Ryobi RY3714 User Manual - Page 14
Power Head Idle Speed Adjustment, Gas Power Heads Only, Warning, Chain Tension, Chain Oiler, Chain
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MAINTENANCE POWER HEAD IDLE SPEED ADJUSTMENT (GAS POWER HEADS ONLY) If the chain turns at idle, the idle speed screw needs adjusting on your gas power head engine. Turn the idle speed screw counterclockwise to reduce the idle RPM and stop the chain movement. Refer to your power head Operator's Manual for more details. If the chain still moves at idle speed, contact a service dealer for adjustment and discontinue use until the repair is made. WARNING: The chain should never turn at idle when using a gas power head. Turn the idle speed screw "T" counterclockwise to reduce the idle RPM and stop the chain, or contact a service dealer for adjustment and discontinue use until the repair is made. Serious personal injury could result from the chain turning at idle. CHAIN OILER See Figure 18. Use Premium Bar and Chain Lubricant. It is designed for chains and chain oilers and is formulated to perform over a wide temperature range with no dilution required. Remove the cap and carefully pour approximately 8 oz. of the bar and chain lubricant into the chain oiler tank. Replace the cap and tighten securely. Check and refill the chain oiler tank every hour when using an electric power head or every time the engine is fueled when using a gas power head. NOTE: Do not use dirty, used, or otherwise contaminated lubricants. Damage may occur to the oil pump, bar, or chain. CHAIN MAINTENANCE See Figure 19. CHAIN TENSION See Figures 16 - 17. Stop the engine or motor and remove the spark plug wire or disconnect from power supply before setting the chain tension. Make sure the guide bar nut 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. A cold chain is correctly tensioned when there is no slack on the underside of the guide bar and the chain is snug, but can be turned by hand without binding. The chain must be re-tensioned 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 .050 in. (1.25 mm) out of the bar groove. NOTE: New chains tend to stretch; check chain tension frequently and tension as required. NOTICE: A chain tensioned while warm may be too tight upon cooling. Check the "cold tension" before next use. WARNING: The chain is very sharp; always wear protective gloves when performing maintenance to the chain. Use only the replacement low kickback chain specified for this unit. For smooth and fast cutting, the chain needs to be maintained properly. The chain requires sharpening when the wood chips are small and powdery, the chain must be forced through the wood during cutting, or the chain cuts to one side. During maintenance of the chain, consider the following: Improper filing angle of the side plate can increase the risk of a severe kickback.