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CONTACT US AT 

www.DRpower.com

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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 ac

cessories.  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. 

Summary of Contents for PRO MAX450

Page 1: ...o 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 VACU...

Page 2: ...2 DR LEAF LAWN VACUUM...

Page 3: ...apter 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 Gas...

Page 4: ...3 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 Part...

Page 5: ...ded 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 ob...

Page 6: ...ne 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...

Page 7: ...ets 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 Tr...

Page 8: ...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...

Page 9: ...af 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 remo...

Page 10: ...n 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 D...

Page 11: ...ore 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...

Page 12: ...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...

Page 13: ...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...

Page 14: ...11541 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...

Page 15: ...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 Figu...

Page 16: ...ward 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...

Page 17: ...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...

Page 18: ...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...

Page 19: ...gh 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...

Page 20: ...ter 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 t...

Page 21: ...Enclosure Sleeve onto the Outlet Chute and over the rib to secure it Figure 40 31 Tighten all Enclosure hardware installed in steps 11 thru 18 32 Open the four Buckles securing the Left and Right Side...

Page 22: ...en 38 Repeat the last step for the other Batten Pocket on this side and for the two Pockets on the opposite side of the Enclosure 39 Install the Metal Insert into the Insert Pocket of the rear Top Doo...

Page 23: ...tion from the longer Hose Cuff section 5 Flip the Hose Coupling section around so the Coupling is facing the longer section of Hose Figure 52 Loosen the Hose Bridge Clamp at the end of the longer Hose...

Page 24: ...port Bracket Figure 54 9 Support the Hose with the Rubber Strap by hooking one end into the Support Loop going under the Coupling and securing the other end onto the Support Loop Figure 55 Hose Suppor...

Page 25: ...DR OWNER 376 9637 to order a Universal Deck Adapter Kit or Hose Adapter Kit 1 Install the Deck Adapter onto your Lawn Mower Figure 57 2 If you do not have a DR Deck Adapter and the 8 Hose will not fit...

Page 26: ...ing these procedures Follow the steps closely to ensure parts are not damaged Note The Tractor must be turned fully to the left Figure 57 a Remove the Hose Cuff from the Deck Adapter position it next...

Page 27: ...move the dipstick and add about half the quantity of the oil recommended by the Engine Manufacturer refer to your Engine Owner s Manual for recommended quantities and wait one minute for the oil to se...

Page 28: ...Tire Pressure Gauge 2 Check what the manufacturers recommended pressure is 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 hose 4 Replac...

Page 29: ...you feel resistance then pull the cord with a smooth accelerating motion to start the engine One or two pulls usually starts the DR LEAF and LAWN VACUUM Electric Start Turn the Key to START until the...

Page 30: ...te Figure 64 Hitch Pin Hitch Clip Tow Hitch Rubber Washer Use common sense when using the machine Learn to recognize the change in sounds when overloaded Stop the engine immediately if the machine bec...

Page 31: ...r Cut wet grass can be very heavy Fill the Collector only 3 4 full if the material is very wet This will make the Leaf System easier to pull and to dump Figure 68 15 Max Watch out for low branches ove...

Page 32: ...re 73 until it reaches full travel or the bed hits the ground 7 Drive the Mower forward with the collector open to move the Leaf System away from the pile of debris and allow all debris to slide from...

Page 33: ...www DRpower com 33 12 Pull the Enclosure Sleeve around the Outlet Chute Figure 69 Empty the Collector after each use Do not store the Leaf System with debris in the Collector Enclosure Sleeve Figure 6...

Page 34: ...Bolts from under the Collector Base corners Figure 78 7 Loosen the Knobs at the top corners you do not need to remove them 8 With help from another person lift the Enclosure from the Flatbed and set i...

Page 35: ...using the Hitch Pin with Rubber Washer and secure using the Hitch Clip Figure 81 Tips Be careful in corners Practice in first gear to understand the effects of the machine on your ability to turn sha...

Page 36: ...op door flap and remove it from its sleeve Figure 84 4 Unhook the Velcro Flaps that secure the Enclosure to the Top Front Tube Figure 85 5 Remove the Hand Knobs and the C Head Bolts that secure the To...

Page 37: ...ug Replace Engine Air Filters Replace the filter if excess oil is found on the foam element or any oil is found in the paper element Lubrication Your DR PRO MAX450 LEAF and LAWN VACUUM was lubricated...

Page 38: ...Large Washer and Wheel 4 Install the new Wheel 5 Install the Large Washer and secure with the Cotter Pin bend the ends of the Cotter Pin to lock it onto the Axle Impeller Maintenance An Impeller Tool...

Page 39: ...rge a dead or significantly discharged Battery To connect a Battery Charger to your DR LEAF and LAWN VACUUM follow the steps listed below 1 Attach the Black alligator clipped wire from the Charger Ada...

Page 40: ...regular household trash Law in most areas prohibits incinerating disposing in a landfill or mixing a sealed lead acid Battery with household trash Recycling a Used Battery Please dispose of your used...

Page 41: ...el See your engine owner s manual You should be using fresh clean gas If the gas is old change it Use a fuel stabilizer if you keep gas longer than one month Check the Throttle adjustment and travel S...

Page 42: ...g at full throttle Be sure the Lawn Deck Blades are engaged and running at full throttle Be sure the Deck is set at the proper mowing height Use 1st or 2nd gear on your Lawn Tractor for best results T...

Page 43: ...Nut Nylon Lock Flanged 3 8 16 15 114681 Bolt HCS 1 4 20 X 1 1 4 GR5 ZP 16 110731 Nut Nylon Lock 1 4 20 17 234991 Washer 0 53 ID X 1 06 OD X 0 095 ZP 18 235001 Pin Cotter 7 64 X 1 ZP Ref Part Descripti...

Page 44: ...44 DR LEAF LAWN VACUUM Schematic FRAME AND BED ASSEMBLY...

Page 45: ...t Nylon Lock Flanged 5 16 18 20 119831 Bolt HCS 1 4 20 X 3 4 GR2 ZP 21 333331 Nut Nylon Lock Flanged 3 8 16 22 A0000072109 Bolt HCS 5 16 24 X 2 7 8 GR8 YZP 23 350361 Washer Flat 0 344 X 1 25 X 0 25 ZP...

Page 46: ...46 DR LEAF LAWN VACUUM Schematic POWER UNIT ASSEMBLY...

Page 47: ...rame Top Front 4 A0001234667 Tube Frame Top Rear 5 110761 Nut Nylon Lock 5 16 18 6 350271 Bolt C Head 5 16 18 X 1 75 ZP 7 350301 Knob 5 16 18 W Lock 1 16 Dia Ref Part Description 8 134431 Bolt HCS 5 1...

Page 48: ...48 DR LEAF LAWN VACUUM Schematic COLLECTOR ASSEMBLY...

Page 49: ...are available through DR Power Equipment Ref Part Description 1 337951 Hose 8 ID X 72 Long PVC cut into two pieces 56 section and 16 section 2 337961 Clamp Hose 8 Bridge 3 354421 Strap Hook Set 4 3519...

Page 50: ...the required maintenance as defined by the manufacturer s owner s manuals The warranty holder is responsible for replacement of normally wearing parts such as the Spark Plug and Air Filters Accessori...

Page 51: ...buretor If there is dirt or moisture in the gas or tank remove it by draining the tank Completely fill the tank with fresh unleaded gas and add the appropriate amount of stabilizer or gasoline additiv...

Page 52: ...8 0 0 H I N E S B U R G R O A D S O U T H B U R L I N G T O N V E R M O N T 0 5 4 0 3 2022 DR Power Equipment All rights reserved A0002325658_A...

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