SERVICE AND ADJUSTMENTS
WARNING: Always stop unit and dis- connect spark plug wire (or disconnect pow- erhead from power source) before performing maintenance, service, or adjustments except for carburetor adjustments.
CHAIN SHARPENING
Chain sharpening is a complicated task that requires special tools. We recommended you refer chain sharpening to a professional chain sharpener.
CHAIN REPLACEMENT
WARNING: Wear protective gloves when handling chain. The chain is sharp and can cut you even when it is not moving.
It is normal for a new chain to stretch during the first 15 minutes of operation. You should re- check your chain tension frequently and adjust the chain tension as required. See CHAIN TEN- SION section.
Replace the old chain when it becomes worn or damaged. Use only the
TO REPLACE CHAIN:
1.Move ON/OFF switch to the OFF position and disconnect spark plug (or disconnect powerhead from power source).
2.Remove bar clamp nut.
3.Remove bar clamp.
4.Turn adjusting screw by hand counter- clockwise until adjusting pin just touches the stop.
5.Slide guide bar behind sprocket until guide bar stops against sprocket.
6.Remove the old chain.
7.Carefully remove new chain from pack- age. Hold chain with the drive links as shown.
Cutter
Tip of
Bar
Drivelink
CUTTERS MUST FACE IN
DIRECTION OF ROTATION
Cutters | Depth Gauge |
|
Drive Links
8.Place chain over sprocket, fitting the drive links in the sprocket.
9.Fit bottom of drive links between the teeth in the sprocket in the nose of the guide bar.
10.Fit chain drive links into bar groove.
11.Pull guide bar forward until chain is snug in guide bar groove. Ensure all drive links are in the bar groove.
12.Now, install bar clamp making sure the adjusting pin is positioned in the lower hole in the guide bar.
Lower Hole
Adjusting Pin
Guide Bar
13.Install bar clamp nut and finger tighten only. Do not tighten any further at this point. Proceed to the CHAIN ADJUST- MENT section.
CHAIN ADJUSTMENT
See CHECK CHAIN TENSION in MAINTE- NANCE section.
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