Husqvarna 525P4S Operation Manual - Page 15

Fitting the cutting head ASSEMBLY The chain should be tensioned until it fits snugly on the underside of the bar. • Fit the cutting head on the shaft so that the screw (A) is aligned with the hole in the shaft as shown. • Tighten screw A. • Tighten screw B. B A CAUTION! Make sure that the drive shaft inside the shaft engages with the cut-out in the cutting head. Fitting the bar and chain • The chain is correctly tensioned when there is no slack on the underside of the bar, and it can still be turned easily by hand. Tighten the bar nut with the combination spanner while holding up the tip of the bar. Unscrew the bar nut and remove the protective cover. Fit the bar over the bar bolt. Place the bar in its rearmost position. Place the chain over the drive sprocket and in the groove on the bar. Begin on the top side of the bar. Make sure that the edges of the cutting links are facing forward on the top edge of the bar. Fit the cover and locate the chain adjuster pin (A) in the hole in the bar. Check that the drive links of the chain fit correctly on the drive sprocket (B) and that the chain is in the groove in the bar (C). Tighten the bar nut finger-tight. • When fitting a new chain, the chain tension has to be checked frequently until the chain is run-in. Check the chain tension regularly. A correctly tensioned chain ensures good cutting performance and long life. Adjusting the harness You should always use the harness with the machine to give maximum control over the machine and reduce the risk of fatigue in your arms and back. • Put on the harness. • Hook the machine onto the harness support hook. • Adjust the length of the harness so that the support hook is roughly level with your right hip. Tension the chain by turning the chain tensioning screw clockwise. Use a combination spanner or turn by hand. 525P5S 525P4S English - 15