John Deere OMM141979 J9 - Manual (Page 27)

Troubleshooting - 23
TROUBLESHOOTING
Troubleshooting
Using Troubleshooting Chart
If you are experiencing a problem that is not listed in this
chart, see your authorized dealer for service.
When you have checked all the possible causes listed and
you are still experiencing the problem, see your authorized
dealer.
IF CHECK
Tiller is Noisy Tines need to be straightened, tightened or replaced.
Rocks and debris in tilling area.
Erratic Tiller Operation Tines need to be straightened, tightened or replaced.
Drive belts need to be tightened or replaced.
Tiller Will Not Till Drive belt needs to be tightened or replaced.
Replace shaft bolts.
Tractor and Engine Slow Down Throttle not at “FAST” position.
Tilling too deep
Decrease travel speed.
Not Enough Tillage Depth Throttle not at “FAST” position.
Check tine placement or replace tines.
Tine Shaft Rotates But Tiller Does Not Till Clean tines.
Install tines correctly.
Till at shallower depth.
Replace shaft bolts.
Tilled Ground is Uneven Rocks and debris in tilling area.
Keep travel speed the same.
Tilling Results Are Poor Cut tall grass or weeds before you till.
Adjust transmission travel speed - slow down.
Tractor Will Not Pull Tiller Because Wheels Slip
Too Much Cut tall grass or weeds before you till.
Till at shallower depth.
Make more than one pass.
Add rear wheel weights or tire chains on turf tires, or install bar tires.
Tine Shaft Does Not Rotate Remove rock or trash wedged between shaft and housing.
Replace shaft bolts.
Tighten or replace drive belts.
Tiller Hard To Raise Remove dirt, mud, and trash from shaft and tines.
Tiller Bounces When It Is Tilling Or Will Not
Penetrate Secondary drive belt installed incorrectly.
Tiller Pushes Tractor Add rear wheel weights, or tire chains on turf tires, or install bar tires.