DR PRO MAX450 Quick start guide

CONTACT US AT www.DRpower.com 1
Serial No.
Order No.
DR Power Equipment
Toll-free phone: 1-800-DR-OWNER (376-9637)
Website: www.DRpower.com
Read and understand this manual and all instructions before operating the DR LEAF and LAWN VACUUM.
DR®LEAF & LAWN VACUUM
SAFETY & OPERATING INSTRUCTIONS
Model:
PRO MAX450

2DR® LEAF & LAWN VACUUM

CONTACT US AT www.DRpower.com 3
Table of Contents
Conventions used in this manual ..................................................................................................................................... 5
Serial Number and Order Number................................................................................................................................... 5
Additional Information and Potential Changes................................................................................................................ 5
California Proposition 65 .................................................................................................................................................. 5
Chapter 1: General Safety Rules .................................................................................................................................................... 6
Labels6
Protecting Yourself and Those around You ..................................................................................................................... 7
Safety for Children and Pets.............................................................................................................................................. 7
Safety with Gasoline-Powered Machines.......................................................................................................................... 7
Safety with Gasoline-Powered Machines (continued) ..................................................................................................... 7
Slope Operation ................................................................................................................................................................ 8
General Safety.................................................................................................................................................................... 8
Chapter 2: Setting Up the DR PRO MAX450™ LEAF and LAWN VACUUM................................................................................... 11
DR PRO MAX450™ LEAF and LAWN VACUUM Controls and Features ...................................................................... 11
Specifications .................................................................................................................................................................. 11
Assembly Parts Identification ......................................................................................................................................... 13
Installing the Wheels....................................................................................................................................................... 15
Installing the Collector Base ........................................................................................................................................... 16
Assembling and Installing the Power Unit ..................................................................................................................... 16
Assembling the Collector ................................................................................................................................................ 17
Installing the Inlet Hose.................................................................................................................................................. 23
Setting up your Lawn Mower .......................................................................................................................................... 25
Hitch Plate Kit Installation (optional) ............................................................................................................................. 25
Deck Adapter Installation................................................................................................................................................ 25
Connecting the DR PRO MAX450™ LEAF and LAWN VACUUM to your Mower ........................................................ 25
Connecting the Inlet Hose to the Deck Adapter ............................................................................................................ 26
Adding the Engine Oil and Gasoline .............................................................................................................................. 27
Adding Oil ....................................................................................................................................................................... 27
Adding Gasoline .............................................................................................................................................................. 27
Tire Pressure Check......................................................................................................................................................... 28
Chapter 3: Operating the DR PRO MAX450™ LEAF AND LAWN VACUUM.................................................................................. 29
Before Starting the Engine .............................................................................................................................................. 29
Starting and Stopping the Engine................................................................................................................................... 29
Operating Safety.............................................................................................................................................................. 30
Towing the DR PRO MAX450™ LEAF and LAWN VACUUM ........................................................................................ 30
Towing Safety .................................................................................................................................................................. 31
Slopes and Uneven Terrain............................................................................................................................................. 31
LEAF and LAWN VACUUM Tips..................................................................................................................................... 31
Dumping.......................................................................................................................................................................... 32
Converting to Flatbed Trailer Mode................................................................................................................................ 34
Using the Flatbed Trailer................................................................................................................................................. 35
Collapsing the Collector for Compact Storage ............................................................................................................... 36
Chapter 4: Maintaining the DR PRO MAX450™ LEAF and LAWN VACUUM ................................................................................ 37
Regular Maintenance Checklist ...................................................................................................................................... 37
Lubrication....................................................................................................................................................................... 37
LUBRICATE WHEEL BEARINGS:.................................................................................................................................... 37
REMOVING AND REPLACING THE ENGINE OIL........................................................................................................ 38
Replacing the Wheels ...................................................................................................................................................... 38
Impeller Maintenance ..................................................................................................................................................... 38
Battery Care ..................................................................................................................................................................... 39
Charging the Battery........................................................................................................................................................ 39
Replacing the Battery ...................................................................................................................................................... 40
Disposing of the Battery Responsibly (Electric-Start Models)....................................................................................... 40
Recycling a Used Battery................................................................................................................................................. 40
Chapter 5: Troubleshooting........................................................................................................................................................... 41

4DR® LEAF & LAWN VACUUM
Troubleshooting Table .................................................................................................................................................... 41
Troubleshooting Table (Continued) ............................................................................................................................... 42
Chapter 6: Parts Lists and Schematic Diagrams............................................................................................................................ 43
Parts List –FRAME AND BED ASSEMBLY .................................................................................................................... 43
Schematic –FRAME AND BED ASSEMBLYParts List –POWER UNIT ASSEMBLY .................................................... 44
Schematic –POWER UNIT ASSEMBLYParts List –COLLECTOR ASSEMBLY............................................................. 46
Schematic –COLLECTOR ASSEMBLY Parts List and Schematic –HOSE ASSEMBLY ............................................... 48
Daily Checklist for the DR PRO MAX450™ LEAF and LAWN VACUUM....................................................................... 50
End of Season and Storage ............................................................................................................................................. 51

CONTACT US AT www.DRpower.com 5
This indicates a hazardous situation, which, if not avoided, could result in death or serious injury.
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 your 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.
California Proposition 65
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.

6DR® LEAF & LAWN VACUUM
Read this Safety & Operating Instructions manual before you use the DR LEAF and LAWN VACUUM. Become familiar with the
operation and service 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 PRO MAX450™ LEAF and LAWN VACUUM 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 machine as you set up and before you operate the unit. Replace damaged or missing safety and
information labels immediately.
#342781
#388491
#372291
#388501
#137581
#188871
#A0002163843

CONTACT US AT www.DRpower.com 7
Protecting Yourself and Those around You
Safety for Children and Pets
Safety with Gasoline-Powered Machines
Gasoline is a highly flammable liquid. Gasoline also gives off flammable vapor that can easily ignite 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 completely cooled. 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.
Tragic accidents can occur if the operator is not alert to the presence of children and pets. Children and pets are often attracted to
the machine and the vacuuming activity. Never assume that children or pets 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 always turn off the lawn tractor engine and the DR Leaf and Lawn Vacuum engine if children or pets enter the
work area.
•Before and while moving backwards, look behind and down for small children and pets. You cannot see directly behind the
collector box.
•Never allow children to operate your Lawn Tractor or Vacuum.
•Never allow children or pets to play in the collector. If they become trapped in the enclosure, they may be exposed to
temperatures similar to leaving a child or pet in a car with the windows closed on a sunny day.
•Use extra care when approaching blind corners, shrubs, trees, or other objects that may obscure your vision.
This is a high-powered machine, with moving parts operating with high energy at high speeds. You must use proper clothing and
safety gear when operating this machine to prevent or minimize the risk of severe injury. This machine can cut and sever parts of
your body if they come in contact with the moving impeller blades. Always take the following precautions when operating this
machine:
•Always wear protective goggles, or safety glasses with side shields, while operating either your tractor lawn deck, the vacuum
system, or when performing adjustments to your DR Leaf and Lawn Vacuum, to protect your eyes from possible foreign
objects thrown from the machine.
•Avoid wearing loose clothing or jewelry, which can catch on the machine’s moving parts.
•We recommend wearing gloves while using your DR Leaf and Lawn Vacuum. Be sure your gloves fit properly and do not have
loose cuffs or drawstrings.
•Wear shoes with non-slip treads when using your DR Leaf and Lawn Vacuum. 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 your DR Leaf and Lawn Vacuum.
•Use ear protectors or earplugs rated for at least 20 dba to protect your hearing.

8DR® LEAF & LAWN VACUUM
Safety with Gasoline-Powered Machines (continued)
Slope Operation
General Safety
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:
•Never allow people who are unfamiliar with these instructions to use the DR Leaf and Lawn Vacuum.
•To be safe, do not operate the machine near small children or pets, and never allow children to operate the vacuum. Stop the
vacuum and tractor engine when another person or pet approaches.
•Never allow people or pets to ride in the collector box or on the frame.
•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.
•Empty the collector box and allow the engine to cool completely before storing your DR Leaf and Lawn Vacuum in any
enclosure. Remember, decomposing material can generate heat and start a fire. Never store the machine with 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 and 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 your hands and combustible substances away from the engine when it is hot. Clean the engine area after each use.
•To reduce fire hazard, keep the engine cooling fins and muffler area free of debris build-up such as leaves, grass, oil, grease,
or any other combustible material.
•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, except for adjustment. 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.
•The exhaust area on the engine becomes very hot with use. Allow the engine to cool before doing maintenance or making
adjustments.
Slopes are a major factor related to tip over accidents, which can result in severe injury. All slopes require caution. If you feel
uneasy on a slope, do not vacuum it. Always take the following precautions when using this machine on slopes:
ALWAYS:
•Vacuum up and down the face of slopes, never across. Exercise extreme caution when changing direction on slopes.
•Remove objects such as stones, glass, and metal objects such as cans.
•Watch out for holes, ruts, or bumps. Tall grass can hide obstacles.
NEVER:
•Never vacuum near drop-offs, ditches, or embankments. Your tractor and the vacuum may tip over.
•Never vacuum on slopes greater than 15 degrees or any excessively steep slopes.
•Never vacuum on wet slopes. Reduced traction could result in slipping and a possible roll over.

CONTACT US AT www.DRpower.com 9
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 DR®PRO MAX450™
LEAF and LAWN VACUUMS 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.
•Never run the vacuum engine unless the chute, fabric collector sleeve, and hose are each securely in place and the engine
frame is secured to the main frame.
•Check behind your DR Leaf and Lawn Vacuum before backing up. You cannot see directly behind the collector box.
•Never attempt to open or empty the collector while the lawn tractor deck is engaged or the DR Leaf and Lawn Vacuum engine
is running. Debris may exit at high velocity as you begin to open the collector.
•Do not operate in sandy areas where you will vacuum large quantities of sand. Sand will erode the vacuum housing. Check
for holes after each use and replace the housing and liner when holes develop.
•Never operate the machine on slopes greater than 15 degrees.
•Never tow the DR Leaf and Lawn Vacuum faster than 8 mph.
•Always shut off the lawn tractor engine and the DR Leaf and Lawn Vacuum engine and disconnect the spark plug wire before
attempting to clear any obstructions from the hose.
•Use the DR Leaf and Lawn Vacuum only in daylight.
•Never straddle or reach over the engine area at any time.
•Use only your hands to operate the DR Leaf and Lawn Vacuum engine controls.
•Do not, under any conditions, remove, bend, cut, fit, weld, or otherwise alter standard parts on the DR Leaf and Lawn
Vacuum. Modifications to your machine could cause personal injuries and will void your warranty.
•Do not alter or tamper with safety devices or shields. Make sure they are in their proper position.
•While using the DR Leaf and Lawn Vacuum, do not hurry or take things for granted.
•Never leave the DR Leaf and Lawn Vacuum unattended with its engine running.
•Do not operate the machine when under the influence of alcohol, drugs, or medication.
The DR Leaf and Lawn Vacuum must be operated safely to prevent or minimize the risk of minor or moderate injury. Unsafe
operation can create a number of hazards for you. Always take the following precautions when operating this machine:
•Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people, their property, and
themselves.
•Never use the DR Leaf and Lawn Vacuum to vacuum anything but yard waste, such as leaves, grass, small twigs and pine
cones.
•If the machine starts to make an unusual noise or vibration, immediately shut off the engine, disconnect the spark plug wire,
and allow all moving parts to come to a complete stop and cool. Inspect for clogging or damage. Clean and repair and/or
replace damaged parts.
•See manufacturer’s instructions for proper operation and installation of accessories. Only use accessories approved by DR
Power Equipment.
•Always keep the equipment in good, safe operating condition. Always make certain nuts and bolts are tight and always use
the supplied self-locking hardware; do not substitute.
•For best performance we recommended that you operate your Leaf and Lawn Vacuum in temperatures 40°F and above.

10 DR® LEAF & LAWN VACUUM
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®PRO MAX450™ LEAF and LAWN VACUUM in a safe manner. Contact us at
www.DRpower.com or call 1-800-DR-OWNER (376-9637) for assistance.

CONTACT US AT www.DRpower.com 11
Chapter 2: Setting Up the DR PRO MAX450™ LEAF and LAWN VACUUM
It may be helpful to familiarize yourself with the controls and features of your DR PRO MAX450™ LEAF and LAWN VACUUM 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 PRO MAX450™ LEAF and LAWN VACUUM Controls and Features
Collector Sleeve
Hose Support
Jack
Collector
Outlet
Chute
Collector
Base
Power Unit
Wheels
Figure 1
Pneumatic
Tires
Tow Hitch
Choke
Air Filter
Gas Shut-Off
Starter Recoil Handle
On/Off
Switch
Gas Fill
Inlet Hose with Cuff
Muffler
Throttle
Dump
Actuator
Controls

12 DR® LEAF & LAWN VACUUM
Specifications
Engine
DR Power Equipment R390
Displacement
389 cc
Cylinders
1 (w/cast iron sleeve)
HP
11.7
Ft-lbs Torque
16.90
Starting
Electric w/ Recoil Backup
RPM
3800
Cooling
Air
Fuel Tank Capacity
6.9 qt
Oil Capacity
37.2 oz
Oil Type
SAE 30W HD
Impeller
Welded Steel
Vanes
5 Curved 3.5" High x .16" Thick Steel
Weight
13.2 Lbs
Mount
Keyless Tapered Direct Engine Mount
Vacuum
Impeller Driven
Hose
8" ID x .035" Wall PVC, 72" L
Collector
Over-center Tilt Design w/ Flatbed Base
Volume Capacity
60 Cu ft, 450 Gallons
Weight Capacity
1100 Lbs
Fabric Enclosure
1800 Denier Polyester, Solution Dyed, Bonded PVC
Backing
Dump Tilt
60°
Base
Flatbed, Steel
Frame
Welded Steel, 2 Piece Modular Design
Impeller Housing
Steel Scroll (.12" Thick), Sideplate (.12" Thick)
Wheels
Pneumatic 5.30/4.50-8 4 Ply w/Tube
Quantity
4 (2 Per Side)
Tire Size
14" Diameter x 4.5" Wide
Battery
12 Volt 9 Amp, Spade Terminals
Jack
Standard Equipment
Lawn Mower Recommendations
12 HP Min Flat Terrain otherwise 14 HP (right discharge
Only)
Lawn Mower Hitch
Pin Hitch 8" to 15" from the Ground
Dimensions
92.5" (long) x 46.5" (wide) x 66" (tall)
Tongue Weight
127 Lbs. (empty)
Machine Weight
325 Lbs (empty)

CONTACT US AT www.DRpower.com 13
9........ 342481 ..............Cuff, Hose, 8" .................................1
10 ......337971 Clamp, Hose, 8", Thumbscrew ......1
11 ......337961 Clamp, Hose, 8", LH Bridge...........4
12 ......351981 Coupling..........................................1
13 ......337951 Hose, 8"ID x 72" Long, PVC...........1
14 ......A0001721719 Enclosure, Fabric ............................1
15 ......A0001234669 Base, Collector ................................1
16 ......361201 Batten, FRP, 0.58" X 0.12" X 40" ....2
17 ......A0001234675 Batten, FRP, 0.58" X 0.12" X 47" ....4
Assembly Parts Identification
Compare the contents of the Shipping Box with the Parts Supplied lists and Figures 2 thru 7 below. If there are any questions
contact us at www.DRpower.com or call 1-800-DR-OWNER (376-9637).
Parts supplied (Figure 2 and list below), Parts box contents listed on following page:
Item #Part # Description Qty
1 ........A0001234651 Tube Frame, Top Front.................. 1
2 ........A0001234667 Tube Frame, Top Rear ................... 1
3 ........342561 Axle ................................................. 1
4 ........A0001234650 Tube, Collector, Side Frame .......... 2
5 ........337941 Wheel & Tire, 14X 5.3/4.50-8, 4 Ply4
6 ........342441 Rod, Support Hose ........................ 1
7 ........A0002325649 Chute w/Label, Impeller Outlet ..... 1
8 ........A0001725342 Insert, Metal, Enclosure................. 1
Power Unit
1
Rear Frame
and Collector
Base Assembly
Parts Box
4
3
5
2
6
7
8
14
10
15
9
11
12
11
11
Hose
Assembly
16
17
13
Figure 2

14 DR® LEAF & LAWN VACUUM
1
Figure 5
2
Parts Box (Figure 3):
Item # Part # Description Qty
1 ........... A0000926593........Bracket, Tube, Rear..................................... 2
2 ........... A0001055802........Bracket, Tube, Front ................................... 2
3 ........... 342471..................Strap, Rubber.............................................. 1
............. 350421..................Hook, Strap................................................. 2
4 ........... 388601..................Knob Set...................................................... 1
5 ........... 350211..................Wheels Hardware Set ................................. 1
6 ........... 388671..................Power Unit Hardware Set........................... 1
7 ........... 370361..................Funnel, Oil Flexible (snap together) .......... 1
Hardware in Product Package (Figure 4):
Item # Part # Description Qty
1 ............. 211541 ................Pin, Clevis, 1/2" X 3.5"L, ZP...........................2
2 ............. 350371 ................Bolt, Hex, 7/16-20, Impeller Tool...................1
3 ............. A0000253563......Pin, Clevis, 1/2 x 4.5"L, ZP .............................1
4 ............. A0001681944......Bolt, Carriage, 5/16-18 X 2-3/4″, GR5, ZP......6
5 ............. 189671 ................Washer, Rubber, 1/2" ID, 1" OD ...................1
6 ............. 350271 ................Bolt, C-Head, 5/16-18 X 1.75", ZP .................4
7 ............. 333321 ................Nut-Nylon Lock Flanged 5/16-18...................6
8 ............. 110761 ................Nut, Nylon Lock, 5/16-18 ...............................8
9 ............. 134431 ................Bolt, HCS, 5/16-18 X 1.5", GR5, ZP ...............8
10 ........... 160031 ................Clip, Pin Hitch, 1/2"-9/16".............................3
Knob Set (Figure 5):
Item # Part # Description Qty
1 ............. 388611 ............ Knob, 3 Prong, 5/16-18 Stud ......................... 6
2 ............. 350301 ............ Knob, 5/16-18 W/Lock, 1.16 DIA................... 4
Figure 3
1
Product
Package
7
5
2
3
4
6
Figure 4
1
2
4
3
9
8
6
5
10
7

CONTACT US AT www.DRpower.com 15
1
2
4
3
Figure 7
5
1
2
4
3
Figure 6
Wheels Hardware Set (Figure 6):
Item # Part # Description Qty
1 .............A0001216052..... Washer, 1.00"ID X 1.58"OD X .134" Thick ....... 4
2 .............123341 ............... Bolt, HCS, 3/8-16 X 1.75", GR5, ZP .................. 4*
3 .............333331 ............... Nut, Nylon Lock, Flange, 3/8-16 ....................... 4*
4 .............126851 ............... Pin, Cotter, 3/16" X 1.5" .................................... 2
* This hardware will not be used (with or on) your PRO MAX450 machine.
Power Unit Hardware Set (Figure 7):
Item # Part # Description Qty
1 .............265561 ............Bolt, HCS, 1/2-13 X 2.75", GR5, ZP............... 2
2 .............350231 ............Bolt, Hex, Flange, 5/16-18 X .75"................... 4
3 .............112431 ............Washer, Lock, 5/16", Split, ZP....................... 4
4 .............112411 ............Washer, Flat, 5/16" USS, ZP.......................... 4
5 .............333351 ............Nut, Nylon Lock, Flange, 1/2-13.................... 2
Installing the Wheels
(Use Wheels Hardware Set, see Figure 6)
Tools Needed:
•Pliers
1. Position the Rear Frame/Collector Base Assembly upside down (Figure 8).
2. Install the Axle into the Axle Actuator Mount.
3. Slide a Wheel onto each end of the Axle with the Valve Stems facing in
(Figure 9).
4. Slide a Washer onto the Axle against each Wheel.
5. Slide a second Wheel onto each end of the Axles with the Valve Stem facing
out (Figure 10).
6. Install a 1.00" ID X 1.58" OD X .134" Washer against each Wheel and insert
Cotter Pins into the Axle holes. Use Pliers to bend the ends of the Cotter
Pins to secure the Wheels.
Figure 10
Washer
Wheel
Air Valve
Cotter Pin
Figure 9
Washer
Wheel
Air Valve
Frame
Assembly
Figure 8
Axle

16 DR® LEAF & LAWN VACUUM
Outlet Chute
Figure 12
Impeller
Housing
Bolts, Lock Washers,
and Flat Washers
Installing the Collector Base
Tool Needed:
•1/2" Wrench
1. Tip the Rear Frame/Collector Base Assembly over onto the Wheels (Figure
11).
2. Position the Collector Base onto the Frame and secure with six Carriage
Bolts and Locknuts using a 1/2″Wrench from the Product Pack (Figure 4).
Assembling and Installing the Power Unit
(Use Power Unit Hardware Set, see Figure 7)
Tools Needed:
•1/2" Wrench
•Two 3/4" Wrenches
•Floor Jack
1. Place the Outlet Chute on top of the Impeller Housing (make sure to orient
as shown) and secure with four Bolts, Lock Washers, and Flat Washers using
a 1/2" Wrench (Figure 12).
2. Position the Power Unit at the front of the Rear Frame with the Tow Hitch
facing forward (Figure 13).
Note: Clevis Pins and Hitch Clips needed for the next steps are provided in the
Product Package.
3. Lift the Rear Frame Assembly Tube to align the rear holes and insert a 1/2" X
3.5" Clevis Pin through the holes (Figure 13).
4. Use a Floor Jack to raise the Rear Frame Assembly into the Tow Hitch Tube to
align the front holes and insert a 1/2" X 3.5" Clevis Pin (Figure 14).
5. Secure each Clevis Pin with a Hitch Clip.
6. Place the two 1/2-13 X 2.75" Bolts (from underneath) up through the two
vertical Holes and secure with 1/2-13 Locknuts using two 3/4" Wrenches
(Figure 15).
7. Plug in the Actuator Connectors (Figure 15).
Collector
Base
Figure 11
Carriage Bolt
and Locknut
We recommend having a helper to attach the Frames together. There is a
chance for injury if you attempt it alone because the Power Unit is heavy.
1/2-13 Bolts
and Locknuts
Figure 15
Actuator
Connectors
Clevis Pin and
Hitch Clip
Figure 14
Figure 13
Frame
Assembly
Tow
Hitch
Clevis Pin and
Hitch Clip

CONTACT US AT www.DRpower.com 17
Assembling the Collector
(Use Product Package Hardware, see Figure 4 and Knob Set, see Figure 5)
Tools Needed:
•Two 1/2" Wrenches
1. Stand at the right hand side of the machine (Figure 16).
2. Unfold the fabric Enclosure partially as shown and place it onto the Collector
base.
3. Position the Enclosure with the left side facing up and Enclosure Sleeve
located under front fabric at the front right corner (See Note below).
Note: Standing at the right side of the machine as shown, the DR Logo will be
upside down and the top flap of the Enclosure is towards you.
4. Position a Collector Tube with the Shorter Leg facing the front of the
machine and insert the ends into the corner loop openings (Figure 17).
5. Push the Tubes all the way through the other end of the loops, exposing the
mounting holes at the Tube ends (Figure 18).
6. Flip the Enclosure over (side to side) so the other side is facing up.
7. Stand at the left hand side of the machine (Figure 19).
8. Position the other Collector Tube with the Shorter Leg facing the front of the
machine and insert the ends into the corner loop openings.
9. Push the Tubes through the other end of the loops, exposing the mounting
holes at the Tube ends (Figure 20).
10. Go to the right side of the machine where the Tube ends are located.
Figure 18
Tube
End
Figure 16
Enclosure
Sleeve
Fabric
Enclosure
Collector Base
DR Logo
Front Right
Side Corner
Top Flap
Velcro
Collector
Tube
Figure 19
Left Side
of
Machine
Loop
Opening
Shorter Leg
Loop
Opening
Collector
Tube
Figure 17
Right Side
of Machine
Loop
Opening
Shorter Leg
Loop
Opening
Both Tubes
Installed
Figure 20
Tube Ends

18 DR® LEAF & LAWN VACUUM
11. Start at the front corner of the Enclosure. Position a Front Tube Bracket on
the bottom Tube (Figure 21). Secure the Bracket with two 5/16-18 Bolts and
Locknuts (found in product pack, Figure 4) using two 1/2" Wrenches but do
not fully tighten. Make sure the fabric doesn’t get pinched under the
Bracket.
12. Position the other Front Tube Bracket on the top Tube and secure with two
5/16-18 Bolts and Locknuts (found in product pack, Figure 4) using two 1/2"
Wrenches but do not fully tighten (Figure 22). Make sure the fabric doesn’t
get pinched under the Bracket.
13. At the rear corner of the Enclosure, position a Rear Tube Bracket on the
bottom Tube and secure with two Bolts and Locknuts using two 1/2"
Wrenches (Figure 23). Do not fully tighten until entire frame is secured onto
bed platform. Ensure fabric doesn’t get pinched under the Bracket.
14. Position the other Rear Tube Bracket on the top Tube and secure with two
Bolts and Locknuts using two 1/2" Wrenches (Figure 24). Do not fully
tighten until entire frame is secured onto bed platform. Ensure fabric doesn’t
get pinched under the Bracket.
15. Stand up the Enclosure so the Brackets are resting on the Bed. Insert the two
ends of the right side Collector Tube into the holes at the corners of the
Collector Base (Figure 25).
Figure 25
Collector
Tubes
Right Side
Corners
Tube Fully in
Corner Hole
Rear Tube
Bracket
Figure 24
Bolts and
Locknuts
Rear Tube
Bracket
Figure 23
Bolts and
Locknuts
Tube End
Front Tube
Bracket
Figure 22
Bolts and
Locknuts
Front Tube
Bracket
Figure 21
Bolts and
Locknuts
Tube End

CONTACT US AT www.DRpower.com 19
16. Insert the two ends of the left side Collector Tube into the holes at the
corners of the Collector Base (Figure 26).
17. Secure the rear Tube Brackets to the Collector Base with one Hand Knob for
each Bracket (Figure 27). Do not fully tighten.
18. Secure the front Tube Brackets to the Collector Base with two Hand Knobs
for each Bracket (Figure 28). Do not fully tighten.
19. Install the top front Tube Frame to the side Tube Frames and secure with
two C-Head Bolts and Threaded Hand Knobs (Figure 29).
20. Slide the top rear Tube Frame through the Enclosure Loop and secure to the
Side Tube Frames with two C-Head Bolts and Threaded Hand Knobs (Figure
30).
Note: The Top Rear Tube Frame is crimped on both ends. The ends that are
crimped create a flat that is offset from the round tube. Install with the offset
facing out towards the back so the Top Rear Tube Frame and the tube at the
rear of the Collector Tube are aligned and relatively flush with each other.
Top Rear
Tube Frame
Figure 30
Top Rear
Loop
Rear Door
Flap
Hand
Knob
with
Threads
C-Head
Bolt
Tube Offset
Facing out
Top Front
Tube Frame
Figure 29
Hand
Knob with
Threads
C-Head
Bolts
Bracket
Hand Knob
with Stud
Figure 28
Front Tube
Bracket
Collector
Base
Hand Knob
with Stud
Figure 27
Rear Tube
Bracket
Collector
Base
Left Side Tubes
Figure 26

20 DR® LEAF & LAWN VACUUM
Outer
Flap
Figure 35
21. Open up the front corner flaps to relieve tension on the Enclosure for the
following steps (Figure 31).
22. SIDE FLAPS: Open the inner and outer Side Flaps by pulling at the Velcro
closures to separate them (Figure 32).
23. Fold the Inner Flap over the Side Tube and hold it in position (Figure 33).
24. Fold the Outer Flap up and secure it to the Velcro on the Inner Flap. Repeat
for the other side (Figure 34).
25. FRONT FLAPS: Open the Front Flaps by pulling at the Velcro closures to
separate them (Figure 35).
26. Fold the Outer Flap over the Front Tube and hold it in position (Figure 36).
27. Fold the Inner Flap over onto the Outer Flap to secure the first Velcro Strip
(Figure 37).
Outer Flap
Figure 37
Velcro
Figure 34
Velcro
Outer Flap
Inner Flap
Figure 36
Velcro
Outer
Flap
Figure 33
Inner Flap
Velcro
Side Flaps
Figure 32
Front Corner
Flap
Figure 31
Front Corner
Flap