Re: Question on governor spring.

Posted by BF8690 on April 20, 2007 at 08:29:44 from (138.163.0.38):

In Reply to: Question on governor spring. posted by unioncreek on April 20, 2007 at 06:54:10:

The spring should be loose at idle. Atleast mine is. The service manual gives good instruction on how to adjust the governor as well as the throttle linkage from the governor to the carb. Inside the governor are two stop bolts. One of them sets the max RPM at military, or full throttle. I don't remember exactly what the one does. Take off the side plate from the governor. Take off the top breather tube from the governor, then drop the bowl off of the carb. Open the throttle as far as it will go, you may need someone to hold it back for you. Make sure that the butterfly is open all of the way. If it is not, then adjust the governor throttle lnkage at the top of the breather tube access for the proper throttle setting. It has been my experience that if this is not correct at full throttle it will effect idle also. That will ensure that the max RPM setting and idle setting for the carb is correct. You may want to check your idle speed and fuel main needle. It could be as simple as it is to rich, to lean or not enough RPM at idle. You can also modify your fuel meter tube inside the carb, since you have your bowl off it will be easy to do. Take out the main needle. Then take out the fuel metering tube. Then insert drill bits, into the main jet, one at a time starting with the smallest one. When you get to the drill bit that won't fit drill out the main jet. Then using the same drill bit drill out the the two lower holes in the fuel metering tube. This will give you much more adjustability at the main jet needle. IH carbs were notoriously lean for fuel economy. I did all of this to my 1944 M and it runs way better than it did prior to. Hope this helps.

Replies:

• Re: Question on governor spring. unioncreek 09:48:43 04/20/07 (3)
  • Re: Question on governor spring. BF8690 12:06:48 04/20/07 (0)
  • Please Back Away From the Toolkit A. Bohemian 11:55:16 04/20/07 (1)
    • Re: Please Back Away From the Toolkit Bf8690 12:16:54 04/20/07 (0)

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