Tiller #1
 

Trying to decide on replacing the two coil pins (3/16 5,200 lbs sheer) in the 3/4 in. primary input shaft or welding the chain sprocket to the shaft as Cub did in the #1A?? Any input would help with the decision. Thanks Bob

Since I know nothing about your welding abilility, Spirol pins would be my suggestion. Plus if the sprocket wears out, it would be much easier to replace.

Jeff

Humm,
I was in to mine but never took off the gears or maybe I saw they were welded? Mine is a 1A also.
I these have sheared the roll pins I think I would drive in new roll pins and weld them. That assures the gear is in the correct location.
Regards,
Chris

Decided to weld - undercut both ends of the gear 45 on the lathe - and weld. Also machined and welded a socket with internal O ring to stiffen and seal the pivot point.

Another Tiller modification - added grease fitting to tine shaft bearing retainer and added some Marine grease (removed fitting and plugged with set screw to clear dust cover). UC-207-20 is relubable. Bob