gas issues big mo 400

mike f from Tx · Jan 17, 2017

Have not started on 4 or 5 months. Have fuel at the sight glass but will only start on starter fluid. stuck float? Can I drop the lower half of the bowl to check for fuel? Thanks<>Mike

rvirgil_KS · Jan 17, 2017

There should be a drain plug on bottom of bowl that you can remove to check for fuel flow.

I have a 4Star that should be same engine as Big Mo 400. On it the carburetor and drain plug set just above and slightly ahead of the starter.

I would put a plastic bag over the end the starter before I pulled the drain plug in the carburetor.

mike f from Tx · Jan 22, 2017

I pulled the drain plug no gas. Will I have to pull the carb to fix the float?

rvirgil_KS · Jan 23, 2017

Pulling the carb should not be difficult

Plunger valve operated by the float may be stuck. Remove drain plug, turn on fuel shutoff, then take a screw drive, grab the shaft and tap the top of the carb with the screw driver handle. If stuck, that may knock the plunger loose.

Before pulling carb, I would also disconnect input to carb and see if you have fuel there. You could have obstruction in fuel line

gas issues big mo 400

mike f from Tx

New User

rvirgil_KS

Well-known Member

mike f from Tx

New User

rvirgil_KS

Well-known Member

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