Check fluid levels; inspect the radiator core for leaf/dust debris blockages. Clean with compressed air if necessary.
Flip or replace knives. Use a calibrated manual torque wrench to tighten knife bolts in a multi-stage pattern to the exact factory torque specification (typically between 120–150 ft-lbs; verify exact numbers stamped on your specific unit’s serial plate). Anvil Adjustment woodchuck hyroller 1200 service manual