M5 carb

[Steve Fawks]

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?
 

[pullingforfun]

Could be some blockage in the tank it's self. Had that problem on our U
 

[Craig Thompson]

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.
 

[Steve Fawks]

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.
 

[Alan K]

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.
 

[T.R.K.]

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.
 

[Alan K]

Guess you allready said that didnt you...lol
 

[Steve Fawks]

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.
 

[shinnery]

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