Re: 1940 H problems

Posted by Wayne from MN on May 05, 2008 at 09:04:04 from (66.228.243.49):

In Reply to: 1940 H problems posted by Cpieper on May 05, 2008 at 06:55:11:

1. Open the high speed FUEL mixture screw so you can run at max RPM's, let the engine warm up, & re-adjust the high speed screw for max speed & smoothness. Add 1/2-3/4 turn out for extra power.
2. Idle the engine & adjust the idle AIR screw for smoothest running & turn the screw IN 1/4 turn extra for a bit of richness to reduce acceleration stumble & the need for choke.
3. Re-set the idle speed to 500 RPM or so.
4. Now repeat the entire process to verify all screw settings. Service manual & carb kit instruction settings will just get you "in the ballpark" so you can make the final adjustments.
If any screw adjustments cannot be performed, the carb needs cleaning.

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