Wen 4021 User Manual

13
TROUBLESHOOTING GUIDE
PROBLEM CAUSE SOLUTION
No power supply Check the power supply.
Defective outlet
Try a different source of power. Change as
necessary.
Damaged Extension cable Check cable and replace if necessary.
Defective fuse Replace the fuse.
Damaged power cable Take saw to a service technician.
Loose external connection Take saw to a service technician.
Loose internal connection Take saw to a service technician.
Defective ON/OFF switch Take saw to a service technician.
No oil in the tank Refill oil.
Ventilation in the oil tank cap
clogged
Clean oil tank cap.
Oil Tank Flow Clogged Unclog oil flow channel.
No oil in the tank Refill oil.
Ventilation in the oil tank cap
clogged
Clean oil tank cap.
Oil tank flow channel clogged Unclog oil flow channel.
Dull chain Resharpen or replace chain.
Chain tension too loose Adjust chain tension.
Dull chain Rehsarpen or replace chain.
Chain worn out Replace chain.
Saw teeth pulling in the wrong
direction
Remount saw chain with teeth in the correct
direction.
Chainsaw jumps
up, vibrates or
does not saw
properly.
Chain/guide rail
hot
Dry saw chain
Pole saw
operates
irregularly
Pole saw does
not operate
properly

Wen 4021 Specifications

General

Brand	Wen
Model	4021
Category	Pole Saw
Language	English