Posted by SouthernFarmall on May 23, 2011 at 17:18:56 from (76.4.24.140):
In Reply to: more cub problems! posted by farmallboy15 on May 23, 2011 at 16:27:23:
First, tap your float bowl on the carburetor a couple times with a screwdriver handle. If this fixed the problem, then you had a stuck float/needle. If that does nothing, then take your carburetor off the manifold by disconnecting the air cleaner, gas line, choke rod, and governor connecting rod. Take the 4 screws holding the top and bottom of the carb together off. Go to NAPA and get a rebuild kit for your carb (probably 30 bucks) and slap 2 new gaskets, a needle, and a seat in the carb. The rest of the parts probably aren't needed. While you have your carburetor off, soak it in carb cleaner over night. The next day, take your main jet (the little bolt-looking thing on the non-engine side of the carb) off. Blow it out with compressed air, and reinstall. Put your whole carb back together and put it on the tractor. This should be a fairly painless process, but there are a few trouble spots:
1. Stripped threads in the carb at the manifold - Be careful here, but some stripped thread repair should fix this.
2. Leaking at the gas line connection - If you have a metal line will this really be a problem. A likely culprit will be stripped threads in the carb. Be careful using thread repair here, because you can actually glue your line to the carburetor. You can also buy some gasoline-grade teflon tape to put on the threads to seal the connection.
3. Runs good until under load - Float tang is bent so that there is not enough gas coming through the valve (just bend the tang to fix this).
4. There is gas flow until the bottom half of the carb is reinstalled - Float tang is bent down, so that when the bottom of the carb is installed, the float pushes up on the needle and shuts the fuel off (again, bend the tang the appropriate way to fix this problem).
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