Jrco 753 User manual

MODEL 753 Operator’s Manual
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800.966.8442
1
Operator’s Manual
7918-3.JRC
WARNING
READ AND UNDERSTAND THE OPERATOR’S MANUAL COMPLETELY BEFORE USING
THIS ATTACHMENT. ASSEMBLE, TEST AND USE ONLY IN ACCORDANCE WITH THE
OPERATOR’S MANUAL INSTRUCTIONS.

MODEL 753 Operator’s Manual
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800.966.8442
2
Table of Contents
1 Introduction................................................................................................................................................4
1.1 ....Application............................................................................................................................................................4
1.2 ....Navigating This Manual .................................................................................................................................4
1.3....Operation References/Terminology..........................................................................................................4
1.4 ....Owner Assistance ...............................................................................................................................................5
1.5 ....Model Identification .........................................................................................................................................5
1.6 ....Further Assistance.............................................................................................................................................6
2 Assembly and Set-up ...............................................................................................................................7
2.1 ....Frame Assembly Parts .....................................................................................................................................7
2.2 ....Caster Head Assembly Parts .........................................................................................................................9
2.3 ....Tools Required..................................................................................................................................................10
2.4 ....Power Unit Requirements...........................................................................................................................10
2.5 ....Unpacking Your Attachment.....................................................................................................................10
2.6 ....Torque Requirements ...................................................................................................................................10
2.7 ....General Assembly............................................................................................................................................10
2.8 ....Stabilizer Frame to Tow Tongues Assembly ......................................................................................11
2.9 ....Pivot Arms to Actuator Mount to Extension Harness Assembly................................................11
2.10..Wheels to Yokes Assembly ..........................................................................................................................11
2.11..Caster Bar to Top Pivot Assembly ...........................................................................................................12
2.12..Connecting Actuator .....................................................................................................................................12
2.13..Aerator Heads Assembly..............................................................................................................................12
2.14..Mount Hitch to Tow Vehicle.......................................................................................................................13
2.15..Connecting Power Wire to Vehicle Battery ........................................................................................13
2.16..Aerator to Hitch...............................................................................................................................................13
2.17..Battery Harness to Switch ..........................................................................................................................13
3 Operation Instructions ........................................................................................................................ 14
3.1 ....Before Operation.............................................................................................................................................14
3.2 ....Operator Safety................................................................................................................................................14
3.3 ....Operation............................................................................................................................................................15

MODEL 753 Operator’s Manual
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800.966.8442
3
4 Attachment Instructions..................................................................................................................... 16
5 Mounting Instructions ......................................................................................................................... 16
6 Dismounting Instructions................................................................................................................... 16
6.1 ....Removing Hooker Aerator..........................................................................................................................16
7 Storage Instructions ............................................................................................................................. 16
7.1 ....Storing Your Hooker Aerator....................................................................................................................16
8 Transporting Instructions.................................................................................................................. 17
8.1 ....Transporting Your Hooker Aerator .......................................................................................................17
9 Field Use Set-up and Instructions................................................................................................... 17
9.1 ....Field Preparation Hooker Aerator..........................................................................................................17
10 Maintenance Instructions................................................................................................................... 18
10.1..General.................................................................................................................................................................18
10.2..Daily Maintenance .........................................................................................................................................18
10.3..Seasonal Maintenance..................................................................................................................................18
11 Specifications........................................................................................................................................... 19
12 Warranty ................................................................................................................................................... 20

MODEL 753 Operator’s Manual
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800.966.8442
4
1Introduction
JRCO takes pride in its attachments and have designed and engineered quality, commercial
built attachments designed to help you efficiently and effectively be more productive at tasks.
1.1 Application
The JRCO Hooker Aerator, used for years as a front-mounted attachment for landscape
aeration, is now available in a 38”, three head tow-behind version.
The soft-plug style aeration is ideal for golf fairways, sports fields or anywhere true plug
aeration is needed, without the messy compacted core clean-up of a hollow tine aerator.
The JRCO Hooker Aerator is many times faster than traditional hollow tine aerators, and is
low maintenance with few moving parts and no engine.
The tines pierce deep into the soil, hooking and lifting loose plugs of dirt that disperse on
the surface, spreading nutrients over the surface. The turf can be played immediately after
aeration. Some operators choose to pull a drag over the surface one to three hours after
aeration to smooth the aerated surface. Use it in combination with over-seeding for
renovating distressed or diseased turf. Holes are approximately ½” wide by 1-1/4” long and
up to 3” deep. Soil volume removed is comparable with a 5/8” hollow tine core.
The Hooker tow-behind aerator comes complete with a two-point hitch, rigid frame and
swiveling caster wheels that allow the aerator to track directly behind the tow vehicle and
prevents jackknifing when backing up. The aerator caster heads swivel, allowing them to
turn while aerating. The six floating rotor heads lift independently over rocks and other
obstacles, while the other heads continue to aerate. An electric actuator lifts the heads into
the transport position.
1.2 Navigating This Manual
1. Use this manual to help familiarize yourself with safety, assembly, operation,
adjustments, troubleshooting, maintenance, specifications and warranty
information. It is very important that you read this manual and follow the
instructions to ensure safe operation of the attachment.
2. Please visit www.jrcoinc.com for updated information.
1.3 Operation References/Terminology
References throughout this manual referred to as “Right” or “Left” are determined by being
seated face-forward on Mower and facing the direction the unit will operate while in use.

MODEL 753 Operator’s Manual
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800.966.8442
5
1.4 Owner Assistance
Please complete the Warranty/Product Registration at the time of purchase. You will need
to fill out a new warranty card for your new unit and send it in, or you may visit our website
www.jrcoinc.com and complete our online registration form. We require this information
so we can keep you update to date with any important information about your attachment
and provide you with the best customer service possible.
The parts and components used on your JRCO Attachment have been specifically
engineered for JRCO Attachments and should only be replaced with JRCO parts. Contact
your local JRCO Dealer for replacement parts or contact our customer service department
for assistance in parts, locating your local servicing dealer and more. Your local dealer is
equipped and trained to handle service and repair for your attachment.
1.5 Model Identification
Please fill in your model and serial number below for future reference. This will help assist
in prompt service when ordering parts and service for your local JRCO Dealer.
Model No.___________753_______________________ Serial No. ________________________________________
Refer to the image below for location of your serial number plate:

MODEL 753 Operator’s Manual
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800.966.8442
6
1.6 Further Assistance
Your dealer and all of us at JRCO want you to be pleased with your attachment. Should you
require further assistance or have questions regarding your attachment, please contact your
local dealer where you purchased your attachment. If you are unable to satisfy your needs
by your local dealer, please contact us at:
JRCO
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800-966-8442
[e-mail]
www.jrcoinc.com

MODEL 753 Operator’s Manual
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800.966.8442
7
2Assembly and Set-up
2.1 Frame Assembly Parts

MODEL 753 Operator’s Manual
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800.966.8442
8
Ref
Part No.
Description
Qty
Ref
Part No.
Description
Qty
1
5026.JRC
Box Hitch
1
23
8093.JRC
HH Bolt, ½ x 5 ½”
2
2
7805-2.JRC
Stabilizer Frame
1
24
4233.JRC
2-way locknut, ½-13
2
3
8281.JRC
Frame Assembly
1
25
7915.JRC
Shaft Collar, 1”
2
4
7883.JRC
Tow Tongue
2
26
7583-1.JRC
Flange Bushing, 1”
4
5
7803-1.JRC
Pivot Arm
2
27
7281.JRC
Set Screw, 5/16-18 x
5
6
4003.JRC
Clevis Pin, ½ x 1 ¼”
2
28
7845.JRC
Clevis Pin 3/8 x2”
2
7
4009.JRC
Safety Clip
2
29
7251.JRC
Cotter Pin, 1/8 x 1 ½
1
8
7278.JRC
HH Bolt, 3/8 x 2 ½”
6
30
3047.JRC
Washer, 5/8” SAE
4
9
4236.JRC
2-way locknut, 3/8-16
10
31
7873.JRC
Flange Bushing, ¾”
18
10
7806-1.JRC
Pivot Rod
1
32
7816.JRC
Grease Fitting
8
11
7842-3.JRC
Aerator Head Assembly
3
33
7949.JRC
Extension Harness
1
12
7809-2.JRC
Actuator Mount
1
34
7851.JRC
Switch Harness
1
13
7833.JRC
Actuator
1
35
7430-4.JRC
Battery Harness
1
14
7914.JRC
Yoke
2
Fuse AGC-20
1
15
7867.JRC
Wheel, 9 x 3.5 x 4
2
36
7846.JRC
Cotter pin 1/8 x ¾”
3
16
7844-1.JRC
Caster bar Assembly
1
37
7243.JRC
Cable Tie, 11”
8
17
7808.JRC
Top Pivot
1
38
4671-3.JRC
Clamp Bar 3.3”
1
18
7308.JRC
HH Bolt, 3/8 x 3 ½”
2
39
8299.JRC
Reducer bushing
2
19
4684.JRC
Clevis Pin, 3/8 x 2 ¾”
1
52
7947-1.JRC
Actuator Link
2
20
7811.JRC
U-bolt, 3/8-16 x 2 x 2 ¾”
2
53
8261.JRC
Switch Bracket
1
21
3045.JRC
Hairpin cotter
3
54
4235.JRC
3/8” SAE washer
2
22
7828.JRC
Shaft Collar, ¾”
6
7859.JRC
Velcro Tie
2

MODEL 753 Operator’s Manual
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800.966.8442
9
2.2 Caster Head Assembly Parts
Ref
Part No.
Description
Qty/Unit
Qty/Head
31
7873.JRC
Flange bushing, ¾”
18
4
32
7816.JRC
Grease fitting
8
2
33
8288.JRC
Castle Nut, ½-20
6
2
34
3047.JRC
SAE Flatwasher, 5/8”
6
2
35
7846.JRC
Cotter Pin, 1/8 x ¾”
6
2
40
7904R.JRC
Casting, Right
3
1
41
7904L.JRC
Casting, Left
3
1
42
7908.JRC
Nylon Locknut, ½-20
6
4
44
7860.JRC
Tine Rotor
6
2
47
8267.JRC
Axle
6
2
48
8270.JRC
Bearing, 1 1/8 x 5/16 x ½”
12
4
49
7819.JRC
Machine Bushing, ¾”
12
4
50
7942.JRC
Snap Ring, ¾” External
6
2
51
7823-1.JRC
Caster Pin
3
1

MODEL 753 Operator’s Manual
20195 South Diamond Lake Road, STE 100
Rogers, MN 55374
800.966.8442
10
2.3 Tools Required
•Socket Wrench: 9/16” & ¾”
•Open or Box Wrench: 9/16” & ¾”
•Pliers
•Allen Wrench: 5/32”
•Grease gun
2.4 Power Unit Requirements
The Hooker Soft-Plug Aerator is designed to be attached to the JRCO hitch for mounting on zero
turn mowers, UTVs and lawn tractors.
2.5 Unpacking Your Attachment
Your Hooker Aerator will ship in 2 boxes. Carefully set the boxes on a flat working area. Carefully
unbox the attachment and verify that all fasteners and components are included.
2.6 Torque Requirements
Please reference the Torque Chart below for correct values when assembling your attachment.
3/8”
HH Bolts and Nuts
30 ft.-lbs.
¼”
HH Bolts and Nuts
8 ft.-lbs.
2.7 General Assembly
This attachment is shipped partially assembled. If purchased from a JRCO Dealer, the dealership
may assist in assembly of attachment. Review all safety and assembly instructions in this manual
before assembly.
CAUTION
Sharp edges
Heavy