Cub Cadet 1170 Belt, Transmission issues.

bertsmobile1

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Nov 29, 2014
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Pull the deck off.
Stand the mower on its bum
Take a couple of phots with the camers sitting on something solid so they are in good focus.
Post the photos.
A couple showing the entire transmission belt run and hen some close ups of the clutch pulleys and brake.

As a long shot you might pull the drive pulley and check the key is intact.
If the box is bad it will make a grating sound.
Surging with a vari drive set up happens when the slack sort f accumulates in a section of the belt then equalizes then builds up again and is generally due to bad tensioning arm or a bound bearing, paticularly in the vari drive pulley.
 

slowgsxr97

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Jun 11, 2015
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Haven't had much time to tinker with this, been working alot. Heres a quick shot. Sorry for the poor quality pic.

mower3.jpg
 

bertsmobile1

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Open the box.
Inside you will find a rod with 3 slots that run over a spring loaded ball bearing.
This sets the position of the shaft.
The shaft is connected to the F-N-R shifter on the mower and shift fork on the other end.
Pull it apart and it will be very apparent how it works.
The gears are shimmed to make proper contact anc if the grease has dried out they wear the case so might need extra packing.
The input shaft has a pulley which you will need to remove to get at the case screws, Some are splined some are keyed and both can break particularly if the driver is lazy and does not stop before shifting or the clutch drags
 
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