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Posted by DerbyDad03 on May 14, 2008, 1:48 pm
> I have a 6 year old White LC210 push mower which has been terrific
> until now. =A0It has a 6.0 HP B&S Quantum engine that includes a shut
> off key. =A0Symptoms: =A0mower runs for a few seconds until the prime is
> burned off and then stops. =A0Background: =A0I've been using the mower
> with no problem this year (so that probably rules out bad gas which I
> replaced with a fresh fill anyway). =A0I may have changed the position
> of the shut off key (but then restored it). =A0I have checked the plug
> and air filter and don't see any problem. =A0I have replaced the gasket
> between the carburator and air cleaner to no avail. =A0I removed the
> carburator and did not see anything unusual. =A0When I changed the oil
> at the beginning of the season by flipping the mower upside down
> (can't get to the oil plug without out removing the engine from the
> deck - my only serious problem with the design so far), some oil
> leaked into the air cleaner. =A0I replaced the filter and have since
> used the mower with no problem although there was some smoke until the
> oil residue had been burned off.
>
> The only thing that occurs to me as I sit here is that when I moved
> the shut off key, I did not get it back to the correct position. =A0I'm
> not sure what this key does. =A0If it stops the flow of gas, than I may
> need to play with the key. =A0If it shuts off the spark, then I doubt
> that it is the problem since I can get it to run, just not beyond
> burning the prime. =A0Looks like I need to take a closer look at the
> shut off key mechanism. =A0Any thoughts?
>
> Thanks.
re: I'm not sure what this key does.
The key typically grounds the electrical system and prevents the plug
from firing. If you had a ground problem with the key, I don't think
the mower would run for even a few seconds because you'd never get any
spark.
At least that's the way it's worked on the 2 snowblowers that I had
that had keys - lost a key once and replaced it with a simple toggle
switch.
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