Maintenance - Yardworks 54-5701-4 Owner's Manual

MAINTENANCE

WARNING:
When servicing, use only identical replacement parts. Use of any other parts may create a hazard or cause product damage.
WARNING:
Always wear safety goggles or safety glasses with side shields during power tool operation or when blowing dust. If opera-
tion is dusty, also wear a dust mask.
WARNING:
Before inspecting, cleaning or servicing the unit, stop the motor, wait for all moving parts to stop, and disconnect from power
supply. Failure to follow these instructions can result in serious personal injury or property damage.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial
solvents and may be damaged by their use. Use clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-based products, penetrating oils, etc., come in contact with plastic
parts. Chemicals can damage, weaken, or destroy plastic, which may result in serious personal injury.
All pole saw service, other than the items listed in the instruction manual maintenance instructions, should be performed by
competent pole saw service personnel. (For example, if improper tool is used to hold the flywheel in order to remove the
clutch, structural damage to the flywheel could occur and subsequently could cause the flywheel to burst).
CHAIN TENSION
(See Figures 14 - 15.)
WARNING:
To avoid possible serious injury, never touch or adjust the chain while the motor is running. The saw chain is very sharp;
always wear protective gloves when performing maintenance to the chain.
Stop the motor and disconnect from power supply before setting the chain tension. Make sure the guide bar nut is

loose enough to finger tighten, turn the chain tensioning screw clockwise to tension the chain. Refer to Replacing
the Bar and chain for additional information.
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.
Chain must be retensioned whenever the flats on the drive links hang out of the bar groove as shown in Fig. 14.

During normal operation, the temperature of the chain will increase. The drive links of a correctly tensioned warm chain

will hang approximately 1/16" (1.3 mm) out of the bar groove, as shown in Fig. 15.
NOTE: New chain tends to stretch; check chain tension frequently and tension as required.
CAUTION:
Chain tensioned while warm, may be too tight upon cooling. Check the "cold tension" before next use.
FLATS
Fig. 14
APPROX 1/16" (1.3 mm)
19
Fig. 15