OS 120 pumped
03-07-2018, 09:04 AM
#1
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OS 120 pumped
I'm looking for information, and, or a manual for an older OS 120 pumped engine, it has two lines going into the pump, one coming out to carburetor. I am not sure how to plumb it.
03-08-2018, 09:17 PM
#2
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you didn't give enough info, I will guess it's a FS 120S3
I can not get the Manual to link, only the photo show, you will have go to the link and scroll down to the FS 120S3,
the manual shows
A) To draw fuel from tank to pump nipple marked 'IN'
B)To deliver fuel from pump nipple marked 'OUT' to carburettor.
C) To connect crankcase breather nipple (behind camshaft housing) to intake pipe.
D)To deliver crankcase pressure pulses to pump diaphragm.
https://www.osengines.com/manuals/index.html
Jim
I can not get the Manual to link, only the photo show, you will have go to the link and scroll down to the FS 120S3,
the manual shows
A) To draw fuel from tank to pump nipple marked 'IN'
B)To deliver fuel from pump nipple marked 'OUT' to carburettor.
C) To connect crankcase breather nipple (behind camshaft housing) to intake pipe.
D)To deliver crankcase pressure pulses to pump diaphragm.
https://www.osengines.com/manuals/index.html
Jim
Last edited by the Wasp; 03-08-2018 at 09:33 PM.
