Bill- Coincidently I am at the stage on my T140V of fitting my clutch rod/cable and outer gearbox cover. Measured my rod and it is 296mm or 11" & 21/32". I have another gearbox for my next T140E project and that is the same.

cheers Bill

 

This may be the cable adjuster on the tranny cover not adjusted correctly or your clutch pack is thicker than stock. My clutch rod seemed too short after installing a 7 plate clutch, I chose to make a new pressure plate adjuster screw. You could also make a longer clutch rod, or cut yours in half and put a bearing ball between the halves. After doing either of these the adjuster will be very close to the cover and fine tuning may be required to prevent interference, which will prevent the clutch from releasing.

 

From "General Data" in the manual: pushrod length 11.812" - 1.822" .
So the nominal size is 11-13/16". It's not a critical dimension, unless you've run out of adjustment.

 

I had one that was 1/8" too short, and it wouldn't work at all well. You may be best advised to get a new one the length Pete has given.