Safety & Operating Instructions Gravity Self-Feeding Wood Chipper WC475/475E & WC575E MacKissic Toll-free phone: (800)-348-1117 Serial No. Fax: (610)-495-5951 Website: www.MacKissic.com P/N: 950-2000 Published: 01/14/2020 Read and understand this manual and all instructions before operating or servicing this GRAVITY SELF-FEEDING WOOD CHIPPER.
Table of Contents Chapter 1: General Safety Rules..................................................................................................... 3 Chapter 2: Setting Up the GRAVITY SELF-FEEDING WOOD CHIPPER ........................................ 9 Chapter 3: Operating Your GRAVITY SELF-FEEDING WOOD CHIPPER .................................... 19 Chapter 4: Maintaining the GRAVITY SELF-FEEDING WOOD CHIPPER .................................... 25 Chapter 5: Troubleshooting ............................
Chapter 1: General Safety Rules • • • Read this Safety & Operating Manual before you use the SELF-FEEDING Wood Chipper. Become familiar with the operation and service recommendations to ensure the best performance from your machine. Thoroughly inspect the area in which you will be working and remove all foreign objects. Look for Rope, Wire, ECT., and remove these objects before chipping. Inserting these objects into the chipper hopper could damage the machine and/or cause injury.
930-0011 930-0009 930-0004 930-0008 930-0010 930-0001 091-0043 930-0003 (Highway Accessory Only) 930-0006 (Electric Start Model Only) 930-0013 4 MACKISSIC GRAVITY SELF-FEEDING WOOD CHIPPER
Protecting Yourself and Those Around You This is a high-powered machine, with moving parts operating with high energy at high speeds. You must operate the machine safely. Unsafe operation can create a number of hazards for you, as well as anyone else in the nearby area. Always take the following precautions when using this machine: • • • • • • • • • • • • • • • • Always wear protective goggles or safety glasses with side shields while chipping to protect your eyes from possible thrown debris.
Safety with Gasoline - Powered Machines Gasoline is a highly flammable liquid. Gasoline also gives off flammable vapor that can be easily ignited and cause a fire or explosion. Never overlook the hazards of gasoline. Always follow these precautions: • • • • • • • • • • • • • 6 Never run the engine in an enclosed area or without proper ventilation as the exhaust from the engine contains carbon monoxide, which is an odorless, tasteless, and deadly poisonous gas.
Road Towing Safety (For Highway Accessory Only) • • • • • • • • • Before towing, be certain the Gravity Self-Feeding Wood Chipper is correctly and securely attached to the towing vehicle and the safety chains are in place. Leave slack in the chains to allow for turning. Never allow anyone to ride on the Gravity Self-Feeding Wood Chipper. Never transport anything on the machine. Obey local, state, and federal regulations when you tow the chipper on public roads and highways.
General Safety Continued • • • • • • • • If the cutting mechanism strikes a foreign object or if your machine should start making an unusual noise or vibration, shut down the engine, wait for all moving parts to come to a complete stop (the flywheel will continue rotating for a while after the engine is shut down), disconnect spark plug wire, keeping it away from the spark plug to prevent accidental starting, then wait 5 minutes before inspecting for clogging or damage.
Chapter 2: Setting Up the GRAVITY SELF-FEEDING WOOD CHIPPER This chapter outlines assembly and a few simple steps you will need to follow to set up your new machine before you use it. It may be helpful to familiarize yourself with the controls and features of your GRAVITY SELF-FEEDING WOOD CHIPPER as shown in Figure 1 before beginning these procedures. If you have any questions at all, please feel free to contact us at www.MacKissic.
Specifications Models WC475 Manual and Electric Start Models Engine Briggs & Stratton (See Engine Manual for Engine Specifications) Briggs & Stratton Electric Start (See Engine Manual for Engine Specifications) Series XR1650 XR2100 WC575E Chipping Capacity 4-3/4" Diameter 5-3/4" Diameter Number of Chipper Knives 1 1 Chipper Knife Size 6-1/4" x 1-1/4" x 9/32" 7-1/4" x 1-1/4" x 9/32" Chipper Knife Material Heat Treated Tool Steel Heat Treated Tool Steel Adjustable Wear Plate Yes Yes Chip
Hardware Package Parts: 1 2 3 4 5 6 7 8 9 10 11 12 11 13 14 15 9 16 PART NUMBER 090-0639 090-0748 090-0475 090-0702 090-0460 090-0088 090-0460 090-0610 090-0470 090-0110 090-0461 090-0116 090-0461 090-0749 706-0924 090-0012 090-0470 090-0232 DESCRIPTION 5/16-18 THIN NYLOCK NUTS 5/16-18 X 3/4" TRUSS BOLTS 5/16-18 SAE FLATWASHERS 5/16-18 X 4-1/2" HHCS 5/16-18 NYLOCK NUTS 5/16-18 X 1" HHCS 5/16-18 NYLOCK NUTS 1/4-20 U BOLT 1/4-20 NYLCOK NUT 3/8-16 X 1" HHCS 3/8-16 NYLOCK NUT 3/8-16 X 3" HHCS 3/8-16 NYLOCK N
Installing the Tow Bar Note: For easier installation, keep the machine on the pallet and supports until the Tow Bar is installed. Tools Needed: • 7/16 Wrench • Two 9/16" Wrenches • Two 1/2" Wrenches 1. Position the Tow Bar under the Base and secure the front Bracket with two 3/8-16 x 1" Bolts and Locknuts using two 9/16" Wrenches (Figure 4). 2. Secure the Bracket at the rear of the Tow Bar to the Axle with a UBolt and two Locknuts using a 7/16" Wrench. (Figure 5). 3.
Installing the Tow Bar and Lights for the Highway Accessory Note: For easier installation, keep the machine on the pallet and supports until the Tow Bar is installed. Wires TowBar Bar Tow Figure 7 Tools and Supplies Needed: • 7/16 Wrench • Two 1/2" Wrenches • Two 3/4" Wrenches • Wire strippers/Cutters • Stiff Wire with Hooked End • Cable Ties (Supplied with machine) 1.
9. Mount a Light Bracket to both sides of the Chipper with two 5/16-18 x 3/4" Bolts and Locknuts each using two 1/2 Wrenches (Figure 12). Light Mounting Bracket 10. Attach the Lights to the mounting brackets with the Locknuts that are included on the Lights using a 7/16" Wrench. Note: The Side Light of each Light Assembly must face to the outside of the Chipper with the clear Lens facing down. 11. Secure the Wires to the Light Brackets with a Cable Tie.
Housing Stu Attaching the Hopper Assembly Note: We recommend that you have someone help you lift the Hopper in place and support it until it is secured to the Chipper. Tools Needed: • One 1/2” Wrench and One Phillips Head Screwdriver Hopper Assembly Install Hardware 1. Gather x8 5/16-18 x 3/4" Truss Head Bolts, x8 5/16-18 Thin Nylon Locknuts, and x8 5/16 SAE washers from your Bolt Bag. 2. Place the Hopper Assembly inside of the Hopper Neck. 3.
Attaching the Discharge Chute Discharge Chute Bolts, Washers and Locknuts Tools Needed: • Two 1/2" Wrenches 1. Loosen the two 4-1/2" long 5/16-18 Bolts holding the scroll. 2. Position the Discharge Chute facing away from the Hopper as shown and secure with two 4-1/2" long 5/16-18 Bolts, Washers (one Washer on Bolt side and one on Locknut side) and Locknuts using two 1/2" Wrenches (Figure 16). 3. Re-tighten the two 4-1/2" long 5/16-18 Bolts that hold the scroll from step 1.
Adding Engine Oil and Gasoline Capacities Engine See engine owner’s manual Fuel Tank Unleaded gasoline, 4 US quarts (3.79 L) Tip: To avoid confusion, we recommend leaving the caps on the gas and oil fills until you are ready to pour either gasoline or oil into the correct fill. Note: Use SAE 30 high detergent oil classified “For Service SF, SG, SH, SJ” or higher. Do not use special additives. Other types of oil could cause problems operating your machine.
4. If the oil level is low, continue adding a few ounces of oil at a time, rechecking the Dipstick until the oil reaches the fill mark (Figure 21and 21b). Be careful not to overfill. 5. Install the Dipstick completely when finished. Adding Gas 1. Remove the Gas Fill Cap and fill the Gas Tank with fresh, unleaded gas (with a minimum of 85 Octane) to approximately 1" to 1-1/2" below the top of the fill neck to allow for fuel expansion.
Chapter 3: Operating Your GRAVITY SELF-FEEDING WOOD CHIPPER This chapter covers the procedures for starting and stopping your new GRAVITY SELF-FEEDING WOOD CHIPPER and discusses basic operation features. • • • • The design of this machine is for chipping wood. Never use this machine for any other purpose as it could cause serious injury. Contact with internal rotating parts will cause serious personal injury.
Processing Material • Always wear protective goggles or safety glasses with side shields while chipping to protect your eyes from possible thrown debris. Avoid wearing loose clothing or jewelry, which might catch on moving parts or the material fed into the chipper hopper. We recommend wearing gloves while chipping. Be sure your gloves fit properly and do not have loose cuffs or drawstrings. Wear shoes with non-slip treads when using your chipper. If you have safety shoes, we recommend wearing them.
Starting the Engine (Manual Start Model) 1. Ensure that the Fuel Shut-Off is in the “ON” position to the right (Figure 25). 2. Move the Choke Control Lever to the “CHOKE” position to the left (leave in the RUN position to the right if the engine is already warm). 3. Move the Throttle Control Lever to about half way between Slow (turtle) and Fast (rabbit) position. 4. Pull the slack out of the Starter Cord until you feel resistance, then pull quickly.
Connecting the Chipper to your Tractor 1. Lift the Chipper Tow Bar onto the Tractor Hitch and install the Hitch Pin and Hitch Clip to secure it (Figure 27). 2. Pull the Hitch Clip from the Pin and pull the Pin from the Support Leg and Tow Bar (Figure 28). Clevis ClevisPin Pin Tow Hitch Tow Hitch Assembly Assembly 3. Rotate the Support Leg to the up (transport) position, align the holes in the Tow Bar and Leg, reinstall the Pin and secure with the Hitch Clip (Figure 29).
6. For extra safety and security, you may want to purchase a Lock or Lock Pin to install into the Latch Assembly of the Tow-Hitch Package (Figure 32). 7. Connect the Wire Harness Connector to your Tow Vehicle and ensure that your lights on the Chipper are working properly. Lock or Lock Pin Avoid death or serious injury. Do not exceed 45 mph towing this machine. Making sure the chipper is securely attached to the vehicle is the responsibility of the owner/operator.
To Free a Jammed Flywheel Shut down the Engine (The flywheel will continue to rotate for a while after the engine is shut off), Wait 5 minutes for the engine to cool and all moving parts to come to a complete stop, remove spark plug wire and disconnect the negative battery cable before moving or working on the chipper. Tools Needed: • Two 1/2" Wrenches • 5/16 Wrench • Phillips Head screwdriver Never pry against the Scroll Weldment when removing the Deflector or Discharge Chute or at any other time.
Chapter 4: Maintaining the GRAVITY SELF-FEEDING WOOD CHIPPER This chapter covers regular maintenance procedures that will ensure the best performance and long life of your GRAVITY SELF- FEEDING CHIPPER. For engine maintenance, please refer to the Engine Owner’s Manual that came with your machine. Service intervals listed in the checklist below supersede those listed in the Engine Owner’s Manual.
Inner Guard Inner Guard Belt Guard Grease Fittings Your SELF-FEEDING CHIPPER was greased at the Factory. The operator needs to periodically lubricate the two Bearings of the Chipper Assembly. Tools and Supplies needed: Screws Locknut Locknut and and Washer Washer Bolt, Washer, Washer Bolt, and Locknut and Locknut Figure 37 • • • • • • Two 1/2" Wrenches Flexible hose grease gun Lithium grease Clean cloth 1/8" Allen Wrench Loctite 243 1.
Removing and Replacing the Engine Oil Tools and Supplies Needed • • • • SAE 30 HD Oil 12mm Wrench Suitable container for used oil Rags Note: Drain the oil when the engine is warm. Warm oil drains quicker and more completely. 1. Position a suitable oil receptacle under the engine oil Drain Plug and remove the Engine Oil Check/Fill Cap (Figure 40a or 40b). 2. Remove the Oil Drain Plug from the Engine Block with a 12mm Wrench. Allow the used oil to drain completely, and then replace the Oil Drain Plug.
Clutch Pulley 7. Remove the Belt from the Clutch and Sheave (Figure 44). INSTALLING AND ADJUSTING THE BELT Note: The Belt Tensioning Adjusting Bolt may need to be loosened up more per the previous instructions “Removing the Belt” to enable you to install a new Belt. 1. Install the new Belt onto the Sheave and Clutch. 2. Use a 1/2" Wrench to adjust the Belt Tensioner until the Belt is not sagging but not too tight (Figure 43). Clutch Pulley Belt 3.
Figure 45b: WC575E Model 5. Place a Straightedge along the Belt (over the Clutch and Sheave) and push down firmly on the Belt to measure the deflection from the Straightedge to the Belt with a tape measure (Figure 46). 6. The measurement should be approximately 3/8" with approximately 10 pounds of force applied to it. 7. If the measurement is not correct, loosen the Engine Bolts and tighten or loosen the Adjusting Nut as needed (Figure 42). 8.
VISUAL Inspection of the Chipper Knife (Before every use) and Wear Plate (minimum every 25 hours) Routinely check the wear plate for a sharp square edge. Using a rounded or chipped wear plate will decrease performance and cause excessive vibration that will cause damage to the GRAVITY SELF-FEEDING WOOD CHIPPER and make chipping difficult for the operator. Routinely check the chipper knife for sharpness.
Removing and Replacing the Chipper Knife Tools Needed: • 7/16" Wrench • 1/2" Socket with extension • 3/16" Allen wrench • Awl or Sharp Tool • Gloves 1. 2. Loosen the Locknuts that secure the rear Access Cover with a 7/16" Wrench (Figure 50). Move the Cover over to align the larger portion of the hole with the Locknuts and remove the Cover.
Checking and Adjusting the Knife to Wear Plate Gap When you replace the Knife or Wear Plate you must check and set the clearance between the Knife and Wear Plate. Set this clearance or gap to 1/16" by using the Gap Tool that is supplied with the Chipper and with a new Knife kit. If the gap between the Wear Plate and the Knife is not set correctly, you will have excessive vibration when chipping and the Knife will seem to be dull. The Wear Plate should have a square edge and be free of dents or gouges.
Chipper Knife Sharpening • You should never attempt to sharpen the Chipper Knife freehand. • It is extremely important to consistently maintain the 45-degree angle for proper performance (Figure 56). • Excessive heat generated during the sharpening process will damage Knives and weaken the metal. Be sure not to overheat the Knife during sharpening because it will shorten the life of the Knife. • Take the Chipper Knife to a machine shop for proper sharpening.
Wear Plate Sharpening File this edge flat The Wear Plate edges become rounded and chipped during use and must be squared off to ensure efficient operation. Tools Needed: • Flat File 1. Secure the Wear Plate in a vise. Wear Plate Front View End View 2. File the edge of the Wear Plate to take out any nicks and to square rounded edges (Figure 58).
4. Remove the Tire and replace it with a new wheel assembly. 5. Screw the Castle Nut onto the Axle and tighten it with an adjustable wrench to seat the Bearings (Figure 61). 6. Back the Castle Nut off and then snug it up to the Bearing lightly. 7. Insert a Cotter Pin through the slots of the Castle Nut and into the hole in the Axle. 8. Bend the ends of the Cotter Pin with Needle nose Pliers to secure it. 9.
Installing a new Clutch Assembly Clutch Clutch Bolt, Lock Washer and Flat Washer Figure 63 3. 4. 5. 6. 7. 8. Note: If a Clutch part malfunctions, it could jeopardize the integrity of other Clutch components. If you have problems with the Clutch, a Clutch Kit is available, but we recommend replacing your Clutch as a complete assembly. Tools and Supplies Needed: • 5/8" Wrench or Air Wrench and Socket • Anti-seize compound 1.
Recycling a Used Battery Please dispose of your used batteries responsibly by recycling them. Call your local Solid Waste Management District or your local waste handler to locate the collection site nearest you. Some collection sites recycle batteries year-round; others collect them periodically. You can also visit the Website of Earth 911 for more information (www.earth911.org). Once there, click the Municipal HHW link under Hazardous Household Waste, and enter your zip code.
Chapter 5: Troubleshooting Most problems are easy to fix. Consult the Troubleshooting Table below for common problems and their solutions. If you continue to experience problems, contact us at www.MacKissic.com or call (800)348-1117 for support.
Troubleshooting Table (continued) Shut down the Engine (The flywheel will continue to rotate for a while after the engine is shut off), Wait 5 minutes for the engine to cool and all moving parts to come to a complete stop, remove spark plug wire and disconnect the negative battery cable before moving or working on the chipper. SYMPTOM POSSIBLE CAUSE Chipping action seems too slow or flywheel stalls. The engine speed is too slow causing the belt to slip. Run the engine at full throttle.
Common Engine Answers Shut down the Engine (The flywheel will continue to rotate for a while after the engine is shut off), Wait 5 minutes for the engine to cool and all moving parts to come to a complete stop, remove spark plug wire and disconnect the negative battery cable before moving or working on the chipper. Oil Recommendations: To optimize engine performance, use Warranty Certified Briggs & Stratton Small Engine Oil.
Shut down the Engine (The flywheel will continue to rotate for a while after the engine is shut off), Wait 5 minutes for the engine to cool and all moving parts to come to a complete stop, remove spark plug wire and disconnect the negative battery cable before moving or working on the chipper. Spark Plug Information: Engine Model Spark Plug Part Number (B&S) Spark Plug Gap Spark Plug Torque WC475 & WC475E XR1650 Series 798615 0.030 in (0.76 mm) 275 lb-in (31 Nm) WC575EE XR2100 Series 798615 0.030 in (0.
Chapter 6: Chipper Accessories Shut down the Engine (The flywheel will continue to rotate for a while after the engine is shut off), Wait 5 minutes for the engine to cool and all moving parts to come to a complete stop, remove spark plug wire and disconnect the negative battery cable before moving or working on the chipper.
OPERATION Extended Top-Discharge Chute Adjusting the Extended Top-Discharge Chute Discharge Direction: 1. Pull the Hitch Clip and remove the Locking Pin (Figure 66). 2. Rotate the Extended Top-Discharge Chute to the direction desired. Note: The Extended Top-Discharge Chute has a range of motion of 180˚ that spans the front and both sides of the Chipper. There are 11 different hole settings at 18˚ increments that you can use.
Chapter 7: Parts List and Schematic Diagrams Parts List – Drive Assembly Note: Part numbers listed are available through MacKissic.
Schematic – Drive Assembly 45 MACKISSIC GRAVITY SELF-FEEDING WOOD CHIPPER
Parts List - Chipper Basic Assembly Note: Part numbers listed are available through MacKissic.
Schematic – Chipper Basic Assembly 47 MACKISSIC GRAVITY SELF-FEEDING WOOD CHIPPER
Parts List – Base and Wheels Assembly Note: Part numbers listed are available through MacKissic.
Schematic – Base and Wheels Assembly 49 MACKISSIC GRAVITY SELF-FEEDING WOOD CHIPPER
Parts List– Base and Wheels Assembly – Road Tow Note: Part numbers listed are available through MacKissic.
Schematic – Base and Wheels Assembly – Road Tow 51 MACKISSIC GRAVITY SELF-FEEDING WOOD CHIPPER
Parts List – Hopper Assembly Note: Part numbers listed are available through MacKissic.
Schematic – Hopper Assembly 53 MACKISSIC GRAVITY SELF-FEEDING WOOD CHIPPER
Parts List – High Discharge Accessory NOTE: Part numbers listed are available through MacKissic.
Notes: 55 MACKISSIC GRAVITY SELF-FEEDING WOOD CHIPPER
Notes: CONTACT US AT www.MacKissic.
Daily Checklist for the GRAVITY SELF-FEEDING WOOD CHIPPER Shut down the Engine (The flywheel will continue to rotate for a while after the engine is shut off), Wait 5 minutes for the engine to cool and all moving parts to come to a complete stop, remove spark plug wire and disconnect the negative battery cable before moving or working on the chipper. To help maintain your GRAVITY SELF-FEEDING WOOD CHIPPER for optimum performance, we recommend you follow this checklist each time you use your Chipper.
