Owner Manual
Page 1
Mix 2.6 oz. CAUTION: Do not use alternate fuels such as shown. Squeeze throttle trigger to oil tank. 8 3 Make sure chain brake is off by pulling back the handguard. STARTING A WARM ENGINE 4+5+7+8 IMPORTANT: • Never let your saw . Quick-Start Guide 1 6 Place right foot in serious injury. Pour into fuel tank. Pull starter rope until engine starts. 9 4 Slowly press primer bulb 10 times. This will require installation of gasoline for a 50:1 mixture. of full synthetic 2-Cycle Oil with soil/dirt during...
Mix 2.6 oz. CAUTION: Do not use alternate fuels such as shown. Squeeze throttle trigger to oil tank. 8 3 Make sure chain brake is off by pulling back the handguard. STARTING A WARM ENGINE 4+5+7+8 IMPORTANT: • Never let your saw . Quick-Start Guide 1 6 Place right foot in serious injury. Pour into fuel tank. Pull starter rope until engine starts. 9 4 Slowly press primer bulb 10 times. This will require installation of gasoline for a 50:1 mixture. of full synthetic 2-Cycle Oil with soil/dirt during...
Owner Manual
Page 2
... symbols/decals on the label. Maintenance, replacement, or repair of rotation. Always use can be used to cause cancer, birth defects or other reproductive harm. 2 Unlock chain brake. Careless or improper use : • eye protection such as nonfogging, vented goggles or face screen • an approved safety helmet • sound barriers (ear plugs or mufflers) to oil ratio. WARNING! Lock chain brake. Primer. This product is stopped...
... symbols/decals on the label. Maintenance, replacement, or repair of rotation. Always use can be used to cause cancer, birth defects or other reproductive harm. 2 Unlock chain brake. Careless or improper use : • eye protection such as nonfogging, vented goggles or face screen • an approved safety helmet • sound barriers (ear plugs or mufflers) to oil ratio. WARNING! Lock chain brake. Primer. This product is stopped...
Owner Manual
Page 3
...9 10 12 11 1. 2. 3. 4. 5. 6. Muffler 8. Clutch Cover 13. Fuel Cap 12. Drive Links 9. Throttle Trigger 11. Chain Adjustment Tool (Bar Tool) 12. Front Hand Guard/Chain Brake Front Handle Starter Rope ON/STOP Switch Choke/Fast Idle Lever Chain 4 2 1 3 7. Primer Bulb 6 7 8 9 10 11 12 13 14 5 1. 2. 3. 4. 5. 6. 7. Direction of the various controls and adjustments. Starter Housing 11. Bar Nuts 14. Chain Catcher 3 KNOW YOUR MACHINE READ THIS INSTRUCTION MANUAL AND SAFETY RULES BEFORE OPERATING YOUR CHAIN SAW. Compare the illustrations with your...
...9 10 12 11 1. 2. 3. 4. 5. 6. Muffler 8. Clutch Cover 13. Fuel Cap 12. Drive Links 9. Throttle Trigger 11. Chain Adjustment Tool (Bar Tool) 12. Front Hand Guard/Chain Brake Front Handle Starter Rope ON/STOP Switch Choke/Fast Idle Lever Chain 4 2 1 3 7. Primer Bulb 6 7 8 9 10 11 12 13 14 5 1. 2. 3. 4. 5. 6. 7. Direction of the various controls and adjustments. Starter Housing 11. Bar Nuts 14. Chain Catcher 3 KNOW YOUR MACHINE READ THIS INSTRUCTION MANUAL AND SAFETY RULES BEFORE OPERATING YOUR CHAIN SAW. Compare the illustrations with your...
Owner Manual
Page 4
... through prolonged use of gasoline powered hand tools could cause blood vessel or nerve damage in advance. 4 Regular users should have any object while starting the engine. Always replace bar, chain, hand guard, or chain brake immediately if it cannot contact spark plug to blood vessel damage in this manual. • Wear protective gear. Special safety precautions must be aggravated by strenuous work is a high-speed wood-cutting tool. snug...
... through prolonged use of gasoline powered hand tools could cause blood vessel or nerve damage in advance. 4 Regular users should have any object while starting the engine. Always replace bar, chain, hand guard, or chain brake immediately if it cannot contact spark plug to blood vessel damage in this manual. • Wear protective gear. Special safety precautions must be aggravated by strenuous work is a high-speed wood-cutting tool. snug...
Owner Manual
Page 5
... speed, there is a lightning fast, reverse reaction which contributes to Carburetor Adjustment. • Never modify your weight evenly balanced on the rear handle when making bucking cuts. The result is greater chance of kickback occurring. • Use wedges made of oil or fuel mixture. • Keep fuel and oil caps, screws, and fasteners securely tightened. • Use only genuine accessories and replacement parts as the bar is mixed...
... speed, there is a lightning fast, reverse reaction which contributes to Carburetor Adjustment. • Never modify your weight evenly balanced on the rear handle when making bucking cuts. The result is greater chance of kickback occurring. • Use wedges made of oil or fuel mixture. • Keep fuel and oil caps, screws, and fasteners securely tightened. • Use only genuine accessories and replacement parts as the bar is mixed...
Owner Manual
Page 6
... unlock chain brake, pull the front hand guard back toward the front handle as far as a pivot when making a cut. 1. NOTE: If clutch cover can cut you should use the saw properly and carefully to the STOP position. 2. NOTE: We do not rely only on the bar tip. ATTACHING THE BUMPER SPIKE (If not already attached) The bumper spike may be easily removed from the chain saw, ensure chain brake...
... unlock chain brake, pull the front hand guard back toward the front handle as far as a pivot when making a cut. 1. NOTE: If clutch cover can cut you should use the saw properly and carefully to the STOP position. 2. NOTE: We do not rely only on the bar tip. ATTACHING THE BUMPER SPIKE (If not already attached) The bumper spike may be easily removed from the chain saw, ensure chain brake...
Owner Manual
Page 8
... position), but the chain still moves freely around guide bar. 7. This will quickly ruin the bar and chain. Lack of guide bar rail. 6. Turn adjustment screw clockwise until sag does not exist. 5. Damaged chain must be mixed at a ratio of guide bar, tighten bar nuts securely with a good quality synthetic 2-cycle air-cooled engine oil designed to check for adequate lubrication. Once oil is thoroughly mixed. CAUTION: Never use waste oil for the oil system to fuel before removing the oil cap...
... position), but the chain still moves freely around guide bar. 7. This will quickly ruin the bar and chain. Lack of guide bar rail. 6. Turn adjustment screw clockwise until sag does not exist. 5. Damaged chain must be mixed at a ratio of guide bar, tighten bar nuts securely with a good quality synthetic 2-cycle air-cooled engine oil designed to check for adequate lubrication. Once oil is thoroughly mixed. CAUTION: Never use waste oil for the oil system to fuel before removing the oil cap...
Owner Manual
Page 9
... excess fuel by pushing the choke lever in the ON position. Starting could require pulling the starter rope handle many times depending on the ground as possible. aa WARNING: Avoid contact with your right foot through the rear handle. Then, squeeze and release the throttle trigger to allow the engine to the TROUBLESHOOTING TABLE or call customer support. NOTE: Do not attempt to idle speed. The chain saw . Lock the brake by...
... excess fuel by pushing the choke lever in the ON position. Starting could require pulling the starter rope handle many times depending on the ground as possible. aa WARNING: Avoid contact with your right foot through the rear handle. Then, squeeze and release the throttle trigger to allow the engine to the TROUBLESHOOTING TABLE or call customer support. NOTE: Do not attempt to idle speed. The chain saw . Lock the brake by...
Owner Manual
Page 10
... electrical wires if you do not put pressure on a chain brake should stop the chain. Look for longer than 0.5 mm (0.020 in a particular direction. If the trunk is rotted, it may break when the chain brake is triggered. Do not cut , damage to the guide bar, chain, or engine can occur to fall toward the front handle as far as rain, snow, or strong winds, etc. CHAIN BRAKE...
... electrical wires if you do not put pressure on a chain brake should stop the chain. Look for longer than 0.5 mm (0.020 in a particular direction. If the trunk is rotted, it may break when the chain brake is triggered. Do not cut , damage to the guide bar, chain, or engine can occur to fall toward the front handle as far as rain, snow, or strong winds, etc. CHAIN BRAKE...
Owner Manual
Page 11
... completely, set the saw aside and pull down , and get away quickly on the opposite side of the saw . Hold saw against the log. Be extremely cautious with top of the felling cut small logs. IMPORTANT POINTS: • Cut only one log at a time. • Cut shattered wood very carefully; You can lose control of the notch. TYPES OF BUCKING CUTS NOTE...
... completely, set the saw aside and pull down , and get away quickly on the opposite side of the saw . Hold saw against the log. Be extremely cautious with top of the felling cut small logs. IMPORTANT POINTS: • Cut only one log at a time. • Cut shattered wood very carefully; You can lose control of the notch. TYPES OF BUCKING CUTS NOTE...
Owner Manual
Page 13
... perform general maintenance. • Inspect and clean spark arresting screen and muffler • Replace spark plug • Replace fuel filter • Replace air filter * Each hour of operation is approximately 2 tanks of the way through the limb. 3. MAINTENANCE aa WARNING: Disconnect the spark plug before performing maintenance except for loose parts Every 5 hours* • Inspect and clean air filter • Inspect and clean chain brake • Inspect and clean guide bar GENERAL RECOMMENDATIONS Every 25 hours* Yearly The warranty on this...
... perform general maintenance. • Inspect and clean spark arresting screen and muffler • Replace spark plug • Replace fuel filter • Replace air filter * Each hour of operation is approximately 2 tanks of the way through the limb. 3. MAINTENANCE aa WARNING: Disconnect the spark plug before performing maintenance except for loose parts Every 5 hours* • Inspect and clean air filter • Inspect and clean chain brake • Inspect and clean guide bar GENERAL RECOMMENDATIONS Every 25 hours* Yearly The warranty on this...
Owner Manual
Page 14
.... 1. Remove air filter. 3. Reinstall air filter and reposition wire clamp. A dull chain makes a sawdust powder and cuts slowly. Replace the spark arresting screen if breaks occur. 14 To maintain guide bar: 1. Tighten knob securely. 4. If replacement is necessary, use , ensure ON/STOP switch is in the STOP position, then clean all sawdust from saw in the repair parts list or on the decal located on the muffler and spark arresting screen, and must be removed to release air filter. Clean the oil...
.... 1. Remove air filter. 3. Reinstall air filter and reposition wire clamp. A dull chain makes a sawdust powder and cuts slowly. Replace the spark arresting screen if breaks occur. 14 To maintain guide bar: 1. Tighten knob securely. 4. If replacement is necessary, use , ensure ON/STOP switch is in the STOP position, then clean all sawdust from saw in the repair parts list or on the decal located on the muffler and spark arresting screen, and must be removed to release air filter. Clean the oil...
Owner Manual
Page 15
... air filter cover. Tighten knob securely. Remove spark plug from the muffler exhaust outlet cover. 5. Tighten knob securely. The idle speed screw is labeled T. • Turn idle screw (T) clockwise to increase engine speed. • Turn idle screw (T) counterclockwise to idle. Remove air filter cover. 3. Remove the cylinder cover. 4. Replace with specified spark plug and tighten securely with a wire brush. Remove air filter cover. 2. Reinstall the spark plug boot. 6. CARBURETOR ADJUSTMENT CLEANING THE SPARK ARRESTING SCREEN aa WARNING: The chain will not idle...
... air filter cover. Tighten knob securely. Remove spark plug from the muffler exhaust outlet cover. 5. Tighten knob securely. The idle speed screw is labeled T. • Turn idle screw (T) clockwise to increase engine speed. • Turn idle screw (T) counterclockwise to idle. Remove air filter cover. 3. Remove the cylinder cover. 4. Replace with specified spark plug and tighten securely with a wire brush. Remove air filter cover. 2. Reinstall the spark plug boot. 6. CARBURETOR ADJUSTMENT CLEANING THE SPARK ARRESTING SCREEN aa WARNING: The chain will not idle...
Owner Manual
Page 16
... fuel line; replace. Check for dirty fuel filter; Contact an authorized service dealer. 1. Contact an authorized service dealer. 1. See "Carburettor Adjustment" in STARTING AND STOPPING Section. 3. Engine will run only a few seconds after starting. Air filter dirty. Chain brake engaged. Chain moves at idle speed. 1. TROUBLE Engine will not start or will not idle properly. 1. Move ignition switch to ON. 2. Clean or replace air filter. 2. Idle speed requires adjustment. 2. REMEDY 1. repair or replace. 1. Clean or replace plug and regap. 3. Spark...
... fuel line; replace. Check for dirty fuel filter; Contact an authorized service dealer. 1. Contact an authorized service dealer. 1. See "Carburettor Adjustment" in STARTING AND STOPPING Section. 3. Engine will run only a few seconds after starting. Air filter dirty. Chain brake engaged. Chain moves at idle speed. 1. TROUBLE Engine will not start or will not idle properly. 1. Move ignition switch to ON. 2. Clean or replace air filter. 2. Idle speed requires adjustment. 2. REMEDY 1. repair or replace. 1. Clean or replace plug and regap. 3. Spark...
Owner Manual
Page 17
..., electric motors or switches, furnaces, etc. • Store chain saw is to the clutch drum. SEASONAL STORAGE Prepare your chain saw with new one season to another. • Replace your chain saw well out of the reach of children. • At the beginning of recommended type and heat range. • Clean air filter. • Check entire unit for loose screws, nuts, and bolts. Run engine at the end of 2-cycle engine oil through the spark plug opening...
..., electric motors or switches, furnaces, etc. • Store chain saw is to the clutch drum. SEASONAL STORAGE Prepare your chain saw with new one season to another. • Replace your chain saw well out of the reach of children. • At the beginning of recommended type and heat range. • Clean air filter. • Check entire unit for loose screws, nuts, and bolts. Run engine at the end of 2-cycle engine oil through the spark plug opening...
Owner Manual
Page 18
... DATA PR5020 (LDAV50MC) Engine Cylinder displacement, cm3 Cylinder bore, mm Stroke, mm Idle speed, rpm Power, kW Ignition system Spark plug Electrode gap, mm Fuel and lubrication system Fuel tank capacity, cm3 Oil pump capacity at max. Reported data for equivalent sound pressure level is calculated as sound power (LWA) in the environment measured as the time-weighted energy total for different sound pressure levels under various working conditions. GUIDE BAR AND SAW CHAIN COMBINATIONS Model PR5020 Bar P/N 578133803...
... DATA PR5020 (LDAV50MC) Engine Cylinder displacement, cm3 Cylinder bore, mm Stroke, mm Idle speed, rpm Power, kW Ignition system Spark plug Electrode gap, mm Fuel and lubrication system Fuel tank capacity, cm3 Oil pump capacity at max. Reported data for equivalent sound pressure level is calculated as sound power (LWA) in the environment measured as the time-weighted energy total for different sound pressure levels under various working conditions. GUIDE BAR AND SAW CHAIN COMBINATIONS Model PR5020 Bar P/N 578133803...
Owner Manual
Page 19
... failure of "repair or replace as a problem exists. MAINTENANCE, REPLACEMENT AND REPAIR OF EMISSION RELATED PARTS: Any HCOP approved replacement part used in the performance of your failure to a HCOP authorized repair center as soon as necessary" shall be provided without charge to maintenance schedule), ignition module, muffler including catalyst (if equipped), fuel tank, line, and cap. EMISSION CONTROL WARRANTY PARTS LIST: Carburetor, air filter (covered up to maintenance schedule), ignition system: spark plug (covered up to other engine components caused by...
... failure of "repair or replace as a problem exists. MAINTENANCE, REPLACEMENT AND REPAIR OF EMISSION RELATED PARTS: Any HCOP approved replacement part used in the performance of your failure to a HCOP authorized repair center as soon as necessary" shall be provided without charge to maintenance schedule), ignition module, muffler including catalyst (if equipped), fuel tank, line, and cap. EMISSION CONTROL WARRANTY PARTS LIST: Carburetor, air filter (covered up to maintenance schedule), ignition system: spark plug (covered up to other engine components caused by...
Parts List
Page 3
... TBD WIRING HARNESS CYLINDER COVER SCREW KIT DECAL TBD PR5020, 967061401, 967061501, 2016-04 Remark QTY KIT KNOB 16.7 black 1 KIT Filter Cover W/Decal 1 1 SCREW 1 SPRING SPRING IGNITION SWITCH 1 LEVER SWITCH 1 KNOB CHOKE 1 SCREW M5.28X1.81X20MM 2 FILTER Pleated 50cc 1 MANIFOLD Air Intake Base 1 NUT 2 VALVE ASSY 50CC AIR 1 CARBURETTOR W47 With Purge 1 THROTTLE Assy 1 PRIMER 1 KIT FUEL LINE 1 SCREW M4X1.41X20MM 2 GASKET KIT 1 17,24,39 BLOCK AIR INTAKE 1 BOLT CARB ADAPTOR 2 SEAL ADAPTOR 1 SCREW SCREW M50.8X30MM 3 KIT Carb Adaptor 1 17,20,24 SPARK PLUG...
... TBD WIRING HARNESS CYLINDER COVER SCREW KIT DECAL TBD PR5020, 967061401, 967061501, 2016-04 Remark QTY KIT KNOB 16.7 black 1 KIT Filter Cover W/Decal 1 1 SCREW 1 SPRING SPRING IGNITION SWITCH 1 LEVER SWITCH 1 KNOB CHOKE 1 SCREW M5.28X1.81X20MM 2 FILTER Pleated 50cc 1 MANIFOLD Air Intake Base 1 NUT 2 VALVE ASSY 50CC AIR 1 CARBURETTOR W47 With Purge 1 THROTTLE Assy 1 PRIMER 1 KIT FUEL LINE 1 SCREW M4X1.41X20MM 2 GASKET KIT 1 17,24,39 BLOCK AIR INTAKE 1 BOLT CARB ADAPTOR 2 SEAL ADAPTOR 1 SCREW SCREW M50.8X30MM 3 KIT Carb Adaptor 1 17,20,24 SPARK PLUG...
Parts List
Page 5
...578 29 72-01 STRAP 23 545178801 TBD PR5020, 967061401, 967061501, 2016-04 Remark QTY KIT FUEL LINE KIT 12 NIPPLE FITTING - W/FILTER 1 ELBOW OIL LINE 1 BLOCK OIL 1 SCREW 2 OIL PUMP ASSEMBLY 1 WORM GEAR 1 DUST SEAL OIL PUMP 1 SCREW M5.28X1.81X20MM 2 STRAP AV 1 SPRING ISOLATOR REAR 1 FUEL LINE 1 FUEL PICKUP ASSEMBLY 1 FUEL CAP ASSEMBLY 1 SCREW M5.28X1.81X20MM 1 ISOLATOR FRONT ASSY 1 OIL CAP ASSEMBLY 1 FELLING DOG KIT SPIKE ASSEMBLY 1 9 SCREW 2 OIL VENT ASSEMBLY 1 SCREW M5.3814X22.225MM 2 CHAIN CATCHER 1 "KIT OIL PUMP, INCL. 1621" 1 16,17,18 ,19,20...
...578 29 72-01 STRAP 23 545178801 TBD PR5020, 967061401, 967061501, 2016-04 Remark QTY KIT FUEL LINE KIT 12 NIPPLE FITTING - W/FILTER 1 ELBOW OIL LINE 1 BLOCK OIL 1 SCREW 2 OIL PUMP ASSEMBLY 1 WORM GEAR 1 DUST SEAL OIL PUMP 1 SCREW M5.28X1.81X20MM 2 STRAP AV 1 SPRING ISOLATOR REAR 1 FUEL LINE 1 FUEL PICKUP ASSEMBLY 1 FUEL CAP ASSEMBLY 1 SCREW M5.28X1.81X20MM 1 ISOLATOR FRONT ASSY 1 OIL CAP ASSEMBLY 1 FELLING DOG KIT SPIKE ASSEMBLY 1 9 SCREW 2 OIL VENT ASSEMBLY 1 SCREW M5.3814X22.225MM 2 CHAIN CATCHER 1 "KIT OIL PUMP, INCL. 1621" 1 16,17,18 ,19,20...
Parts List
Page 7
... 1 NUT BAR 2 BEARING SLEEVE 1 PAWL 50cc Side Adjust 1 SCREW 1 "KIT Bar Adjust (incl 18-20, worm gears, washers)" 1 18,19,20 "BAR 20"" 3/8 72DL PPRO BN" 1 SAW CHAIN 20INCH 72V 72V070PN 1 SCREW 1 SCREW 3 SPRING ISO ASSY CYLINDER 1 SCREW SCREW M5.3814X22.225MM 4 HANDLE FRONT 1 CHASSIS ASSY 1 FLYWHEEL Assembly 50cc Fenglong 1 WASHER FLYWHEEL 1 NUT FLYWHEEL 1 SCREW SHOULDER 1 HUB STARTER 1 SPRING HUB EPS 1 SCREW 1 "KIT EPS Starter, INCL. 33-36" 1 33,34,35 ,36 SPRING HUB EPS 1 BAFFLE 1 HANDLE STARTER 1 ROPE KIT 1 SCREW 4 STARTER HOUSING 1 Bolt...
... 1 NUT BAR 2 BEARING SLEEVE 1 PAWL 50cc Side Adjust 1 SCREW 1 "KIT Bar Adjust (incl 18-20, worm gears, washers)" 1 18,19,20 "BAR 20"" 3/8 72DL PPRO BN" 1 SAW CHAIN 20INCH 72V 72V070PN 1 SCREW 1 SCREW 3 SPRING ISO ASSY CYLINDER 1 SCREW SCREW M5.3814X22.225MM 4 HANDLE FRONT 1 CHASSIS ASSY 1 FLYWHEEL Assembly 50cc Fenglong 1 WASHER FLYWHEEL 1 NUT FLYWHEEL 1 SCREW SHOULDER 1 HUB STARTER 1 SPRING HUB EPS 1 SCREW 1 "KIT EPS Starter, INCL. 33-36" 1 33,34,35 ,36 SPRING HUB EPS 1 BAFFLE 1 HANDLE STARTER 1 ROPE KIT 1 SCREW 4 STARTER HOUSING 1 Bolt...