My snowblower for my medium frame tractor (model 18311) has a tensioning block to take up slack on the snowblower chain. In the parts diagrams, it is part number 1726829. The one in the snowblower is worn and I have no more adjustment to take up slack. The block I took out is a plastic disk, 2" in dia and 1.1" thick with a 3/8 hole in it, and appears to be nylon. Is this really what is supposed to be in there?
The block has a steel spacer on each side, with a bolt running through all three, and a nut with a lockwasher on the end of the bolt. When you tighten the lockwasher down, it squeezes the spacers against the block. The parts break down seems to agree with this, but I would have thought that the block being round, would be better rotating.
I looked at my large frame and tube frame snowblowers, but neither have the tensioning block in the design.
Can anyone confirm that this is the correct set up?