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You might have a sticking float.
Might also check the fuel filter - it might be clogged.
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∙ 13y ago
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Why will Weed Eater 20 Inch Lawn Mower will start but will not stay running?
clean the air filter air is being restricted
Lawn mower will not stay running?
Possible buildup in the line from the gas tank to the carb.
How do you install lawn mower bag?
How do you install a lawn mower bag my won,t stay on
Can a lawn mower blade fly off the bottom of a lawn mower?
It can fall of your mower if you haven't screwed it on tight enough for it to stay
Mower will start but wont stay running?
dirty carb bowl or water in the carb
Lawn mower won't stay running Not getting enough fuel?
There are a couple of reasons why a lawnmower will not stay running or not getting fuel. The carburetor may be clogged up or the lawnmower gas may have water in it.
Your lawn mower starts if you keep putting gas in carburetor but wont stay running?
The fuel filter is clogged or the carburetor needs to be cleaned and/or adjusted.
Lawn mower won't stay running?
Check float , fuel cap, fuel filter, Probibly a good carb cleaning would do the trick. Hope this helped
Why battery does not stay charged on your lawn mower?
Dead cell in battery, loose of corroded battery connections, or the charging system on the mower engine is defective.
Bolens 4.5 hp 21 rear bag The mower will not stay running unless you keep priming it with the primer bulb?
remove the the bowl on the carb and clean with carb cleaner, be sure to clean the main jet. and the small holes in the bolt that holds the bowl on, if these are plugged the mower will start but not stay running
Why does your Craftsman 4.5 HP model 917.388040 lawn mower start when priming the bulb but then quits after 2-3 seconds The engine will stay running if?
You just buy a carburetor re-build kit, clean all the parts and follow the simple directions to puy it back together. You can doi it, it's just not that hard and beats spending 250 bucks for a new mower!
Why does your Craftsman 4.5 HP model 917.388040 lawn mower start when priming the bulb but then quits after 2 3 seconds The engine will stay running if continued bulb priming?
Float is stuck , carb need a good cleaning. If you get lucky might get away with a good in tank carb cleaner. Good luck
