I've got a Sears 5.5 horsepower gas mower. It's got a Tecumseh engine -
(Sears model 143-985508, Tecumseh model TVS115-62118C). Date code is
8135, which should mean 1998, day 135.
Today I pulled the mower out and it started fine. I got most of my
large back yard cut and stopped for a break. About 45 minutes later I
go out and yank the pull cord and it doesn't fire at all. I press the
priming bulb a couple times and try again. It starts and then
immediately cuts out. If I yank again, nothing happens.
If I let it sit for a minute or so and try to start it, it fires up and
then cuts out. If I spray starting fluid into the air intake and yank,
the mower starts and runs a bit longer, but still stalls out.
The tank is full. The gas is fresh. The mower had NO issues an hour
What's going on here? I wanna cut my grass!!! :(
A bit more history...
A couple weeks back, I had problems starting up the mower. I drained
the plastic gas tank, and the fuel out of the gas line and carb bown. I
put in fresh gas and the mower started up. It still acted odd, running
at normal speed as long as I was cutting grass. If I stopped cutting,
or passed through a thin area, the mower would start to cut out, then
rev back up... repeating the process roughly every 8 seconds.
So, I figured that the carb was plugged up, or something similar. I
know that the fuel bowl gasket and and the fuel bown nut gasket were
pretty worn out... I assume that this could mess up the float/needle
spec so I went out and picked up some parts.
I ended up with a spark plug, air filter, and the two gaskets mentioned
I pulled the carb off the mower and disassembled it. The innards were
clean as a whistle. No gunge or varnish to be found. I blew everything
out with a bit of carb cleaner to be thorough and reassembled
The mower fired up and ran great! All fixed I though...
Diagrams and specs can be found here:
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