If this is the smae type I used to have, which your description sounds
like, there are 2 dirve blets, one form the engien to a center pulley,
and a second one form the center pulley to the transaxle. The middle
sheave of the center pu;;ey moves up and down in sesponce to the speed
lever tightening the belts, and works with a centrfical pulley to change
the speed. On mine the 3 pins that the cneter sheave slide on had
become worn, and it would stick unless persuaded a little. Replacing
the 3 pins and lubricating the pulley aong with a new set of belts soved
the problem. It has bene several years ago that I sold mine, but at
that time universla belts from an auto parts store would not work
properly. To get correct speeds I had to buy Sears belts.
Trevor Boicey wrote:
>
> I have a 44" 16hp Craftsman lawn tractor. Older but not antique.
>
> I've had to fix it up a bit since I acquired it, but it seems ok,
> now, I've used it all of this year so far, just mowing.
>
> This is a belt drive tractor, the gearbox only has one speed and the
> speeds are changed by belt geometry.
>
> Anybody know these systems?
>
> Lately, it doesn't seem to want to go fast. No matter what the speed
> lever is set to it seems to be "1 or 2" speed, when it goes up to seven.
>
> However, if I put my toe under the brake lever on the left foot, and
> pull it back while riding, it will accelerate to regular speed.
>
> The spring tension on that pedal feels normal, would this sound like
> "time for new belts"?
>
> I have already pulled off the belts so putting new ones on is no
> more work than just putting it back together, but the belts didn't
> seem too bad... I was somewhat hoping they'd be rattier to explain the
> problem...
>
> Thanks.
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