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Old 04-13-2003, 08:43 AM
Doc Pete Doc Pete is offline
LawnSite Gold Member
Join Date: Mar 2002
Location: New Jersey
Posts: 3,469
FWIW, all you have to do increase RPM is bend the tab that holds throttle spring and increase the tension. Becareful, you don't have to move it alot. Use a tach. Also, I've taked to the B&S technicans and they've had motors running at 4,000 all the time with no problems, plus you don't have to worry about any lean problems (according to them). Finally, I ran my 16 and 20 horse Briggs for three years at 3,850 prm without any probems, in fact they were a bit smoother.........
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Old 04-18-2003, 12:02 AM
Robert Doubrava's Avatar
Robert Doubrava Robert Doubrava is offline
LawnSite Senior Member
Join Date: Aug 2001
Location: Beeville, Texas
Posts: 342
I looked in my manual and it says one reason for the engine running "slow" is that one cylinder has lost compression. That might not have happened, though. To check just get a compression tester and crank it over a few times and note the PSI on one cylinder and check the other. If you got it fixed already, disregard this!

My truck:

1970 Chevrolet C20

My equipment:

1984 22" Yazoo BigWheel 5hp B&S I/C
1993 38" Craftsman rider 12.5hp B&S I/C
2004 Craftsman 17" gas weed-wacker
2004 Craftsman gas blower
1982 Trim-All edger 2hp B&S
1990's Stihl 009L, 14" bar
1964 McCulloch 250, 20" bar
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