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Antique Gas Engine Discussion

Fairbanks Morse model H 6hp needs help


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  #11  
Old 02-01-2019, 09:12:17 PM
Zach Nagel Zach Nagel is offline
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Default Re: Fairbanks Morse model H 6hp needs help

The valves should be a snug fit it their guides and the springs in good condition especially the exhaust. If your engine is missing the intake valve cover, be sure to plug the screw holes in the head as 1 or 2 go right into the intake passage and will cause a loss of vacuum. I time the ignition late on a loafing show engine. As far as not running on the gas side, there is a check valve in the bottom of the carb on that side that is usually stuck. Its part # 603h in the pic above the hopper. The butter fly is also pictured, it should have a small notch that is in line with the fuel nozzle that sticks out of the back of the carb.
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  #12  
Old 02-05-2019, 06:21:47 PM
Jim Gauer Jim Gauer is offline
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Default Re: Fairbanks Morse model H 6hp needs help

We think it is a 1914
Thanks for picture of carb that is my carb.
I know of no check valve but I will check - carb was welded up
It was damaged badly

How slow does your engine run ?

Thanks for info
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  #13  
Old 02-06-2019, 07:19:18 PM
Zach Nagel Zach Nagel is offline
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Default Re: Fairbanks Morse model H 6hp needs help

My engine will run fairly slow, i'd guess under 200 rpms and runs smooth but it has to have the choke set just right. Also a hot spark. You might try running on a battery and coil and see if that helps. Mine runs better on a battery but I'm working on getting it better on the mag.
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Old 02-08-2019, 09:58:06 AM
Bill Trainor Bill Trainor is offline
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Default Re: Fairbanks Morse model H 6hp needs help

My 6hp will run real nice down to about 150 rpm on the battery. It wont run on the mag much below 180 rpm. I also run on gasoline on the kero side. My fuel nozzle was missing when I started, so I had to experiment with different lengths and angles, which both made a difference. Great running engines.
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