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carrero57_gw

Craftsman 917.388153 lawnmower won't start (fuel problem)

carrero57
13 years ago

So I've done my due diligence and searched this forum looking for answers and now I'm posting for advice.

Symptoms:

I can get the mower to run for 2-3 seconds by either jetting carb cleaner directly into the cylinder (via intake or plug port) or via pumping away at the primer bulb. Either way, it runs clean for a few strokes and then dies.

Attempts:

Drained oil and replaced

Drained fuel and replaced

Replaced spark plug

Removed bolt at bottom of carb and cleaned out horizontal thru-hole as well as vertical inline hole.

Verified float function and plunger function (magnetic device connected to rear of float w/ wire clip)

Verified fuel supply is unhindered en route to carb

Tightened lines leading from carb to cylinder with hose clamps

What am I missing? I know the problem exists somewhere between the carb and the cylinder, but I'm not sure how to proceed.

After passing through the main jet bolt, is it possible a clog exists directly above in the threaded passageway?

Does the cylinder receive fuel via vacuum or via pressure?

Thanks in advance for the assistance!

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