Instruction manual

AS160 19
11. TROUBLESHOOTING
This fault diagnosis is intended for use by persons familiar with mechanical devices, and provides a basic
capability to maintain the tool. To correct the user serviceable faults, refer to the Maintenance section of this
manual. The more complex repairs as noted below, must be performed by an authorised service centre.
ITEM SYMPTOM CHECK/REMEDY
1 Motor overheating Verify that all cooling vents are not obstructed by operators hand,
debris in vents, or other. Remedy or clean as required.
Verify blades are not rubbing against each other with excessive
force, either at cutting edge or close to blade mounts. Blades
may be worn and overheating. Replace as required.
Check that belt tension is not excessive.
Check that bearings have not failed by removing plastic side cover and
belt and rotating both pulleys independently checking for
roughness. The power pulley should rotate easily and smoothly.
The driven pulley should rotate smoothly but will have a "springy"
feel, wanting to stay in either of 2 positions.
Verify that the motor housing is secure with the tool. If loose, refer
to authorised service centre immediately.
2 Noisy operation or Blades loose -tighten blade mount bolts.
unusual vibration Blade failure - replace blade set.
Leaf spring failure - contact authorised service centre.
Bearing failure - contact authorised service centre.
Gearbox failure - contact authorised service centre.
Handle rubber mounts damaged or worn - replace.
3 One or both conrods/blades Leaf spring failure - contact authorised service centre.
loose, even when mounting
bolts tightened
4 Belt slipping Loose belt - re-tension as necessary.
Worn belt - replace belt.
Worn pulleys - contact authorised service centre.
5 Slow cutting performance Teeth worn, chipped or lost. Sharpen or replace blade.
Belt slipping - see Symptom 4.
Blades r
ubbing against each other with excessive force
- see Symptom 8.
Attempting to cut material which is too hard.