Harbor Freight Tools Saw Mill with 280cc Gas Engine Product manual

Page 1

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.

Engine exhaust contains carbon monoxide. This is a poison you cannot see or smell.

NEVER use inside a home or garage, EVEN IF doors and windows are open.

When unpacking, make sure that the product is intact and undamaged.

If any engine parts are missing or broken,

please call 1-800-520-0882 (engine parts) or

1-800-444-3353 (other parts) as soon as possible.

No portion of this manual or any artwork contained herein may be reproduced in

any shape or form without the express written consent of Harbor Freight Tools.

Diagrams within this manual may not be drawn proportionally. Due to continuing

improvements, actual product may differ slightly from the product described herein.

Tools required for assembly and service may not be included.

Only use OUTSIDE and far away from windows, doors, and vents.

Visit our website at: http://www.harborfreight.com

Email our technical support at: tech@harborfreight.com

or engine technical support at: predator@harborfreight.com

ITEM 61712

Read this material before using this product. Failure to do so can result in serious injury. SAVE THIS MANUAL.

Page 2

Table of Contents

Safety ......................................................... 3

Specications ............................................. 6

Assembly .................................................... 6

SAFETY OPERATION MAINTENANCEASSEMBLY

Operation ................................................... 10

This is the safety alert symbol. It is used to alert you to potential personal injury hazards.

Maintenance .............................................. 12

Parts List and Diagrams ............................ 14

Warranty .................................................... 19

WARNING SYMBOLS AND DEFINITIONS

Obey all safety messages that follow this symbol to avoid possible injury or death.

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.

Addresses practices not related to personal injury.

Page 2 For technical questions, please call 1-800-520-0882. ITEM 61712

Page 3

IMPORTANT SAFETY INFORMATION

WARNING! Read all instructions.

Failure to follow all instructions listed below may result in re, 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

SAFETYOPERATIONMAINTENANCE ASSEMBLY

1. Gasoline fuel and fumes are ammable, and potentially explosive. Use proper fuel storage and handling procedures. Do not store fuel

or other ammable materials nearby.

2. Have multiple ABC class re extinguishers nearby.

3. Operation of this equipment may create sparks that can start res around dry vegetation. A spark arrestor may be required.

The operator should contact local re

Engine Precautions

Follow engine precautions and instructions in the included engine instruction manual.

Operating Precautions

1. 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.

agencies for laws or regulations relating

to re prevention requirements.

4. Set up and use only on a at, level, well-ventilated surface.

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 engine manual or in the

Specications chart of this manual.

2. Keep children away from the equipment, especially while it is operating.

3. Do not leave the equipment unattended when it is running. Turn off the equipment (and remove safety keys, if available) before leaving the work area.

NEVER use inside a home or garage, EVEN IF doors and windows are open.

Only use OUTSIDE and far away from windows, doors, and vents.

4. Wear ANSI-approved safety glasses, hearing protection, and NIOSH-approved dust mask/ respirator under a full face shield during use.

5. Wear heavy-duty work gloves when handling the blade.

6. People with pacemakers should consult their physician(s) before use. Electromagnetic

elds in close proximity to a heart pacemaker

could cause pacemaker interference or pacemaker failure. Caution is necessary when near the engine's magneto or recoil starter.

7. Use only accessories that are recommended by Harbor Freight Tools for your model. Accessories that may be suitable for one piece of equipment may become hazardous when used on another piece of equipment.

Page 3For technical questions, please call 1-800-520-0882.ITEM 61712

Page 4

8. Do not operate in explosive atmospheres,

such as in the presence of ammable

liquids, gases, or dust. Gasoline-powered engines may ignite the dust or fumes.

9. Stay alert, watch what you are doing and

SAFETY OPERATION MAINTENANCEASSEMBLY

use common sense when operating this piece of equipment. Do not use this piece of

equipment while tired or under the inuence

of drugs, alcohol or medication.

10. Do not overreach. Keep proper footing and balance at all times. This enables better control of the equipment in unexpected situations.

11. Dress properly. Do not wear loose clothing or jewelry. Keep hair, clothing and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.

18. WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities, contains chemicals known [to the State of California] to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

• Lead from lead-based paints

• Crystalline silica from bricks and cement or

other masonry products

• Arsenic and chromium from

chemically treated lumber Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are

specially designed to lter out microscopic particles.

(California Health & Safety Code § 25249.5, et seq.)

12. Parts, especially exhaust system components, get very hot during use. Stay clear of hot parts.

13. Do not cover the engine or equipment during operation.

14. Keep the equipment, engine, and surrounding area clean at all times.

15. Use the equipment, accessories, etc., in accordance with these instructions and in the manner intended for the particular type of equipment, taking into account the working conditions and the work to be performed. Use of the equipment for operations different from those intended could result in a hazardous situation.

16. Do not operate the equipment with known leaks in the engine's fuel system.

17. WARNING: The brass components of this product contain lead, a chemical known to the State of California to cause birth defects (or other reproductive harm). (California Health & Safety code § 25249.5, et seq.)

19. This product contains or, when used, produces a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. (California Health & Safety Code § 25249.5, et seq.)

20. When spills of fuel or oil occur, they must be

cleaned up immediately. Dispose of uids and

cleaning materials as per any local, state, or federal codes and regulations. Store oil rags in a bottom-ventilated, covered, metal container.

21. Keep hands and feet away from moving parts. Do not reach over or across equipment while operating.

22. 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.

23. Use the correct equipment for the application. Do not modify the equipment and do not use the equipment for a purpose for which it is not intended.

Page 4 For technical questions, please call 1-800-520-0882. ITEM 61712

Page 5

Service Precautions

1. Before service, maintenance, or cleaning:

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

mufer, 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. Only a qualied

service technician may adjust parts that may increase or decrease governed engine speed.

4. Wear ANSI-approved safety goggles, heavy-duty work gloves, and dust mask/respirator during service.

5. Maintain labels and nameplates on the equipment. These carry important information. If unreadable or missing, contact Harbor Freight Tools for a replacement.

6. Have the equipment serviced by a qualied repair person using only identical replacement parts. This will ensure that the safety of the equipment is maintained. Do not attempt any service or maintenance procedures not explained in this manual or any procedures that you are uncertain about your ability to perform safely or correctly.

7. Store equipment out of the reach of children.

8. Follow scheduled engine and equipment maintenance.

9. Refueling:

a. Do not smoke, or allow sparks, ames,

or other sources of ignition around the equipment, especially when refuelling.

b. Do not rell the fuel tank while the

engine is running or hot.

c. Do not ll fuel tank to the top. Leave a little

room for the fuel to expand as needed.

d. Refuel in a well-ventilated area only.

SAFETYOPERATIONMAINTENANCE ASSEMBLY

SAVE THESE INSTRUCTIONS.

Page 5For technical questions, please call 1-800-520-0882.ITEM 61712

Page 6

Specications

Log Diameter 20″ Maximum

Board Width 20″ Maximum

Cutting Thickness 4-1/2″ Maximum

Cutting Length 9′-2″ Maximum (110″)

Note: Engine specications are found in the

engine manual supplied with this equipment.

SAFETY OPERATION MAINTENANCEASSEMBLY

Fuel

Type

Capacity 1 Gallon

Coolant Tank Capacity 4.2 Quarts

Blade Speed 3,279 FPM

87+ octane unleaded gasoline

Assembly

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. Operation of this equipment may create sparks that can

start res around dry vegetation. A spark arrestor may be required. The operator should contact local re agencies for laws or regulations relating to re prevention requirements.

TO PREVENT SERIOUS INJURY: The Saw Mill is dangerous when assembled incorrectly.

If you do not feel completely comfortable assembling it, then have a qualied technician assemble it.

Note: For additional information regarding the parts listed, refer to Assembly Diagram near the end of this manual.

1. Secure Wheels (1) onto Right Wheel Frame (7a) with two Hex Bolts M20x100 (6) and Hex Nuts M20 (2). Attach Right Wheel Frame, Round Post (20) and the Round Clamp (10) with two Hex Bolts M12x80 (8) and Hex Nuts M12 (9).

Note: Do not tighten Bolts (8) and Nuts (9).

8, 9

6, 2

Figure A: Right Wheel Frame

with two Hex Bolts (58) and Hex Nuts (5).

Note: Do not tighten Bolts (58) and Nuts (5).

58, 5

48 4

6, 2

Figure B: Left Wheel Frame

3. Slide the Round Post (20) into the Blade Guard (50), as shown below. Adjust the bolts until Blade Guard

2. Secure Wheels (1) onto Left Wheel Frame (3a) with two Hex Bolts M20x100 (6) and Hex Nuts M20 (2). Then attach Left Wheel Frame, Square Post (48) and Square Clamp (4)

Page 6 For technical questions, please call 1-800-520-0882. ITEM 61712

Page 7

can move smoothly on the round post. Then secure it in place with the Right Lock Handle (59).

6. Use the Bolts (22) and Nuts (25) to fasten the End Stops (79) to the Track Sections, as shown below.

Round Post (20)

Blade

Guard

(50)

Right

Lock

Handle

(59)

Figure C: Right Lock Handle

4. Slide the Square Post (48) into the Blade Guard, as shown below. Adjust the bolts until it can move smoothly on the square post. Then secure it in place with the Left Lock Handle (54).

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. If the top surface of the Tracks are not aligned, use

a grinder or le (not included) to smooth them out.

8. Install the Rocker Tube (88) and Round Tube (85) assembly as shown below.

86a

SAFETYOPERATIONMAINTENANCE ASSEMBLY

Left Lock

Handle (54)

Square

Blade

Guard (50)

Post

(48)

Figure D: Left Lock Handle

NOTE: After assembly, the central distance

5. Lay out the Track sections (78, 92) as shown below. of the Track must be 30.315″ + 0.04″

90a

81a

Figure F: Rocker Tube

9. Place the carriage onto the track.

Saw mill

starts cut from

this end.

80a

Saw mill

nishes cut

at this end.

Figure E: Track Assembly

Page 7For technical questions, please call 1-800-520-0882.ITEM 61712

Page 8

10. Place the Top Frame (23) on the Posts (20, 48).

SAFETY OPERATION MAINTENANCEASSEMBLY

Figure G: Top Frame

11. Secure the two Bolts (22) attaching

the Top Frame (23) to the Round Post (20) as shown below.

15. Thread the Cable Anchor Bolts (46) into the Blade Guard (50) as shown below.

Figure K: Cable Anchor Bolt Locations

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. Adjust the Cable Anchor Bolts (46) until the two cables are equal.

Figure H: Top Frame Bolts

12. Attach the Top Frame (23) to the Square Post (48) using the Bolts (49) and Top Frame Brace (101) as shown below.

Figure I: Top Frame Bolts 2

13. Tighten the Bolts (8,58) and Nuts (5,9).

14. Attach the External Tube (34) and the Water Tank Tray (45) to the Top Frame (23) using the Bolts (44), Spring Washer (98), and Nut (99), as shown below.

Figure L: Cable Route

17. Loosen the Bolt (70) and the Fixed Block (71) to move the Fixed Block away from the Blade. Rotate the Tension Handle (14) in a clockwise direction to properly tension the Blade, as shown below.

Figure M: Tension Handle

NOTE: Pull up on Blade at Center Guard.

Allow for no more than 1/4″ - 1/2″

movement up or down (“give”) on the Blade.

The 1/4″ - 1/2″ give indicates proper Blade tension.

Page 8 For technical questions, please call 1-800-520-0882. ITEM 61712

Figure J: Water Tank Tray and External Tube

Page 9

18. Slide Fixed Block until it gently touches the Blade. Then tighten the Bolt, fastening it in place. See below. Repeat for the remaining Fixed

Blocks until there is 0.02″-0.04″ clearance

between Fixed Blocks and Blade.

Fixed Block (71) Bolt (70)

Figure N: Fixed Block and Manual Rotation

19. Rotate the Bandwheel (66) slowly counterclockwise, watching relative position of the Blade (69) and the Bandwheels (66).

20. If the Blade stays centered on the wheels, tighten the lock nuts shown on Figure O. If the Blade does not stay centered, adjust the bolts shown on Figure O slightly and then rotate the belt wheel again. See instructions that follow.

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.

Continue making small adjustments until Blade stays centered, AFTER any adjustment, tighten Bolts E and F and Nuts C and D.

21. Install Throttle Control (93) on Pushing Handle (94) as shown below.

Figure P: Throttle Control

22. Lubricate the Round Post (20) and the Square Post (48) with lithium grease to allow the sawhead to move smoothly.

23. Install the Water Tank (95) into the Water Tank Tray (45).

SAFETYOPERATIONMAINTENANCE ASSEMBLY

adjusting boltadjusting lock nut

Figure O: Adjustment Bolts

NOTE: Adjust Blade again after replacement.

24. Route the Water Tube (97) through the bracket on the lower right of the Blade Guard (50) Secure in place with the tip facing the blade using the water tube holding bolt shown below, but do not overtighten.

Blade

Guard

Water

Tube (97)

(50)

lower

right

bracket

Water Tube

Holding

Bolt

Figure Q: Water Tube

25. For horizontal Blade adjustment, loosen the Nut (47) and adjust the left and right Lock Handles (54,59) until the distance between the ends of the Blade and the top of the Middle Support (81a) are the same.

NOTE: Use a tape measure to verify distances match.

Page 9For technical questions, please call 1-800-520-0882.ITEM 61712

Page 10

Operating Instructions

Read the ENTIRE IMPORTANT

SAFETY INFORMATION section at the

SAFETY OPERATION MAINTENANCEASSEMBLY

beginning of this manual including

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 xed properly.

Start Procedure

Before starting the engine:

a. Follow the Set Up Instructions to

prepare the equipment. Follow all

Equipment Operation

1. Wear heavy-duty work gloves, ANSI-approved goggles behind a full face shield, steel-toed work boots, and a dust mask.

2. Operate only with assistance.

3. Fill the Water Tank with clean water.

4. The maximum log diameter that can be cut is 20″.

The maximum board width that can be cut is 20″. The lumber must be at least 3′ 8″ long and

must rest on at least two Supports (81a, 90a) to prevent instability.

5. Cut branches off the lumber to be processed before milling.

all text under subheadings therein before set up or use of this product.

instructions in the separate engine manual provided with the engine.

b. Inspect the equipment and engine. c. Fill the engine with the proper

amount and type of fuel and oil.

d. Read the Equipment Operation

section that follows.

1. Start and operate the engine according to the provided engine manual.

2. Replacement engine operating instructions can be obtained from the engine manufacturer.

7. Choose the Short Log Supports (91) or the Long Log Supports (82) according to the lumber diameter.

8. Place the lumber to be cut on the Supports. See picture below. Brace the lumber against the Log Supports (82, 91) to prevent movement during milling. The lumber should be positioned so that the force of cutting holds it against the supports.

Clamp

Lumber

Here

Lumber on

Supports

6. WARNING! To prevent death and serious injury. Do not cut lumber containing

foreign objects (nails, metal, etc.).

Figure R: Lumber Position

9. Clamp the lumber in place against the Log Supports (82, 91) using the Log Clamp (89) in the location shown above. Position the Log

Clamp is below the level of the blade.

10. Tighten all Bolts and T-Handles on the Log Clamp (89) and the Log Supports (82, 91). Verify that they are securely in place before proceeding.

Page 10 For technical questions, please call 1-800-520-0882. ITEM 61712

Page 11

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.

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.

16. Adjust the Throttle to bring the Blade up to speed. The Locking Ring can be turned to lock the Throttle in place.

Height Adjustment Handle (30)

Scale

Pointer

Knob

Scale

Figure S: Scale and Scale Pointer

12. Release both Lock Handles (54, 59). Turn the Height Adjustment Handle (30) and adjust the cutting height until the Scale Pointer points to the desired thickness. Engage both Lock Handles (54, 59).

13. The cut direction must be as shown below. If the log is cut from the other direction, the saw blade will push the lumber away from the supports and may cause the lumber to become unstable.

Start

of cut

CUTTING DIRECTION

Locking Ring

Throttle Lever

Figure U: Throttle Control

17. Throttle speed may need to be increased when the Saw is under load.

18. Move the Saw Head slowly along the track and against the lumber to make the cut.

NOTE: Repeated adjustments will need to be made during cutting.

19. Shut off engine if blade binds, breaks,

or another problem is suspected. Do not try to back the blade out of an incomplete but while engine is running.

SAFETYOPERATIONMAINTENANCE ASSEMBLY

Figure T: Direction of Cut

End

of cut

20. Trim off the rounded sides of the lumber.

21. After the lumber is squared-off, boards or posts can be cut.

22. To prevent accidents, turn off the engine and disconnect its spark plug wire after use. Wait for the engine to cool, clean external parts with clean cloth, then store the equipment out of children's reach according to the Storage instructions in this manual.

Page 11For technical questions, please call 1-800-520-0882.ITEM 61712

Page 12

Servicing

TO PREVENT SERIOUS INJURY FROM ACCIDENTAL STARTING:

SAFETY OPERATION MAINTENANCEASSEMBLY

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.

Maintenance Procedures

Many maintenance procedures, including those not detailed in this manual, will need to be

performed by a qualied technician for safety. If you have any doubts about your ability to safely service the equipment or engine, have a qualied technician service the equipment instead.

Note: These procedures are in addition to the regular checks and maintenance explained as part of the regular operation of the engine and equipment.

Engine Maintenance and Service

Follow the instructions found in the included engine manual.

Storage

1. Wait for engine to cool, then clean equipment with clean cloth.

2. Clean the engine and/or prepare it for storage according to engine manual instructions.

3. Apply a thin coat of rust preventive oil to all uncoated metal parts.

Equipment Lubrication

1. Lubricate the Bandwheel Axles and Square and Round Posts with machine oil before each use.

2. Lubricate the Tension Handle with grease monthly.

4. Cover and store in a dry, well-ventilated area out of reach of children.

5. For cold weather operation, store the equipment in a cool dry area to prevent condensation and premature wear.

Page 12 For technical questions, please call 1-800-520-0882. ITEM 61712

Page 13

Equipment Troubleshooting

Problem Possible Causes Probable Solutions

Excessive blade breakage.

Premature blade dulling.

Blade cuts crooked.

Blade cuts rough.

Blade is twisting.

Unusual wear on back or side of blade. Teeth ripping from blade.

1. Insufcient blade tension.

2. Incorrect speed or feed rate.

3. Lumber loose.

4. Blade rubs against wheel ange.

5. Blade teeth too coarse for lumber, or blade too thick.

6. Teeth contacting lumber before blade up to full speed.

7. Misaligned guides.

1. Teeth too coarse.

2. Blade rotating too quickly.

3. Hard spots or scale in/on material.

4. Blade installed backwards.

5. Insufcient blade tension.

1. Lumber not square.

2. Feed pressure/rate too great.

3. Inadequate blade tension.

4. Dull blade.

5. Blade guide loose.

1. Too much blade speed and/ or rate of feed.

2. Blade is too coarse.

1. Cut is binding blade.

2. Blade tension too high.

1. Blade guides worn.

2. Blade guide bearing bracket is loose.

1. Teeth too coarse.

2. Feed rate incorrect.

3. Lumber loose.

4. Teeth lled with debris.

1. Increase blade tension.

2. Adjust speed or feed rate for the lumber being cut.

3. Make sure lumber is securely positioned against supports. Remove stray branches that prevent proper positioning.

4. Adjust blade tracking.

5. Use recommended blade only.

6. Allow blade to reach operating speed before cutting.

7. Align guides.

1. Use recommended blade only.

2. Use lower speed.

3. Reduce speed, increase feed pressure.

4. Properly install blade.

5. Tension blade properly.

1. Adjust lumber so that it is square with the blade.

2. Reduce feed rate.

3. Increase blade tension slightly.

4. Replace blade.

5. Adjust and secure blade guide.

1. Reduce blade speed and feed rate.

2. Use recommended blade only.

1. Decrease feed pressure.

2. Decrease blade tension.

1. Replace blade guides.

2. Tighten blade guide bearing bracket.

1. Use recommended blade only.

2. Adjust feed rate.

3. Make sure lumber is securely positioned against supports. Remove stray branches that prevent proper positioning.

4. Clean debris off blade.

SAFETYOPERATIONMAINTENANCE ASSEMBLY

Follow all safety precautions whenever diagnosing or servicing the equipment or engine.

Page 13For technical questions, please call 1-800-520-0882.ITEM 61712

Page 14

Parts List and Diagrams

Parts List

SAFETY OPERATION MAINTENANCEASSEMBLY

Part Description Qty

1 Wheel 4 2 Hex Nut M20 4

3a Left Wheel Frame 1

4 Clamp 1 1 5 Hex Nut M12 6 6 Hex Bolt M20×100 4

7a Right Wheel Frame 1

8 Hex Bolt M12×80 5

9 Hex Nut M12 6 10 Clamp 2 1 11 Hex Bolt M8×20 9 12 Hex Bolt M10×25 21 13 Hex Bolt M12×65 3 14 Tension Handle 1 15 Flat Washer 12 2 16 Hex Bolt M12×145 1 17 Hanging Plate 1 18 Hex Bolt M8×16 5 19 Right Clamp 1 20 Round Post 1 21 Lumber Thickness Scale 1 22 Hex Bolt M8×25 12 23 Top Frame 1 24 Flat Washer 8 9 25 Hex Nut M8 36 26 Taper Pin B6×40 2 27 Elastic Pin 5×20 1 28 Round Nut M14×1.5 2 29 Height Adjustment Arm 1 30 Height Adjustment Handle 1 31 Hex Bolt M12×65 3 32 Hex Nut M12 6 33 Guide Screw Base 1 34 External Tube 1 35 Pulley 5 36 Bolt M12×20 3 37 Snap Ring 12 3 38 Washer 3 39 Internal Tube 1 40 Hex Bolt M12×70 1 41 Washer 1 42 Flat Washer 2 43 Hex Nut M12 1 44 Bolt M10×45 2 45 Water Tank Tray 1 46 Cable Anchor Bolt 2 47 Hex Nut M10 4 48 Square Post 1 49 Hex Bolt M12×65 2 50 Blade Guard 1 51 Hex Bolt M12×45 1

Part Description Qty

52 Hex Nut M12 4 53 Hex Bolt M12×100 1 54 Left Lock Handle 1 55 Hex Bolt M8×45 6 56 Support Tube 1 57 Beam 1 58 Hex Bolt M12×80 2 59 Right Lock Handle 1 60 Hex Bolt M10×25 2 61 Elastic Washer 10 2 62 Flat Washer 10 2 63 Snap Ring 62 2 64 Bearing 6305 RZ 4 65 V- Belt B1900 1 66 Bandwheel 2 67 Clutch 1 68 Pin 1 69 Blade 1 70 Bolt M8×45 4 71 Fixed Block 4 72 Blade Guide 2 73 Blade Guide Shaft 2 74 Short Bandwheel Axle 1 75 Long Bandwheel Axle 1 76 V- Belt B1422 1 77 Hex Flange Bolt M10×25 28 78 Track 1 2

79 End Stop 4 80a End Support 2 81a Middle Support 2

82 Log Support 2

83 Rod Support 2

84 Hex Flange Nut M10 32

85 Round Tube 1 86a Rocker Tube Sleeve 1

87 Log Support T-Handle

88 Rocker Tube 1

89 Log Clamp 1 90a Center Support 1

91 Short Log Support 2

92 Track 2 2

93 Throttle Control 1

94 Pushing Handle 1

95 Water Tank 1

96 Switch 1

97 Water Tube 1

98 Spring Washer 10 2

99 Hex Nut M10 4 100 Blade Roller Bearing 2 101 Top Frame Brace 1

M10x1.5x30 5

Page 14 For technical questions, please call 1-800-520-0882. ITEM 61712

Page 15

Assembly Diagram

101

SAFETYOPERATIONMAINTENANCE ASSEMBLY

Page 15For technical questions, please call 1-800-520-0882.ITEM 61712

Page 16

Assembly Diagram (continued)

SAFETY OPERATION MAINTENANCEASSEMBLY

100

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Page 17

Assembly Diagram (continued)

SAFETYOPERATIONMAINTENANCE ASSEMBLY

90a

86A

81a

80a

Page 17For technical questions, please call 1-800-520-0882.ITEM 61712

Page 18

PLEASE READ THE FOLLOWING CAREFULLY

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

SAFETY OPERATION MAINTENANCEASSEMBLY

ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.

Record Product’s Serial Number Here:

Note: If product has no serial number, record month and year of purchase instead.

Note: Some parts are listed and shown for illustration purposes only,

and are not available individually as replacement parts.

Page 18 For technical questions, please call 1-800-520-0882. ITEM 61712

Page 19

Limited 90 Day Warranty

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. This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper installation, normal wear and tear, or to lack of maintenance. We shall in no event be liable for death, injuries to persons or property, or for incidental, contingent, special or consequential damages arising from the use of our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.

our inspection veries 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. We will return repaired products at our expense, but if we determine there is no defect, or that the defect resulted from causes not within the scope of our warranty, then you must bear the cost of returning the product.

This warranty gives you specic legal rights and you may

also have other rights which vary from state to state.

3491 Mission Oaks Blvd. • PO Box 6009

Camarillo, CA 93011 • (800) 444-3353

SAFETYOPERATIONMAINTENANCE ASSEMBLY

Page 19For technical questions, please call 1-800-520-0882.ITEM 61712

Page 20

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 520-0882

Page 21

Page 22

Table of Contents

Specifications ............................................. 2

Safety ......................................................... 3

Setup .......................................................... 6

SAFETY OPERATION MAINTENANCESETUP

Operation .................................................... 8

Specifications

Displacement 280cc Engine Type Horizontal Single Cylinder 4 Stroke OHV Cooling System Forced air cooled

Fuel

Engine Oil

Run Time @ 50% Load with full tank

Sound Level 106 dB Bore x Stroke 78 mm x 58 mm Compression Ratio 8.2:1 Rotation viewed from PTO

(power takeoff - the output shaft)

Maintenance .............................................. 11

Troubleshooting ......................................... 14

Warranty Information ................................. 16

Parts List and Diagram .............................. 18

Type 87+ octane unleaded gasoline Capacity 1 Gallon

Type SAE

Capacity 1.16 Quart

Shaft 1″ x 3.5″

10W-30 above 32° F

5W30 at 32° F or below

3 hours

Counterclockwise

Shaft

Spark Plug

Valve Clearance

Speed Idle 1,800 ± 50 RPM

Keyway 1/4″ (6.3 mm)

End Tapped 7/16 - 20

Type F6TC (Torch)

Gap 0.7 - 0.8 mm

Intake 0.10 - 0.15 mm Exhaust 0.15 - 0.20 mm

Page 2 For technical questions, please call 1-800-520-0882. 280cc Engine

Page 23

Symbol Definitions

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.

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.

Addresses practices not related to personal injury.

SAFETYOPERATIONMAINTENANCE SETUP

Symbol Property or Statement

RPM

Revolutions Per Minute

Horsepower

WARNING marking concerning Risk of Eye Injury. Wear ANSI-approved safety goggles with side shields.

Read the manual before set-up and/or use.

WARNING marking concerning Risk of Hearing Loss. Wear hearing protection.

Symbol Property or Statement

WARNING marking concerning Risk of Respiratory Injury. Operate engine OUTSIDE and far away from windows, doors, and vents.

WARNING marking concerning Risk of Fire while handling fuel. Do not smoke while handling fuel.

WARNING marking concerning Risk of Fire. Do not refuel while operating. Keep flammable objects away from engine.

IMPORTANT SAFETY INSTRUCTIONS

WARNING! Read all instructions.

Failure to follow all instructions listed below may result in fire, serious injury and/or DEATH.

SAVE THESE INSTRUCTIONS

Set up Precautions

1. Gasoline fuel and fumes are flammable, and potentially explosive. Use proper fuel storage and handling procedures. Do not store fuel or other flammable materials nearby.

2. Have multiple ABC class fire extinguishers nearby.

3. Operation of this equipment may create sparks that can start fires around dry vegetation. A spark arrestor may be required. The operator should contact local fire agencies for laws or regulations relating to fire prevention requirements.

4. Set up and use only on a flat, level, well-ventilated surface.

Page 3For technical questions, please call 1-800-520-0882.280cc Engine

Page 24

5. Wear ANSI-approved safety goggles, heavy-duty work gloves, and dust mask/respirator during set up.

Operating Precautions

6. Use only lubricants and fuel recommended in the Specifications chart of this manual.

1. CARBON MONOXIDE HAZARD

SAFETY OPERATION MAINTENANCESETUP

NEVER use inside a home or garage, EVEN IF doors and windows are open.

Only use OUTSIDE and far away from windows, doors, and vents.

2. Keep children away from the equipment, especially while it is operating.

3. Keep all spectators at least six feet from the Engine during operation.

4. Fire Hazard! Do not fill gas tank while engine is running. Do not operate if gasoline has been spilled. Clean spilled gasoline before starting engine. Do not operate near pilot light or open flame.

5. Do not touch engine during use. Let engine cool down after use.

6. Never store fuel or other flammable materials near the engine.

7. Only use a suitable means of transport and lifting devices with sufficient weight bearing capacity when transporting the Engine.

8. Secure the Engine on transport vehicles to prevent the tool from rolling, slipping, and tilting.

9. Industrial applications must follow OSHA requirements.

10. Do not leave the equipment unattended when it is running. Turn off the equipment (and remove safety keys, if available) before leaving the work area.

11. Engine can produce high noise levels. Prolonged exposure to noise levels above 85 dBA is hazardous to hearing. Always wear ear protection when operating or working around the gas engine while it is operating.

Using an engine indoors CAN KILL YOU IN MINUTES.

Engine exhaust contains carbon monoxide. This is a poison you cannot see or smell.

12. Wear ANSI-approved safety glasses, hearing protection, and NIOSH-approved dust mask/ respirator under a full face shield along with steel-toed work boots during use.

13. People with pacemakers should consult their physician(s) before use. Electromagnetic fields in close proximity to a heart pacemaker could cause pacemaker interference or pacemaker failure. Caution is necessary when near the engine’s magneto or recoil starter.

14. Use only accessories that are recommended by Harbor Freight Tools for your model. Accessories that may be suitable for one piece of equipment may become hazardous when used on another piece of equipment.

15. 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.

16. 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.

17. Do not overreach. Keep proper footing and balance at all times. This enables better control of the equipment in unexpected situations.

18. Dress properly. Do not wear loose clothing or jewelry. Keep hair, clothing and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.

19. Parts, especially exhaust system components, get very hot during use. Stay clear of hot parts.

20. Do not cover the engine or equipment during operation.

21. Keep the equipment, engine, and surrounding area clean at all times.

22. Use the equipment, accessories, etc., in accordance with these instructions and in the manner intended for the particular type of equipment, taking into account the working conditions and the work to be performed. Use of the equipment for operations different from those intended could result in a hazardous situation.

23. Do not operate the equipment with known leaks in the engine’s fuel system.

24. This product contains or, when used, produces a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. (California Health & Safety Code § 25249.5, et seq.)

Page 4 For technical questions, please call 1-800-520-0882. 280cc Engine

Page 25

25. When spills of fuel or oil occur, they must be cleaned up immediately. Dispose of fluids and cleaning materials as per any local, state, or federal codes and regulations. Store oil rags in a bottom-ventilated, covered, metal container.

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. Do not modify the equipment and do not use the equipment for a purpose for which it is not intended.

Service Precautions

1. Before service, maintenance, or cleaning:

a. Turn the engine switch to its “OFF” position.

b. Allow the engine to completely cool.

c. Then, remove the spark plug

cap from the spark plug.

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. Only a qualified service technician may adjust parts that may increase or decrease governed engine speed.

4. Wear ANSI-approved safety goggles, heavy-duty work gloves, and dust mask/respirator during service.

5. Maintain labels and nameplates on the equipment. These carry important information. If unreadable or missing, contact Harbor Freight Tools for a replacement.

SAFETYOPERATIONMAINTENANCE SETUP

6. Have the equipment serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the equipment is maintained. Do not attempt any service or maintenance procedures not explained in this manual or any procedures that you are uncertain about your ability to perform safely or correctly.

7. Store equipment out of the reach of children.

8. Follow scheduled engine and equipment maintenance.

Refueling:

1. Do not smoke, or allow sparks, flames, or other sources of ignition around the equipment, especially when refuelling.

2. Do not refill the fuel tank while the engine is running or hot.

3. Do not fill fuel tank to the top. Leave a little room for the fuel to expand as needed.

4. Refuel in a well-ventilated area only.

5. Wipe up any spilled fuel and allow excess to evaporate before starting engine. To

prevent FIRE, do not start the engine while the smell of fuel hangs in the air.

SAVE THESE

INSTRUCTIONS.

Page 5For technical questions, please call 1-800-520-0882.280cc Engine

Page 26

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 OPERATION MAINTENANCESETUP

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.

Operation of this equipment may create sparks that can start fires around dry vegetation. A spark arrestor may be required. The operator should contact local fire agencies for laws or regulations relating to fire prevention requirements.

WARNING! DO NOT INSTALL THIS ENGINE ON A VEHICLE.

Engine Controls

Air Filter

Fuel Cap

Throttle

Choke

Oil Drain Plug

Fuel Valve

Engine Switch

Serial

Number

Location

(Write near

assembly diagram

in manual.)

Starter

Handle

Muffler

Dipstick

Page 6 For technical questions, please call 1-800-520-0882. 280cc Engine

Page 27

High Altitude Operation Above 3000 feet

WARNING! TO PREVENT SERIOUS INJURY FROM FIRE:

Follow instructions in a well-ventilated area away from ignition sources. If the engine is hot from use, shut the engine off and wait for it to cool before proceeding. Do not smoke.

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. Proper operation can be ensured by installing an altitude kit at altitudes higher than 3000 ft. above sea level. At elevations above 8000 ft, the engine may experience decreased performance, even with the proper main jet. Operating this engine without the proper altitude kit installed may increase the engine’s emissions and decrease fuel economy and performance. The kit should be installed by a qualified mechanic.

1. Turn off the engine.

SAFETYOPERATIONMAINTENANCE SETUP

2. Close the fuel valve.

3. Place a bowl under the fuel cup to catch any spilled fuel.

4. Unthread the bolt holding the fuel cup.

CAUTION! Carburetor bowl may have gas in it which will leak upon removing the bolt.

5. Remove the bolt, Bolt Seal, fuel cup, Fuel Cup Seal and Main Jet from the body of the carburetor assembly. A carburetor screwdriver (not included) is needed to remove and install the Main Jet.

Note: The mixing tube is held in place by the main jet and might fall out when it is removed. If it falls out, replace it in the same orientation before replacing the main jet.

6. Replace the Main Jet with the replacement Main Jet needed for your altitude range (part 1a or 2a).

Note: The Fuel Cup Seal and Bolt Seal may be damaged during removal and should be replaced with the new ones from the kit.

7. Replace the Fuel Cup Seal (4a), fuel cup, Bolt Seal (3a), and bolt. Tighten in place.

CAUTION: Do not cross thread bolt when tightening. Finger tighten first and then use a wrench to make sure the bolt is properly threaded.

Carburetor Assembly

Fuel Cup Seal

Mixing Tube

(might remain inside carburetor)

Main Jet

Fuel Cup

Bolt Seal

Bolt

8. Wipe up any spilled fuel and allow excess to evaporate before starting engine. To prevent FIRE, do not start the engine while the smell of fuel hangs in the air.

High Altitude Kit Parts List - A

Part Description Qty

1a Main Jet 3000-6000 ft. 1 2a Main Jet 6000-8000 ft. 1 3a Bolt Seal 1 4a Fuel Cup Seal 1

Page 7For technical questions, please call 1-800-520-0882.280cc Engine

Page 28

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 OPERATION MAINTENANCESETUP

Pre-Start Checks

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.

Checking and Filling Engine Oil

CAUTION! Your Warranty is VOID if the engine’s crankcase is not properly filled with oil before each use. Before each use, check the oil level. Do not run the engine with low or no engine oil. Running the engine with no or low engine oil WILL permanently damage the engine.

1. Make sure the engine is stopped and is level.

2. Close the Fuel Valve.

3. Clean the top of the Dipstick and the area around it. Remove the Dipstick by threading it counterclockwise, and wipe it off with a clean lint free rag.

Full level

Reinsert the Dipstick without threading it in and remove it to check the oil level. The oil level should be up to the full level as shown above.

5. If the oil level is at or below the low mark add the appropriate type of oil until the oil level is at the proper level. SAE 10W-30 oil is recommended for general use. (The SAE Viscosity Grade chart on page 12 in the Service section shows other viscosities to use in different average temperatures.)

6. Thread the dipstick back in clockwise.

Full level

CAUTION! Do not run the engine with too little oil. The engine will be permanently damaged.

Checking and Filling Fuel

WARNING! TO PREVENT SERIOUS

INJURY FROM FIRE:

Fill the fuel tank in a well-ventilated area away from ignition sources. If the engine is hot from use, shut the engine off and wait for it to cool before adding fuel.

Do not smoke.

1. Clean the Fuel Cap and the area around it.

2. Unscrew and remove the Fuel Cap.

3. If needed, fill the Fuel Tank to about 1 inch under the fill neck of the Fuel Tank with 87+ octane unleaded gasoline.

Note: Do not use gasoline containing more than 10% ethanol (E10). Do not use E85 ethanol.

Note: Do not use gasoline that has been stored in a metal fuel container or a dirty fuel container. It can cause particles to enter the carburetor, effecting engine performance and/or causing damage.

4. Then replace the Fuel Cap.

5. Wipe up any spilled fuel and allow excess to evaporate before starting engine. To prevent FIRE, do not start the engine while the smell of fuel hangs in the air.

Starting the Engine

Before Starting the Engine

Before starting the engine:

a. Follow the Set Up Instructions in the equipment manual to prepare the equipment. b. Inspect the equipment and engine. c. Fill the engine with the proper amount and type of both fuel and oil. d. Read the Equipment Operation section in the equipment manual.

Page 8 For technical questions, please call 1-800-520-0882. 280cc Engine

Page 29

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.

2. Open the Fuel Valve.

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.

Choke RUN

SAFETYOPERATIONMAINTENANCE SETUP

4. Turn the Engine Switch on.

OFF

5. Grip the Starter Handle of the Engine loosely and pull it slowly several times to allow the gasoline to flow into the Engine’s carburetor. Then pull the Starter Handle gently until resistance is felt. Allow Cable to retract fully and then pull it quickly. Repeat until the engine starts.

Note: Do not let the Starter Handle snap back against the engine. Hold it as it recoils so it doesn't hit the engine.

Page 9For technical questions, please call 1-800-520-0882.280cc Engine

Page 30

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.

Note: Moving the Choke Lever too

SAFETY OPERATION MAINTENANCESETUP

fast could stall the engine.

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.

b. The operational break-in period will last about 3 hours of use. During this period:

• Do not apply a heavy load to the equipment.

• Do not operate the engine at its maximum speed.

c. The maintenance break-in period will last about 20 hours of use. After this period:

• Change the engine oil.

Under normal operating conditions subsequent maintenance follows the schedule explained in the MAINTENANCE AND SERVICING section.

Stopping the Engine

Choke RUN

1. To stop the engine in an emergency, turn the Engine Switch off.

2. Under normal conditions, use the following procedure:

a. Slide the Throttle or Speed Control

Lever to SLOW (the “turtle”).

b. Turn the Engine Switch off.

c. Close the Fuel Valve.

OFF

Page 10 For technical questions, please call 1-800-520-0882. 280cc Engine

Page 31

Service

WARNING

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.

Follow all service instructions in this manual. The engine may fail critically if not serviced properly.

Cleaning, Maintenance, and Lubrication Schedule

Note: This maintenance schedule is intended solely as a general guide. If performance decreases or if

equipment operates unusually, check systems immediately. The maintenance needs of each piece of equipment will differ depending on factors such as duty cycle, temperature, air quality, fuel quality, and other factors.

Note: The following procedures are in addition to the regular checks and maintenance explained as part of the regular operation of the engine and equipment.

SAFETYOPERATIONMAINTENANCE SETUP

Monthly or

every 20

hr. of use

Procedure

Brush off outside of engine

Check engine oil level

Check air cleaner

Check deposit cup

Change engine oil

Clean/replace air cleaner

Check and clean spark plug

1. Check/adjust idle speed

2. Check/adjust valve clearance

3. Clean fuel tank, strainer and carburetor

4. Clean carbon build-up from combustion chamber

Replace fuel line if necessary

Before

Each Use

*Service more frequently when used in dusty areas.

**These items should be serviced by a qualied technician.

Every 3 mo. or

50 hr. of use

Every 6 mo. or

100 hr. of use

Yearly or every 300 hr. of use

** **

Every

2 Years

Page 11For technical questions, please call 1-800-520-0882.280cc Engine

Page 32

Maintenance Procedures

Many maintenance procedures, including any not detailed in this manual, will need to be performed by a qualified technician

SAFETY OPERATION MAINTENANCESETUP

Checking and Filling Fuel

Do not smoke.

1. Clean the Fuel Cap and the area around it.

2. Unscrew and remove the Fuel Cap.

3. If needed, fill the Fuel Tank to about

Note: Do not use gasoline containing more than 10% ethanol (E10). Do not use E85 ethanol.

Note: Do not use gasoline that has been stored in a metal fuel container or a dirty fuel container. It can cause particles to enter the carburetor, effecting engine performance and/or causing damage.

4. Then replace the Fuel Cap.

5. Wipe up any spilled fuel and allow excess

Engine Oil Change

CAUTION! Oil is very hot during operation and can

cause burns. Wait for engine to cool before changing oil.

1. Make sure the engine is stopped and is level.

2. Close the Fuel Valve.

3. Place a drain pan (not included) underneath

4. Remove the drain plug and, if possible,

5. Replace the drain plug and tighten it.

6. Clean the top of the Dipstick and the

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.

WARNING! TO PREVENT SERIOUS

INJURY FROM FIRE:

Fill the fuel tank in a well-ventilated area away from ignition sources. If the engine is hot from use, shut the engine off and wait for it to cool before adding fuel.

1 inch under the fill neck of the Fuel Tank with 87+ octane unleaded gasoline.

to evaporate before starting engine. To prevent FIRE, do not start the engine while the smell of fuel hangs in the air.

the crankcase’s drain plug.

tilt the crankcase slightly to help drain the oil out. Recycle used oil.

area around it. Remove the Dipstick by threading it counterclockwise, and wipe it off with a clean lint free rag.

Full level

Add the appropriate type of oil until the oil level is at the full level. SAE 10W-30 oil is recommended for general use. The SAE Viscosity Grade chart shows other viscosities to use in different average temperatures.

Full level

SAE Viscosity Grades

10W-30

5W-30

-20 0 20 40 60 80 100°F

Average outdoor temperature

8. Thread the dipstick back in clockwise.

CAUTION! Do not run the engine with too little oil. The engine will be permanently damaged.

Air Filter Element Maintenance

1. Remove the air filter cover and the air filter elements and check for dirt. Clean or replace as described below.

2. Cleaning:

• For “paper” filter elements: To prevent injury from dust and debris, wear ANSI-approved safety goggles, NIOSHapproved dust mask/respirator, and heavyduty work gloves. In a well-ventilated area away from bystanders, use pressurized air to blow dust out of the air filter. If this does not get the filter clean, replace it.

• For foam filter elements: Wash the element in warm water and mild detergent several times. Rinse. Squeeze out excess water and allow it to dry completely. Soak the filter in lightweight oil briefly, then squeeze out the excess oil.

3. Install the new filter or the cleaned filter. Secure the Air Cleaner Cover before use.

Page 12 For technical questions, please call 1-800-520-0882. 280cc Engine

Page 33

Spark Plug Maintenance

Spark

Plug

Cap

Disconnect spark plug cap from end of plug.

1. Clean out debris from around spark plug.

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.

Storage

NOTICE: Recommended Spark Plugs:

F6TC (Torch) Using an incorrect spark plug may damage the engine.

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.

5. Install the new spark plug or the cleaned spark plug into the engine. Gasket-style: Finger-tighten until the gasket contacts the cylinder head, then about 1/2-2/3 turn more. Non-gasket-style: Finger-tighten until the plug contacts the head, then about 1/16 turn more.

NOTICE: Tighten the spark plug properly. If loose, the spark plug will cause the engine to overheat. If overtightened, the threads in the engine block will be damaged.

6. Apply dielectric spark plug boot protector (not included) to the end of the spark plug and reattach the wire securely.

SAFETYOPERATIONMAINTENANCE SETUP

When the equipment is to remain idle for longer than 20 days, prepare the engine for storage as follows:

1. CLEANING:

Wait for engine to cool, then clean engine with dry cloth.

NOTICE: Do not clean using water. The water will gradually enter the engine and cause rust damage. Apply a thin coat of rust preventive oil to all metal parts.

2. FUEL:

WARNING! TO PREVENT SERIOUS

INJURY FROM FIRE:

Drain the fuel tank in a well-ventilated area away from ignition sources. If the engine is hot from use, shut the engine off and wait for it to cool before draining fuel.

Do not smoke.

a. Place a funnel leading to a proper gasoline

container below the carburetor.

Sediment Cup

Drain Plug

Remove the drain bolt from the bottom of the

carburetor bowl and allow the fuel to drain.

c. Remove the small sediment cup next to the bowl

and allow the fuel to drain from there as well.

d. Open the fuel valve. After all fuel has drained,

reinstall the drain bolt and sediment cup. Tighten securely.

3. LUBRICATION:

a. Change engine oil.

b. Clean out area around spark plug.

Remove spark plug and pour one tablespoon of engine oil into cylinder through spark plug hole.

c. Replace spark plug, but leave

spark plug cap disconnected.

d. Pull Starter Handle to distribute oil in cylinder.

Stop after one or two revolutions when you feel the piston start the compression stroke (when you start to feel resistance).

4. STORAGE AREA: Cover and store in a dry, level, well-ventilated area out of reach of children. Storage area should also be away from ignition sources, such as water heaters, clothes dryers, and furnaces.

5. AFTER STORAGE: Before starting the engine after storage, keep in mind that untreated gasoline will deteriorate quickly. Drain the fuel tank and change to fresh fuel if untreated gasoline has been sitting for a month, if treated gasoline has been sitting beyond the fuel stabilizer’s recommended time period, or if the engine does not start.

Page 13For technical questions, please call 1-800-520-0882.280cc Engine

Page 34

Troubleshooting

Problem Possible Causes Probable Solutions

Engine will not start FUEL RELATED:

SAFETY OPERATION MAINTENANCESETUP

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.)

4. Low quality or deteriorated, old gasoline.

5. Carburetor not primed.

6. Dirty fuel passageways.

7. Carburetor needle stuck. Fuel can be smelled in the air.

8. Too much fuel in chamber. This can be caused by the carburetor needle sticking.

9. Clogged Fuel Filter.

IGNITION (SPARK) RELATED:

1. Spark plug cap not connected securely.

2. Spark plug electrode wet or dirty.

3. Incorrect spark plug gap.

4. Spark plug cap broken.

5. Incorrect spark timing or faulty ignition system.

COMPRESSION RELATED:

1. Cylinder not lubricated. Problem after long storage periods.

2. Loose or broken spark plug. (Hissing noise will occur when trying to start.)

3. Loose cylinder head or damaged head gasket. (Hissing noise will occur when trying to start.)

4. Engine valves or tappets mis-adjusted or stuck.

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.

Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.).

4. Use fresh 87+ octane unleaded gasoline only. Do not use gasoline with more

than 10% ethanol (E15, E20, E85, etc.).

5. Pull on Starter Handle to prime.

6. Clean out passageways using fuel additive. Heavy deposits may require further cleaning.

7. Gently tap side of carburetor float chamber with screwdriver handle.

8. Turn Choke to RUN position. Remove spark plug and pull the start handle several times to air out the chamber. Reinstall spark plug and set Choke to CHOKE position.

9. Replace Fuel Filter.

IGNITION (SPARK) RELATED:

1. Connect spark plug cap properly.

2. Clean spark plug.

3. Correct spark plug gap.

4. Replace spark plug cap.

5. Have qualified technician diagnose/ repair ignition system.

COMPRESSION RELATED:

1. Pour tablespoon of oil into spark plug hole. Crank engine a few times and try to start again.

2. Tighten spark plug. If that does not work, replace spark plug. If problem persists, may have head gasket problem, see #3.

3. Tighten head. If that does not remedy problem, replace head gasket.

4. Have qualified technician diagnose/ repair ignition system.

Follow all safety precautions whenever diagnosing or servicing the equipment or engine.

Page 14 For technical questions, please call 1-800-520-0882. 280cc Engine

Page 35

Problem Possible Causes Probable Solutions

Engine misfires 1. Spark plug cap loose.

2. Incorrect spark plug gap or damaged spark plug.

3. Defective spark plug cap.

4. Old or low quality gasoline.

5. Incorrect compression.

Engine stops suddenly

Engine stops when under heavy load

Engine knocks 1. Old or low quality gasoline.

Engine backfires 1. Impure or low quality gasoline.

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. Dirty air filter

2. Engine running cold.

2. Engine overloaded.

3. Incorrect spark timing, deposit buildup, worn engine, or other mechanical problems.

2. Engine too cold.

3. Intake valve stuck or overheated engine.

4. Incorrect timing.

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. Diagnose and repair compression.

(Use Engine will not start: COMPRESSION RELATED section.)

1. Fill engine oil to proper level. Check engine oil before EVERY use.

2. Fill fuel tank with fresh 87+ octane unleaded gasoline only.

Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.).

3. Test/replace fuel tank cap.

4. Have qualified technician service magneto.

5. Secure spark plug cap.

1. Clean or replace element.

2. Allow engine to warm up prior to operating equipment.

1. Fill fuel tank with fresh 87+ octane unleaded gasoline only.

Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.).

2. Do not exceed equipment’s load rating.

3. Have qualified technician diagnose and service engine.

1. Fill fuel tank with fresh 87+ octane unleaded gasoline only.

Do not use gasoline with more than 10% ethanol (E15, E20, E85, etc.).

2. Use cold weather fuel and oil additives to prevent backfiring.

3. Have qualified technician diagnose and service engine.

4. Check engine timing.

SAFETYOPERATIONMAINTENANCE SETUP

Follow all safety precautions whenever diagnosing or servicing the equipment or engine.

Page 15For technical questions, please call 1-800-520-0882.280cc Engine

Page 36

Warranty Information

Limited 90 Day Warranty

SAFETY OPERATION MAINTENANCESETUP

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. We will return repaired products at our expense, but if we determine there is no defect, or that the defect resulted from causes not within the scope of our warranty, then you must bear the cost of returning the product.

This warranty gives you specific legal rights and you may also have other rights which vary from state to state.

3491 Mission Oaks Blvd. • PO Box 6009 •

Camarillo, CA 93011 • (800) 520-0882

Page 16 For technical questions, please call 1-800-520-0882. 280cc Engine

Page 37

Emission Control System Warranty

United States Emission Control Defects Warranty Statement

The United States Environmental Protection Agency (herein EPA) and Harbor Freight Tools (herein HFT) are pleased to explain the emission control system warranty on your 2013 and later Small Off-Road Engine (herein engine). Within the United States, new off-road, spark-ignition

engines certied for model year 2013 and later, must be designed,

built and equipped to meet the stringent anti-smog standards set forth by the EPA. HFT must warrant the emission control system on your engine for the periods of time described below, provided there has been no abuse, neglect or improper maintenance of your engine.

Your emission control system may include parts such as the carburetor or fuel-injection system, and the ignition system. Also included may be hoses, belts, connectors and other emission-related assemblies.

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.

Harbor Freight Tools Emission Control Defects Warranty Coverage

Engines are warranted for a period of two (2) years relative to emission control parts defects, subject to the provisions set forth below. If any emission related part on your engine is defective, the part will be repaired or replaced by HFT.

Owner’s Warranty Responsibilities

• As the engine owner, you are responsible for the performance of the required maintenance listed in your Owner’s Manual. HFT recommends that you retain all receipts covering maintenance on your engine, but HFT cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance.

• As the engine owner, you should, however, be aware that HFT may deny you warranty coverage if your engine or a part has failed due to abuse, neglect, improper

maintenance, or unapproved modications.

• You are responsible for shipping your engine to a HFT warranty

station as soon as a problem exists. Contact the HFT Customer Service department at the number below to make shipping arrangements. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days.

If you have any questions regarding your warranty rights and responsibilities, you should contact the Harbor Freight Tools Customer Service Department at 1-800-520-0882.

Harbor Freight Tools Emission Control Defects Warranty Provisions

1. Length of Coverage

HFT warrants to a rst retail purchaser and each

subsequent purchaser that the engine is free from defects in materials and workmanship that cause the failure of warranted parts for a period of two (2) years

after the date of delivery to the rst retail purchaser.

2. No Charge Repair or Replacement

Repair or replacement of any warranted part will be performed at no charge to the owner if the work is performed through a warranty station authorized by HFT. For emissions warranty service, contact the HFT Customer Service Department at 1-800-520-0882.

3. Consequential Damages Coverage

Coverage under this warranty shall also extend to the failure of any engine components caused by the failure of any warranted part while it is still covered under this warranty.

4. Coverage Exclusions

Warranty claims shall be led in accordance with the provisions

of the HFT warranty policy explained in the box at the top of the previous page. HFT shall not be liable for any loss of use of the engine, for any alternative usage, for any damage to goods, loss of time, or inconvenience. Warranty coverage shall also be excluded for any part which fails, malfunctions, or is damaged due to failure to follow the maintenance and operating instructions set forth in the Owner’s Manual including, but not limited to:

a) Use of parts which are not authorized by HFT

b) Improper installation, adjustment or repair of

the engine or of any warranted part unless performed by an authorized warranty center

c) Failure to follow recommendations on fuel

use contained in the Owner’s Manual

d) Improper or inadequate maintenance of any warranted parts

e) Repairs performed outside of the authorized

warranty service dealers

f) Alterations by changing, adding to or

removing parts from the engine.

5. Service and Maintenance

Component parts which are not scheduled for replacement as required maintenance or are scheduled only for regular inspection to the effect of “repair or replace as necessary” are warranted for the warranty period. Any warranted part which is scheduled for replacement as required maintenance

is warranted for the period of time up to the rst scheduled

replacement point for that part. Any replacement part, provided it is equivalent in durability and performance, may be used in performance of maintenance or repairs. The

owner is responsible for commissioning a qualied technician/

mechanic to perform all required maintenance, as outlined in the Inspection, Cleaning, and Maintenance section in this manual.

6. Warranted Parts

1) Fuel Metering System

i) Carburetor and its internal parts.

ii) Air/fuel ratio feedback and control system.

iii) Cold start enrichment system.

iv) Fuel Tank.

2) Air Induction System

i) Controlled hot air intake system.

ii) Intake manifold.

iii) Air filter.

3) Ignition System

i) Spark Plugs.

ii) Magneto or electronic ignition system.

iii) Spark advance/retard system.

4) Exhaust Gas Recirculation (EGR) System (if so equipped)

i) EGR valve body, and carburetor spacer.

ii) EGR rate feedback and control system.

5) Air Injection System

i) Air pump or pulse valve.

ii) Valves affecting distribution of flow.

iii) Distribution manifold.

6) Catalyst or Thermal Reactor System (if so equipped)

i) Catalytic converter.

ii) Thermal reactor.

iii) Exhaust manifold.

7) Particulate Controls

Traps, filters, precipitators, and any other device used to capture particulate emissions.

SAFETYOPERATIONMAINTENANCE SETUP

Page 17For technical questions, please call 1-800-520-0882.280cc Engine

Page 38

Parts List and Diagram

Parts List

SAFETY OPERATION MAINTENANCESETUP

Part Description Qty

1 Gasket, Cylinder Head 1 2 Cover Asm., Head 1 3 Gasket, Head Cover 1 4 Tube, Breather 1 5 Bolt Asm., Head Cover 1 6 Stud 2 7 Stud 2 8 Pin 2

9 Bolt, Cylinder Head 4 10 Plug, Spark 1 11 Head Asm., Cylinder 1 12 Crankcase Asm. 1 13 Seal, Oil 1 14 Sensor, Engine Oil 1 15 Frame, Fuel Tank Inst. 1 16 Plug, Rubber 1 17 Protector, Oil 1 18 Bolt 1 19 Washer, Flat 2 20 Bolt, Drain Plug 2 21 Clip 1 22 Arm, Governor 1 23 Washer, Flat 1 24 Pin 1 25 Bolt 4 26 Bolt 2 27 Cover, Crankcase 1 28 Gasket, Crankcase 1 29 Plug Asm., Engine Oil 1 30 Dipstick Asm., Oil 1 31 Pin 2 32 Bolt 7 33 Bearing 1 34 Gear Asm., Governor 1 35 Seal, Oil 1 36 Crankshaft Asm. 1 37 Ring Set, Oil 1 38 Clip, Piston Pin 2 39 Piston 1

Part Description Qty

40 Pin, Piston 1 41 Rod, Connecting 1 42 Ring, Primary 1 43 Ring, Secondary 1 44 Camshaft Asm. 1 45 Valve, Exhaust 1 46 Valve, Intake 1 47 Seat, Valve Spring 1 48 Retainer, Exhaust Valve 1 49 Rotator, Valve 1 50 Guide, Seal 1 51 Tappet, Valve 2 52 Lifter Asm., Valve 2 53 Plate Asm., Lifter Stopper 1 54 Bolt, Valve Adjusting 2 55 Rocker, Valve 2 56 Nut, Valve Adjusting 2 57 Nut, Valve Lock 2 58 Spring, Valve 2 59 Retainer, Valve Spring 1 60 Starter Asm., Recoil 1 61 Bolt 3 62 Shroud 1 63 Shroud, Cylinder Body 1 64 Bolt 1 65 Switch Asm., Stop Engine 1 66 Bolt 5 67 Carburetor Asm. 1 68 Gasket, Air Cleaner 1 69 Gasket, Carburetor 1 70 Plate, Carb. Insulator 1 71 Gasket, Inlet 1 72 Nut 2 73 Cleaner, Air 1 74 Bolt 1 75 Cover, Muffler Outer 1 76 Bolt 4 77 Muffler Body 1 78 Gasket, Muffler 1

Part Description Qty

79 Pipe, Exhaust 1 80 Gasket, Exhaust Outlet 1 81 Nut 3 82 Nut 2 83 Gasket, 2nd Intake Valve 1 84 Valve, 2nd Air Intake 1 85 Bolt 2 86 Shroud, Muffler 1 87 Screw 2 88 Tank, Fuel 1 89 Strainer, Fuel 1 90 Cover, Fuel Tank 1 91 Outlet Asm., Fuel Tank Oil 1 92 Clamp 5 93 Tube, Fuel 1 94 Clip 1 95 Nut 2 96 Valve, One Way 1 97 Hose, Vapor Rubber 1 98 Hose, Air Cleaner Rubber 1

99 Collector, Vapor 1 100 Bolt 2 101 Cover, Vapor Collector 1 102 Jacket 1 103 Jacket 2 104 Nut, Flywheel 1 105 Pulley, Starter 1 106 Impeller 1 107 Flywheel Asm. 1 108 Bolt 2 109 Coil, Ignition 1 110 Control Asm., Throttle 1

111 Bolt 2 112 Spring, Throttle Valve Rtn. 1 113 Rod, Governor 1 114 Support Asm., Governor 1 115 Nut 1 116 Bolt, Governor Support 1 117 Spring, Governor 1

Record Product’s Serial Number Here: Note: If product has no serial number, record month and year of purchase instead.

Note: Some parts are listed and shown for illustration purposes only,

and are not available individually as replacement parts.

Page 18 For technical questions, please call 1-800-520-0882. 280cc Engine

Page 39

Assembly Diagram

SAFETYOPERATIONMAINTENANCE SETUP

Page 19For technical questions, please call 1-800-520-0882.280cc Engine

Page 40

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

30º

45º

Ø6.5 in. /

165.1mm

Ø5.43 in. / 138mm

Ø4.45 in. / 113mm

5/16-24 UNF

Ø3.48 in. / 88.5mm

Ø2.2 in. / 56mm

Ø1 in. / 25.4mm

Ø1.375 in. / 35mm

Ø2.84 in. / 72.2mm

Ø1.1 in. / 28mm

0.25 in. / 6.3mm

7/16-20 UNF

Ø1 in. / 25.4mm

0.36 in. / 9.13mm

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 520-0882

www.harborfreight.com