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Posted by Bob F on October 7, 2009, 3:53 pm
Michael Dobony wrote:
> I have a 6.75hp Craftsman lawnmower with a Techumsa engine and my son
> has a
> 4.5hp Craftsman lawnmower with a Briggs and Stratton engine. I just
> cut my son's very tall, thick lawn (3 weeks of rainy weather) with
> his 4.5hp mower and it never bogged down to the point of stalling and
> rarely slowed down much, even taking full width cuts. OTOH, my 6.75hp
> mower bogs down on thin, long lawn (2 weeks little rain) to the point
> of totally dying if I take any more than a 1/4 width cut. What gives?
Sharp blade?
I recently discovered a better way to really shorten the grass without loading
up the mower. I try to mow shorter during the non-summer months (Supposedly
reduces fungus problems). Mowing with the mower set as low as I want results in
it frequently loading down. I tried mowing with the front wheels set to the
lowest position, and the rear wheels on the highest setting. This seems to
enable the Snapper mower to cut cleanly, and allows more airflow which carries
the grass out to the bag better. I didn't have any stalling problem using it
this way.
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Posted by dpb on October 7, 2009, 4:19 pm
Michael Dobony wrote:
> I have a 6.75hp Craftsman lawnmower with a Techumsa engine and my son has a
> 4.5hp Craftsman lawnmower with a Briggs and Stratton engine. I just cut my
> son's very tall, thick lawn (3 weeks of rainy weather) with his 4.5hp mower
> and it never bogged down to the point of stalling and rarely slowed down
> much, even taking full width cuts. OTOH, my 6.75hp mower bogs down on thin,
> long lawn (2 weeks little rain) to the point of totally dying if I take any
> more than a 1/4 width cut. What gives?
>
> Mike D.
I'd guess needs sharpening for starters and mixture is likely off so
isn't running well. Governor may be stuck so isn't opening under load
properly is another possibility.
It ain't a failure of Tecumseh engines; there's something not right.
--
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Posted by on October 7, 2009, 6:59 pm
>Michael Dobony wrote:
>> I have a 6.75hp Craftsman lawnmower with a Techumsa engine and my son has a
>> 4.5hp Craftsman lawnmower with a Briggs and Stratton engine. I just cut my
>> son's very tall, thick lawn (3 weeks of rainy weather) with his 4.5hp mower
>> and it never bogged down to the point of stalling and rarely slowed down
>> much, even taking full width cuts. OTOH, my 6.75hp mower bogs down on thin,
>> long lawn (2 weeks little rain) to the point of totally dying if I take any
>> more than a 1/4 width cut. What gives?
>>
>> Mike D.
>I'd guess needs sharpening for starters and mixture is likely off so
>isn't running well. Governor may be stuck so isn't opening under load
>properly is another possibility.
>It ain't a failure of Tecumseh engines; there's something not right.
When was the air filter last replaced?
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Posted by Stormin Mormon on October 7, 2009, 8:46 pm
Water in the gas. Throttle problems. Burnt valve. Weak spark
plug. Low octane gasoline. Clogged metering jet in the carb.
Sticky carb float. Oversize air gap to flywheel from coil.
Partial shear of flywheel shear pin. Leaky spark wire. Old,
or poor quality motor oil. Grass caked under the deck. Dull
blade. Want some more possiblities?
--
Christopher A. Young
Learn more about Jesus
www.lds.org
.
wrote:
When was the air filter last replaced?
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Posted by bob haller on October 7, 2009, 9:17 pm
some years ago for safety reasons the feds limited the blades tip
speed, cutting it dramatically. this cut effective power.
thats why horse power climbed while perform,ance decreased a lot.
its the age of the mower
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> has a
> 4.5hp Craftsman lawnmower with a Briggs and Stratton engine. I just
> cut my son's very tall, thick lawn (3 weeks of rainy weather) with
> his 4.5hp mower and it never bogged down to the point of stalling and
> rarely slowed down much, even taking full width cuts. OTOH, my 6.75hp
> mower bogs down on thin, long lawn (2 weeks little rain) to the point
> of totally dying if I take any more than a 1/4 width cut. What gives?