Posted by Bob on November 25, 2010 at 17:30:38 from (69.178.228.68):
In Reply to: carb adjustment posted by K-Ho on November 25, 2010 at 16:12:51:
First off, are you running an ethanol blend or have you added "dry gas", either of which should prevent fuel system freezeup?
There's a jet BELOW the "load" needle and a passage from there that leads to the bottom of the float bowl.
If that jet or passage are clogged with ice/water/crud/debris/varnish the engine will be short of fuel.
Of course, if gas flow is restricted anywhere between the gas tank and the float bowl the engine will starve for fuel, as well.
The test is to (BE SAFE and prepared to catch the flow of gas in a container) remove the bottom 1/8" pipe thread plug from the float bowl. There will be a quick flow of gas as the bowl empties, then there MUST be a steady flow of gas adequate to support the engine under full load.
If that flow is adequate, the trouble is IN the carb, if not it's in the sediment bowl area or in the brass screen at the carb inlet elbow.
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