Poulan PPB40PS Owner Manual - Page 15

MAINTENANCE NOTE: Chain stretches with use, check and tension often. Never tension a warm chain before storing, as chains shrink when cool, this can damage chain, bar and saw. CHAIN TENSION • Stop the motor and remove the battery before setting the chain tension. Turn the bar cover knob counterclockwise to loosen the bar cover but do not remove the bar cover. Turn the chain tensioning screw clockwise to tension chain. Turn the guide bar knob clockwise to tighten. Refer to the Replacing the bar and chain section for additional information. • Chain must be retensioned whenever the flats on the drive links hang out of the bar groove. • During normal operation, the temperature of the chain will increase. The drive links of a correctly tensioned warm chain will hang approximately 1/16 in. (1.3 mm) out of the bar groove. REPLACING THE BAR AND CHAIN • Loosen the bar cover knob by turning counterclockwise and remove the bar cover. • The bar contains a bar stud slot that fits over the bar stud. The bar also contains a chain tensioning pin hole which fits over the chain tensioning pin. • Place the bar onto the bar stud so that the chain tensioning pin fits into the chain tensioning pin hole. • Fit the chain over the sprocket and into the bar groove. The cutters on the top of the bar should face toward the bar tip, in the direction of the chain rotation. Drivecase Cover Chain Bar Flats APPROX 1/16" (1.3 mm) Sprocket Chain Tensioning Pin Hole Bar Cover Chain Tensioning Pin Bar Stud Bar Cover Knob NOTE: A cold chain is correctly tensioned when there is no slack on the underside of the guide bar, the chain is snug, but it can be turned by hand without binding. New chain tends to stretch; check chain tension frequently. CAUTION: Chain tensioned while warm may be too tight upon cooling. Check the "cold tension" before next use. WARNING: To avoid possible serious injury, stop the motor and remove the battery from the pole saw before replacing the bar, chain, or performing any maintenance operation. • Replace the bar and tighten the bar cover knob. Tighten the bar cover knob finger tight only. The bar must be free to move for tension adjustment. • Remove all slack from chain by turning the chain tensioning screw clockwise, ensuring that the chain seats into the bar groove during tensioning. • Lift the tip of the bar up to check for sag. Release the tip of the bar and turn the chain tensioning screw 1/2 turn clockwise. • Repeat this process until sag does not exist. 15