automatically return to idle position. When started it's full throttle. I'm not sure about the govenor shaft coming out of the engine, it moves freely when not running, moves about a 1/4 turn, should it have some drag? I'm not understanding why the butterfly won't close, I can push it shut with my finger. when I move the throttle the butterfly does not change position.
Old man needs governor help cone 212cc
- Thread starter Kablooie
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Hellion
Murderator
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Believe it or not, with the engine at rest, the carburetor butterfly is wide open. When the engine starts, the flyweights in the governor swing out immediately (or even when you’re pulling the recoil), the center button goes up and presses against the paddle arm and it slams the butterfly closed (via the linkages), to idle *or wherever the throttle is set.
Supposed to be that way. Guess it’s one of those quirks.
—> However, it is not supposed to stay at full throttle. Something is wrong. Please post some photos so our team of experts can diagnose your engine. Some here can do it blindfolded.
Congrats on owning an old Greyhound.
to DIYGK.
The governor is not a rev limiter, it is a rev maintainer for when the engine bogs down and such. Governors can be tweaked and adjusted for higher maximum RPM, it’s just that most engines are factory set to keep +/-3600 revs
Supposed to be that way. Guess it’s one of those quirks.
—> However, it is not supposed to stay at full throttle. Something is wrong. Please post some photos so our team of experts can diagnose your engine. Some here can do it blindfolded.
Congrats on owning an old Greyhound.
to DIYGK.The governor is not a rev limiter, it is a rev maintainer for when the engine bogs down and such. Governors can be tweaked and adjusted for higher maximum RPM, it’s just that most engines are factory set to keep +/-3600 revs
Last edited:
Master Hack
Well-known member
You could rig a throttle limiter quick and easy. Next week you'll be removing that when the kids get bored going slow. You'llbe amazed how quick they learn. Make sure all the saftey equip is in good condition, seat belt, helmet, gloves, nomex fire suit etc.
ya might not need the last one...
ya might not need the last one...
Whitetrashrocker
Inmate #952016
This is a predater 212 stock linkage set up for the governor.
Minus the spring on the far right.
Minus the spring on the far right.
Wow, thanks a lot. Clearly stuff I did not know, and thanks for the pic. I'll give another run at it tomorrow. The setup in the pic is how I had it hooked up, so I must have another problem, as suggested. If I can't make it work I'll post some pics. FYI, videos that I watched online show the butterfly closing, go figure? I'm sure you are right regarding the learning curve.
panchothedog
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Welcome! So how old are the Grandkids? For the last 6 or 7 years, I've done nothing but remove governors and add speed parts trying to make them go faster. Now 4 of the 5 Grandkids have moved onto full sized cars. What Hack says in post #3 is truer then you could ever imagine. Because they are having a blast, they adapt faster than you can keep up with. Shouldn't be hard to fabricate something to limit throttle pedal travel.