Ryobi RY40540 Operation Manual - Page 16

MAINTENANCE WARNING: When servicing, use only identical replacement parts. Use of any other parts could create a hazard or cause product damage. FLATS WARNING: Always wear eye protection with side shields marked to comply with ANSI Z87.1, along with head protection. Failure to do so could result in objects being thrown into your eyes and other possible serious injuries. Fig. 12 WARNING: Before inspecting, cleaning, or servicing the unit, stop the motor, wait for all moving parts to stop, and remove the battery pack. Failure to follow these instructions can result in serious personal injury or property damage. APPROX .050 in. CHAIN TENSION See Figures 12 - 13. Fig. 13 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 could result in serious personal injury. All pole saw service, other than the items listed in these 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). 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. n Stop the motor and remove the battery pack before setting the chain tension. Make sure the chain cover screw is loose to finger tight, 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. n Chain must be re-tensioned whenever the flats on the drive links hang out of the bar groove as shown in fig. 12. n During normal operation, the temperature of the chain will increase. The drive links of a correctly tensioned warm chain will hang approximately .050 in. out of the bar groove, as shown in fig. 13. Page 16 - English