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Lawnmower won't start synergy3000 03-12-2007
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Posted by Bob F on March 13, 2007, 5:03 pm



> > I picked up a year old Toro lawnmower from a moving sale.
> > I tried to start it up but nothing happens. It appears gas was left in
> > the lawnmower over the winter. Not sure any stabilizer was added,
> > probably not as it does not want to start. What should I do to try and
> > get it started? Deal was too good to pass up so I figured it was worth
> > the hassle.
> >
> > Thanks
>
> I use starting ether to test for a fuel problem. If a short squirt
> into the throat of the carb will let you start and run the engine for
> a few seconds, you have a fuel system problem. A squirt of
> starting ether is more definitive than a squirt of gas (which doesn't
> always work).

It always has for me.

Bob



Posted by N8N on March 13, 2007, 8:54 am


> I picked up a year old Toro lawnmower from a moving sale.
> I tried to start it up but nothing happens. It appears gas was left in
> the lawnmower over the winter. Not sure any stabilizer was added,
> probably not as it does not want to start. What should I do to try and
> get it started? Deal was too good to pass up so I figured it was worth
> the hassle.
>
> Thanks

If it has a Tecumseh engine, check the flywheel key. If it has
sheared, which is fairly common, the timing will be off and the engine
will not run. Common failure mode is hitting a rock/brick/whatever
with blade, stopping engine, inertia of flywheel shears key and
flywheel keeps rotating, magnet on flywheel is no longer in proper
location with respect to crank throw.

nate


Posted by Bob F on March 13, 2007, 4:36 pm



> > I picked up a year old Toro lawnmower from a moving sale.
> > I tried to start it up but nothing happens. It appears gas was left in
> > the lawnmower over the winter. Not sure any stabilizer was added,
> > probably not as it does not want to start. What should I do to try and
> > get it started? Deal was too good to pass up so I figured it was worth
> > the hassle.
> >
> > Thanks
>
> If it has a Tecumseh engine, check the flywheel key. If it has
> sheared, which is fairly common, the timing will be off and the engine
> will not run. Common failure mode is hitting a rock/brick/whatever
> with blade, stopping engine, inertia of flywheel shears key and
> flywheel keeps rotating, magnet on flywheel is no longer in proper
> location with respect to crank throw.

This happens to B&S engines also. Another symptom is hard
jerks on the rope while starting, often breaking the rope.

Bob



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