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Posted by on June 3, 2007, 12:09 pm
I have an 8 year old Craftsman tractor with 46" deck and 20hp Kohler
engine.
Last summer it started bogging on and off when the cutter was
engaged. This year it can't seem to keep the rpm up at all. I'm not
talking about excessively long or wet grass. It used to cut this
grass just fine.
The engine runs fine when either the cutter is not engaged or it is
engaged and not cutting through any significant amount of grass.
The deck of the mower spins free and smooth (bearing and pullies are
fine) and the blades are sharp.
I've recently replaced the plugs, air filter, oil, oil filter, and a
new fuel filter is on the way.
I'm considering getting a carb rebuild kit but not sure if this will
help condisering the engine runs fine when not cutting.
Any suggestions would be greatly appreciated.
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Posted by David Martel on June 3, 2007, 12:27 pm
Deja,
How tall is the grass? How often do you mow? In tall grass how fast do
you mow? There's nothing in your post that suggests a carb or a mower
problem.
Dave M.
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Posted by Tony Sivori on June 3, 2007, 12:32 pm
deja wrote:
> I have an 8 year old Craftsman tractor with 46" deck and 20hp Kohler
> engine.
>
> Last summer it started bogging on and off when the cutter was engaged.
> This year it can't seem to keep the rpm up at all. I'm not talking
> about excessively long or wet grass. It used to cut this grass just
> fine.
Check the compression.
--
Tony Sivori
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Posted by Larry Caldwell on June 3, 2007, 3:03 pm
TonySivori@yahoo.com (Tony Sivori) says...
> Check the compression.
Yeah, it may need a valve job.
--
For email, replace firstnamelastinitial
with my first name and last initial.
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Posted by Joseph Meehan on June 3, 2007, 12:35 pm
deja@homerlex.mailshell.com wrote:
> I have an 8 year old Craftsman tractor with 46" deck and 20hp Kohler
> engine.
> Last summer it started bogging on and off when the cutter was
> engaged. This year it can't seem to keep the rpm up at all. I'm not
> talking about excessively long or wet grass. It used to cut this
> grass just fine.
> The engine runs fine when either the cutter is not engaged or it is
> engaged and not cutting through any significant amount of grass.
> The deck of the mower spins free and smooth (bearing and pullies are
> fine) and the blades are sharp.
> I've recently replaced the plugs, air filter, oil, oil filter, and a
> new fuel filter is on the way.
> I'm considering getting a carb rebuild kit but not sure if this will
> help condisering the engine runs fine when not cutting.
> Any suggestions would be greatly appreciated.
I did not see any mention of sharpening those blades? You may need a
compression test to determine what condition the motor is in. I would not
be too hopeful about a car rebuild, but I sure can't say it could not work.
--
Joseph Meehan
Dia 's Muire duit
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> engine.
>
> Last summer it started bogging on and off when the cutter was engaged.
> This year it can't seem to keep the rpm up at all. I'm not talking
> about excessively long or wet grass. It used to cut this grass just
> fine.