POWEG2030 EN
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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.
8.3.3 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.
▪ Hold nose of guide bar up and turn adjustment screw (17) 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 (17) 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.
▪ Check the chain tension using one hand to lift the saw chain (1) against the weight of the
product. The correct chain tension is achieved when the saw chain can be lifted by
approximately 2-4 mm from the guide bar (2) in the centre. (Fig. 6)
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.
Caution: if saw chain is too loose or too tight, the sprocket, bar, chain, and
crankshaft bearings will wear more rapidly. Study fig. 7 for information
concerning correct cold tension (A), correct warm tension (B), and as a
guide for when saw chain needs adjustment (C).
