120 III pump rpm's
04-17-2005, 06:04 PM
#1
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120 III pump rpm's
I've just got a second hand 120 III with pump,
I'm getting about 8400 rpm with APC 16x6 and Wildcat 15%
Engine works fine.
Is this about normal ?
I'm getting about 8400 rpm with APC 16x6 and Wildcat 15%
Engine works fine.
Is this about normal ?
04-19-2005, 11:06 AM
#4
My Feedback: (11)
RE: 120 III pump rpm's
The O.S. FS-120 Surpass III has a carburetor with a separate idle needle. If you look into the carb when it's opened to full throttle, you can see the needle and the nozzle. At full throttle, there should be a 3-4 mm gap between them at an initial setting.
The FS-120 Surpass I and II engines had a different idle circuit, and the idle mixture screw did not affect top-end running.
The FS-120 Surpass I and II engines had a different idle circuit, and the idle mixture screw did not affect top-end running.
