Re: Setting carb on a 1947 H

Posted by Wayne Swenson on February 22, 2003 at 21:43:22 from (66.228.233.229):

In Reply to: Setting carb on a 1947 H posted by Brad on February 22, 2003 at 20:27:17:

1. With the engine at operating temperature, open the throttle and run at top rpm's, (1650) now adjust the high speed mixture screw out until the engine begins to smoke (too rich). Turn the high speed mixture screw back in until the engine just begins to loose rpm's (too lean).
Richen the mixture about 3/4 turn for most light power jobs. You may need more fuel (richer) if pulling heavy loads for long periods of time.
2. Idle the engine down & adjust the idle rpm screw for correct speed (450-500 no load).
3. Adjust the idle mixture screw for cleanest idle (lean to rich and then about 1/2 way in between or just a bit on the rich side).
4. Reset idle rpm.
You may want to go through the steps 2 or 3 times to get everything right.
Good luck.

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