maintenance
nMake sure the chain brake is not set by pulling the chain brake lever/hand guard towards the front handle to the run position.
NOTE: When replacing the guide bar and chain, always use the specified bar and chain listed in the Bar and Chain Combinations section later in this manual.
nWear gloves when handling the chain and bar. These components are sharp and may contain burrs.
nPress in on the clutch cover lock knob and rotate counterclockwise until the clutch cover can be removed.
nRemove the bar and chain from the mounting surface.
nRemove the old chain from the bar.
nLay out the new saw chain in a loop and straighten any kinks. The cutters should face in the direction of chain rotation. If they face backwards, turn the loop over.
nPlace the chain drive links into the bar groove as shown.
nPosition the chain so there is a loop at the back of the bar.
nHold the chain in position on the bar and place the loop around the sprocket.
nFit the bar flush against the mounting surface so that the bar studs are in the long slot of the bar.
nReplace the clutch cover ensuring that the adjusting pin in the clutch cover is in the bar chain tensioning pin hole and that both bar studs are securely in their respective holes in the clutch cover.
NOTE: The adjusting pin may need to be slightly repositioned with the chain tensioning dial so that it is aligned with the position of the bar chain tensioning pin hole.
nReplace the clutch cover and rotate clutch cover lock knob just enough to hold the cover in position.
NOTE: The bar must be free to move for chain tension adjustment.
cutters chain rotation
chain drive links
Fig. 37
bar
groove
chain drive links
Fig. 38
nLift the tip of the guide bar up to check for sag.
nRemove all slack from the chain by rotating the chain tensioning dial clockwise until the chain seats snugly against the bar with the drive links in the bar groove.
nRelease the tip of the guide bar and, if the chain sags, turn the chain tensioning dial clockwise. Repeat this process until sag does not exist.
nHold the tip of the guide bar up and tighten the clutch cover lock knob securely.
Page 26 — English
