carb adjustment problems

[Matt G.]

'Looks clean' and 'clean' are two different things. Has the carb been soaked in a bucket of carb cleaner? There are lots of passages that need to be clear and they are not visible. The main jet needle is hollow and has 2 sets of holes in it. You should be able to put your mouth over the pointy end and lower set of holes and blow through it and out the upper set of holes by the threads. If not, something is clogged up.

Carbs don't 'wear out' other than where the throttle shaft goes, and that is easily repaired and isn't the problem here anyway.

[JaysNJcub127]

Originally Posted by Matt G.

'Looks clean' and 'clean' are two different things. Has the carb been soaked in a bucket of carb cleaner? There are lots of passages that need to be clear and they are not visible. The main jet needle is hollow and has 2 sets of holes in it. You should be able to put your mouth over the pointy end and lower set of holes and blow through it and out the upper set of holes by the threads. If not, something is clogged up.

Carbs don't 'wear out' other than where the throttle shaft goes, and that is easily repaired and isn't the problem here anyway.

yes its clean. It was rebuilt by someone who knows what they are doing and was soaked etc. then I took it apart and soaked it again and blew it all out with a compressor. The float is is good, no leaks, and I set it to the correct specs. The needles are clean and free. I am confused

[Rhoderman]

Hi Jason,
My 122 won't start unless I close the choke. But, once it fires, I'd better be opening the choke or it will flood. It will start reliably if I follow this procedure: Open throttle enough to see the throttle move just a little, choke it, roll the starter, and when it pops, release the choke. I may have to run on partial choke for a bit, but once she's warmed up there are no issues.
For yours, I'd start to wondering how good the coil/points/condenser are, and how nice the plug is. A new plug wire might also be helpful. I had a bad coil on my 122 when I first got it. The PO had installed a non-cub (not rated for 12V constant) coil. It would get hot and run like heck.
Is it possible someone "fixed up" your #26 carb? I've seen people do some real harm with a drill bit when they thought they were improving it.
Good Luck!
Jim

[JaysNJcub127]

Originally Posted by Rhoderman

Hi Jason,
My 122 won't start unless I close the choke. But, once it fires, I'd better be opening the choke or it will flood. It will start reliably if I follow this procedure: Open throttle enough to see the throttle move just a little, choke it, roll the starter, and when it pops, release the choke. I may have to run on partial choke for a bit, but once she's warmed up there are no issues.
For yours, I'd start to wondering how good the coil/points/condenser are, and how nice the plug is. A new plug wire might also be helpful. I had a bad coil on my 122 when I first got it. The PO had installed a non-cub (not rated for 12V constant) coil. It would get hot and run like heck.
Is it possible someone "fixed up" your #26 carb? I've seen people do some real harm with a drill bit when they thought they were improving it.
Good Luck!
Jim

brand new kohler coil, new condeser, new points, new head gasket, new plug, clean fuel system. No the carb is unmodified, got it from a reliable source. Runs great with the walbro i just redid.