Harper DEBRIS 2700 User manual

Debris Blower
DEBRIS BLOWER 2700
1-2024
OPERATOR’S
MANUAL
Serial Number: 18A01 +
Part # 301021

Debris Blower

Debris Blower
Thank you for purchasing a Harper Debris Blower.
As with all Harper products, the Debris Blower has been developed through tough design and
testing procedures to produce a top quality machine. This manual gives assembly, operating, and
service information for the DB2700. Please read and understand all instructional material included
with the Debris Blower or its components before assembling and operating the equipment.
A Debris Blower can present hazards to an operator who follows unsafe procedures in either the
operation or maintenance of the unit. Therefore, SAFETY WARNINGS are presented at certain
locations in the text.
THIS SYMBOL: SAFETY WARNING!
MEANING: Failure to understand and obey this warning may result in injury to you or others.
Whenever this symbol is used, please pay very close attention to the information presented, and
make sure you fully understand. If you do not, contact your dealer or Harper Industries, Inc. for
clarification.
SAFETY WARNING!
ALL SHIELDS AND GUARDS MUST BE IN PLACE FOR PROPER AND SAFE OPERATION
OF THIS EQUIPMENT. WHERE THEY ARE SHOWN REMOVED IN THIS MANUAL, IT IS FOR
PURPOSES OF ILLUSTRATION AND INSTRUCTION ONLY. DO NOT OPERATE THIS
EQUIPMENT UNLESS ALL SHIELDS AND GUARDS ARE IN PLACE.
Harper Industries, Inc. is continually striving to improve the design and performance of its
products. We reserve the right to make changes in specifications and design without thereby
incurring any obligation relative to previously manufactured products.
© 2023 Harper Industries, Inc.
The Harper name is a registered trademark of Harper Industries, Inc. All other brand and product
names are trademarks or registered trademarks of their respective companies.
1

Debris Blower
LIMITED WARRANTY
Harper Industries, Inc. (HII) warrants to each purchaser of a new Harper Debris Blower from
an authorized dealer or representative, that such equipment is free of manufacturer’s defects
in workmanship and materials which appear while in normal service for a period of ONE YEAR
commencing with delivery to the original user.
The obligation of HII under this warranty is expressly limited, at our option, to replacement
or repair at a service facility designated by Harper Industries or at the manufacturing plant in
Harper, KS. A part will be replaced after inspection discloses it to have been defective. This
warranty does not apply to defects caused by damage or unreasonable use (including failure
to provide reasonable and necessary maintenance, or by performing functions without genu-
ine Harper Debris Blower accessories) while in the possession of the consumer.
Warranty is limited to parts, labor and ground freight delivery of replacement parts. HII shall
not be liable for the consequential damages of any kind, including but not limited to conse-
quential labor costs or transportation charges in connection with replacement or repair of
defective parts.
This warranty does not apply to parts subjected to misuse, abuse, alteration, improper or inad-
equate maintenance, or normal wear (including belts).
Harper Industries makes no warranty with respect to trade accessories. They are subject to
the warranties of their respective manufacturers.
ANY IMPLIED OR STATUTORY WARRANTIES, INCLUDING ANY WARRANTY OR MER-
CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSLY LIMITED
TO THE DURATION OF THIS WRITTEN WARRANTY. HII makes no other express warranty,
nor is anyone authorized to make any on behalf of HII.
For further information please contact your nearest Harper Debris Blower dealer.
RECORDS
Date of Purchase ______ / ______ / ______
Dealer’s Name _________________________________
Dealer’s Phone _________________________________
Serial Number Machine __________________________
2

Debris Blower
Table of Contents
OPERATOR SECTION
To the Owner or Operator............................................
Warranty Statement......................................................
Table of Contents..........................................................
Specications................................................................
Safety Information
Equipment & Control........................................
Guards & Shields.............................................
Safety Decals...................................................
Before Operation..............................................
Operation..........................................................
Control Identification
PTO Shaft.........................................................
3-Point Hitch Pins.............................................
Input Shaft........................................................
Diverter Handle Assy........................................
Belt Tensioner...................................................
Impeller Shaft....................................................
Caster Wheels..................................................
Assembly.........................................................................
Operation
To begin operation............................................
To stop operation..............................................
Adjustments
Belt Tension Adjustment...................................
Cable Adjustment..............................................
Service & Maintenance
Break-in Service...............................................
Lubrication........................................................
Troubleshooting
Belts..................................................................
Standard Torque Chart....................................................
PARTS SECTION
DB2700
Components.....................................................
Lower Assembly................................................
Discharge Assembly.........................................
Caster Assembly...............................................
Hitch Assembly.................................................
Diverter Handle Assembly................................
Upper Fan Cover Assembly..............................
Shield w/ Decals...............................................
Discharge Decal Assembly...............................
Decal Installation..............................................
1
2
3
4
5
5
5
5
6
7
7
7
7
7
7
7
8
9
9
10
10
10
10
11
11
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
3

Debris Blower
Specifications
4
Air Flow 4000 CFM (approx. 220 mph)
Noise 81 decibels (at operator in tractor seat)
Blower Housing 31” (split design for east fan replacement)
Fan 27” diameter
Drive 540 RPM PTO belt drive
Belt Drive 1 - 4/3V Powerband
Tractor Mounting 3 Point Hitch - Catagory #1
Casters Heavy-duty 8” adjustable caster wheels
Anit-Scalp Tough 3” diameter rollers
Dimensions Length 43”, Width 48”, Height 36”
Air Flow Control Bi-directional discharge (left or right) controlled from operator’s seat
Approx. Weight 425 lbs.
Power Requirement 20-30 hp at PTO
Superior Construction in every model:
Every Harper Debris Blower has a durable polyester baked paint nish, with epoxy primer
applied to cover completely and keep moisture out. This nish is extremely strong, and resists
chipping and cracking.

Debris Blower
Safety Information
Equipment & Controls
• Altering this equipment in any manner
which adversely affects its operation,
performance, durability, or use will
void the warranty and may cause haz-
ardous conditions.
• Know the location and function of
all controls and how to stop this equip-
ment quickly in an emergency before
you operate the equipment.
READ AND UNDERSTAND THE
OWNER’S MANUAL.
• Keep all nuts, bolts and screws tight
to help ensure safe operation of this
equipment.
• Use genuine factory parts or parts with
equivalent characteristics, including
type, strength and material. Failure to
do so may result in product malfunc-
tion and possible injury to the operator
and/or others.
• Replace locknuts and locking screws
if you can tighten them without feel-
ing considerable resistance for sev-
eral turns before they are completely
tight. Replace them with factory autho-
rized parts or their equivalent.
• If hardware is not secure, or if some
of the hardware is over-tightened,
equipment failure may result, posing
possible safety hazards.
Guards & Shields
• Keep the equipment and attach-
ments in good operating condition,
and keep all safety devices in place.
Replace all worn, damaged, unusable,
missing or lost safety shields and
guards before operating the equip-
ment.
Safety Decals
• If safety related or instructional decals
become illegible or are removed,
replace them immediately.
• If you replace parts that have such
decals attached to them, make sure
the decals are replaced with current
versions, and that the decals are on
the replacement parts before the
machine is operated again.
• New decals may be obtained from
your local Harper Dealer.
SAFETY WARNING!
• To prevent possible eye injury, al-
ways wear SAFETY GLASSES while
servicing the equipment.
Before Operation
• Before operating this equipment, read
and understand the Owner’s Manual.
• Do not allow children to operate this
machine.
• Never operate this machine in the
vicinity of bystanders.
• Before servicing or inspecting the
machine, make certain that the power
source is shut down, make certain all
moving parts have stopped and
disconnect the PTO shaft.
5

Debris Blower
• Never allow hands, clothing or any
part of the body to enter the discharge
chute or near moving parts.
• Avoid wearing loose-fitting clothing.
• Wear approved eye and ear protection
while operating the machine.
• The machine should be operated on
level surfaces only.
• Before starting the machine, visually
inspect all nuts, bolts and other
fasteners to see that they are properly
secured. Nuts, bolts and other
fasteners should be checked every 8
to 10 hours of operation for proper
alignment and tightness.
Operation
• Make certain the impeller chamber is
empty before starting the machine.
• If a foreign object should strike the
impeller mechanism of the machine
and cause an unusual noise or
vibration, shut the engine or PTO off
immediately and allow it to come to a
complete stop. Disconnect the spark
PTO shaft from the power unit, and
then do the following:
1. Inspect for damage.
2. Repair or replace any damaged
parts.
3. Check for and tighten any loose
bolts, nuts, fasteners or parts.
• Keep debris material from building up
in the discharge and inlet area, as this
may prohibit proper discharge of
airflow and can cause poor
performance.
• Keep the impeller inlet area clean from
debris and other accumulations.
• Keep all safety shields and guards in
place and in good working condition.
• Keep your face and all body parts
away from inlet and discharge
openings.
• Stay away from the discharge area
when machine is in operation.
• If the Debris Blower should become
clogged, shut off the engine or PTO
and allow it to come to a complete
stop. Disconnect the spark plug wire
from the spark plug or PTO shaft
before clearing debris.
• Do not allow hands, clothing or any
part of the body to enter the discharge
chute, impeller inlet or near any
moving parts.
• Replace damaged or missing safety
decals.
• Keep hands, feet and clothing away
from PTO driven parts.
• Keep all guards and shields in place
during operation. Disengage PTO and
shut off the engine before removing
guards or shields.
• Never attempt to adjust, clean or
lubricate the machine while it is in
operation.
• Operator should never wear loose
clothing when working around PTO.
• Before starting tractor, make sure that
the transmission and PTO are
disengaged.
• Make sure the tractor’s engine is at
idle speed before engaging the PTO.
• Be sure the tractor’s engine is at idle
before changing the airflow of the
Debris Blower Diverter.
6

Debris Blower
1. PTO Shaft – Transfers power from the
tractor to the Debris Blower. Make
sure up or down angle of PTO shaft
does not exceed 15 degrees. (2
grease fittings)
2. 3-Point Hitch Pins – Mount the Debris
Blower to the 3-point hitch pins.
3. Input Shaft – Driven by the PTO shaft.
Always disconnect the PTO from the
tractor when performing maintenance.
(2 grease fittings)
4. Diverter Handle Assembly – Changes
direction of discharge air flow. Make
sure handle is locked into place before
operating.
5. Belt Tensioner – Spring loaded and
keeps the belts within proper tension
ing.
6. Impeller Shaft – Belt driven by input
shaft. (2 grease fittings)
7. Caster Wheels – Carry weight of ma-
chine during operation when 3-point
hitch is in float position. (1 grease fit-
ting per wheel)
SAFETY WARNING!
Keep all safety shields in place during
operation.
Control Identification
Diverter Handle
Assembly
Impeller Shaft
PTO Shaft
3 PT. Hitch
Pins
Caster Wheels
Input Shaft
7

Debris Blower
1. Remove from crate.
2. Mount Diverter Handle Assembly to
the frame of the machine with the two
3/8” bolts already in the frame.
3. Connect PTO shaft to input shaft of
machine, tighten set screws on shaft.
4. Mount 3-point pins on Debris Blower.
5. Mount Debris Blower to 3-point of trac-
tor and connect PTO shaft.
Note:
A set of belts between the PTO shaft
and the impeller shaft assembly drive the
fan blades whenever the PTO drive-shaft
is turning.
On initial operation of the Debris
Blower, the belts may shrink and need
readjustment after the rst hour of use.
When readjusting belt tension, use a
straightedge across the faces of pulleys to
make sure they are properly aligned and
the belts will run true.
SAFETY WARNING!
• Keep pants and loose clothing away
from PTO drive and shaft and all
drive pulleys, belts and shafts.
• Never operate the Debris Blower
beyond the suggested 540 PTO
speed.
• Do not attempt to service machine
while it is in operation.
SAFETY WARNING!
• Wear approved eye and ear
protection while operating the
Debris Blower.
• Keep all guards in place during
operation. Never operate the Debris
Blower with safety shields removed.
• Before operating the machine,
check to ensure that all belt guides
and tensioner are in place to
 preventbeltsfromslippingo󰀨the
pulleys and systems from being
accidentally engaged.
• Check inlet and discharge housings
for children, pets and foreign
objects before operating.
• Keep clothing and all body parts
away from rotating parts. Do not
 wearloosettingclothing.
• Periodically clean debris material
away from the machine to lessen
 thepossibilityofre.Alwayskeepa
 reextinguisherneartheDebris
Blower during operation.
• Impeller blade rotation cannot be
controlled from the Debris Blower.
• Obtain and wear safety glasses
when operating this machine.
Note:
A safe operator is one who practices
safety and uses good common sense to
protect himself from ying material.
Assembly Operation
8

Debris Blower
To begin operation:
1. Mount Debris Blower to 3-point of trac-
tor and connect PTO shaft to tractor
output shaft.
- Ensure that the PTO shaft is the
correct length and angle. Contact your
local dealer if you have any questions.
2. Adjust center link on tractor so that the
Debris Blower is setting level at the
ground surface while 3-point hitch is in
FLOAT position.
3. Move Diverter Handle to the desired
output direction.
4. Engage PTO lever on the tractor AT
IDLE SPEED of the tractor and begin
operation of the Debris Blower.
5. If the operator needs to change direc-
tion of airflow of the diverter, make
sure the tractor is at idle speed.
6. If it is necessary to inspect or work on
the Debris Blower, always disengage
the PTO shaft and shut off the tractor
engine before doing so.
SAFETY WARNING!
• Belts may become severely dam-
aged by engaging PTO shaft at high
RPM.
• To avoid personal injury, always
keep face and body parts away from
inlet and discharge openings.
• Never leave this machine unattend-
ed.
• Make sure the tractor engine has
 beenshuto󰀨andthePTOshafthas
been disconnected before attempt-
ing any service or inspection.
• Operating with the incorrect PTO
length or angle may cause harm or
damage to the tractor or debris
blower.
To stop operation:
1. Move throttle on tractor to the slow
position and disengage the PTO lever
on the tractor.
2. Shut off the tractor engine and allow
the machine to come to a complete
stop.
SAFETY WARNING!
• The Impeller is heavy and will con-
tinue to turn even though the opera-
 torhasshuto󰀨thepowersource.
• Do not attempt to service or inspect
the machine until you see that the
shafts have stopped turning and
that there is no noise coming from
the machine.
9

Debris Blower
Belt Tension Adjustment
• Check the condition of drive belts be-
fore each use or after every 25 hours
of operation.
Note:
Use only industrial V-belts. Do not use
automotive belts.
Do not over-tighten belts. Excessive
tension can cause premature bearing and
belt failure.
Use a straightedge to check alignment
across the faces of pulleys after adjusting
belt tension to ensure that the belts will
run true.
Cable Adjustment
• Check the condition of the diverter
cable before each use or after every
25 hours of operation.
SAFETY WARNING!
• Never operate Debris Blower with
out ALL GUARDS in place.
SAFETY WARNING!
• Before servicing or inspecting the
Debris Blower, make sure the power
 sourceisshuto󰀨andallmoving
parts have stopped.
• Disconnect the PTO shaft from the
tractor.
• Always wear safety glasses and
protective gloves when servicing
the Debris Blower.
Break-in Service
After the first hour of use:
1. Check belts. Re-tension if needed.
2. Tighten set screws on bearings.
3. Check nuts, bolts and fasteners to see
that they are secure.
Lubrication
1. Lubricate grease fittings on unit after
every 15 hours of use.
2. There are 8greasettings on the
unit:
2 on the PTO Shaft
2 on the Input Shaft
2 on the Impeller Shaft
1 on each Caster Wheel (2)
Adjustments Service & Maintenance
10

Debris Blower
Belts:
Problem: What to Check:
Belts Slip • Tension adjustment
• Load may be excessive
• Bearings may have seized.
Problem: What to Check:
Belts wear rapidly, jump, • Pulleys may not be properly aligned
catch, or twist. • Check with straightedge across face
of pulleys
Troubleshooting
Standard Torque Chart
Size In-lbs Ft-lbs N-M
No. 10-24 25-35 5-7 2.8-4.0
1/4 in. 60-80 18-20 7-9
5/16 in. 120-140 28-30 14-16
3/8 in. 340-360 64-74 24-27
1/2 in. 126-150 90-100
Note:
When tightening two or more screws on the same part, DO NOT tighten screws completely
right away, or one at a time. To avoid distortion, rst tighten all screws in sequence to one-third
of torque value, then tighten to two-thirds of torque value, then tighten to full value.
11

Debris Blower

Debris Blower
R
Debris
Blower
R
2/2012
Operator’s Manual
DB2700
DB3600
Parts SectionParts Section

Debris Blower

Debris Blower
Table of Contents
PARTS SECTION
DB2700
Components.....................................................
Lower Assembly................................................
Discharge Assembly.........................................
Caster Assembly...............................................
Hitch Assembly.................................................
Diverter Handle Assembly................................
Upper Fan Cover Assembly..............................
Shield w/ Decals...............................................
Discharge Decal Assembly...............................
Decal Installation..............................................
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
15

Debris Blower

Debris Blower
1.1
Parts List
DESCRIPTIONPART #QTYITEM
Assembly, Lower90515011
Assembly, Upper Fan Cover90515412
Installation, Decal90515713
Assembly, Cable
95500214
900204
REV:
A
DB2700 COMPONENTS
2
1
4
3

Debris Blower
1.2
Parts List
DESCRIPTIONPART #QTYITEM
1/4-20 U-TYPE TAPPED HOLE
11007121
SetScrew, 3/8-16 X 1.2511009362
NUT, 3/8-16 HEX JAM GR 211010723
BOLT, 1/2-13 X 2.25 GR 5 ZINC PLATE11012544
ROLL PIN, 3/16 X 1.511027925
KEY, 3/8 X 3/8 X 3.0 in
11034116
BOLT, 3/8-16 X 1.2511042587
BOLT, 1/2-13 X 1.511042948
NUT, 1/2-13 WIZ FLANGE11058849
NUT, 3/4-1011059611 0 NUT, 1/2-13110610
5
11
NUT, 3/8-16 LOCK NYLON INSERT11061881 2
WASHER, 1/2 FLAT SPECIAL 1.5 OD
11066081 3
WASHER, 1/2" LOCK11066641 4
BOLT, 3/4-10 X 3.5 TAP11071311 5
BOLT, 1/2-13 X 3 TAP11071411 6
NUT, 3/8-16 GR 511082641 7
WASHER, 1/2" FLAT SAE
11111911 8
KEY, 3/8 X 1/4 X 1.2511120011 9
KEY, 1/4 X 1/4 X 1.25 in51008922 0
BUSHING/IDLER71114012 1
IDLER, 2.9" OD X .668 ID X 1.82 W FLAT,
DAYCO 89102FD
74036612 2
Assembly, Discharge90515112 3
Assembly, Caster
90515222 4
Assembly, Hitch90515312 5
TURF ROLLER (8")91023722 6
ROLLER AXLE, SMALL DB91085612 7
MAIN FRAME91514412 8
SMALL IMPELLER WELDMENT
91514712 9
TENSIONER WELDMENT91515913 0
BEARING, PB SD 194000923 1
PILLOW BLOCK BEARING, (1.5)94010323 2
SMALL DB INPUT SHAFT94012113 3
DRIVE BELT (3VX425) 4 GROOVE
POWERBAND
94012213 4
SMALL DB FAN SHAFT94012913 5
SHEAVE 4/3V 3.65 - 161094217413 6
SHEAVE, 4/3V 10.6 - 251794217513 7
BUSHING, QD 1 1/2" SH94218113 8
BUSHING, QD 1" SH94218213 9
PTO shaft
94304514 0
905150 REV: NC
LOWER ASSEMBLY
23
5
26
27
28