I have an LT1000 with 17.5 B&S model 31C707-0230E1. I've been having problems with the engine. To keep it brief as of now, it starts up fine with choke and runs good with choke. At idle speed it continues to run fine. As I increase throttle speed it gets rough, surges, misses and is inconsistent.
To date I've confirmed; fresh fuel, gas cap vent is good, new fuel filter, air filter, spark plug, fresh oil. I took carb apart cleaned thoroughly (more than once), replaced float needle and new gaskets. Ran Sea Foam thru carb. Added Sea Foam to fuel. Adjusted valves to specs. Adjusted throttle linkage per the manual. Took float bowl solenoid out and confirmed it operates when the key is turned. Any other suggestions?
It seems like its not getting enough fuel every 2 seconds but don't see how the carb isn't clean. Only has idle adjust screw and mixture needle with limiter cap. Manual says the mixture needle can't be removed without breaking it. I suspect it could be a problem sense it doesn't seem to effect engine when adjusting it within the range allowed by the limiter cap. I sprayed carb cleaner in the hole while turning the needle hoping to clean it. Also, I replaced the fuel filter with the same kind that was on it. The package says for engines with fuel pumps (which mine doesnt have) although it originally ran fine with the old one.
The throttle/air vane moves sporadically as the engine does. Possibly governor issue? Any suggestions would be greatly appreciated, I'm out of ideas. Thanks in advance.