Combines 8820 walkers slowing down

[yellerfeller]

soon after I got my 7720, I tightened the bolts holding the wood blocks on the back of the walkers. I overtightened them and the walker clutch started to slip. don't know if this will help, but a possibility.

 

[davedan]

the walker runs off of the counter shaft however what runs the countershaft, better check further back down the line.

 

[bill9750sts]

assuming your cranks, wood blocks and walkers are ok, the problem is with the length of the bushing in the clutch, trim 1_8" of all four bushings, this problem has been more common as the machines are aging, hope this will help.