DR Power Equipment DR 9.5 Quick start guide

Read and understand this manual and all instructions before operating the DR 9.5 CHIPPER SHREDDER.
DR®9.5 CHIPPER SHREDDER
SAFETY & OPERATING INSTRUCTIONS
Serial No.
Order No.
DR Power Equipment
Toll-free phone: 1-800-DR-OWNER (376-9637)
Fax: [phone]
Website: www.DRpower.com
Electric Start
Model shown

2DR® 9.5 Chipper Shredder
This indicates a hazardous situation, which, if not avoided, could result in death or serious injury.
Table of Contents
Chapter 1: General Safety Rules............................................................................................................................................................ 3
Chapter 2: Setting Up The DR 9.5 Chipper Shredder........................................................................................................................... 7
Chapter 3: Operating the DR 9.5 Chipper Shredder ............................................................................................................................ 13
Chapter 4: Maintaining The DR 9.5 Chipper Shredder ........................................................................................................................ 17
Chapter 5: Troubleshooting .................................................................................................................................................................. 24
Chapter 6: Parts Lists and Schematic Diagrams.................................................................................................................................. 26
Conventions used in this manual
Serial Number and Order Number
A Serial Number is used to identify your machine and is located on the Serial Number Label on your machine. An Order Number
is used to check and maintain your order history and is located on the packing slip. For your convenience and ready reference,
enter the Serial Number and Order Number in the space provided on the front cover of this manual.
Additional Information and Potential Changes
DR Power Equipment reserves the right to discontinue, change, and improve its products at any time without notice or obligation
to the purchaser. The descriptions and specifications contained in this manual were in effect at printing. Equipment described
within this manual may be optional. Some illustrations may not be applicable to your machine.
This information is important in the proper use of your machine. Failure to follow this instruction could result in damage to
your machine or property.
This indicates a hazardous situation, which, if not avoided, could result in minor or moderate injury.
This indicates a hazardous situation, which, if not followed, will result in death or serious injury.

CONTACT US AT www.DRpower.com 3
Read this Safety & Operating Instructions Manual before you use the DR 9.5 Chipper Shredder. Become familiar with the
operation, service, loading/unloading, and storage recommendations to ensure the best performance from your machine. If you
have any questions or need assistance, please contact us at www.DRpower.com or call Toll-Free 1-800-DR-OWNER (376-9637)
and one of our Technical Support Representatives will be happy to help you.
Chapter 1: General Safety Rules
Labels
Your DR 9.5 Chipper Shredder 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 Chipper Shredder as you set up and before you operate the unit. Replace damaged or missing Safety and Information
labels immediately.
#39283
#39282
#18887
#13758

4DR® 9.5 Chipper Shredder
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 Chipper Shredder. 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 Chipper Shredder 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 Chipper Shredder.
We recommend wearing gloves while using the Chipper Shredder. Be sure your gloves fit properly and do not have loose
cuffs or drawstrings.
Wear shoes with non-slip treads when using your Chipper Shredder. 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 Chipper Shredder.
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.
Protecting Yourself and Those Around You
Safety for Children and Pets
Safety with Gasoline - Powered Machines
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 chipping/shredding 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 Chipper Shredder.
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:
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.
Store all fuel and oil in containers specifically designed and approved for this purpose and keep away from heat and open
flame, and out of the reach of children.
Replace rubber Fuel Lines and Grommets when worn or damaged and after 5 years of use.
Fill the Gasoline Tank outdoors with the Engine off and allow the Engine to cool completely. Don't handle gasoline if you or
anyone nearby is smoking, or if you're near anything that could cause it to ignite or explode. Reinstall the Fuel Tank Cap and
Fuel Container Cap securely.
If you spill gasoline, do not attempt to start the Engine. Move the machine away from the area of the spill and avoid creating
any source of ignition until the gas vapors have dissipated. Wipe up any spilled fuel to prevent a fire hazard and properly
dispose of the waste.

CONTACT US AT www.DRpower.com 5
To safely store, allow the Engine to cool completely before moving into any enclosure. Never store a machine that has gas in
the tank, or a Fuel Container, near an open flame or spark such as a water heater, space heater, clothes dryer or furnace.
Never make adjustments or repairs with the Engine running. Shut down the Engine, disconnect the Spark Plug wire, keeping
it away from the Spark Plug to prevent accidental starting, wait 5 minutes before making adjustments or repairs.
Never tamper with the Engine’s Governor setting. The Governor controls the maximum safe operation speed and protects
the Engine. Over-speeding the Engine is dangerous and will cause damage to the Engine and to the other moving parts of the
machine. If required, see your authorized dealer for Engine governor adjustments.
Keep combustible substances away from the Engine when it is hot.
Never cover the machine while the Muffler is still hot.
Do not operate the Engine with the Air Cleaner or the Carburetor Air Intake Cover removed. Removal of such parts could
create a fire hazard. Do not use flammable solutions to clean the Air Filter.
The Muffler and Engine become very hot and can cause a severe burn; do not touch.
Operating this Chipper Shredder 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 Chipper Shredder 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 chipping/shredding. Inserting these objects into the Chipper Shredder Hopper could damage the
machine and/or cause injury.
Know how to stop the Chipper Shredder quickly; see “Stopping the Engine” in Chapter 3.
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. Only use accessories approved by DR
Power Equipment.
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 Chipper Shredder. 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 Chipper Chute, Shredder Hopper, Blowback Guards, or Discharge Guard removed.
Never place any part of your body in the Chipper Chute, Shredder Hopper, 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 Chipper Chute or Shredder
Hopper, use a small diameter stick, NOT YOUR HANDS.
Keep your face and body back from the Chipper Chute and Shredder Hopper 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.
Allow only one person to operate the Chipper Shredder at any time.
Always operate the machine from the Operator Zone (see Figure 14 on page 12). Never pass or stand on the discharge side
of the machine when the Engine is running or the Flywheel 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.
Safety with Gasoline - Powered Machines (Continued)
General Safety

6DR® 9.5 Chipper Shredder
California Proposition 65:
Engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other
reproductive harm.
This product contains or emits chemicals known to the State of California to cause cancer, birth defects, and other
reproductive harm.
General Safety (continued)
California Proposition 65
A Note to All Users
Under California, Washington, New Mexico 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 arrestor. This also applies to operation on US Forest Lands.
If you live in a location that requires a Spark Arrestor please call us at [phone] and we will provide one free of charge.
Failure of the owner or operator to maintain their equipment in compliance with state regulations is a misdemeanor 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 DR 9.5 Chipper Shredder in a safe manner. Contact us at www.DRpower.com or call Toll
Free: 1-800-DR-OWNER (376-9637) for assistance.
Never try to pick up, move, or transport the machine while the Engine is running or the Flywheel is turning.
For safe loading up ramps carefully PULL the machine with the Shredder Hopper hand holds. For safe unloading down
ramps, guide the machine from behind with the hand holds so it goes down the ramps and you follow.
Before performing any maintenance or inspection procedure on the Chipper Shredder, shut the Engine OFF, wait 5 minutes
for machine to cool, remove the Spark Plug Wire keeping 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
Chipper Shredder. Allow only responsible individuals who are familiar with these rules of safe operation to use your machine.
Never overload or attempt to Chip or Shred material beyond the manufacturer’s recommendation. Personal injury or damage
to the machine could result.
While using the Chipper Shredder, 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.

CONTACT US AT www.DRpower.com 7
Figure 1
Chapter 2: Setting Up The DR 9.5 Chipper Shredder
It may be helpful to familiarize yourself with the controls and features of your DR 9.5 Chipper Shredder as shown in Figure 1
before beginning these procedures. If you have any questions at all, please feel free to contact us at www.DRpower.com.
DR 9.5 Chipper Shredder Controls and Features
Pneumatic
Tires
Chipper Chute
Shredder
Hopper
9.5 FT-LBS Torque
Briggs &Stratton Engine
Chipper Chute
Guard
Discharge
Deflector
Starter
Handle
Fuel Shut-Off
Valve
Choke
Lever
Throttle Leve
r
Fuel Fil
l
Oil Drain
Oil Fil
l
Muffle
r
A
ir Filte
r
Electric Start Battery
(Under Base)
Electric Start
Key Switch

8DR® 9.5 Chipper Shredder
Specifications
Engine Briggs & Stratton
Ft-Lbs Torque 9.50
Oil Capacity 20 oz.
Fuel Tank Capacity 0.8 Gallons
Starting Pull Cord (Manual Start), Key (Electric Start)
Chipping Capacity 3" Diameter Max Branches
Shredding Capacity 1/2" Diameter Max Woody Material
Chipper Knife 4-1/8"x 1-1/4" x 9/32" Thick
Shredding Hammers 8 Hardened Steel, 4 Flat and 4 J
Drive Direct Mount Flywheel/Hammermill
Wheels 9/350 x 4, 4 Ply, Pneumatic
Unit Weight 126 pounds (M/S), 152 pounds (E/S)
Unit Dimensions 31-7/8" x 26-7/8" x 44-7/8" H
Parts Supplied:
Manual Start Power Unit Parts (Figure 2a and list below)
- 9.5 Chipper Shredder Power Unit
- Product Pack:
--Safety and Operating Instructions Manual
--Engine Manual
--Hardware Bag
Electric Start Power Unit Parts (Figure 2b and list below)
- 9.5 Chipper Shredder Power Unit
- Leg
- Product Pack:
--Safety and Operating Instructions Manual
--Engine Manual
--Hardware Bag
Manual Start Product Pack Contents (Figure 3a and List below):
Item Part# Description Qty
1 .............33332 .......Nut, Nylon Lock, Flange, 5/16-18......................12
2 ............. 33804 .......Washer, .344" x .88" x .12".................................4
3 ............. 33331.......Nut, Nylon Lock, Flange, 1/4-20........................7
4 ............. 36503 .......Screw, Button HD Socket, 1/4-20 x 5/8"...........4
5 ............. 35023 .......Bolt, Hex Flange, 5/16-18 x .75" ........................4
Electric Start Product Pack Contents (Figure 3b and List below):
Item Part# Description Qty
1 ............. 33332 .......Nut, Nylon Lock, Flange, 5/16-18......................13
2 ............. 11241 .......Washer, Flat, 5/16" USS, ZP..............................1
3 ............. 10147 .......Bolt, HCS, 5/16-18 X 2-1/4", GR5, ZP ...............1
4 ............. 33804 .......Washer, .344” x .88” x .12”.................................4
5 ............. 38936 .......Support, Leg .......................................................1
6 ............. 39284 ....... Cap, Tube, 7/8" ..................................................1
7 ............. 33331.......Nut, Nylon Lock, Flange, 1/4-20........................7
8 ............. 36503 .......Screw, Button HD Socket, 1/4-20 x 5/8”...........4
9 ............. 35023 .......Bolt, Hex Flange, 5/16-18 x .75” ........................4
Figure 3b
2 5
1
9
4
7
8
3
6
Figure 3a
3
4
1
5
2
9.5 Chipper
Shredder
Power Unit
Product
Pac
k
Figure 2a
9.5 Chipper Shredde
r
Power Unit
Product
Pac
k
Figure 2b
Leg

CONTACT US AT www.DRpower.com 9
Common Parts (Figure 4 and list below)
- Shredder Hopper
- Chipper Chute
- Collection Bag
- Shredder Guard & Bracket Assembly
- Chipper Guard & Bracket Assembly
- Discharge Deflector
Assembly
Tools needed:
1/2" Wrench
5/32" Allen Wrench
7/16" Wrench
3/8" Wrench
2 X 4 Block (Electric Start Model)
Attaching the Shredder Hopper and Hammermill Housing
The Electric Start Power Unit does not come with the Leg installed. Therefore, a
2 X 4 Block will need to be positioned under the flange of the Flywheel Housing
to hold it upright (Figure 5). The Manual Start Power Unit can be positioned
upright onto the preinstalled Leg.
1. Remove the two shipping nuts that are temporarily securing the
Hammermill Housing to the Power Unit using a 1/2" Wrench (Figure 6).
Discard the nuts.
2. Position the larger end of the Shredder Hopper on a flat surface and set the
Hammermill Housing over the Shredder Hopper (Figure 7). Secure with
four 1/4-20 Button Head Screws on the inside and 1/4-20 Locknuts on the
outside using a 5/32" Allen Wrench for the Screws and 7/16" Wrench for
the Locknuts.
Note: Make sure the Locknuts installed in step 2 are on the outside and the Button
Head Screws on the inside.
Adjust the Shredder Hopper and Hammermill Housing as you tighten the
hardware to make sure the back side of the Hopper is flush to the flange of
the Housing.
2 X 4 Bloc
k
Figure 5
Flywheel
Housing
Hammermill
Housing
Figure 7
1/4-20 Button
Head Screws
and Locknuts
Shredder
Hopper
Flange
Hammermill
Housing
Figure 6
Shipping
Nuts
Chipper Chute
Figure 4
Shredder
Hopper
Discharge
Deflector
Shredder
Guard and
Bracket
A
ssemb
l
y
Chipper Chute Guard
and Bracket Assembly
Collection
Bag

10 DR® 9.5 Chipper Shredder
Figure 9
Shredder
Hopper
5/16-18 Flange
Locknut
s
Flywheel Housin
g
Bracket
Figure 11
Shredder Guard
and Bracket
A
ssembly
1/4-20
Locknuts
Shredder
Hopper
5/16-18
Flange
Locknuts
Flywheel Housing
Bracket
3. Position the Hammermill Housing/Shredder Hopper Assembly onto the
seven studs of the Flywheel Housing (Figure 8). The two studs at the back
of the Shredder Hopper will go through slots in the Flywheel Housing
Bracket (Figure 9).
4. Check the fit between the Hammermill Housing Flange to the Flywheel
Housing (Figure 8). If there are any noticeable gaps, continue to step 5. If
there are no noticeable gaps, go to step 6.
5. Remove the Hammermill Housing/Shredder Hopper Assembly, loosen the
hardware installed in step 2 and adjust the Hammermill Housing and
Shredder Hopper to align better with the Flywheel Housing. Retighten the
hardware and return to step 3.
6. Manual Start Model - Secure the Hammermill Housing/Shredder Hopper
Assembly with nine (seven in front and two in back) 5/16-18 Flange
Locknuts using a 1/2" Wrench (Figure 8 and 9).
Electric Start Model –
Note: When installing the Hammermill Housing for the Electric Start
model, do not install the two Locknuts where the Leg will be attached
(Figure 10) until the machine can be tipped back and supported as
described.
Secure the Hammermill Housing/Shredder Hopper Assembly with seven
(five in front and two in back) 5/16-18 Flange Locknuts using a 1/2"
Wrench (Figure 8 and 9).
Tip the machine back and support the Shredder Hopper with a Jack Stand
under the Hopper (Figure 10).
Position the Leg onto the lower portion of the Hammermill Housing and
secure the Leg with two 5/16-18 Flange Locknuts using a 1/2" Wrench.
7. Install the Shredder Hopper Guard and Bracket Assembly with three 1/4-20
Flange Locknuts using a 7/16" Wrench (Figure 11).
Leg
Figure 10
Hammermill
Housing
Figure 8
5/16-18
Flange
Locknuts
Flywheel
Housing
Hammermill
Housing
Flange

CONTACT US AT www.DRpower.com 11
Discharge
Deflector
Figure 13
5/16-18 x .75 Bolts
and Washers
Attaching the Chipper Chute:
Note: In the next step the 1/4-20 Bolts and Locknuts are pre-installed on the Guard
Assembly to keep the parts in the correct order.
1. Using a 7/16" on the Locknut and 3/8" wrench on the Bolt, remove a
Locknut from one of the Chipper Chute Guard Bolts, position it in the
Chipper Chute, and loosely reinstall the Locknut (Figure 12). Repeat for the
second Locknut. Fully tighten both Locknuts.
2. Attach the Chipper Chute onto the Housing Studs and secure with three
5/16-18 Flange Locknuts using a 1/2" Wrench.
Attaching the Discharge Deflector:
1. Secure one side of the Discharge Deflector at the two mounting locations
with 5/16-18 X .75 Bolts and .344" x .88" x .12" Washers using a 1/2"
Wrench (Figure 13).
2. Fold the Discharge Deflector over and attach the other side as in step 1.
Note: Tighten the Bolts just until the rubber guard begins to deform. No need to
over tighten.
Adding Oil and Gasoline
Engine Oil SAE 30: above 50 degrees F; 10w-30: 10-90 degrees F; 5w-30:
30 degrees F or below
Fuel Unleaded gasoline
Note: Use only the recommended high detergent Engine oil. Other types of oil could cause problems operating your machine. Please
refer to your Engine Owner’s Manual for more detailed oil information.
Chipper Chute
Figure 12
5/16-18 Flange
Locknuts
Chipper
Chute
Guard
Bracket
1/4-20 Bolts
and Locknuts
You MUST add oil before starting the Engine. This machine is shipped without oil. Traces of oil may be in the reservoir from
factory testing, but you MUST add oil before starting the Engine. Fill the reservoir slowly, checking the level frequently to
avoid overfilling.
To get an accurate reading when checking the oil level:
- The Engine MUST be level.
- Refer to the Engine Manual for detailed information before performing the following procedures.

12 DR® 9.5 Chipper Shredder
1. Position the machine so the Engine is level. Remove the Oil Fill/Dipstick
(Figure 14).
2. Initially add 12 oz. of the oil recommended by the Engine Manufacturer.
Wait one minute for the oil to settle.
3. Check the Oil level on the Dipstick as described in the Engine Manual.
4. Continue adding a few ounces of oil at a time, rechecking the level until the
oil reaches the full level as indicated in the Engine Manual. Be careful not
to overfill.
5. Replace the Oil Fill/Dipstick when full.
6. Remove the Fuel Fill Cap and fill the Fuel 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. Be careful not to overfill.
Reinstall the Fuel Fill Cap before starting the Engine. See your Engine
Owner’s Manual for more detailed information.
Note: To refill the Fuel Tank, turn the Engine OFF, and let the Engine cool at least
five minutes before removing the Fuel Fill Cap.
Check the Tire Pressure
Tools Needed:
Tire Pressure Gauge
Air Compressor or Hand Pump
1. Remove the Valve Stem Protective Cap (Figure 15) and check the Tire
pressure with a Tire Pressure Gauge.
2. Check the manufacturers recommended pressure that is stamped on the
side of the Tire.
3. If the pressure is too low, add air through the Valve Stem with an Air
Compressor or Hand Pump.
4. Replace the Valve Stem Protective Cap when finished.
Connect the Battery Wires (Electric Start Model)
Tools Needed:
1/2" Wrench
We ship all Electric-Starting Chipper/Shredders with the green negative Battery
wire disconnected. This prevents the Battery from discharging during shipment.
You must connect the Battery wire before using your machine.
1. Remove any protective Cap that may be on the Battery Terminals from
shipping.
2. Remove the Bolts securing the Battery Strap using a 1/2" Wrench and
carefully lower the Battery (Figure 16).
3. Connect the green Negative Wire to the Negative (black)Terminal.
4. Reinstall the Battery and Strap.
Figure 16
Green Negative
Battery Wire
Battery
Bracket
Bolt
Base
Fuel Fill
Figure 14
Oil
Fill
/
Di
p
stic
k
Valve Stem
Protective Cap
Figure 15
Do not over inflate the Tires. Inflate to the manufacturers recommended
pressure.

CONTACT US AT www.DRpower.com 13
Read and understand the warnings listed in “Chapter 1 General Safety Rules” before operating this Chipper Shredder.
Chapter 3: Operating the DR 9.5 Chipper Shredder
This chapter covers the procedures for starting and stopping your new DR 9.5 Chipper Shredder and discusses basic operation
features. It may be helpful to better familiarize yourself with the features of your Chipper Shredder by reviewing Figure 1 in
Chapter 2 before beginning the steps outlined in this chapter.
Before Starting
Check the Oil and Fuel level every time you use the DR 9.5 Chipper Shredder.
Ensure the Fuel Shut-Off Valve is moved to the right in its OPEN position
(Figure 17).
Check the Shredder Hopper, Chipper Chute, and Discharge Guard and
remove any debris buildup from the machine as described in “To Free a
Clog” on page 16.
Starting the Engine (Manual Start Model)
1. Move the Choke Control Lever to the left to the Choke position (Figure 17)
(leave in the Run position to the right if the Engine is already warm).
2. Move the Throttle to the left, FAST position.
3. Grasp the Recoil Starter Handle and slowly pull until you feel resistance,
then pull the cord rapidly to start the Engine. One or two pulls will usually
start the Engine.
4. As the Engine warms up, slowly adjust the Choke to the right towards the
Run position. Wait until the Engine runs smoothly before each Choke
adjustment.
5. When the Engine is warmed up and running smoothly, ensure that the
Choke is fully in the Run position to the right.
Note: The Throttle should always be fully to the left when Chipping/Shredding.
Starting the Engine (Electric Start Model)
1. Move the Choke Control Lever to the left to the Choke position (Figure 17)
(leave in the Run position to the right if the Engine is already warm).
2. Move the Throttle to the left, FAST position.
3. Rotate Key to the Start position until the Engine starts, then release.
4. The Key will return to the Run position and the Engine will continue to
run.
5. As the Engine warms up, slowly adjust the Choke to the right towards the
Run position. Wait until the Engine runs smoothly before each Choke
adjustment.
6. When the Engine is warmed up and running smoothly, ensure that the
Choke is fully in the Run position to the right.
Note: The Throttle should always be fully to the left when Chipping/Shredding.
Fuel Shut-
Off Valve
Choke
Control
Lever
Throttle Control Leve
r
Recoil Starter
Handle
Figure 17
Key Switch
(Electric Start)

14 DR® 9.5 Chipper Shredder
Stopping the Engine (Manual Start Model)
Move the Throttle Control Lever all the way to the right past the SLOW position to the “STOP” position (Figure 17).
Note: Close the Fuel Shut-Off Valve when transporting or storing the DR 9.5 Chipper Shredder.
Stopping the Engine (Electric Start Model)
Turn the Key to the Stop position (Figure 17). Remove the Key for safety.
Note: Close the Fuel Shut-Off Valve when transporting or storing the DR 9.5 Chipper Shredder.
Before You Begin
Visually check the Chipper Knife for damage each time you use the machine.
ALWAYS operate the DR 9.5 Chipper Shredder from the Operator Zones
(Figure 18).
When viewed from the Chipper Chute side the Flywheel 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.
Using the Chipper Chute
The Chipper Chute is designed to chip thicker materials that the Shredder
Hopper isn’t designed to handle. The revolving Chipper Knife mounted on a
Flywheel turns branches fed into the Chute into “chips”. The Chipper can chip
twigs and branches ranging in size from 1/2" to 3" in diameter. Cut your
materials into manageable lengths before feeding them into the Chipper Chute.
The Chipper is not self-feeding. Hold onto and slowly feed material into the Chipper Chute while paying attention to the engine
speed. Do not force material or allow material to be pulled too quickly into the Chipper.
Larger diameter hardwood or extremely hard knots may not process as well as other materials. Discard larger diameter or
harder branch stubs before they become too short to control their feed rate.
Overloading the Chipper Chute will cause the Engine speed to decrease. If the Engine bogs down, stop feeding material into
the Chipper Chute and wait until the Engine returns to full speed before continuing.
Your DR 9.5 Chipper Shredder can process dry or green material. Green material will process quicker and easier than dry
material. Soft wood processes easier than hard wood.
If the machine does not chip well, the Chipper Knife may need sharpening or may need to be replaced.
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 Chute. 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 Chute.
NEVER allow processed material to build up within 3" of the Discharge opening. Move the DR 9.5 Chipper Shredder 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!
Make sure the DR 9.5 Chipper Shredder finishes processing and discharging material before shutting the Engine off.
Chipper
Chute
Figure 18
Discharge
A
rea
Shredder
Hopper
Operator
Zone
Operator
Zone

CONTACT US AT www.DRpower.com 15
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.
Using the Shredder Hopper
The Shredder Hopper can process hard wood branches up to1/2" in diameter and softer organic material up to 2-3/8” in
diameter. You can shred most organic materials. A Guard (flap) is attached to the Hopper. You must push material past this
flap (using a branch if necessary) in order to enter the main Shredding Chamber where revolving steel Hammers do the
shredding.
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.
You can feed several small branches into the Shredder Hopper at once providing their combined diameter is less than 1/2".
Cut branches so they are shorter than (3) feet to make them more manageable.
Allow green materials to dry before processing or alternate processing and discharging green/wet materials with dry materials
to avoid clogging. If wet materials begin to clog, shred a stick to clear the material through. The shredding capacity is 1/2"
hard woody material. For clearing a clog, you can intermittently shred a larger stick up to 1" diameter.
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

16 DR® 9.5 Chipper Shredder
Using the Collection Bag
An optional Collection Bag is provided with your machine.
1. Install the open end of the Collection Bag over the rubber Discharge
Deflector and hook it onto the metal housing tabs above and below the
Discharge Deflector (Figure 19).
2. Squeeze the Rope Lock and pull the Rope to cinch the Collection Bag tightly
around the housing tabs then release the Rope Lock (Figure 20).
Note: Chip and shred as normal. Make sure to empty the Collection Bag before it is
completely full.
To Free a Clog
1. Remove any material left in the Chipper Chute and Shredder Hopper with a
wooden stick.
2. Check the Discharge Opening for clogs. If it is clogged, clear it with a stick.
3. Start the machine and allow any remaining material to discharge.
4. If you have been shredding wet/green materials the clog may be near the
shredder housing inlet. Shred a wood stick of up to 1" diameter to clear the
clogged wet material.
5. If the clog does not clear repeat the above process.
6. Be certain the cutting chamber is clear before trying to process more
material.
Collection
Bag
Figure 20
Rope Lock
Rope
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.
Discharge
Deflector
Figure 19
Tab
Tab

CONTACT US AT www.DRpower.com 17
Chapter 4: Maintaining The DR 9.5 Chipper Shredder
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.
Regular Maintenance Checklist
PROCEDURE BEFORE EACH USE EVERY 25 HOURS
Check Engine Oil Level 
Check General Equipment Condition 
Clean Engine Exterior & Cooling Fins 
Inspect Knife for damage and sharpness 
Check Knife Attachment Screws 
Check Hammers/Spacers for Wear, Reverse or Replace as Needed 
Check Air Filter, Clean or Replace as Needed 
Check Tire Pressure 
Change Engine Oil 1st time 5 hrs 
Inspect Spark Plug, Replace as Needed 
Removing and Replacing the Engine Oil
Tools and Supplies Needed:
10mm Wrench
Rags and approved Container (for waste oil)
Small funnel
Engine Oil (see your Engine Manual for Oil specifications)
Note: Drain the oil when the Engine is warm; warm oil drains quickly and
completely.
7. Set the machine on a level surface, place a container between the wheels
under the unit toward the right side, and remove the Oil Fill/Dipstick on the
left side of the machine (Figure 21).
8. On the right side of the engine, use a 10mm Wrench to remove the Oil Drain
Plug allowing the used oil to drain completely through the drain hole into an
approved Waste Oil Container (Figure 22).
9. Replace the Oil Drain Plug, and refill with new oil (see “Adding Oil and
Gasoline” on page 11).
Note: Be sure to use environmentally safe disposal procedures in the disposing of the
used oil.
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.
Drain Plug
Figure 22
Drain Hole
Figure 21
Oil Fill/Dipstick

18 DR® 9.5 Chipper Shredder
Figure 23
Wheel
Grease
Fitting
Greasing the Wheel Bearings
Tools and Supplies Needed:
Grease Gun
Lithium Grease
Clean Cloth
1. Wipe all dirt, etc., from the Grease Fittings on both Wheels with a clean cloth
(Figure 23).
2. Apply no more than three pumps of quality general-purpose lithium grease
with a hand-pumped grease gun to the Grease Fitting on each Wheel.

CONTACT US AT www.DRpower.com 19
Replacing the Chipper Knife
The DR 9.5 Chipper Shredder is shipped with a sharp Chipper Knife and
depending upon material being chipped we've found it can remain acceptably
sharp for 40 plus hours. When you notice diminished self-feeding, it is time to
replace the knife. You may also choose to have the knife sharpened instead as
described on the next page.
NOTICE: Electric Start Models-You will need to block underneath the electric
start model to support the machine when the Leg is removed in step 1.
Tools and Supplies needed:
1/2" Wrench
1/2" Deep Socket
3/16" Allen Wrench
Awl
Gloves
1. Use a 1/2" Wrench to remove the nine Locknuts that secure the
Hammermill Housing/Shredder Hopper Assembly (also the Leg for Electric
Start Models) (Figure 24). Lift the Assembly off the machine.
2. Use a 1/2" Wrench to remove the three Locknuts that secure the Chipper
Chute and lift it off the machine (Figure 25).
3. Rotate the Flywheel until the Locknut is visible through the Locknut Access
Hole. (Figure 26).
4. Clean out the heads of the Allen Screws with an awl or sharp tool (Figure
27).
5. Insert a 3/16” Allen wrench into the head of the screw and a 1/2" Deep
Socket on the Locknut through the Locknut Access Hole (Figure 26) and
remove the Locknut and Screw.
Note: Take care not to drop the Allen Screw or Locknut into the machine.
6. Rotate the Hammer Mill Assembly until the outer Locknut is visible
through the Locknut Access Cutout.
7. Repeat Steps 6 and 7 for the remaining Screw and Locknut.
8. Remove the dull or damaged Knife and visually inspect the 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 the Flywheel.
9. Install a new or sharpened Knife and finger tighten the Allen Screws and
Locknuts.
Note: New Allen Screws and Locknuts are provided with each new Chipper Knife.
10. Using a 3/16" Allen Wrench on the Screw and a 1/2" Deep Socket on the
Locknut, tighten the hardware to secure the Chipper Knife.
11. Double-check both Screws for tightness one more time.
12. Reinstall the Chipper Hopper and Hammer Mill Housing/Shredder
Hopper Assembly (also the Leg for Electric Start Models).
Chipper
Knife
Figure 27
A
llen
Screws
Flywheel
Locknut
A
ccess
Hole
Figure 26
Flywheel
Locknut
Locknut
A
ccess
Cutout
Chipper Chute
Figure 25
Locknuts (3)
Figure 24
Locknuts (2)
(not Shown)
Hammermill
Housing
Shredder
Hopper
Locknuts (7)

20 DR® 9.5 Chipper Shredder
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 28).
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 29), or if you are unable to remove dents or gouges with these guidelines,
replace the Knife.
Figure 28: New Knife
Figure 29: Sharpened Knife
Short Side Beveled Edge
Knife Mounting Hole
9/32" (.28") 9/32" (.28")
Short Side Beveled Edge
Knife Mounting Hole
13/64" (.20") 13/64" (.20")