Power is affected by the setting of the main jet, but it is not easy to adjust for noticeably more power without having it on a dynamometer. You want to first be sure that your timing, spark and valve adjustments are exactly right, and then put it on a dyno if you can gain access to one. If you can't get it on a dyno your best bet is to get set up to mow or whatever job you have where you can notice an increase or decrease in power as you have already, then stop and adjust a little.It will be unlikely that you will notice a change unless it was way out. When under a heavy load if you are seeing black smoke it is an indication of running rich. Another possible test is to pull a loaded wagon of some sort up a good grade.
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Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
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