TROUBLE SHOOTING

Troubleshooting schedule

WARNING! If service operations or trouble

!shooting does not require the machine to be on, the engine should be switched off, and the stop switch in STOP position.

Problem

Probable cause

 

 

The blade does not rotate.

Roller knobs not tightened fully.

 

 

 

The blade not fitted on guide rollers correctly.

 

 

 

Rollers tensioned too much.

 

 

The blade rotates too slowly.

Roller knobs not tightened fully.

 

 

 

Worn drive wheel.

 

 

 

The V-shaped inner diameter of the blade is worn.

 

 

 

The springs on the guide rollers are weakened.

 

 

 

Defective roller bearings.

 

 

The blade jumps out of its position.

Roller setting too loose.

 

 

 

Worn guide rollers.

 

 

 

The blade not fitted on guide rollers correctly.

 

 

 

Damaged blade.

 

 

The blade warps.

Rollers tensioned too much.

 

 

 

Blade overheating.

 

 

Segments break.

Bent, twisted or badly maintained blade.

 

 

 

Continue to use the blade only if one segment is missing or leave for

 

reconstruction when the blade is worn max 50 %.

 

 

The blade cuts too slowly.

Wrong blade for the material in question.

 

 

The blade slips.

The guide rollers does not move in and out freely. A seized roller can not press

the blade hard enough against the drive wheel.

 

 

 

 

Worn drive wheel. Abrasive material and too little water when cutting

 

increases the wear on the wheel.

 

 

 

Worn guide roller flange.When more than half of the width of the flange is worn

 

the blade slips.

 

 

 

The blade’s groove and inner edge are worn. Caused by inferior flushing of

 

abrasive material and/or a worn drive wheel causing the blade to slip.

 

 

English – 27

Page 27
Image 27
Husqvarna K970 manual Trouble Shooting, Troubleshooting schedule