[thudpucker]

My Grandson's Go-Kart is about to end it's days in a large Bonfire.
The Carb is model gefluggenverndoggen!

I've had the Tecumseh carb off several times. I put a new float and a Kit into the carb. I was careful to get the Needle seat up and locked in place.
Eventually I found that Hidden screw you have to take out, clean the inside, then replace the seal over the screw head.

New fuel line and filter. Finally....I got it to start and run.
However when I try to let it Idle, it slowly loses RPM's and dies.
No spitting or backfiring.

I cannot find an Air/Fuel mix adjustment on this thing!
Surely it must have one.
Here's the carb. The little black spot is that hidden screw.

 

[RED-85-Z51]

Pull the bowl nut back off, look towards the top of it for a tiny little hole that goes down to the inside of the nut at about a 45* angle, this is your fixed idle jet feed hole, use a small strand of wire, such as on a wire brush, or welding tip cleaner, to clean it out.

You may think at first there is no such hole, but it is there, usually right at the lip of the threads.

 

[thudpucker]

OK Red, thanks for the tip.
One more time....about six or seven times now.
I may yet invent my Idea of an Electronic Needle valve to replace all these Carbs.
Dick

 

[thudpucker]

Boy whatta job. I don't see how anybody can make money working on Tecumseh Carb's.

I had this little carb off six times or more. I finally took all the hints to heart. Took the Carb off, got a selection of Stainless Wires and poked around in all those TINY little passages.
Some I just couldn't see with my old eyes. I just had to believe and poke around with that stainless wire.:banghead3

I never actually found a passage blocked. Although some I couldn't blow air through till after Poking around with that Stainless wire.
It was a mystery.
I'm still not sure it's fixed because of all the other problems with this Go-Kart.

 

[themidniteryder]

Check your throttle shaft for side play. what I have found with go carts, especially Tecumseh powered ones, is worn carb bodies at the shaft. My theory: since they are not ran at a constant speed, (on and off the gas pedal almost constantly) the throttle shaft is constantly turning with a side load and eventually egg's out the shaft bore through the carb. Solution: New carb. Or talk Red into building you one of those go fast Honda's :trink39: Also, I attribute my Tecumseh success rate to always, ALWAYS, every single time type always, replace the emulsion tube and o-rings if it is the plastic type. Same goes for the primer bulb.

 

[thudpucker]

These Tecumseh Carbs are so BAD!
I wonder why an electronic Needle pulse Carb has not been invented to replace them?
Or an Adapter to use the the B&S carb?
I cannot think of any American Mfg Failure to equal the Tecumseh Carb.