Jonsered CS 2171WH manual Tensioning the chain, General advice on setting raker clearance

SAFETY INSTRUCTIONS

General advice on setting raker clearance

•When you sharpen the cutting teeth you reduce the raker clearance (=cutting depth). To maintain optimal cutting performance you must file back the raker lip to the recommended height.

See the Technical data section to find the raker clearance for your particular chain.

•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 that you use our raker gauge to achieve the correct clearance and bevel on the raker lip.

WARNING! The risk of kickback is increased

!if the raker clearance is too large!

Setting the raker clearance

•Before setting the raker clearance the cutting teeth should be newly sharpened. We recommend that you adjust the raker clearance every third time you sharpen the chain.

NOTE! This recommendation assumes that the length of the cutting teeth is not reduced excessively.

•To adjust the raker clearance you will need a flat file and a raker gauge.

•Place the gauge over the raker lip.

•Place the file over the part of the lip that protrudes through the gauge and file off the excess. The clearance is correct when you no longer feel any resistance as you draw the file over the gauge.

Tensioning the chain

WARNING! A slack chain may jump off and

!cause serious or even fatal injury.

The more you use a chain the longer it becomes. It is therefore important to adjust the chain regularly to take up the slack.

Check the chain tension every time you refuel. NOTE! A new chain has a running-in period during which you should check the tension more frequently.

The position of the chain tensioning screw on our chain saws varies from model to model. See the What is what? section to find out where it is on your model.

Tension the chain as tightly as possible, but not so tight that you cannot pull it round freely by hand.

•Undo the bar nuts that hold the clutch cover/chain brake. Use the combination spanner. Then tighten the bar nuts by hand as tight as you can.

•Raise the tip of the bar and stretch the chain by tightening the chain tensioning screw using the combination spanner. Tighten the chain until it does not sag from the underside of the bar.

•Use the combination spanner to tighten the bar nuts while lifting the tip of the bar at the same time. Check that you can pull the chain round freely by hand and that it does not sag from the underside of the bar.

12 – English