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M5 carb

S

Steve Fawks

Member
Just got my M5 back from overhaul and paint. It starts easy, idles fine, and runs with a load great....for a few minutes. Then it coughs and sputters like it's running out of gas until I let off the throttle.

New fuel line was run during restoration. I tried different adjustments on the carb. Any ideas?
 
I have also had a problem where I bought a new fuel bowl and the company that installed the outlet on the bowl installed teflon tape and was partially blocking fuel leaving the outlet.

This was a nightmare to find... but I would suspect it could even be at the connection points at the new fuel line? well its worth a try.
 
Guess I"ll start by disconnecting the fuel line at the carb and checking the flow. If that"s good, I"ll move to carb itself. Thanks.
 
Odd thought but take a look in the tank as well....there may be an obstruction that floats over the hole occasionally that slows or stops the flow.
 
When I had that problem it was fuel varnish glaze over most of the filter screen. Couldn't tell it when the screen was wet, but was obvious when dry.
 
Is there anything that would come about with the tractor warming up? The first few minutes seem perfect? I have the fuel shut off when not using the tractor, it starts fine and runs for several minutes at whatever speed. Then it starts pitching a fit until I cut the throttle.
 
All my M5s are propane or diesel, should it have a vented cap on the tank? My only gas moline is a Big Mo 400 M with the round tank.
Bryce
 
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