Cause
- Chain is no longer cutting.
Correction
- Chain must be replaced or sharpened.
Cause
- Cutting bar is bent/warped or burnt.
Correction
- Bar must be replaced.
Cause
- Lack of air pressure in the pneumatic tank.
Correction
- Make sure the gauge returns to 0 when purged and reads 4.6–4.8 MPa (68–70 psi) during operation.
Cause
- Flow control valve on the hydraulic circuit of the cylinder is too closed.
Correction
- Adjust the valve by turning the knob: more towards “–” for easier/faster lowering and towards “+” for slower lowering.
Cause
- Relief valve is too tight on the main hydraulic block.
Correction
- Unscrew the adjustment of the holding valve until the cutting bar lowers by itself, then tighten it just enough to stop it.
Cause
- Squareness is incorrect during the cutting bar descent.
Correction
- Adjust the bearings so that the cutting bar descends perpendicular into the wood.
