#2: Re: MTD lawn tractor speed control pulley stuck
Posted on 2006-07-03 00:57:16 by Srgnt Billko
"Roger Blake" <rogblake10@iname10.com> wrote in message
news:slrneacosl.sa4.rogblake10@moog.netaxs.com...
> Yes, I really should have moved the car before mowing that area of the
> lawn.
> Yesterday afternoon I managed to snag the clutch/brake control pedal of my
> 1996-vintage MTD garden tractor on the front bumper of an old station
> wagon
> wagon while mowing around the car. Before I knew what was happening,
> the pedal was bent backwards way too far and suddenly the tractor was
> locked into "high gear," and the speed control lever (still set for a
> moderate speed) wouldn't budge. I finished mowing the lawn by riding
> the clutch to control speed.
>
> This is a belt-drive mower and I can see that the (6) speeds on this
> thing are selected via a split pulley that varies its effective diameter
> by the halves moving toward or away from each other. It appears to be
> locked in the furthest apart (smallest effective diameter) position,
> hence the "high gear" effect.
>
> For the life of me I can't see how this variable pulley is controlled.
> There
> is a control rod that operates the "clutch" by moving the pulley assembly
> laterally and thereby loosening the drive belt. This is interlocked to the
> speed control lever with a Rube Goldberg-esque system of control rods,
> but the pulley halves don't move at all when the control rod is worked.
>
> Anyone familiar with this setup? Ideas??
>
> --
> Roger Blake
> (Subtract 10 for email.)
Not sure of the picture - but you might have to take the belt off to remove
the pressure before you can slide the pulley back together.
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