Owner’s Manual & Safety Instructions Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and the receipt in a safe and dry place for future reference. 280cc Saw Mill Using an engine indoors CAN KILL YOU IN MINUTES.
Table of Contents Safety Safety.......................................................... 3 Specifications.............................................. 6 Assembly..................................................... 6 Operation.................................................... 10 Maintenance............................................... 12 Parts List and Diagrams............................. 14 Warranty.....................................................
Important Safety Information Safety WARNING! Read all instructions. Failure to follow all instructions listed below may result in fire, serious injury and/or DEATH. The warnings and precautions discussed in this manual cannot cover all possible conditions and situations that may occur. It must be understood by the operator that common sense and caution are factors which cannot be built into this product, but must be supplied by the operator. SAVE THESE INSTRUCTIONS Set Up Precautions 2.
8. Do not operate in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Gasoline-powered engines may ignite the dust or fumes. Safety 9. Stay alert, watch what you are doing and use common sense when operating this piece of equipment. Do not use this piece of equipment while tired or under the influence of drugs, alcohol or medication. 10. Do not overreach. Keep proper footing and balance at all times.
a. Turn the engine switch to its “OFF” position. b. Allow the engine to completely cool. c. Then, remove the spark plug wire(s) from the spark plug(s). 2. Keep all safety guards in place and in proper working order. Safety guards include muffler, air cleaner, mechanical guards, and heat shields, among other guards. 3. Do not alter or adjust any part of the equipment or its engine that is sealed by the manufacturer or distributor.
Specifications Type 87+ octane unleaded gasoline Log Diameter 20″ Maximum Board Width 20″ Maximum Capacity 1 Gallon Cutting Thickness 4-1/2″ Maximum Coolant Tank Capacity 4.2 Quarts Cutting Length 9′-2″ Maximum (110″) Blade Speed 3,279 FPM Fuel Safety Note: Engine specifications are found in the engine manual supplied with this equipment.
Round Post (20) Blade Guard (50) 6. Use the Bolts (22) and Nuts (25) to fasten the End Stops (79) to the Track Sections, as shown below. 7. Use the Flange Bolts (77) and Flange Nuts (84) to fasten the Center Support (90a) and Middle Supports (81a) to the Track Sections (78, 92), as shown below. NOTE: The Track (78) and Track (92) must be aligned not only on the top surface, but also on the side surface. The gap between these two parts must be small.
10. Place the Top Frame (23) on the Posts (20, 48). 15. Thread the Cable Anchor Bolts (46) into the Blade Guard (50) as shown below. Safety Figure G: Top Frame 11. Secure the two Bolts (22) attaching the Top Frame (23) to the Round Post (20) as shown below. Figure K: Cable Anchor Bolt Locations Assembly 16. Route Cables as shown below. Hook the loops around the two posts on the back of the External Tube (34). The lower cable attaches to the lower post.
Refer to Figure O for the following instructions: BEFORE any adjustment, loosen Bolts E and F and Nuts C and D. If after replacement Blade starts to shift back towards operator, loosen Nut A and hold Bolt G with a wrench. Then tighten Nut A after adjustment. If the Blade shifts back from the operator, loosen Nut B and hold Bolt G with a wrench. Then tighten Nut B after Blade adjustment. Safety 18. Slide Fixed Block until it gently touches the Blade. Then tighten the Bolt, fastening it in place.
Operating Instructions Safety Read the entire Important Safety Information section at the beginning of this manual including all text under subheadings therein before set up or use of this product. Engine Operation Inspect engine and equipment looking for damaged, loose, and missing parts before set up and starting. If any problems are found, do not use equipment until fixed properly. Start Procedure Assembly Before starting the engine: a.
Scale Pointer 14. WARNING! The operator and any assistants must stay clear of the front and back of the blade whenever the engine is running. 15. Start and operate the engine according to the provided engine manual. Safety 11. Align the Blade with the top of the lumber, loosen the Scale Knob and adjust the Scale Pointer to point at 0″ on the Scale. Tighten the Scale Pointer Knob. 16. Adjust the Throttle to bring the Blade up to speed. The Locking Ring can be turned to lock the Throttle in place.
Servicing Safety To prevent serious injury from accidental starting: Turn the Power Switch of the equipment to its “OFF” position, wait for the engine to cool, and disconnect the spark plug wire(s) before performing any inspection, maintenance, or cleaning procedures. To prevent serious injury from equipment failure: Do not use damaged equipment. If abnormal noise, vibration, or excess smoking occurs, have the problem corrected before further use.
Equipment Troubleshooting Premature blade dulling. 2. Adjust speed or feed rate for the lumber being cut. 3. Lumber loose. 3. Make sure lumber is securely positioned against supports. Remove stray branches that prevent proper positioning. 4. Blade rubs against wheel flange. 4. Adjust blade tracking. 5. Blade teeth too coarse for lumber, or blade too thick. 5. Use recommended blade only. 6. Teeth contacting lumber before blade up to full speed. 6.
Parts List and Diagrams Parts List Safety Part Assembly Operation Maintenance 1 2 3a 4 5 6 7a 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 Page 14 Description Wheel Hex Nut M20 Left Wheel Frame Clamp 1 Hex Nut M12 Hex Bolt M20×100 Right Wheel Frame Hex Bolt M12×80 Hex Nut M12 Clamp 2 Hex Bolt M8×20 Hex Bolt M10×25 Hex Bolt M12×65 Tension Handle Flat Washer 12 Hex Bolt M12×145 Hanging Plate Hex Bolt M8×16 Right Clamp
Safety Assembly Diagram Maintenance Operation Assembly 101 ITEM 61712 For technical questions, please call 1-800-520-0882.
Assembly Diagram (continued) 100 Safety 100 Assembly Operation Maintenance Page 16 For technical questions, please call 1-800-520-0882.
ITEM 61712 For technical questions, please call 1-800-520-0882.
PLEASE READ THE FOLLOWING CAREFULLY Safety The manufacturer and/or distributor has provided the parts list and assembly diagram in this manual as a reference tool only. Neither the manufacturer or distributor makes any representation or warranty of any kind to the buyer that he or she is qualified to make any repairs to the product, or that he or she is qualified to replace any parts of the product.
To take advantage of this warranty, the product or part must be returned to us with transportation charges prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our inspection verifies the defect, we will either repair or replace the product at our election or we may elect to refund the purchase price if we cannot readily and quickly provide you with a replacement.
3491 Mission Oaks Blvd.
Table of Contents Safety Specifications.............................................. 2 Safety ��������������������������������������������������������� 3 Setup........................................................... 6 Operationr���������������������������������������������������� 8 Maintenances���������������������������������������������� 11 Troubleshooting.......................................... 14 Warranty Information.................................. 16 Parts List and Diagram...................
WARNING SYMBOLS AND DEFINITIONS This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. Safety Indicates a hazardous situation which, if not avoided, will result in death or serious injury. Indicates a hazardous situation which, if not avoided, could result in death or serious injury. Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
5. Wear ANSI-approved safety goggles, heavy-duty work gloves, and dust mask/respirator during set up. 6. Use only lubricants and fuel recommended in the Specifications chart of this manual. Operating Precautions Carbon Monoxide Hazard Using an engine indoors CAN KILL YOU IN MINUTES. Engine exhaust contains carbon monoxide. This is a poison you cannot see or smell. 1. Safety NEVER use inside a home or garage, EVEN IF doors and windows are open. 12.
26. Keep hands and feet away from moving parts. Do not reach over or across equipment while operating. 27. Before use, check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the equipment’s operation. If damaged, have the equipment serviced before using. Many accidents are caused by poorly maintained equipment. 28. Use the correct equipment for the application.
Set Up The emission control system for this engine is warranted for standards set by the U.S. Environmental Protection Agency. For warranty information, refer to the last pages of this manual. Safety Read the entire Important Safety Information section at the beginning of this manual including all text under subheadings therein before set up or use of this product. To prevent serious injury: Operate only with proper spark arrestor installed.
High Altitude Operation Above 3000 feet NOTICE Warranty void if necessary adjustments are not made for high altitude use. At high altitudes, the engine’s carburetor, governor (if so equipped), and any other parts that control the fuel-air ratio will need to be adjusted by a qualified mechanic to allow efficient high-altitude use and to prevent damage to the engine and any other devices used with this product. The fuel system on this engine may be influenced by operation at higher altitudes.
Operation Read the entire Important Safety Information section at the beginning of this manual including all text under subheadings therein before set up or use of this product. Safety Pre-Start Checks Setup Inspect engine and equipment looking for damaged, loose, and missing parts before set up and starting. If any problems are found, do not use equipment until fixed properly. CAUTION! Do not run the engine with too little oil. The engine will be permanently damaged.
Manual Start 1. To start a cold engine, move the Choke to the CHOKE position. To restart a warm engine, leave the Choke in the RUN position. Safety 1 Choke RUN 2. Open the Fuel Valve. Setup 2 3. Slide the Throttle or Speed Control Lever to 1/3 away from the SLOW position (the “turtle”). Note: Some tools have a Speed Control Lever located elsewhere on the tool which functions the same as the Throttle. Use the Speed Control Lever in place of the Throttle when the tool is so equipped. O OFF 5.
6. Allow the Engine to run for several seconds. Then, if the Choke Lever is in the CHOKE position, move the Choke Lever very slowly to its RUN position. Safety Note: Moving the Choke Lever too fast could stall the engine. 6 Choke RUN IMPORTANT: Allow the engine to run at no load for five minutes with no load after each start‑up so that the engine can stabilize. 7. Adjust the Throttle as needed. 8. Break-in Period: a. Breaking-in the engine will help to ensure proper equipment and engine operation.
Service To prevent serious injury from accidental starting: Turn the Power Switch of the equipment to its “OFF” position, wait for the engine to cool, and disconnect the spark plug cap before performing any inspection, maintenance, or cleaning procedures. To prevent serious injury from equipment failure: Do not use damaged equipment. If abnormal noise, vibration, or excess smoking occurs, have the problem corrected before further use. Safety WARNING Follow all service instructions in this manual.
Maintenance Procedures Safety Many maintenance procedures, including any not detailed in this manual, will need to be performed by a qualified technician for safety. If you have any doubts about your ability to safely service the equipment or engine, have a qualified technician service the equipment instead. Checking and Filling Fuel WARNING! To prevent serious injury from fire: Fill the fuel tank in a well-ventilated area away from ignition sources.
4. When installing a new spark plug, adjust the plug’s gap to the specification on the Specifications chart. Do not pry against the electrode, the spark plug can be damaged. 2. Using a spark plug wrench, remove the spark plug. 3. Inspect the spark plug: If the electrode is oily, clean it using a clean, dry rag. If the electrode has deposits on it, polish it using emery paper. If the white insulator is cracked or chipped, the spark plug needs to be replaced. NOTICE: Tighten the spark plug properly.
Troubleshooting Possible Causes Probable Solutions Engine will not start Fuel Related: 1. No fuel in tank or fuel valve closed. 2. Choke not in CHOKE position, cold engine. 3. Gasoline with more than 10% ethanol used. (E15, E20, E85, etc.) 9. Clogged Fuel Filter. Fuel Related: 1. Fill fuel tank and open fuel valve. 2. Move Choke to CHOKE position. 3. Clean out ethanol rich gasoline from fuel system. Replace components damaged by ethanol. Use fresh 87+ octane unleaded gasoline only.
5. Incorrect compression. Engine stops suddenly 1. Low oil shutdown. 2. Fuel tank empty or full of impure or low quality gasoline. 3. Defective fuel tank cap creating vacuum, preventing proper fuel flow. 4. Faulty magneto. 5. Disconnected or improperly connected spark plug cap. 1. Check wire connections. 2. Re-gap or replace spark plug. 3. Replace spark plug cap. 4. Use fresh 87+ octane unleaded gasoline only. Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.). 5.
Warranty Information Limited 90 Day Warranty Safety Setup Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase.
Emission Control System Warranty Where a warrantable condition exists, HFT will repair your engine at no cost to you including diagnosis, parts and labor. Manufacturer’s Warranty Coverage The 2013 and later engines are warranted for two (2) years. If any emission-related part on your engine is defective, the part will be repaired or replaced by HFT.
Parts List and Diagram Parts List Safety Part Setup Operation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Description Gasket, Cylinder Head Cover Asm., Head Gasket, Head Cover Tube, Breather Bolt Asm., Head Cover Stud Stud Pin Bolt, Cylinder Head Plug, Spark Head Asm., Cylinder Crankcase Asm. Seal, Oil Sensor, Engine Oil Frame, Fuel Tank Inst.
Safety Maintenance Operation Setup Assembly Diagram 280cc Engine For technical questions, please call 1-800-520-0882.
Mounting Hole Diagram Note: Not to scale. 7.7 in. / 195.5mm 4.13 in. / 105mm 3.76 in. / 95.5mm 3.25 in. / 82.5mm Power Take-Off Diagram Note: Not to scale. 3/8-16 UNC 5/16-24 UNF Ø3.48 in. / 88.5mm Ø6.5 in. / 165.1mm .45 Ø4 in. Ø2.2 in. / 56mm Ø1 in. / 25.4mm 0.25 in. / 6.3mm m 3m / 11 45º Ø1.1 in. / 28mm 45º Ø1.375 in. / 35mm Ø2.84 in. / 72.2mm 3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 520-0882 www.harborfreight.com 0.36 in. / 9.13mm Ø5.43 in.
