My lawn mower (Craftsman 6hp) starts fine and works for a bit but then
starts dying. After trying this for a few times, then I have a
harder time to start it. When I prime it and keep trying to start
it, I check the spark plug and it is not wet from fuel, so maybe there
is a fuel problem. I left it out side covered, but water might have
gotten in anyways. So I drain all the fuel and drained the
carburetor pan from fuel. There was no water in the fuel. I put
new fuel, check the spark plug too.
The only other thing that I can think of is that 3 months ago, I
did hit something hard with the blade. It was making a slightly
different engine noise for a month or so, but eventually sounded
normal I think. Any ideas what else I could try?
It could be the flywheel sheer pin. Until you mentioned that ran over a
shovel thing (or was it a rake this time?) I was gonna say the carb is
If it's running too lean, you might try wrapping the air cleaner element
with a damp paper towel to choke down the air supply.
But check the flywheel pin; that's cheap and easy.
Kind of a longshot but check your blade. This same type of problem happened
with my Craftsman. The blade was out of tightness due to hitting a wooden
post. It sheared the little knobby things that hold the blade tight and it
caused a tough time starting..
would that prevent gas from getting to the spark plug? Because that
is definitely a problem, I keep priming and pulling and then check the
spark plug and it is dry as dry can be. And would that explain why
it would dry all of a sudden after it starts?
Its fuel or electrical, 2 minutes indicates when the carb is empty it
dies so a fuel passage or float, does it start whan you force gas in
by priming, then its fuel related. if more then a few minutes it could
be the ignition module, see if you get spark after it dies, probably
need a carb rebuild
Gas lawnmower. I tried starting it today again it was difficult.
When I prime it I can smell the gas, I even see some in the air
filter. But after pulling the rope many times to try to start it, I
would expect to see a wet spark plug, but mine is always dry. Last
time when I unscrewed the bottom of the carb pan, there was gas is the
small metal pan. Maybe the problem is past that area? Thanks.
Gravity fed fuel or a pulse-pump to feed fuel? Sounds like the carb
bowl goes empty. I'd remove it and watch the fuel flow for say a cup of
gas; is it a consistant flow or is it slow, just a drip?
Dry plug says no fuel; Next is carb in the line. Then the fuel filter;
those plug easily. Then the fuel tank, usually with a screen over the
output, inside the tank. Tank could need cleaning, could be a plugged
fuel filter, fuel not getting to carb, carb plugged or jets plugged.
Not much more in the ckt.
This could well be nothing but a plugged fuel filter; changed it too?
I've seen on Tecumsehs, sometimes gasket between the carb and the engine
dries out. Might have to remove the carb, put a dab of Permatex #2 non
hardening gasket crap on the both sides of the gasket, and bolt er back on.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.