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lawnmower won't start dave.bridges 08-24-2007
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Posted by on August 24, 2007, 10:04 am
I have a Murray lawnmower with a Briggs and Stratton 6.0 HP engine
that dosen't want to start. I tried new filters, spark plugs, fresh
gas and checked the primer pump. I just pull the cord and nothing
happens. When i had the filter off I noticed that there is a spring
which connects the throttle lever to the carburetor choke plate which
looks pretty worn out. When i move the throttle lever, nothing
happens to the choke plate (although I can move it manually). Could
this be the reason for the thing not starting? Or does anyone else
have any better suggestions?


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Posted by willshak on August 24, 2007, 10:18 am
on 8/24/2007 10:04 AM dave.bridges@gmail.com said the following:
> I have a Murray lawnmower with a Briggs and Stratton 6.0 HP engine
> that dosen't want to start. I tried new filters, spark plugs, fresh
> gas and checked the primer pump. I just pull the cord and nothing
> happens. When i had the filter off I noticed that there is a spring
> which connects the throttle lever to the carburetor choke plate which
> looks pretty worn out. When i move the throttle lever, nothing
> happens to the choke plate (although I can move it manually). Could
> this be the reason for the thing not starting? Or does anyone else
> have any better suggestions?
>
>

Unless you have an automatic choke, the throttle lever does not move the
choke. The choke lever moves the choke plate, whether the engine is
running or not. Perhaps you are flooding the engine. Try a little
starting fluid (or choke cleaner) sprayed into the throttle before starting.

--

Bill
In Hamptonburgh, NY
To email, remove the double zeroes after @

Posted by ransley on August 24, 2007, 10:49 am
> on 8/24/2007 10:04 AM dave.brid...@gmail.com said the following:
>
> > I have a Murray lawnmower with a Briggs and Stratton 6.0 HP engine
> > that dosen't want to start. I tried new filters, spark plugs, fresh
> > gas and checked the primer pump. I just pull the cord and nothing
> > happens. When i had the filter off I noticed that there is a spring
> > which connects the throttle lever to the carburetor choke plate which
> > looks pretty worn out. When i move the throttle lever, nothing
> > happens to the choke plate (although I can move it manually). Could
> > this be the reason for the thing not starting? Or does anyone else
> > have any better suggestions?
>
> Unless you have an automatic choke, the throttle lever does not move the
> choke. The choke lever moves the choke plate, whether the engine is
> running or not. Perhaps you are flooding the engine. Try a little
> starting fluid (or choke cleaner) sprayed into the throttle before starting.
>
> --
>
> Bill
> In Hamptonburgh, NY
> To email, remove the double zeroes after @

You need fuel, air and spark, if starting fliud does nothing remove
and groung the plug and pull the cord to see if its electrical


Posted by on August 24, 2007, 11:22 am
On Aug 24, 10:04 am, dave.brid...@gmail.com wrote:
> I have a Murray lawnmower with a Briggs and Stratton 6.0 HP engine
> that dosen't want to start. I tried new filters, spark plugs, fresh
> gas and checked the primer pump. I just pull the cord and nothing
> happens. When i had the filter off I noticed that there is a spring
> which connects the throttle lever to the carburetor choke plate which
> looks pretty worn out. When i move the throttle lever, nothing
> happens to the choke plate (although I can move it manually). Could
> this be the reason for the thing not starting? Or does anyone else
> have any better suggestions?

Check for spark. Pull the plug, stuff the wire back on, and lay the
threaded end against a head bolt on the engine. Pull the cord. If it
sparks blue, you've got spark. $20 says you don't have any spark.

Did you hit anything with the blades recently? I don't know if they
still do this, but the flywheel used to have an aluminum key that
would shear if you hit anything too hard. Instead of twisting off the
crankshaft, the flywheel shears the key.


Posted by on August 24, 2007, 1:02 pm
On Fri, 24 Aug 2007 07:04:42 -0700, dave.bridges@gmail.com wrote:

>I have a Murray lawnmower with a Briggs and Stratton 6.0 HP engine
>that dosen't want to start. I tried new filters, spark plugs, fresh
>gas and checked the primer pump. I just pull the cord and nothing
>happens. When i had the filter off I noticed that there is a spring
>which connects the throttle lever to the carburetor choke plate which
>looks pretty worn out. When i move the throttle lever, nothing
>happens to the choke plate (although I can move it manually). Could
>this be the reason for the thing not starting? Or does anyone else
>have any better suggestions?


Squirt some gas in the carb, open the throttle all the way and pull.
If you can't even get a pop I bet you have no spark. It is usually
easiest to check spark with a helper pulling the cord while you watch.
You can usually just stick a screwdriver in the end of the plug wire,
hold it about 1/4" from the block and have your helprer pull the cord.
You want a hot blue spark. A thready yellow spark is marginal and if
you can't get 1/8" out of it the engine will not start.
These engines have points that can wear down. They may be under a
cover, out where you can get to them but older or cheaper engines have
them under the flywheel.

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