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Choke help please

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19D motor {i believe} when starting from cold I put on full choke, then after it warms up about 5 minutes start closing the choke. No matter how warm the engine gets I can not close the choke all the way. If I do it will stall out. I have plenty of gas in the tank and the fuel filter is clean. Any suggestions as to what I can do to get the carb running properly ? Thnx for any help

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What was said above. Add checking the tank filler cap to be certain it is breathing or vented. You might have to remove and clean the main jet, or simply remove and clean the carburetor. But, it sounds as if a simple adjustment might do the trick.

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Check idle speed also. Some of those old ones don't idle all that slow(unless "enhanced:D" The adjustments of the idle mix/main mix and idle speed are a balance act which starts with idle mix once warm.

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