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▪
Slip the chain around the sprocket (B) behind the clutch (C). Make sure the links fit
between the sprocket teeth (Fig. 4b).
▪
Guide the drive links into the groove (D) and around the end of the bar (Fig. 4b).
Note: the saw chain may droop slightly on the lower part of bar. This is
normal.
▪
Pull guide bar forward until chain is snug. Ensure all drive links are in the bar groove.
▪
Install the clutch cover making sure the tang is positioned in the lower hole in the guide
bar. Make sure the chain does not slip off of the bar. Install the bar retaining nut hand tight
and follow tension adjustment instructions in section saw chain tension adjustment.
Note: the guide bar retaining nuts are installed only hand tight at this point
because saw chain adjustment is required. Follow instructions in section
saw chain tension adjustment.
8.3.4
Saw chain tension adjustment
Proper tension of saw chain is extremely important and must be checked before starting, as
well as during any cutting operation.
Taking the time to make needed adjustments to the saw chain will result in improved cutting
performance and prolonged chain life.
Warning: always wear heavy duty gloves when handling saw chain or
making saw chain adjustments.
8.3.5
To adjust saw chain:
▪
Loosen the bar retaining nuts so they are finger tight.
▪
Hold nose of guide bar up and turn adjustment screw (A) clockwise to increase chain
tension. Turning screw counterclockwise will decrease amount of tension on chain. Ensure
the chain fits snugly all the way around the guide bar (Fig. 5).
▪
After making adjustment, and while still holding nose of bar in the uppermost position,
tighten the bar retaining nuts securely. Chain has proper tension when it has a snug fit all
around and can be pulled around by gloved hand.
Note: if chain is difficult to rotate on guide bar or if it binds, too much
tension has been applied. This requires minor adjustment as follows:
▪
Loosen the bar retaining nuts so they are finger tight. Decrease tension by turning the bar
adjustment screw counterclockwise slowly. Move chain back and forth on bar. Continue to
adjust until chain rotates freely, but fits snugly. Increase tension by turning bar adjustment
screw clockwise.
▪
When saw chain has proper tension, hold nose of bar in the uppermost position and
tighten the 2 bar retaining nuts securely.
Caution: a new saw chain stretches, requiring adjustment after as few as 5
cuts. This is normal with a new chain, and the interval between future
adjustments will lengthen quickly.
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