Harbor Freight Tools Chipper 94593 User Manual

PNEUMATIC GARDEN SHEARS  
94593  
ASSEMBLY AND OPERATING INSTRUCTIONS  
Due to continuing improvements, actual product may differ slightly from the product described herein.  
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Copyright © 2006 by Harbor Freight Tools®. All rights reserved. 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.  
For technical questions and replacement parts, please call 1-800-444-3353  
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7. Use eye protection. Always wear ANSI-approved impact safety goggles.  
Wear a full face shield if you are producing flying wood chips.  
8. Do not overreach. Keep proper footing and balance at all times. Do not reach  
over or across running machines.  
9. Maintain tools with care. Keep tools sharp and clean for better and safer  
performance. Follow instructions for lubricating and changing accessories.  
Inspect tool air hoses periodically and, if damaged, have them repaired by an  
authorized technician.The handles must be kept clean, dry, and free from oil  
and grease at all times.  
10. Disconnect air line. Unplug air line from the tool when not in use.  
11. Avoid unintentional starting. Be sure the switch is in the Off (and locked)  
position when not in use and before plugging air line in. Do not carry any tool  
with your finger on the trigger, whether it is plugged in or not.  
12. Stay alert. Watch what you are doing, use common sense. Do not operate  
any tool when you are tired.  
13. Check for damaged parts. Before using any tool, a part that appears  
damaged should be carefully checked to determine that it will operate  
properly and perform its intended function. Check for alignment and binding  
of moving parts; any broken parts or mounting fixtures; and any other  
condition that may affect proper operation. Any part that is damaged should  
be properly repaired or replaced by a qualified technician. Do not use the tool  
if any switch does not turn On and Off properly.  
14. Replacement parts and accessories. When servicing, use only identical  
replacement parts. Use of any other parts will void the warranty. Only use  
accessories intended for use with this tool. Approved accessories are  
available from Harbor Freight Tools.  
15. Do not operate tool if under the influence of alcohol or drugs. Read  
warning labels if taking prescription medicine to determine if your judgment or  
reflexes are impaired while taking drugs. If there is any doubt, do not operate  
the tool.  
16. Maintenance. For your safety, service and maintenance should be  
performed regularly by a qualified technician.  
17. Use tools with both hands when required. Many tools such as chain  
saws, drills, routers, etc., require the use of both hands when operating. This  
helps maintain tool stability and keeps hands away from the working area of  
the tool.  
18. Compressed air only. Never use combustible gas as a power source.  
SKU 94593  
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Page 3  
Product Specific Safety Precautions  
1. Always stabilize yourself on the ladder or platform before handling and  
activating the Pneumatic Garden Shears. A second person may be helpful  
to stabilize the tool user when he is climbing a ladder or getting on a platform.  
2. Use great caution when cutting shrubs to avoid amputating fingers,  
hands or arms.The blades activate under high pressure. Once the trigger is  
pulled, the pneumatic function of the cuttings blades will not stop until the cut  
is complete.  
3. Always disconnect the air line immediately after use. Squeeze the trigger  
after the air line is disconnected to release any residual air in the chamber.  
4. Wear work gloves to protect your hands.  
Warning:The warnings, cautions, and instructions discussed in this instruction  
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.  
Unpacking  
When unpacking, check to make sure that the parts of the Pneumatic Garden  
Shears are complete. If any parts are missing or broken, please call Harbor  
Freight Tools at the number on the cover of this manual.  
Assembly  
Air Connection  
1. Attach an air hose (not supplied) to the Air Inlet (12) fitting.  
2. Optionally, for easy connection or removal, attach an Air Quick-coupler (not  
supplied) to the air hose and Air Inlet (12) fitting.  
3. Tighten all couplings and fittings.  
Air Inlet (12)  
SKU 94593  
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Page 4  
Oiler and Filter Connection  
Dirt, water, and the lack of pneumatic tool oil are major causes for tool wear. Install  
an optional oiler-filter, as illustrated below for better performance.  
1. Connect the air tool, air hoses, filter, and oiler to the Compressor Air Outlet  
as illustrated below.  
The filter and oiler (not supplied) are recommended but not mandatory for  
operation. Also, for ease of air supply transport, a portable, rechargeable air  
supply would make it easier to maneuver the garden for trimming.  
If the filter and oiler are not used, connect the air hose directly to the 1/4 inch,  
18 NPT connector located at the Air Inlet (12) fitting. Also, a few drops of  
pneumatic tool oil must be added through the Air Inlet (12) before each use.  
Note: Use pipe thread seal or Teflon tape on all threaded connections.  
Operation  
1. Place the air supply, sufficient length of air hose, and Pneumatic Shears near  
the tree or shrubs to be trimmed.  
2. Turn the air pressure on at the air supply tank or compressor.  
3. Brace yourself on the ground or ladder, then grasp the Pneumatic Shears by  
the handle.  
4. Place the open blades over the branch to be cut.  
5. Pull the Blade Safety Latch (38) down to unlock the blades.  
Blade Safety  
Latch (38)  
SKU 94593  
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Page 5  
6. Hold the handle of the Pneumatic Shears with both hands, release the safety  
latch on the Trigger Lever (22) and pull theTrigger Lever to begin the cut.  
The blades will retract once the cut is complete.  
7. When cutting is complete, push the Blade Safety Latch (38) up to lock the  
blades so they cannot close.  
8. Disconnect the air supply hose.  
Maintenance  
1. After each use, remove the air hose and wipe the Pneumatic Shears with a  
clean cloth to remove any dirt and grease buildup.  
2. To maintain tool life, always lubricate the air line by adding a few drops of  
pneumatic tool oil to the air line before each use.You can also install the  
automatic oiler-filter system, as illustrated on Page 5.  
3. Before each use, drain water out of the air compressor tank and  
condensation from the air lines. Refer to the Air Compressor Operator’s  
Manual.  
ManualTool Lubrication  
1. Disconnect the Pneumatic Shears from the air supply and turn it so the Air  
Inlet (12) fitting is facing upward.  
2. Hold the Trigger Lever (22) in and place one teaspoon of pneumatic tool oil  
into the air inlet (use SAE #10 weight oil if air tool oil is not available). Holding  
the Trigger Lever in helps circulate the oil in the air motor.  
3. Connect the Pneumatic Shears to the air supply and cover the air outlet with  
a towel. Run for a few seconds. Excess oil with be blown out.  
Troubleshooting  
Problem  
Probable Cause  
Possible Solution  
1. Fill air tank or turn  
compressor on.  
2. Check air hose  
connections.  
Shears do not cut 1. Insufficient or no air  
when Trigger  
Lever pressed.  
supply.  
2. Problem or leak in  
air hose.  
3. Blade Safety Latch  
(38) is in the lock  
position.  
3. Move the Blade  
Safety Latch to  
unlock.  
Blades are not  
cutting properly.  
1. Loose Bolt (32).  
2. Blades are dull.  
1. Tighten Bolt (32).  
2. Have Blades  
sharpened by a  
qualified technician.  
3. Check air supply  
tank for 90 PSI  
3. Insufficient air  
pressure.  
pressure.  
SKU 94593  
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Page 6  
Parts List  
Item  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
Description  
Housing  
Bushing  
Spring  
Shaft  
Bumper  
Spring Plate  
Jointer  
Qty  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Item  
23.  
24.  
25.  
26.  
27.  
28.  
29.  
30.  
31.  
32.  
33.  
34.  
35.  
36.  
37.  
38.  
39.  
40.  
41.  
42.  
43.  
44.  
Description  
Qty  
1
1
1
1
1
1
1
1
1
1
1
1
2
3
1
1
2
2
2
1
1
1
Pin  
Handle Guard  
Nut  
Washer  
Left Blade  
Right Blade  
Pin  
Washer  
Guide Plate  
Bolt  
Piston  
9.  
Piston Ring  
Damping Ring  
Housing Cap  
Air Inlet  
Screw  
O-ring  
Spring  
Front Push Rod  
O-ring  
Damping Ring  
Valve Stem  
Screw  
10.  
11.  
12.  
13.  
14.  
15.  
16.  
17.  
18.  
19.  
20.  
21.  
22.  
Nut  
Pin  
Screw, M4x6L  
Screw, M4x8L  
Screw, M4x12L  
Blade Safety Latch  
Steel Ball  
Spring  
Screw, M4x6L  
Upper Valve Set*  
Trigger Valve Set*  
Blade Set* (27, 28, 29)*  
Washer  
Trigger Lever  
*
NOTE: Some parts are listed and shown for illustration purposes only and are not  
available individually as replacement parts.  
PLEASE READ THE FOLLOWING CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM  
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR  
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. 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.  
SKU 94593  
For technical questions, please call 1-800-444-3353  
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Page 7  
Assembly Drawing  
SKU 94593  
For technical questions, please call 1-800-444-3353  
Page 8  
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