MACKISSIC SC300M User manual

OWNER’S MANUAL
SC300M
SHREDDER-CHIPPER
ASSEMBLY AND OPERATING INSTRUCTIONS
.
This manual contains information concerning proper and improper operating procedures, warnings,
maintenance, trouble shooting, assembly, tips. Everyone who operates this machine should read
these instructions and be thoroughly familiar with them.
THIS MACHINE IS CAPABLE OF INFLICTING
SERIOUS INJURY IF OPERATED IMPROPERLY
- READ WARNINGS AND CAUTION LABELS -
MACKISSIC, INC. P.O. BOX 111, PARKER FORD, PA 19457-0111
PHONE: [phone] e-mail: [e-mail] Fax: [phone]
3/2018

WARNING
RULES FOR SAFE OPERATION
THIS MACHINE IS CAPABLE OF INFLICTING SERIOUS INJURY IF
OPERATED IMPROPERLY - READ WARNINGS AND CAUTIONS.
INTENDED USE
Never use your shredder-chipper for any other purpose than shredding and chipping yard and gardening products. It is
designed for this use and any other use may cause injury.
TRAINING
Read this owner’s manual carefully in it’s entirely before attempting to assemble or operate this machine. Be completely
familiar with the controls and the proper use of this machine before operating it. Failure to do so may cause serious injury
to yourself or others. Do not allow anyone to operate your machine that has not read this manual. Keep this manual in a
safe place for future and regular reference. This manual is also helpful for ordering replacement parts.
DANGER
DANGER: Rotating cutting blades. Keep hands and feet out of
inlet and discharge opening while machine is running. This machine
can CRUSH, GRIND, CUT, and SEVER parts of your body if they
enter the inlet or discharge area of your shredder-chipper.
2

DANGER: This machine can CRUSH, GRIND, CUT, and SEVER parts of your
body if they enter the inlet or discharge area of your chipper.
DANGER: Your shredder-chipper was built to be operated according to the rules for safe
operation in this manual. As with any type of power equipment, carelessness or error on
the part of the operator can result in serious injury. If you violate any of these rules, you
may cause serious injury to yourself or others.
SECTION 1: General Safety Rules
Read this Safety & Operating Instructions Manual before you use the shredder-chipper. Become familiar with the operation and
service recommendations to ensure the best performance from your machine.
Labels
Your shredder-chipper carries prominent labels as reminders for its proper and safe use. Shown below are copies of all the Safety
and Information labels that appear on the equipment. Take a moment to study them and make a note of their location
on your shredder-chipper as you set up and before you operate the unit. Replace damaged or missing Safety and Information labels
immediately.
#235451
#091-0043
#930-0007
#930-0002
#091-0381
#930-0009
#930-0010
#930-0004
3

Protecting Yourself and Those Around You
This is a high-powered machine, with moving parts operating with high energy. 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. This machine can crush, grind, cut, and
sever parts of your body if they enter the inlet or discharge area of your shredder-chipper. Always take the following precautions
when using this machine:
•Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people, their property, and
themselves.
•Always wear protective goggles or safety glasses with side shields while using the shredder-chipper to protect your eyes from
possible thrown debris.
•Avoid wearing loose clothing or jewelry, which can catch on moving parts or the material fed into the shredder-chipper.
•We recommend wearing gloves while using the shredder-chipper. Be sure your gloves fit properly and do not have loose cuffs
or drawstrings.
•Wear shoes with non-slip treads when using your shredder-chipper. If you have safety shoes, we recommend wearing them.
Do not use the machine while barefoot or wearing open sandals.
•Wear long pants while operating the shredder-chipper.
•Use ear protectors or earplugs rated for at least 20 dba to protect your hearing.
•Keep bystanders at least 100 feet away from your work area. Stop the engine when another person or pet approaches.
Safety for Children and Pets
Tragic accidents can occur if the operator is not alert to the presence of children and pets. Children are often attracted to the
machine and the shredding/chipping activity. Never assume that children will remain where you last saw them. Always follow
these precautions:
•Keep children and pets at least 100 feet from the working area and ensure they are under the watchful care of a responsible
adult.
•Be alert and turn the machine off if children or pets enter the work area.
•Never allow children to operate the shredder-chipper.
ALWAYS CHECK OIL LEVEL
BEFORE STARTING MACHINE
#940-0011
#930-0013
4

General Safety
Operating this shredder-chipper safely is necessary to prevent or minimize the risk of death or serious injury. Unsafe operation can
create a number of hazards for you. Always take the following precautions when operating this machine:
•Your shredder-chipper is a powerful tool, not a plaything. Exercise extreme caution at all times. The machine is designed to
chip wood and shred most organic materials. Do not use it for any other purpose.
•Thoroughly inspect the area in which you will be working and remove all foreign objects. Look for rope, wire, etc., and remove
these objects before shredding/chipping. Inserting these objects into the shredder-chipper hopper could damage the machine
and/or cause injury.
•Know how to stop the shredder-chipper quickly.
•Never operate your unit on a slippery, wet, muddy, or icy surface. Exercise caution to avoid slipping or falling.
•See manufacturer’s instructions for proper operation and installation of accessories.
•Never use the machine without ensuring that all guards and shields are in place.
•Never, under any conditions, remove, bend, cut, fit, weld, or otherwise alter standard parts on the shredder-chipper. This
includes all shields and guards. Modifications to your machine could cause personal injuries and property damage and will void
your warranty.
•Never use the machine with the Hopper(s) or Discharge Chute removed.
•Never place any part of your body in the shredder-chipper Hopper(s), discharge opening, or near any moving part while the
machine is running. Keep the area of discharge clear of anything that will obstruct a clear discharge. Wind can also change
discharge direction, so be aware. If it becomes necessary to push material into the shredder-chipper Hopper(s), use a small
diameter stick, NOT WITH YOUR HANDS.
•Keep your face and body back from the shredder-chipper Hopper(s) to avoid accidental bounce back of any material.
•Do not allow an accumulation of processed material to build up in the discharge area as this will prevent proper discharge and
can result in kickback from the shredder-chipper Hopper(s).
•Allow only one person to operate the shredder-chipper at any time.
•Always operate the machine from the Operator Zone (see Figure 5 on page 11). Never pass or stand on the discharge side of
the machine when the Engine is running or the Rotor is turning.
•If the machine should start making an unusual noise or vibration, shut down the Engine, disconnect the Spark Plug Wire,
keeping it away from the Spark Plug to prevent accidental starting, wait 5 minutes, then inspect for damage. Vibration is
generally a warning of trouble. Check for damaged parts and clean, repair, and/or replace as necessary.
•Never tamper with safety devices. Check their proper operation regularly.
•Never try to pick up, move, or transport the machine while the Engine is running or the Rotor is turning.
•Before performing any maintenance or inspection procedure on the shredder-chipper, shut the Engine OFF, remove the Spark
Plug Wire, and keep it away from the Spark Plug.
•Never allow people who do not understand and/or have not read this Safety and Operating Instructions Manual to use the
shredder-chipper. Allow only responsible individuals who are familiar with these rules of safe operation to use your machine.
•Never overload or attempt to shred or chip material beyond the manufacturer’s recommendation. Personal injury or damage
to the machine could result.
•While using the shredder-chipper, don't hurry or take things for granted. When in doubt about the equipment or your
surroundings, stop the machine and take the time to look things over.
•Never operate the machine when under the influence of alcohol, drugs, or medication.
•Use the machine only in daylight.
•Stay alert for hidden hazards or traffic.
•Keep all nuts and bolts tight and keep the equipment in good operating condition.
5

A Note to All Users
Under California law, and the laws of some other states, you are not permitted to operate an internal combustion engine using
hydrocarbon fuels without an Engine Spark Arrester. This also applies to operation on US Forest Lands. All shredder-chippers
shipped to California, New Mexico, and Washington State are provided with Spark Arresters. Failure of the owner or operator to
maintain this equipment in compliance with state regulations is a misdemeanor under California law and may be in violation of
other state and/or federal regulations. Contact your State Park Association or the appropriate state organization for specific
information in your area.
No list of warnings and cautions can be all-inclusive. If situations occur that are not covered by this manual, the operator must apply
common sense and operate this shredder-chipper in a safe manner.
6

Section 2: Setting Up The SHREDDER-CHIPPER
It may be helpful to familiarize yourself with the controls and features of your shredder-chipper as shown in Figure 1 before
beginning these procedures.
SHREDDER-CHIPPER Controls and Features
Tires
7

Unpacking the SHREDDER-CHIPPER
Tools and supplies needed:
•1/2" Wrench
•Hammer
•Pry Bar
•Wire Cutters or Utility Knife
•Safety Glasses
Wear Safety Glasses to protect your eyes from flying debris and Gloves to protect
your hands from sharp objects when performing these procedures.
1. Use a Hammer and Pry Bar to separate the bottom Crate Boards from the
Pallet and lift the Crate off the Pallet.
2. Cut the Straps that are securing the machine to the Pallet.
3. Use the Hand Slots in the Shredder Hopper to tilt and roll the machine from
the Pallet.
4. Remove the two Baffle Rods and Cotter Pins that go through the top of the
Baffle Plate and the one behind it (Figure 2).
5. Move the bottom of the Baffle Plate to the outside of the Pipe Spacer and
reinstall the top portion of the Plate using the Baffle Rod and Cotter Pin (Figure 3).
6. Reinstall the Baffle Rod and Cotter Pin to hold the Baffle Plate up in the
discharge position. Which holes you use depends on the discharge angle desired
when shredding/chipping.
7. Position the Chipper Hopper and secure with Flange Nuts using a 1/2" Wrench
(Figure 4).
8
Figure 4

Section 3: LUBRICATION & ENGINE START UP
FOR INFORMATION ABOUT:
❑OIL
❑FUEL
❑STARTING
❑STOPPING
❑RECOMMENDED MAINTENANCE
❑SERVICE
❑STORAGE
❑ENGINE WARRANTY INFORMATION
REFER TO THE ENGINE OWNER’S MANUAL.
THE ENGINE ON YOUR SHREDDER-CHIPPER HAS BEEN SHIPPED DRY.
BE SURE TO SERVICE THE ENGINE ACCORDING TO THE ENGINE OWNER’S
MANUAL PRIOR TO STARTING.
FAILURE TO DO SO CAN RESULT IN DAMAGE NOT WARRANTIED BY THE
ENGINE MANUFACTUROR.
WARNING: Do not fill closer than ½” from the top of the fuel tank to prevent spills and to allow for fuel
expansion. If gasoline is accidentally spilled, move the machine away from the area of the spill. Avoid
creating any source of ignition until gasoline vapors have disappeared.
CAUTION: Experience indicates that alcohol blended fuels (gasohol, ethanol, methanol) can attract moisture which leads
to separation and formation of acids during storage. Acidic gas can damage the fuel system or an entire engine while in
storage. To avoid engine problems, the fuel system should be empty before storage for periods over 30 days. For more
information, refer to the engine owner’s manual. Use fresh fuel each season. Never use engine or carburetor cleaner
products in the fuel tank or permanent damage may result.
ALWAYS CHECK OIL LEVEL PRIOR TO
STARTING THE SHREDDER CHIPPER.
9

Section 4: OPERATION
DANGER: Rotating cutting blades. Keep hands and feet out of
inlet and discharge opening while machine is running. This
machine can CRUSH, GRIND, CUT, and SEVER parts of your body
if they enter the inlet or discharge area of your shredder-chipper.
Whenever you operate your shredder-chipper, wearing gloves and safety glasses is required. If necessary to push
material into shredding chamber, use a wood stick, never hands or steel implements. At the end of this section we offer
additional cautions. Read and observe them.
As the engine ignition begins, the engine operates under no load until approximately 600 rpm, at which speed the
centrifugal clutch engages and begins driving the rotor. Proper rotor speed is in the 2300 rpm range with a plus or minus
tolerance of 200 rpm. At this speed you have four rows of hammers literally cutting or beating material until it is small
enough to pass through the 1” screen. The 1” screen retains the material within the grinding chamber long enough for the
free-swinging hammers to do their job. The number of cuts by the hammers varies with each organic material’s retention
time within the chamber and the size of the opening in the screen.
When viewed from the pulley side, the rotor runs counterclockwise. This action tends to pull materials into the shredding
chamber. Short stalks (bean plants), cobs, sod and similar materials should be fed into the hopper by a garden spade or
pitchfork. Long stalks like corn or trimmings can be best fed by hand slowly to avoid having the rotor pull in the complete
stalk, wrap it and stall. When feeding stalks or trimmings by hand, be certain to keep your hands away from the rotor and
hammers. Remember, a technique and understanding is required to successfully shred or grind the great variety of
materials which may be available to you for compost.
Branches are fed into the side chipper chute for chipping. One at a time if they are larger than 1”, several together if
smaller in diameter. Since the throat opening is 3” some side shoots or side branches may have to be trimmed from the
main stalk before chipping. Short stubs of branches may be pushed through the chipper section with the next branch.
Never assume you know where the blade is, and try to push short branches in by hand. You don’t know where it is. Be
safe, keep your hands away from the chipping blade.
How to Keep Safety First
1. When feeding material into this equipment be careful that pieces of metal, glass, rocks, cans or other
nonorganic or foreign objects are not included.
2. Do not allow an accumulation of processed material to build up under the discharge of the shredder-
chipper as this can prevent following shredded material to discharge and will result in clogging. Use a
long handled stick or spade to remove processed material build-up. DO NOT USE YOUR HAND OR
FOOT. Always shut the unit off before clearing build-up.
3. Never allow your hands or any part of your body or clothing inside the feed hopper or discharge area of
the shredder-chipper.
4. Keep all protective guards on the machine in place and in good working condition.
5. Always stand clear of the discharge area when the shredder is running.
6. Keep your face and body away from the feed hopper to avoid being struck by any material that may
bounce back. Do not overreach, keep proper balance and footing.
7. Do not transport the shredder while the engine is running.
8. Do not refuel the engine while it is hot, warm, or running.
9. Do not cover the machine while the muffler is still hot.
10

Before You Begin
•Visually check the Chipper Knife for damage each time you use the machine.
NOTE: Check for shaft movement while starting the Engine. If the shaft does
not turn, STOP the Engine and clean out the Shredder-Chipper Hopper(s) as
instructed on page 14.
•ALWAYS operate the shredder-chipper from the Operator Zones (Figure 5).
•When viewed from the Chipper Hopper side the Rotor turns in a clockwise
direction.
•NEVER assume you know where the Chipper Knife is. You do not know
where it is.
•ALWAYS stop the Engine when leaving the Operating Zone or when moving
the machine.
Shredder
Figure 5
11

Processing Material
Read and understand the warnings listed in “Section 1 General Safety Rules” before operating this shredder-chipper.
•Your shredder-chipper can process dry or green material.
•Green material will process quicker and easier than dry material.
•Soft wood processes easier than hard wood.
•Your operator experience will teach you how different materials chip/shred and how fast you can process different materials.
•Most materials process well with the standard screen provided with the shredder-chipper.
•It is best to trim off any side twigs from the main branch that you are chipping.
•When chipping branches, sometimes a tail will remain at the end of a branch. To avoid this, rotate the branch while feeding it into
the Chipper Hopper. Rotating the branch as you feed it into the machine will improve chipping performance.
•Use caution with small diameter green saplings and branches less than 1" in diameter. Chip these grouped or bundled together to
provide support for each other. If the material is 1" or larger, feed only one at a time into the Chipper Hopper.
•Make sure the shredder-chipper finishes processing material in the Hopper(s) before shutting the Engine off.
Using the Chipper Hopper
The Chipper Hopper is mounted on the side of the machine and is designed to chip the larger, heavier materials that the Shredder
Hopper isn’t designed to handle. The revolving Chipper Knife mounted on a Rotor turns branches fed into the Hopper into “chips”.
The Chipper can chip twigs and branches ranging in size from 1" to 2-1/2" in diameter. Cut your materials into manageable lengths
of no more than five or six feet long before feeding them into the Chipper Hopper.
The Chipper Hopper must be securely bolted to the side of your shredder-chipper before using the machine!
•Feed the branch into Chipper Hopper keeping the branch at the same angle as the Chipper Hopper.
•As the branch becomes short and is at the outside edge of the Chipper Hopper, finish processing it by pushing it in with the next
branch.
•Do not force material into the Chipper. If the machine does not chip well, the Chipper Knife may need sharpening or to be
replaced.
•Extremely hard knots will not process very well. Push any short stubs that have not self-fed through the Chipper, with the next
branch to be chipped.
Never throw remaining stubs or knots into the Shredder Hopper; damage will result.
•Overloading the Chipper Hopper will cause the rotor speed to decrease. If you hear the Engine RPM decreasing, stop feeding
material into the Chipper Hopper until the Engine has returned to full speed.
•NEVER allow processed material to build up within 3" of the Discharge opening. Move the shredder-chipper or the pile as needed.
Failure to do so could result in unnecessary jamming of the machine.
•To move a pile of processed material, first shut off the Engine, and use a spade, rake, or long handle tool; NEVER use your hands
or feet!
12

If you jam the machine and do not stop the Engine, it can damage the machine. This damage can be costly and not covered under
warranty. See “To Free a Jammed Flywheel” on page 14.
Using the Shredder Hopper
The Shredder Hopper is located on the top of the shredder-chipper and is the opening into which all materials to be shredded should
be fed. You can shred most organic materials. A flex guard, or blowback shield is attached to the Hopper. You must push material
past this flap using a wooden stick in order to enter the main Shredding Chamber where revolving steel Hammers do the shredding.
The Blowback Shield is an important feature; it prevents kickback of materials! Do not use your machine unless the Blowback Shield
is securely fastened in place.
•Due to the wide variety of materials that you can shred, and their very different physical characteristics, only feed limited
quantities of any material into the Shredder Hopper at first. Increase the amount and length of material if you find that the
material is processing without any difficulty. Your judgment and operator experience is very important. Be sure not to overload
the machine by feeding too much material into the Hopper at one time. If you hear the speed of the Engine decreasing, stop
feeding material into the machine at once. Do not resume feeding the machine until the Engine has returned to full speed.
•The maximum diameter of material that you can shred is 3/4". Feed any larger material through the Chipper Hopper. Material
larger than 3/4" can cause serious damage to any of the internal parts of the Shredding Chamber. Inspect the shredder-chipper
after every use for bent Hammers, missing Spacers, clogging, or damage to the Screen or any other obvious problems. If damage
occurs, the Rotor Assembly can become unbalanced causing excessive vibration. If used in this condition, damage can occur. Do
not use the machine if vibration is present. Vibration is generally a warning sign of trouble.
•You can feed several small branches into the Shredder Hopper at once providing their combined diameter is less than 3/4". Cut
branches no longer than three (3) feet to make them more manageable. Allow green materials to dry, or process in small batches
with dry materials to avoid winding around the Rotor Assembly.
•Wet materials will clog the machine easily. If clogging occurs, stop the Engine; remove the screen and process material without it.
Processing in this way will reduce the amount of reduction, but will reduce clogging.
MATERIALS BEST SUITED FOR SHREDDING
Leaves
Flowers
Corn Stalks
Roots
Soil
Palm frond tops
Grass clippings
Garden debris
Potato vines
Straw and Hay
Hedge clippings
Tomato vines
Manure
Kitchen Waste
Small branches
The Hammers within the Shredding Chamber can tug suddenly at material fed into the Shredder Hopper. Do not hold on tightly to
branches and vines, and do not feed material straight down into the Hopper with your arm pointing downward toward the opening.
Instead, keep your arms parallel to the ground and several inches above the top edge of the Hopper.
13

To Free a Jammed Rotor
Before performing any maintenance procedure or inspection, stop the Engine, wait
five (5) minutes to allow all moving parts to come to a complete stop and cool.
Disconnect the Spark Plug Wire, keeping it away from the Spark Plug.
1. Remove any material left in the Chipper and Shredder Hoppers with a wooden
stick.
2. Check the Discharge Opening for clogs. If it is clogged, clear it with a stick.
3. Also, with a stick, loosen and remove any material left in the
Shredding/Chipping Chamber.
4. Start the machine and allow any remaining material in the
Shredding/Chipping Chamber to discharge.
5. If the Shredding/Chipping Chamber does not clear and the Rotor is still
jammed, repeat the above process.
6. Be certain the Shredding/Chipping Chamber is clear before trying to process
more material into the Hopper, clogging could result in Belt or Clutch failure.
To Clean Out a Clogged Shredder
1. Remove the Baffle Plate by removing the Nut on the Baffle Rod and then
removing the Baffle Plate (Figure 6).
2. Remove the Screen by removing the Nuts on the Screen Rods and then
removing the Screen (Figure 7). Remove any debris from the Screen.
3. Remove any debris wrapped around the Hammers, Shaft or any other portion of the
Rotor Assembly (Figure 8).
4. Reposition the Screen and reinstall the Top and Lower Screen Rods. Secure the Rods
with the Nuts.
5. Reposition the Baffle Plate and reinsert the Baffle Rod. Secure the Rod with the Nut.
6. Reconnect the Spark Plug wire, start the machine, and allow any remaining material in
the Shredding Chamber to discharge.
7. If the Shredding Chamber does not clear, repeat the above process.
Be certain the Shredding Chamber is clear before trying to process more material
into the Hopper, clogging could result in Belt or Clutch failure.
Rods
Figure 8
14
Nut
Nuts

Section 4: Maintaining the SHREDDER-CHIPPER
Regular maintenance is the way to ensure the best performance and long life of your machine. Please refer to this manual and the
Engine Manufacturer's Owner's Manual for maintenance procedures. Service intervals listed in the checklist below supersede those
listed in the Engine Manufacturer's Owner's Manual.
Before performing any maintenance procedure or inspection, stop the Engine, wait five (5) minutes to allow all parts to cool.
Disconnect the Spark Plug Wire, keeping it away from the Spark Plug.
Regular Maintenance Checklist
PROCEDURE
BEFORE EACH USE
EVERY 8-10
HOURS
EVERY 40
HOURS
EVERY 100
HOURS
Check Engine Oil Level

Check General Equipment Condition

Check that the Shaft turns freely

Clean Engine Exterior & Cooling Fins

Inspect Knife for damage

Check Knife for Sharpness

Check Knife Attachment Screws

Check Rotor Hammers/Spacers for Wear

Check Side Bearing Collar Set Screws

Lubricate Side Bearings

Check Belt Tension and Condition
Break in period - once every
hour for first 5hrs

Clean Air Filter

Replace Air Filter

Change Engine Oil
1st time 5 hrs

Replace Drive Belt and Spark Plug

Reverse Rotor Hammers

15

Grease Fittings
Your shredder-chipper was greased at the Factory. The operator needs to lubricate the Chipper Side and Drive Side Bearings
periodically.
Tools and Supplies Needed:
•Flexible hose grease gun
•Grease
•Clean cloth
•5/32" Allen Wrench
•Loctite®243 (if set screws are loose)
1. Wipe all dirt, etc., from the Grease Fittings on both Bearings with a clean cloth
(Figure 9).
2. Apply no more than three pumps of quality general-purpose grease with a hand-
pumped grease gun to each Grease Fitting, one on the Chipper Side Bearing, and
one on the Drive Side Bearing (not shown). To access the Drive Side Bearing, you
will have to remove the Belt Guard (see below).
3. After greasing, check the Side Bearing Collar Set Screws (Figure 11) for tightness
with a 5/32" Allen Wrench. There are two Set Screws per Bearing. If they are
loose, reset them with Loctite®243, obtainable at most hardware stores.
Tensioning, Replacing, and Aligning the Drive Belt
Use only a factory Belt on your machine. The Belt has been thoroughly tested and
proven for many hours of use.
CHECKING AND SETTING BELT TENSION
Tools and Supplies Needed:
•Two 1/2" Wrenches
•Straight Edge
1. Remove the Belt Guard by removing the two Locknuts and four Washers
with a 1/2" Wrench (Figure 10).
NOTE: One Washer is located under the Belt Guard Bracket and one on top of
the Bracket. Make sure you install the Washers in these same positions.
2. Place a straight edge onto the full length of the Belt (Figure 11).
3. Push on the Belt with about three pounds of pressure. The Belt should
move approximately 3/8". If the distance is close to 3/8" no tension
adjustment is needed. If it is not close to 3/8" adjust per the following
directions.
4. Remove the Nut and Baffle Rod and set the Baffle Plate aside for better
access under the Engine (Figure 10).
Grease
16

5. Loosen the four Engine Bolts using two 1/2" Wrenches (Figure 12).
6. Using a 1/2" Wrench, turn the Tag Nut away from the Adjust Nut.
7. Turn the Adjust Nut in against the Frame to tighten (if Belt is too loose)
or out to loosen (if Belt is too tight) for the correct Belt tension.
8. When the Belt is at the proper tension tighten the Engine Hardware.
9. Screw the Tag Nut up to the Adjust Nut.
10. Replace the Baffle Plate and Belt Guard.
REPLACING THE BELT
Tools and Supplies Needed:
Two 1/2" Wrenches
1. Follow the disassembly steps in the previous “Checking and Setting Belt
Tension” section (steps 1 and 4 through 6).
2. Loosen the Adjust Nut to move the Engine forward until the Belt can be
removed.
3. Install the new Belt onto the Clutch and Rotor Pulley. Turn the Adjust nut
against the Frame to tighten the Belt and follow the steps that apply in the
“Checking and Setting Belt Tension” section to set Belt tension (steps 2, 3 and
7).
4. When the Belt is at the proper tension tighten the Engine Hardware.
5. Screw the Tag Nut up to the Adjust Nut.
6. Replace the Baffle Plate and Belt Guard.
CHECKING AND SETTING BELT ALIGNMENT
Tools and Supplies Needed:
•1/2" Wrench
•Straight Edge
•5/32" Allen Wrench, Snap Ring Pliers and Loctite®243*
*(if alignment is needed)
1. Remove the Belt Guard by following step 1 of the “Checking and Setting Belt
Tension” section.
2. Place one end of a Straight Edge across the face of the Rotor Pulley and the
other end near (but not touching) the Clutch (Figure 13).
3. The Straight Edge should be parallel with the Belt. If the gap between the top
portion of the Straight Edge to the Belt is equal to the gap between the bottom
portion of the Straight Edge to the Belt, no adjustment is needed (continue at step
4). If the gaps are not equal, adjustment is needed (continue to the following step
“a”):
a) Write down the difference in the gaps to use for adjustment.
b) Remove the Belt from the Rotor Pulley by following the steps as
described in the previous “Checking and Setting Belt Tension” section (steps 4
through 7).
On side face of
Figure 12
Figure 13
17

c) Remove the two Set Screws with a 5/32" Allen Wrench (Figure 14).
d) Remove the Retaining Ring with the Retaining Ring Pliers
e) Remove the Shims and Rotor Pulley from the shaft.
Note: Make sure the Shaft Key stays in the slot of the Shaft when the Pulley is removed. If it does come out of the slot, slide it
back in for assembly.
f) Place enough Shims on the Shaft to equal the measurement you wrote down.
g) Reinstall the Pulley (line up with the key on the shaft) and any remaining Shims on the outside of the Pulley. Secure with the
Retaining Ring (ensure it is locked into the groove).
h) Apply Loctite®243 to the threads of the Set Screws and reinstall them into the Pulley Hub tightly against the Shaft.
i) Install the Belt and recheck the alignment.
j) Set Belt tension as described in the “Checking and Setting Belt Tension” section.
4. Reinstall the Belt Guard.
NOTE: Check and re-tighten (if necessary) the Drive Belt after an initial break-in period of one hour.
Knife Sharpening
•You should never attempt to sharpen the Chipper Knife freehand; take the Knife to a machine shop for proper sharpening.
•It is extremely important to consistently maintain the 45-degree angle for proper performance.
•Excessive heat generated during the sharpening process will damage Knives and weaken the metal.
•How many times a Knife can be sharpened is determined by how much material needs to be taken off to sharpen or to
compensate for dents or gouges.
•A new Chipper Knife has a 5/16" measurement between the short side bevel edge and the Knife mounting holes (Figure 15).
•The knife should never be sharpened to the extent that more than 3/32" is taken off this measurement.
•Once this measurement is below 7/32" (Figure 16), or if you are unable to remove dents or gouges with these guidelines, replace
the Knife.
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Replacing the Chipper Knife
Tools and Supplies needed:
•Two 1/2" Wrenches
•3/16" Allen Wrench
•Awl
•Gloves
1. Use two 1/2" Wrenches to remove the Shredder Hopper (Figure 17).
2. Use a 1/2" Wrench to remove the Chipper Hopper.
Figure 17 3. Rotate the Rotor Assembly using a stick until the three countersunk Allen
Screws attaching the Knife to the Rotor are visible through the Chipper Hopper
Opening (Figure 18).
4. Clean out the heads of the Allen Screws with an awl or sharp tool.
5. Insert a 3/16” Allen wrench into the head of a screw and a 1/2" Wrench
on the Locknut on the inside (Figure 19) and remove the Locknut and Screw.
Tip: You may want to support the Rotor by inserting a block of wood under the
knife while loosening the Locknuts and Screws (Figure 20).
6. Repeat Step 5 for the remaining two Allen Screws.
7. Remove the dull or damaged Knife and visually inspect the Chipper
Rotor Slot and Knife mounting area and be sure they are clean. Metal burrs may
need filing so that the replacement Knife will be able to mount flush against
Figure 18 the Chipper Rotor.
8. Install a new or sharpened Knife and finger tighten the Allen Screws and
Locknuts to hold the Knife to the Rotor.
9. Using a 3/16" Allen Wrench on the Screw and a 1/2" Wrench on the
Locknut, tighten the center Screw, then tighten the outer Screw, and finally
tighten the inner Screw.
10. Double-check all three Screws for tightness one more time.
11. Reinstall the Shredder and Chipper Hoppers.
Shredder
Shredder
19

Maintaining the Shredder Hammers
When the hard steel Hammers of the Rotor Assembly become dull or round on
the cutting edge, they may be rotated or reversed.
NOTE: The Hammers have four cutting edges that may be used before
replacement is necessary. To reverse the Hammers, proceed as follows:
Tools and Part Required
•Two 1/2" Wrenches
•Hammer and Punch
1. Remove the Baffle Rod and Cotter Pin to remove the Baffle Plate (Figure 21).
2. Remove the Screen Rods and Cotter Pins to remove the Screen (Figure 22).
3. Remove the Belt Guard with a 1/2" Wrench.
4. Loosen the Access Cover Locknut with a 1/2" Wrench and rotate the round
Access Cover Plate to expose the Access Hole.
5. Rotate the Rotor Assembly to gain access to the Roll Pin at the end of the
Rod (Figure 23).
6. Drive out the Roll Pin with a punch and Hammer.
7. Align the Rod with the Access Hole.
8. Carefully remove the Rod through the Access Hole and at the same time
remove the Hammers and spacers from the Rod leaving them in the same
order as you removed them.
9. Now reverse each Hammer (end to end) by using the lower hole in the
Hammer.
10. Slide the Rod back through the Access Hole as you reinstall the Hammers and
Spacers in the same order as removed.
NOTE: Be sure you reinstall the Hammers and Spacers in exactly the same order
that they were removed. Refer to the Rotor Assembly Schematic in Chapter 6 for
the correct order.
11. Replace the old Roll Pin with a new one.
12. Repeat steps 5 through 11 for the remaining three Hammer Rods.
Tip: To remember which Hammer Rod you have reworked, it may be helpful to
mark the end of the Rods with a marker or tape.
13. Reinstall the Access Cover Plate, Belt Guard, Screen, and the Baffle Plate.
Rods
Cover
20