Page 3 - READ ALL INSTRUCTIONS; GENERAL SAFETY RULES
3 WARNING: Read and understand all instructions. Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury. READ ALL INSTRUCTIONS Know your tool. Read the operator’s manual carefully. Learn the saw’s applications and limitations as well as t...
Page 4 - KICKBACK
4 WARNING: The warnings, labels, and instructions found in this sec- tion of the operator’s manual are for your safety. Failure to follow all instructions may result in serious personal injury. Do not cut vines and/or small underbrush (a diameter of less than 3 in.). Muffler surfaces are very ho...
Page 5 - SYMBOLS; SYMBOL
5 SYMBOLS Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer. Safety Alert Precautions that involve your safety. Read The Operator’s Manual To reduce the risk of...
Page 6 - SERVICE; SAVE THESE INSTRUCTIONS; CAUTION
6 SERVICE Servicing requires extreme care and knowledge and should be performed only by a qualified service technician. For service we suggest you return the product to your nearest AUTHORIZED SERVICE CENTER for repair. When servicing, use only identical replacement parts. WARNING: SAVE THESE INSTRU...
Page 7 - GLOSSARY OF TERMS
7 BuckingThe process of cross cutting a felled tree or log into lengths. Chain BrakeA device used to stop the saw chain. Chain Saw PowerheadA chain saw without the saw chain and guide bar. ClutchA mechanism for connecting and disconnecting a driven member to and from a rotating source of power. Driv...
Page 8 - PRODUCT SPECIFICATIONS; FEATURES
8 PRODUCT SPECIFICATIONS Bar length ....................................................................................................................................................................... 18 in.Chain pitch .................................................................................
Page 10 - FUEL AND REFUELING; HANDLING THE FUEL SAFELY; Refueling in the; section of; MIXING THE FUEL; GASOLINE; OPERATION
10 FUEL AND REFUELING HANDLING THE FUEL SAFELY WARNING: Check for fuel leaks. If any are found, correct them before using the saw to prevent fire or burn injury. Always handle fuel with care; it is highly flammable. Always refuel outdoors and do not inhale fuel vapors. Do not let gasoline or o...
Page 11 - FILLING THE FUEL TANK; ADDING BAR AND CHAIN OIL; OPERATING THE CHAIN BRAKE
11 FILLING THE FUEL TANK See Figure 2. Clean the surface around the fuel cap to prevent con-tamination. Loosen the fuel cap slowly. Carefully pour the fuel mixture into the tank. Avoid spill-age. Prior to replacing the fuel cap, clean and inspect the o-ring. Immediately replace the fuel ca...
Page 12 - STARTING THE ENGINE; To Start a Cold Engine:
12 STARTING THE ENGINE See Figures 6 - 10. The starting method differs depending on whether the engine is cold or warm. WARNING: Keep your body to the left of the chain line. Never straddle the saw or chain, or lean over past the chain line. Place the chain saw on level ground and ensure that no o...
Page 13 - To Start a Warm Engine:; STOPPING THE ENGINE; FULL
13 CAUTION: Failure to release partial throttle when chain brake lever is in the brake position will result in serious damage to the unit. Never squeeze and hold the throttle trigger while the chain brake is in the brake position. To Start a Warm Engine: Set the ignition switch to the RUN ( I ) po...
Page 14 - ADJUSTING IDLE SPEED; “T” clockwise to increase; “T” counterclockwise to reduce the; PULL AND PUSH; IDLE SPEED
14 ADJUSTING IDLE SPEED See Figure 13. If the engine starts, runs, and accelerates, but will not idle, turn the idle speed screw “T” clockwise to increase idle speed. If the chain turns at idle, turn the idle speed screw “T” counterclockwise to reduce the idle RPM and stop the chain movement. If...
Page 15 - KICKBACK PRECAUTIONS; PREPARING FOR CUTTING; PROPER GRIP ON HANDLES
15 KICKBACK PRECAUTIONS See Figures 15 - 16. Rotational kickback occurs when the moving chain contacts an object at the Kickback Danger Zone of the guide bar. The result is a lightning-fast reverse reaction, which kicks the guide bar up and back towards the operator. This reaction can cause loss of ...
Page 16 - PROPER CUTTING STANCE; WORK AREA PRECAUTIONS; SAFE DISTANCE from the cutting area. During; BASIC OPERATING/CUTTING PROCEDURES
16 STRAIGHT ARM CHAIN LINE THUMB ON UNDERSIDE OF HANDLE BAR Fig. 18 Fig. 19 PROPER CUTTING STANCE See Figure 18. Balance your weight with both feet on solid ground. Keep left arm with elbow locked in a “straight arm” posi-tion to withstand any kickback force. Keep your body to the left of the ...
Page 17 - FELLING TREES; HAZARDOUS CONDITIONS; PROPER PROCEDURE FOR TREE FELLING
17 FELLING TREES HAZARDOUS CONDITIONS WARNING: Do not fell trees during periods of high wind or heavy precipitation. Wait until the hazardous weather has ended. When felling a tree, it is important that you heed the following warnings to prevent possible serious injury.� Do not cut down trees havi...
Page 18 - REMOVING BUTTRESS ROOTS; Proper Procedure For Tree Felling after you have; BUCKING; Kickback in the
18 WEDGE Fig. 23 HORIZONTAL CUT VERTICAL CUT LOOSE SECTION Fig. 24 KICKBACK Fig. 25 On large diameter trees, stop the back cut before it is deep enough for the tree to either fall or settle back on the stump. Then insert soft wooden or plastic wedges into the cut so they do not touch the chain. Dr...
Page 20 - CUTTING SPRINGPOLES; CUT LIMBS ONE AT A TIME AND LEAVE SUPPORT LIMBS
20 UNDERBUCKING See Figure 29. Begin on the underside of the log with the top of the saw against the log; exert light pressure upward. During under-bucking, the saw will tend to push back at you. Be prepared for this reaction and hold the saw firmly to maintain control. LIMBING AND PRUNING See Figur...
Page 21 - STOP “; MAINTENANCE
21 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 operation is dusty, also wear a dust mask...
Page 23 - NOTE: When placing the bar on the bar studs, ensure; ADJUSTING THE CHAIN TENSION
23 Fig. 40 Fig. 41 Fig. 42 Fit the bar flush against the mounting surface so that the bar studs are in the long slot of the bar. NOTE: When placing the bar on the bar studs, ensure that the adjusting pin is in the chain tension pin hole. Replace the clutch cover and bar mounting nuts. Finger-t...
Page 24 - CHAIN MAINTENANCE
24 Fig. 46 RAKER (DEPTH GAUGE) CLEARANCE ≈ . 050 in. (1.25 mm) ≈ .050 (1.25 mm) Fig. 45 Fig. 44 Fig. 47 INSPECT DRIVE SPROCKET Retension the chain whenever the flats on the drive links hang out of the bar groove. NOTE: During normal saw operation, the temperature of the chain increases. The drive ...
Page 25 - SHARPENING THE CUTTERS; Adjusting
25 SHARPENING THE CUTTERS See Figures 48 - 51. Be careful to file all cutters to the specified angles and to the same length, as fast cutting can only be obtained when all cutters are uniform. WARNING: The saw chain is very sharp. Always wear protective gloves when performing maintenance to the chai...
Page 26 - TOP PLATE FILING ANGLE; SIDE PLATE ANGLE
26 INCORRECT MORE THAN 30° TOP PLATE FILING ANGLE LESS THAN 30° Fig. 52 30° CORRECT INCORRECT BACKWARD SLOPE SIDE PLATE FILING ANGLE Fig. 53 80° CORRECT HOOK FLAT FILE DEPTH GAUGE JOINTER Fig. 55 RESTORE ORIGINAL SHAPE BY ROUNDING THE FRONT Fig. 56 TOP PLATE FILING ANGLE See Figure 52. CORRECT 30°...
Page 27 - MAINTAINING THE GUIDE BAR
27 MAINTAINING THE GUIDE BAR See Figure 57. CAUTION: Make sure the chain has stopped before you do any work on the saw. Every week of use, reverse the guide bar on the saw to distribute the wear for maximum bar life. The bar should be cleaned every day of use and checked for wear and damage.Featheri...
Page 28 - CLEANING THE AIR CLEANER
28 CLEANING THE AIR CLEANER See Figures 60 - 61. Activate chain brake. Remove the air cleaner cover by rotating the knob coun-terclockwise. Remove the air cleaner. Tap a corner of the cleaner against a hard surface to dislodge dust from the cleaner surface. Using a flat blade screwdriver, ...
Page 29 - ADJUSTING THE CARBURETOR; Before adjusting the carburetor:; Cleaning the Air Cleaner; “T” clockwise to increase idle; “T” counterclockwise to decrease; CLEANING THE STARTER UNIT
29 ADJUSTING THE CARBURETOR See Figures 62 - 64. Before adjusting the carburetor: Use a brush or compressed air to clean the starter cover vents. Clean the air cleaner. Refer to Cleaning the Air Cleaner in the Maintenance section of this manual. Allow the engine to warm up prior to adjustment ...
Page 30 - CARBURETOR ANTI-FREEZE MECHANISM; WARNING
30 SNOW SNOW SUN SUN CLEAN CYLINDER FINS CARBURETOR ANTI-FREEZE MECHANISM See Figures 65 - 66. The chain saw is designed with a ventilation hatch on the right side of the cylinder cover which allows warm air to be supplied from the engine to the carburetor to help prevent icing under colder operatin...
Page 31 - CHECKING THE FUEL FILTER
31 CLEAN FLYWHEEL FINS Fig. 68 FUEL FILTER Fig. 69 Fig. 70 LOOSEN TIGHTEN MAINTENANCE CHECKING THE FUEL FILTER See Figure 69. Check the fuel filter periodically. Replace it if contaminated or damaged. REPLACING THE SPARK PLUG See Figure 70. This engine uses a Champion RZ7C or NGK CMR7H spark plug wi...
Page 32 - INSPECTING AND CLEANING CHAIN BRAKE; Operating Chain Brake for additional
32 INSPECTING AND CLEANING CHAIN BRAKE See Figures 72 - 73. Remove the clutch cover and clean the chain brake com-ponents. Check wear on the brake band and replace if worn or deformed. The band thickness should not be less than 0.024 in., or worn halfway through. Always keep the chain brake mech...
Page 33 - BAR AND CHAIN COMBINATIONS
33 Problem Possible Cause Solution Engine will not start. [Make sure ignition switch is in the RUN ( l ) position.] No spark. Engine is flooded. Check spark. Remove air filter cover. Remove spark plug from cylinder. Reattach the spark plug wire and lay spark plug on top of cylinder with the metal pa...
Page 34 - Operating the Chain Brake in the; Adjusting the Chain Tension in; Replacing the Guide Bar and Chain in the; TROUBLESHOOTING; CALL US FIRST; For any questions about operating or maintaining your product,
34 Problem Possible Cause Solution Bar and chain running hot and smoking. Chain oil tank empty. Chain tension is too tight. Oiler is not functioning. Clogged oil passages. Oil tank should be filled every time fuel tank is filled. Tension chain per instructions in Adjusting the Chain Tension in the M...
Page 35 - WARRANTY; LIMITED WARRANTY STATEMENT; brand outdoor
35 WARRANTY LIMITED WARRANTY STATEMENT Techtronic Industries North America, Inc., warrants to the original retail purchaser that this RYOBI ® brand outdoor product is free from defect in material and workmanship and agrees to repair or replace, at Techtronic Industries North America, Inc.’s, discret...
Page 36 - TO MODEL NUMBERS REQUIRED TO MEET THE CARB REQUIREMENTS.
36 WARRANTY THE FOLLOWING CALIFORNIA AIR RESOURCES BOARD (CARB) STATEMENT ONLY APPLIES TO MODEL NUMBERS REQUIRED TO MEET THE CARB REQUIREMENTS. TECHTRONIC INDUSTRIES NORTH AMERICA, INC., LIMITED WARRANTY FEDERAL AND CALIFORNIA EMISSION CONTROL SYSTEMS NON-ROAD AND SMALL OFF-ROAD ENGINES The U.S. Env...
Page 38 - OPERATOR’S MANUAL; • SERVICE; • MODEL NUMBER; TECHTRONIC INDUSTRIES NORTH AMERICA, INC.
983000-8674-21-06 (REV:00) OPERATOR’S MANUAL 18 in. 40cc CHAIN SAW RY10532 WARNING: The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.CALIFORNIA PROPOSITION 65 • SERVICE Now that you have purchased your ...
