DIYbanter - View Single Post - Sears/Murray snowblower - Accessing spark plug on Briggs&Stratton engine

Husky

wrote:
Snow (water) gets sucked into the filter and clogs it.
Very few have filters on them because of that reason.
The ones that do run by the exhaust manifold to get some
heat from the exhaust.

Tom

wrote:

Jeff Taylor wrote:
Since it is a snow blower, there is no air filter and I

always use STA-BIL in my gasoline. I'm not looking forward to getting
at the carburetor.

Thanks!

Why is there no air filter? What does blowing snow have to do with
that?
The filters catch dust and crud in the air, and that can happen in
winter as well as other times of the year (though dirt dust would be
pretty well subdued, I would imagine ;) )

I can't recall ANY engine without an air filter.

Actually, no snow thrower has an air filter, and all snow throwers have
"heaters". The box around the carburetor is there to trap heat from the
exhaust (muffler surface) and pre-heat the air entering the carburetor.
Winter air IS cleaner, and the filter would plug with snow. So no filter
is needed. And, quite frankly, the Tecumseh engines on most snow
throwers last a hell of a lot longer than Tecumseh lawn mower and
tractor engines. First, they run in cleaner environments, no less dirt
abrasion. Second, they run much cooler, so even when people don't run
them full speed to get full cooling, the colder environment keeps them
running cool enough. I see many many many thirty and even forty year old
Tecumseh snow king engines every year. But I haven't seen even a
twenty-five year old Tecumseh mower engine recently. Of course, the last
few years we have hardly even used the snow throwers, have we...?

I'm even considering getting an old Ariens with a Tecumseh H45B running,
just to see if it would win the Tecumseh Oldest Snow Thrower contest. It
is in relatively good shape, but hasn't been run in a few years. The old
updraft Zenith carburetor is probably gummed badly, and there haven't
been any parts available for those in years. I found it in the back of a
buddy's storage garage.