ST37x Operator’s Manual Service - 87
As Needed
As Needed
Location Task Notes
Power Unit Change air filter
Drain water separator filter
Adjust attachment drive foot control
Adjust idler roller bearings
Check battery
Charge battery
Trencher Check digging chain rollers, sidebars, pins, and
bushings
Check digging chain teeth and bits
Check trencher headshaft sprocket bolts
Replace digging chain