Jacobsen GreensAire 24 58233 User manual

Technical Manual
Manual técnico
When Performance Matters.
™
ADVERTENCIA
Si se usa de forma incorrecta, esta máquina puede causar graves lesiones.
Cualquier persona que use y mantenga esta máquina debe estar entrenada
en su uso correcto, instruida de sus peligros y deberá leer todo el manual
antes de tratar de instalar, operar, ajustar o revisar la máquina.
WARNING
If incorrectly used, this machine can cause severe injury. Those who use
and maintain this machine should be trained in its proper use, warned of its
dangers and should read the entire manual before attempting to set up,
operate, adjust or service the machine
GB ES
Spanish
GreensAire®24
Model 58233
Modelo 58233
4186981-ES-Rev A

© Copyright 2009, Jacobsen, A Textron Company.
All rights reserved, including the right to reproduce this material
or portions thereof in any form.
This manual contains safety, operating, adjustment,
maintenance, troubleshooting instructions, and parts list
for your new Jacobsen® aerator. This manual should be
stored with the aerator for reference during operation.
Before you operate your aerator, you and each operator
you employ should read the manual carefully in its
entirety. By following the safety, operating, and
maintenance instructions, you will prolong the life of your
aerator and maintain its maximum efficiency.
If additional information is needed, contact your
Jacobsen Dealer.
The serial plate is located on the right side of the frame
near the engine. Jacobsen recommends you record
these numbers below for easy reference.
CHARLOTTE, NC
YEAR OF
PRODUCTION:
MADE IN U.S.A.
®
A Textron Company
2
Proposition 65 Warning
This product contains or emits
chemicals known to State of California
to cause cancer and birth defects or
other reproductive harm.
FOREWORD
Suggested Stocking Guide
To keep your aerator fully operational and productive, Jacobsen suggests you maintain a stock of the more commonly
used maintenance items. We have included part numbers for additional support materials and training aids.
To order any of the following material:
1. Write your full name and complete address on your
order form.
2. Explain where and how to make shipment:
❑UPS ❑Regular Mail
❑Overnight ❑2nd Day
3. Order by the quantity desired, the part number, and
the description of the part.
4. Send or bring the order to your authorized Jacobsen
Dealer.
Litho in U.S.A. 3-2009
Service Parts
Service Support Material
Qty. Part No. Description Qty. Part No. Description
548481 #50 Chain Connector Link
876431 #40 Chain Connector Link
4113436 Belt, Mechanism
4113435 Belt, Transport
4113437 Belt, 2 Rib Mechanism
Qty. Part No. Description
4186981 Technical Manual
Qty. Description

3
Table of Contents
1 Safety
1.1 Operating Safety ................................................ 4
1.2 Important Safety Notes ....................................... 5
2 Specifications
2.1 Product Identification.......................................... 6
2.2 Engine ................................................................ 6
2.3 Aerator ................................................................ 6
2.4 Aerator ................................................................ 7
2.5 Weights and Dimensions .................................... 7
2.6 Accessories & Support Literature ....................... 7
3 Decals and Icons
3.1 Decals ................................................................ 8
3.2 Icons ................................................................... 8
4 Controls
4.1 Control Descriptions ........................................... 9
5Operation
5.1 Daily Inspection ................................................ 11
5.2 Operator Presence Control (OPC) ................... 11
5.3 Operating Procedures ...................................... 12
5.4 Starting ............................................................. 12
5.5 Stopping / Parking ............................................ 13
5.6 To Drive / Transport ......................................... 13
5.7 Hillside Operation ............................................. 13
5.8 Aerating ............................................................ 14
5.9 Trailering .......................................................... 14
6 Adjustments
6.1 General............................................................. 15
6.2 Turf Guard ........................................................ 15
6.3 Aerator Drive Idler Cable .................................. 15
6.4 Traction Drive Idler Cable ................................. 16
6.5 Aerator Timing .................................................. 16
6.6 Shift Control Cable ........................................... 17
6.7 Lift Cable .......................................................... 17
6.8 Torque Specification ......................................... 18
7 Maintenance
7.1 General ............................................................ 19
7.2 Engine .............................................................. 19
7.3 Engine Oil ......................................................... 20
7.4 Engine Air Filter ................................................ 20
7.5 Fuel .................................................................. 20
7.6 Hydraulic Hoses ............................................... 21
7.7 Hydraulic Oil ..................................................... 21
7.8 Muffler and Exhaust ......................................... 22
7.9 Tires ................................................................. 22
7.10 Wheel Mounting Procedure .............................. 22
7.11 Care and Cleaning ........................................... 22
7.12 Pushrod Installation .......................................... 23
7.13 Storage ............................................................. 23
8 Troubleshooting
8.1 General ............................................................ 24
9 Maintenance & Lubrication Charts
9.1 General ............................................................ 25
9.2 Maintenance Charts ......................................... 25
10 tine selection guide
11
12 Parts Catalog
12.1 How To Use The Parts Catalog ....................... 27
12.2 To Order Parts ................................................. 27
12.1 Table Of Contents ............................................ 27

1 SAFETY
4
1 SAFETY
1.1 OPERATING SAFETY ______________________________________________________
1. Safety is dependent upon the awareness, concern,
and prudence of those who operate or service the
aerator. Never allow minors to operate any
equipment.
2. It is your responsibility to read this manual and all
publications associated with this aerator (Engine
Manual, accessories and attachments). If the
operator can not read English it is the owner’s
responsibility to explain the material contained in
this manual to them.
3. Learn the proper use of the aerator, the location and
purpose of all the controls before you operate the
equipment. Working with unfamiliar equipment can
lead to accidents.
4. Never allow anyone to operate or service the
aerator or its attachments without proper training
and instructions or while under the influence of
alcohol or drugs.
5. Wear all the necessary protective clothing and
personal safety devices to protect your head, eyes,
ears, hands, and feet. Operate the machine only in
daylight or in good artificial light.
6. Inspect the area where the equipment will be used.
Pick up all the debris you can find before operating.
Beware of overhead obstructions (low tree limbs,
electrical wires, etc.) and also underground
obstacles (sprinklers, pipes, tree roots, etc.) Enter a
new area cautiously. Do not enter narrow openings
that may force operator too close to aerator. Stay
alert for hidden hazards.
7. Never direct discharge of material toward
bystanders nor allow anyone near the aerator while
in operation. The owner/operator can prevent, and is
responsible for, injuries inflicted to themselves, to
bystanders, and damage to property.
8. Never operate equipment that is not in perfect
working order or is without decals, guards, shields,
discharge deflectors, or other protective devices
securely fastened in place.
9. Carbon monoxide in the exhaust fumes can be fatal
when inhaled. Never operate the engine without
proper ventilation.
10. Fuel is highly flammable. Handle with care.
11. Keep the engine clean. Allow the engine to cool
before storing and always remove the spark plug
wire.
12. Disengage all drives and engage parking brake
before starting the engine (motor).
13. Never use your hands to search for oil leaks.
Hydraulic fluid under pressure can penetrate the
skin and cause serious injury.
14. Operate the machine up and down the face of the
slopes (vertically) not across the face (horizontally).
15. To prevent tipping or loss of control, do not start or
stop suddenly on slopes. Reduce speed when
making sharp turns. Use caution when changing
direction on slopes.
This machine is to be operated and maintained as specified in this manual and is intended for the professional
maintenance of specialized turf grasses. It is not intended for use on rough terrain or long grasses.
WARNING
EQUIPMENT OPERATED IMPROPERLY OR BY UNTRAINED PERSONNEL CAN BE DANGEROUS.
Familiarize yourself with the location and proper use of all controls. Inexperienced operators should receive
instruction from someone familiar with the aerator before being allowed unsupervised operation of the aerator.
!

SAFETY 1
5
1.2 IMPORTANT SAFETY NOTES ________________________________________________
This safety alert symbol is used to alert you to potential hazards.
DANGER - Indicates an imminently hazardous situation which, if not avoided, WILL result in death or serious injury.
WARNING - Indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious
injury.
CAUTION - Indicates a potentially hazardous situation which, if not avoided, MAY result in minor or moderate injury
and property damage. It may also be used to alert against unsafe practices.
NOTICE - Indicates a potentially hazardous situation which, if not avoided, MAY result in property damage. It may
also be used to alert against unsafe practices.
For pictoral clarity, some illustrations in this manual may show shields, guards or plates open or removed. Under no
circumstances should this equipment be operated without these devices securely fastened in place.
By following all instructions in this manual you will prolong the life of your machine and maintain its maximum efficiency.
Adjustments and maintenance should always be performed by a qualified technician.
If additional information or service is needed, contact your Authorized Jacobsen Dealer who is kept informed of the
latest methods to service this equipment and can provide prompt and efficient service.
WARNING
The Operator Presence Control (OPC) on this machine will shut off the
aerator and traction drive if the operator releases the OPC handle.
To protect the operator and others from injury, never operate the aerator with
the OPC system disconnected or malfunctioning.
!
WARNING
1. Before leaving the operator’s position for any reason:
a. Release OPC handle.
b. Lower aerator head to the ground.
c. Stop engine.
d. Disconnect spark plug wire.
2. Keep hands, feet, and clothing away from moving parts. Wait for all
movement to stop before you clean, adjust, or service the machine.
3. Keep the area of operation clear of all bystanders and pets.
4. Never carry passengers.
5. Never operate mowing equipment without the discharge deflector
securely fastened in place.
!

2 SPECIFICATIONS
6
2 SPECIFICATIONS
2.1 PRODUCT IDENTIFICATION_________________________________________________
58233.............................. GreensAire 24 Aerator with OPC,
9 hp gasoline engine.
Serial Number ................ An identification plate, like the one
shown, listing the serial number, is
attached to the right side frame,
near the engine.
Always provide the serial number of the unit when ordering
replacement parts or requesting service information.
2.2 ENGINE__________________________________________________________________
Make ............................... Briggs & Stratton
Model .............................. Vanguard
Horsepower..................... 9 hp (6.71 kW) @3600 RPM
Displacement .................. 18.61 cu. in. (305 cc)
Bore x Stroke .................. 3.15 x 2.32 in. (80 x 59 mm)
Fuel:
Type .......................... Unleaded Gasoline
Rating ....................... Min. 85 Octane
Capacity.................... 2.5 U.S. gal. (9.5 liters)
Governor......................... Flyweight Mechanical
Lubrication:
Capacity.................... 28 oz. (0.8 liters)
Type .......................... SAE 30W
API Classification ..... SG, SH, SJ
Air Filter .......................... Replaceable Dual Element
Cooling System .............. Air Cooled
2.3 AERATOR________________________________________________________________
Spacing........................... 2 in. (51 mm) on center
Depth of Penetration ....... 3 in. (76 mm) maximum
Standard Tines
Type .......................... Hollow, Tapered
Material ..................... Case Hardened Steel
Quantity .................... Two sets 1/2 in. (13 mm) diameter
Tine Options
Solid.......................... 1/4 in. (6 mm) Quad Tines
Hollow ....................... 1/4 in. (6 mm), 3/8 in. (9 mm),
5/8 in. (16 mm)
Swath Width.................... 24 in. (609 mm)
Product EEC Sound Power Vibration M/S2
Arms
58233 105 4.335
CHARLOTTE, NC
YEAR OF
PRODUCTION:
MADE IN U.S.A.
®
A Textron Company
58233 1601
xxxx
NOTICE
Do not use premium gasoline or an oil-gasoline
mixture. When using blended fuel, do not use a blend
with more than 10% ethanol. Under no circumstances
should you use a blend with methanol.

SPECIFICATIONS 2
7
2.4 AERATOR ________________________________________________________________
Tires
Front..........................11 x 4.00 - 5 2 Ply
Rear .......................... 16 x 6.50 - 8 4 Ply
Pressure:................... 14 psi (97 kPa)
Speed:
H (Transport) ............ 0 - 4.0 mph (6.4 kph)
L (Aerate).................. 0 - 0.9 mph (1.4 kph)
R (Reverse)............... 0 - 1.8 mph (2.9 kph)
Hydraulic System:
Capacity.................... 2 U.S. gal. (7.57 liters)
Fluid Type ................. GreensCare 68™
Aerator Head Lift....... Hydraulic Double Acting Cylinders
2.5 WEIGHTS AND DIMENSIONS ________________________________________________
Dimensions: Inches (mm)
Length ............................................................. 72 (1676)
Width............................................................ 49.5 (1257)
Height.............................................................. 48 (1219)
Weights: Lbs. (kg)
Working Weight Less Fuel ............................ 850 (386)
2.6 ACCESSORIES & SUPPORT LITERATURE _____________________________________
Contact your area Jacobsen Dealer for a complete listing of accessories and attachments.
Accessories
Air Blow Gun ...........................................................JAC5098
Orange Touch-up Paint (12 oz. spray) .................... 4184140
Solid Quad Tine Accessory..................................... 4116987
Coring Quad Tine Accessory.................................. 4116986
Pushrod Installation Tool ........................................... 517693
Windrow Attachment Accessory ............................... 544918
Tines
1/4 in. (6 mm) Coring, 5/8 in. O.D. ............................ 517486
1/4 in. (6 mm) Solid, 1/2 in. O.D. ............................... 523863
3/8 in. (9 mm) Coring, 5/8 in. O.D. ............................ 517487
1/2 in. (13 mm) Coring, 5/8 in. O.D. .......................... 517488
1/2 in. (13 mm) Heavy Duty Coring, 5/8 in. O.D. ....... 523995
1/2 in. (13 mm) Carbide Tipped Coring, 5/8 in. O.D.. 547183
5/8 in. (16 mm) Coring, 3/4 in. O.D. .......................... 517489
VenTine, 5/8 in. O.D. ............................................... 2702060
DuraTines
1/4 in. (6 mm) Coring, 1/2 in. O.D. (XLT)................. 4180561
1/4 in. (6 mm) Solid, 1/2 in. O.D. (XL) ..................... 4180562
1/4 in. (6 mm) Solid, 5/8 in. O.D. (XL) ..................... 4180563
3/8 in. (9 mm) Solid, 5/8 in. O.D. (XL) ..................... 4180564
5/8 in. (16 mm) Solid, 3/4 in. O.D. (XL) ................... 4180573
Support Literature
Technical Manual .....................................................4186981
Operator Training Video...........................................4130949
CAUTION
Use of other than Jacobsen authorized parts and accessories may cause personal injury or damage to the
equipment.
!

3 DECALS AND ICONS
8
3 DECALS AND ICONS
3.1 DECALS _________________________________________________________________
Familiarize yourself with the decals as they are critical to the safe operation of the aerator.
REPLACE DAMAGED DECALS IMMEDIATELY.
3.2 ICONS ___________________________________________________________________
WARNING
Never attempt to operate the aerator unless you have read the Technical Manual and know
how to operate all controls correctly.
Familiarize yourself with the icons shown above and what they represent. Learn the
location and purpose of all the controls before operating the aerator.
4164281
4164381
840891
Read Manual Engine Throttle
Fast Choke Slow
Fuel Tine Lever
Lift Lower
OPC
Release
Tine
Engage
!

CONTROLS 4
9
4 CONTROLS
4.1 CONTROL DESCRIPTIONS __________________________________________________
A. Clutch Control Lever
Clutch control lever engages and disengages power
to tine operation clutch and latches OPC handle. Pull
lever until OPC handle (E) closes for transport. Pull
handle until it clicks and locks in place for tine
operation. Release the OPC handle to disengage.
B. Throttle
Controls the ground speed of the unit. Position lever
between Slow and Fast to set desired ground speed.
Fully raise lever to Stop position to shut off engine.
C. Shift Control Lever
Four position lever used to operate different functions
of machine.
R (Reverse): Engages reverse traction. Tine
operation is locked out.
N (Neutral): Disengages both traction and tine
operation.
H (High): Engages transport speed only. Tine
operation is locked out.
L (Low): Engages aerating traction speed. Tine
operation can be engaged.
A
L
H
N
R
C
D
B
E
F
G
AClutch Control Lever
BThrottle
CShift Control Lever
DTine Lever
EOPC Handle
FEngine Switch
GChoke
WARNING
Damage to turf and/or aerator may occur if aerator
head is not fully raised before engaging OPC handle
with shift control lever (C) in R (Reverse) or H (High)
position.
!

4 CONTROLS
10
D. Tine Lever
Raises and lowers aerator head. Lift lever to Raise
position to raise head. Push lever to Lower position to
lower head.
E. OPC Handle
Engages and disengages drive clutch. Returns
clutch control lever (A) to disengaged position when
released.
F. Engine Switch
Controls engine operation. Move switch to ON
position for normal operation. Move switch to OFF
position to shut unit off or when adjusting, trailering,
or storing unit.
G. Choke
The choke lever opens and closes the choke valve in
the carburetor. The Closed position enriches the fuel
mixture for starting a cold engine. The Open position
provides the correct fuel mixture for operation after
starting and for restarting a warm engine.
WARNING
To prevent injury from hot hydraulic oil, the Tine Lever
must be returned to the Neutral position after raising or
lowering the unit. If the lever sticks or is held in the
Raise or Lower position, the hydraulic fluid will
overheat, possibly causing a hydraulic line to rupture.
!
A
L
H
N
R
C
D
B
E
F
G

OPERATION 5
11
5 OPERATION
5.1 DAILY INSPECTION _______________________________________________________
1. Perform a visual inspection of the entire aerator,
looking for signs of wear, loose hardware, and
missing or damaged components. Check for fuel or
oil leaks to ensure connections are tight and hoses
and tubes are in good condition.
2. Check the hydraulic oil level, fuel supply, crankcase
oil, and air cleaner. All fluids must be at the Full
level mark with engine cold.
3. Check tires for proper inflation.
5.2 OPERATOR PRESENCE CONTROL (OPC)_____________________________________
1. The OPC system is intended to protect the operator
and others from injury by stopping the aerator and
drive mechanism as soon as the operator releases
the OPC handle.
2. Test OPC system.
a. Start the engine and place throttle (B) at Slow.
Fully raise aerator head.
b. Place shift control (C) in R (Reverse) position. In
this position, unit will move away from operator
when testing.
c. Pull clutch control lever (A) slightly until OPC
handle (E) can be engaged. Do not engage tine
operation.
d. The drive mechanism will engage and the unit
will slowly move backward.
e. Release the OPC handle. The handle must come
up and the wheels must stop. Shut off engine.
f. Place shift control (C) in L (Low) position.
g. Pull clutch control lever (A) slightly until OPC
handle (E) can be engaged. Engage tine
operation.
h. Release the OPC handle (E). The clutch control
lever (A) must return to disengaged position and
OPC handle must come up.
i. Check each position of shift control lever (C).
Tine operation should only engage with lever in L
(Low) position.
3. Stop the engine immediately and have the system
repaired if any of the following occurs:
a. The wheels begin to turn before the OPC handle
is engaged.
b. The wheels continue to turn after the OPC
handle is released.
c. Clutch control lever does not return to
disengaged position.
CAUTION
The daily inspection should be performed only when
the engine is off and all fluids are cold. Lower aerator
head to the ground, stop engine, and disconnect
spark plug wire.
!
WARNING
Never operate equipment with the OPC system
disconnected or malfunctioning.
!
With Engine Running
Shift
Control
Position
OPC Handle
Wheels
Turn
Engaged Disengaged
RNo
RYes
Without Engine Running
Can Clutch
Lever be Fully
Engaged
Gear Selector
RNH L
No No No Yes

5 OPERATION
12
5.3 OPERATING PROCEDURES_________________________________________________
1. Before starting engine, always release OPC handle.
2. Do not operate aerator or attachments with loose,
damaged, or missing components.
3. First aerate in a test area to become thoroughly
familiar with the operation of the aerator and control
levers.
4. Study the work area to determine the best and
safest operating procedure. Consider the type of
terrain and condition of the surface. Each condition
will require certain adjustments or precautions.
5. Never direct discharge of material toward
bystanders nor allow anyone near the aerator while
in operation. The owner/operator is responsible for
injuries inflicted to bystanders and/or damage to
their property.
6. Use discretion when operating near gravel areas
(roadways, parking areas, cart paths, etc.). Stones
struck by the aerator may cause serious injuries to
bystanders and/or damage the aerator.
7. Always raise aerator head and move control lever
out of L position when not aerating.
8. Disengage the tines and raise the aerator head
when crossing paths or roadways. Look out for
traffic.
9. Stop and inspect the equipment for damage
immediately after striking any obstruction or if the
machine begins to vibrate abnormally. Have the
equipment repaired before resuming operation.
10. Slow down and use extra care on hillsides. Read
Section 5.7. Use caution when operating near drop
offs.
11. Use care when approaching blind corners, shrubs,
trees, or other objects that may obscure vision.
12. Never use your hands to clean aerator. Tine edges
are sharp and can cause serious injuries.
5.4 STARTING _______________________________________________________________
1. Check engine crankcase oil levels.
2. Fill fuel tank with fresh, clean unleaded fuel.
3. Turn engine switch to ON position.
4. Place Shift Control Lever (C) in Neutral and
disengage clutch control (A).
5. Move Throttle lever (B) to 1/2 throttle.
6. Pull recoil starter located on right side of engine.
Choke as required to start engine.
7. Allow the engine to become warm and properly
lubricated before operating at high RPM.
Figure 5A
CAUTION
To prevent injury, always wear safety glasses, leather work shoes or boots, a hard hat, and ear protection.
!
CAUTION
Before operating the aerator, pick up all debris such
as rocks, toys, and wire which may be thrown by the
machine. Enter a new area cautiously. Always operate
at speeds that allow you to have complete control of
the aerator.
!
WARNING
Before you clean, adjust, or repair the aerator,
always disengage all drives, lower aerator head
to the ground, stop engine, and disconnect spark
plug wire to prevent injuries.
!
A
L
H
N
R
C
D
B
E

OPERATION 5
13
5.5 STOPPING / PARKING______________________________________________________
To stop:
Release OPC handle (E) to bring unit to a complete stop.
To park the aerator under normal conditions:
1. Release OPC handle (E), raise the aerator head (D).
Move Shift Control Lever (C) to H position, engage
OPC handle and move away from the area of
operation.
2. Select a flat and level area to park.
a. Release OPC handle (E) to bring unit to a com-
plete stop.
b. Lower aerator head (D) to the ground, reduce
throttle to slow, and allow engine to operate at no
load for several minutes.
3. Move engine switch to OFF position.
If an emergency arises and the unit must be parked in the
area of operation, follow the guidelines outlined by the
grounds superintendent. If the unit is parked on an
incline, chock or block the wheels.
5.6 TO DRIVE / TRANSPORT ____________________________________________________
Read and follow all safety notes contained in this manual
when driving or transporting aerator. Refer to Section 5.3
for general operating instructions. When operating in
Reverse look behind you to ensure you have a clear path.
1. Release OPC handle (E) and raise aerator head (D).
2. Set Throttle lever (B) to Slow.
3. Move Shift Control Lever (C) to H position and
engage OPC handle (D) to drive to and from the
area of operation.
4. Adjust Throttle lever (B) to desired transport speed.
5.7 HILLSIDE OPERATION _____________________________________________________
The aerator has been designed for good traction and
stability under normal conditions, however, use caution
when operating on inclines, especially over rough terrain
or when the grass is wet. Wet grass reduces traction and
steering control.
1. Always operate the aerator at reduced forward speed
to maintain control.
2. If the aerator tends to slide or the tires begin to
mark the turf, angle aerator into a less steep grade
until traction is regained or tire marking stops.
3. If aerator continues to slide or mark the turf, the
grade is too steep for safe operation. Do not make
another attempt to climb and back down slowly.
Correct tire pressure is essential for maximum traction.
Front: 14 psi (97 kPa).
Rear: 14 psi (97 kPa).
CAUTION
When transporting, operate the aerator in such a
manner to allow you to see the path ahead and
quickly move away from the aerator should you
accidentally lose control.
!
WARNING
To minimize the possibility of overturning, the safest
method for operating on hills and terraces is to travel
up and down the face of the slope (vertically), not
across the face (horizontally). Avoid unnecessary
turns, travel at reduced speeds, stay alert for hidden
hazards, and avoid drop offs.
CAUTION
Do not operate on inclines greater than 20°.
!
!

5 OPERATION
14
5.8 AERATING _______________________________________________________________
To Aerate:
1. Start the engine and raise aerator head.
2. Move Shift Control Lever to L position.
3. Move Throttle lever to Slow. Stand to the side of
aerator and slowly engage OPC handle.
a. Adjust throttle to desired walking speed after
aerator is in motion.
b. Pull Clutch Control Lever until it clicks and locks
in tine operation position.
c. At proper starting point on turf, fully lower aerator
head by pushing down on the Tine Lever.
4. To stop aerating, pull up on the Tine Lever to raise
aerator head. Disengage OPC handle.
5.9 TRAILERING______________________________________________________________
If the aerator experiences problems and must be shut
down and removed from the work area, the aerator
should be loaded onto a trailer for transport.
Use care when loading and unloading aerator. Tines may
drag or catch on trailer ramp. To prevent push rods from
being bent, remove the two lowest positioned tines.
Fasten aerator to trailer to prevent rolling or shifting
during transport.
Long Distance Trailering / Transport. If the aerator is to
be trailered on the highway, before strapping to trailer,
inflate tires to:
Front - 22 psi (152 kPa).
Rear - 22 psi (152 kPa).
After unloading aerator, reduce tire pressure to normal
operating pressure. See Section 5.7
WARNING
To prevent serious injuries, keep hands, feet, and
clothing away from aerator mechanism.
NEVER use your hands to clean aerator. Tine edges
are sharp and could cause injuries.
To clear obstructions from tine, disengage master
clutch, raise aerator head, stop engine, and
disconnect spark plug wire. Only then can the
obstruction be safely removed.
!

ADJUSTMENTS 6
15
6 ADJUSTMENTS
6.1 GENERAL ________________________________________________________________
1. Adjustments and maintenance should always be
performed by a qualified technician. If proper
adjustment cannot be made, contact an authorized
Jacobsen Dealer.
2. Replace, do not adjust, worn or damaged
components.
3. Long hair, jewelry, or loose fitting clothing may get
tangled in moving parts. Remove jewelry, tuck in
loose fitting clothing, and tuck long hair under a cap.
4. Do not change governor settings or overspeed the
engine.
6.2 TURF GUARD _____________________________________________________________
The Turf Guard (C) is used to prevent the turf from lifting
up as cores are pulled out. The pressure on the turf
guard can be adjusted by increasing or decreasing
tension on the springs (A).
Add or remove spacers (B) above spring as necessary to
ensure the turf guard provides enough pressure to
prevent turf from lifting up but not so much that the turf
guard marks or cuts the turf.
Figure 6A
6.3 AERATOR DRIVE IDLER CABLE _____________________________________________
1. Engage OPC handle and tine operation.
[ See Section 4.1]
2. Adjust cable nuts (D) as necessary to obtain 0.18
inch (3.3 mm) deflection with a 4.4 lb (2.0 kg) push
for new belt or 3.0 lb (1.4 kg) push for used belt at
location shown.
3. Addition adjustment available if required by moving
cable bracket and at handle.
Figure 6B
WARNING
To prevent injury, disengage master clutch, lower
aerator head to the ground, stop engine, and
disconnect spark plug wire before making any
adjustments or performing maintenance.
Make sure the aerator is parked on a solid and level
surface. Never work on a aerator that is supported
only by a jack. Always use jack stands.
If only the front or rear of the aerator is raised, place
chocks in front of and behind the wheels that are not
raised.
!
CAUTION
Be careful to prevent entrapment of the hands and
fingers between moving and fixed components of the
aerator.
WARNING
To prevent injury, support upper frame with blocks
when working on aerator with aerator head raised.
Hydraulic lines may rupture or lever could be
accidentally tripped, causing aerator head to drop
rapidly.
!
!
A
B
C
D
0.18 inch (3.3 mm)
4.4 lb (1.81 kg) New
3.0 lb (1.36 kg) Used

6 ADJUSTMENTS
16
6.4 TRACTION DRIVE IDLER CABLE _____________________________________________
1. Engage OPC handle. [ See Section 4.1]
2. Adjust cable nuts (E) as necessary to obtain 0.18
inch (3.3 mm) deflection with a 4.4 lb (2.0 kg) push
for new belt or 3.0 lb (1.4 kg) push for used belt at
location shown.
3. Addition adjustment available at handle end of cable
or by moving cable bracket.
4. Test handle operation. When OPC handle is
engaged, parking brake (F) should release and idler
pulley should engage traction drive.
6.5 AERATOR TIMING _________________________________________________________
Note: Improper timing between the aerator crankshaft
and the camshaft will cause elongated holes while
aerating and excessive noise in the camcase.
1. Remove shields from both sides of unit.
2. Remove aerator chain connecting crankshaft to
camshaft from both sides of unit.
3. Loosen stud between crankshaft halves.
4. Rotate right camshaft sprocket (G) until the keyway
is pointing towards the front of the unit. Timing
marks should be at a 45° angle with dot towards the
lower front. [See Figure 6D]
5. Rotate right side crankshaft sprocket (H) until the
timing marks are horizontal with the dot towards the
front. Keyway should be at a 45° angle.
6. Install right side aerator chain (J). Crankshaft
sprocket may be rotated up to 5° in a clockwise
direction only to properly mesh with the chain.
7. Rotate left crankshaft sprocket (K) until the timing
marks are vertical and dot is towards the ground.
[See Figure 6E]
8. Install left side aerator chain (L). Crankshaft
sprocket may be rotated up to 5° in a counter-
clockwise direction only to properly mesh with the
chain.
9. Tighten stud between crankshaft halves.
10. Install shields. Do not operate aerator without all
shields properly installed.
Figure 6C
Figure 6D
E
F
0.18 inch (3.3 mm)
4.4 lb (1.81 kg) New
3.0 lb (1.36 kg) Used
Timing Marks
Horizontal
Timing Marks
45° Angle
Dot towards
lower front
Dot towards
front
Front
Right Side Aerator Chain
G
H
J
Left Side Aerator Chain
Front
Timing Marks
Ver tical
Dot towards
ground
K
L

ADJUSTMENTS 6
17
6.6 SHIFT CONTROL CABLE____________________________________________________
If traction drive system does not shift properly,
adjustment of the shift control cable may be required.
1. Disconnect clevis (N) from shift lever (P).
2. Place the shift control lever in the L position.
3. Rotate shift lever (P) clockwise until it locks into the
low speed detent.
4. Adjust cable nuts (M) as necessary until clevis (N)
aligns with mounting hole in lever (P).
5. If additional adjustment is required, cable may be
adjusted at the handle.
6. Test each position of shift control. Shift lever (P)
should lock into each detent at each stop of shift
control.
Figure 6E
6.7 LIFT CABLE ______________________________________________________________
If aerator head does not raise or lower properly,
adjustment of the lift cable may be required.
1. Loosen both cable nuts (R). Lift valve should
automatically return to center.
2. Place lift control handle in center (Neutral) position.
3. Tighten nuts (R).
4. Test operation of lift control.
Figure 6F
M
N
P
R

6 ADJUSTMENTS
18
6.8 TORQUE SPECIFICATION___________________________________________________
Jacobsen uses Grade 5 bolts as standard, unless otherwise noted.
NOTICE
All torque values included in these charts are approximate and are for reference only. Use of these torque values is
at your sole risk. Jacobsen is not responsible for any loss, claim, or damage arising from the use of these charts.
Extreme caution should always be used when using any torque value.
AMERICAN NATIONAL STANDARD FASTENERS
SIZE UNITS GRADE 5 GRADE 8
#6-32 in-lbs (Nm) 20 (2.3) –
#8-32 in-lbs (Nm) 24 (2.7) 30 (3.4)
#10-24 in-lbs (Nm) 35 (4.0) 45 (5.1)
#10-32 in-lbs (Nm) 40 (4.5) 50 (5.7)
#12-24 in-lbs (Nm) 50 (5.7) 65 (7.3)
1/4-20 in-lbs (Nm) 95 (10.7) 125 (14.1)
1/4-28 in-lbs (Nm) 95 (10.7) 150 (17.0)
5/16-18 in-lbs (Nm) 200 (22.6) 270 (30.5)
5/16-24 in-lbs (Nm) 240 (27.1) 300 (33.9)
3/8-16 ft-lbs (Nm) 30 (40.7) 40 (54.2)
3/8-24 ft-lbs (Nm) 35 (47.5) 45 (61.0)
7/16-14 ft-lbs (Nm) 50 (67.8) 65 (88.1)
7/16-20 ft-lbs (Nm) 55 (74.6) 70 (94.9)
1/2-13 ft-lbs (Nm) 75 (101.7) 100 (135.6)
1/2-20 ft-lbs (Nm) 85 (115.3) 110 (149.2)
9/16-12 ft-lbs (Nm) 105 (142.4) 135 (183.1)
9/16-18 ft-lbs (Nm) 115 (155.9) 150 (203.4)
5/8-11 ft-lbs (Nm) 150 (203.4) 195 (264.4)
5/8-18 ft-lbs (Nm) 160 (217.0) 210 (284.8)
3/4-10 ft-lbs (Nm) 170 (230.5) 220 (298.3)
3/4-16 ft-lbs (Nm) 175 (237.3) 225 (305.1)
7/8-14 ft-lbs (Nm) 300 (406.8) 400 (542.4)
AMERICAN NATIONAL STANDARD FASTENERS
SIZE UNITS GRADE 5 GRADE 8
METRIC FASTENERS
SIZE UNITS
Non Critical
Fasteners into
Aluminum
M4 Nm (in-lbs) 1.2 (11) 1.7 (15) 2.9 (26) 4.1 (36) 5.0 (44) 2.0 (18)
M5 Nm (in-lbs) 2.5 (22) 3.2 (28) 5.8 (51) 8.1 (72) 9.7 (86) 4.0 (35)
M6 Nm (in-lbs) 4.3 (38) 5.7 (50) 9.9 (88) 14.0 (124) 16.5 (146) 6.8 (60)
M8 Nm (in-lbs) 10.5 (93) 13.6 (120) 24.4 (216) 33.9 (300) 40.7 (360) 17.0 (150)
M10 Nm (ft-lbs) 21.7 (16) 27.1 (20) 47.5 (35) 66.4 (49) 81.4 (60) 33.9 (25)
M12 Nm (ft-lbs) 36.6 (27) 47.5 (35) 82.7 (61) 116.6 (86) 139.7 (103) 61.0 (45)
M14 Nm (ft-lbs) 58.3 (43) 76.4 (55) 131.5 (97) 184.4 (136) 219.7 (162) 94.9 (70)
4.8 5.8 8.8 10.9 12.9

MAINTENANCE 7
19
7 MAINTENANCE
7.1 GENERAL ________________________________________________________________
1. Adjustment and maintenance should always be
performed by a qualified technician. If proper
adjustments cannot be made, contact an authorized
Jacobsen Dealer.
2. Inspect the aerator on a daily basis. Establish a
maintenance schedule and keep detailed records.
a. Keep the aerator clean.
b. Keep all moving parts properly adjusted and lubri-
cated.
c. Replace worn or damaged parts before operating
the aerator.
d. Keep all fluids at their proper levels.
e. Keep shields in place and all hardware securely
fastened.
f. Keep tires properly inflated.
3. Long hair, jewelry, or loose fitting clothing may get
tangled in moving parts.
4. Use the illustrations in the Parts Catalog as reference
for the disassembly and assembly of components.
5. Recycle or dispose of all hazardous materials
(batteries, fuel, lubricants, antifreeze, etc.) according to
federal, state, and local regulations.
7.2 ENGINE _________________________________________________________________
IMPORTANT: A separate Engine Manual, prepared by
the engine manufacturer, is supplied with this unit.
Read the Engine Manual carefully until you are familiar
with the operation and maintenance of the engine.
Proper attention to the engine manufacturer’s directions
will assure maximum service life of the engine. To order
a replacement Engine Manual contact the engine
manufacturer.
The proper break-in of a new engine can make a
considerable difference to the performance and life of the
engine.
Note: The aerator is designed to operate most efficiently at
the preset governor setting. Do not change the engine
governor settings or overspeed the engine.
During the break-in period, Jacobsen recommends the
following:
1. Operate modestly for the first 25 hours at reduced
engine speed.
2. Avoid full throttle starts and rapid acceleration.
3. Allow the engine to reach operating temperature before
operating at full load.
4. Change the oil and filter after the first 5 hours of
operation.
5. Refer to Section 9.2 and the Engine Manual for
specific maintenance intervals.
WARNING
Before you clean, adjust, or repair the aerator,
disengage all drives, lower aerator head to the ground,
stop engine, and disconnect spark plug wire to prevent
injuries.
Make sure the aerator is parked on a solid and level
surface. Never work on an aerator that is supported only
by a jack. Always use jack stands.
!

7 MAINTENANCE
20
7.3 ENGINE OIL ______________________________________________________________
Check the engine oil at the start of each day, before starting
the engine. If the oil level is low, remove oil filler cap and add
oil as necessary.
Perform initial oil change after the first 5 hours of operation.
Change oil every 25 hours thereafter.
See the Engine Manual for detailed service information.
After adding or changing oil, start and run engine at idle with
all drives disengaged for 30 seconds. Shut engine off. Wait
30 seconds and check oil level. Add oil to bring up to FULL
mark on dipstick.
Use only engine oils with API classification SG, SH, or SJ.
Figure 7A
7.4 ENGINE AIR FILTER _______________________________________________________
1. Remove and service the foam pre-cleaner every 25
hours. Replace if damaged.
To service pre-cleaner, wash in a liquid detergent and
warm water. Rinse thoroughly and squeeze dry in a
clean cloth. Saturate in clean engine oil and squeeze
out excess oil in a clean, absorbent cloth.
2. Replace the paper air cleaner element every 100
hours, more often when operating in dusty conditions.
Note: Always replace the paper element. Do not wash
or use pressurized air to clean cartridge.
See the Engine Manual for detailed service information.
7.5 FUEL ____________________________________________________________________
Fuel is highly flammable. Handle with care. Use an
approved container. The spout must fit inside the fuel filler
neck. Avoid using cans and funnels to transfer fuel.
• Fill the fuel tank to within 1 in. (25 mm) of the bottom of
the filler neck.
• Store fuel according to federal, state, and local ordinances
and recommendations from your fuel supplier.
• Never overfill fuel tank.
Gas Engine:
• Use clean, fresh, regular grade unleaded gasoline with a
minimum 85 Octane rating.
Above 32° F (0° C) SAE 30W
Below 32° F (0° C) SAE 5W20 or SAE 5W30
FULL
ADD
Operating
Range
FULL
mark
WARNING
Never remove the fuel cap from the fuel tank or add fuel
when the engine is running or while the engine is hot.
Do not smoke when handling fuel. Never fill or drain the
fuel tank indoors.
Do not spill fuel. If fuel is spilled, clean spilled fuel
immediately.
Never handle or store fuel containers near an open flame
or any device that may create sparks and ignite the fuel
or fuel vapors.
Be sure to install and tighten fuel cap securely.
!
NOTICE
Do not use premium gasoline or an oil-gasoline
mixture. When using blended fuel, do not use a blend
with more than 10% ethanol. Under no circumstances
should you use a blend with methanol.