Husqvarna 250PS manual General advice on setting raker clearance, Sharpening cutting tooth

SAFETY INSTRUCTIONS

It is very difficult to sharpen a chain correctly without the right equipment. We recom- mend you to use a file gauge. This will help you obtain the maximum kickback reduction and cutting performance from your chain.

!The following faults will increase the risk of kickback considerably.

• FILE ANGLE TOO LARGE

• CUTTING ANGLE TOO SMALL

• FILE DIAMETER TOO SMALL

C. General advice on setting raker clearance

•When you sharpen the

cutting teeth you reduce the RAKER CLEARANCE (cutting depth). To maintain cutting performance you must file back the raker teeth to the recommended height.

•On a low-kickback cutting link the front edge of the raker lip is rounded. It is very important that you maintain this radius or bevel when you adjust the raker clearance.

•We recommend the use of a raker gauge to

B.Sharpening cutting tooth

To sharpen cutting teeth you will need a ROUND FILE and a FILE GAUGE.

1.Check that the chain is correctly tensioned. A slack chain is difficult to sharpen correctly.

2.Always file cutting teeth from the inside face, reducing the pressure on the return stroke.

File all the teeth on one side first, then turn the saw over and file the teeth on the other side.

3.File all the teeth to the same length. When the length of the cutting teeth is reduced to 4 mm (.16") the chain is worn out and should be replaced.

min 4 mm

(0,16")

achieve the correct clearance and bevel on the raker lip.

!WARNING!

The risk of kickback is increased if the raker clearance is too large!

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