Toro Greens Aerator User manual

Part No. 04133SL
Service Manual
Greens Aerator
Preface
The purpose of this publication is to provide the service
technician with information for troubleshooting, testing
and repair of major systems and components on the
Greens Aerator.
REFER TO THE OPERATOR’S MANUALS FOR OP-
ERATING, MAINTENANCE AND ADJUSTMENT
INSTRUCTIONS. Space is provided in Chapter 2 of this
book to insert the Operator’s Manuals and Parts Cata-
logs for your machine. Replacement Operator’s Manu-
als are available on the internet at www.toro.com or by
sending complete Model and Serial Number to:
The Toro Company
Attn. Technical Publications
8111 Lyndale Avenue South
Minneapolis, MN 55420
The Toro Company reserves the right to change product
specifications or this publication without notice.
or CAUTION, PERSONAL SAFETY INSTRUC-
This safety symbol means DANGER, WARNING,
TION. When you see this symbol, carefully read
the instructions that follow. Failure to obey the
instructions may result in personal injury.
NOTE: A NOTE will give general information about the
correct operation, maintenance, service, testing or re-
pair of the machine.
IMPORTANT: The IMPORTANT notice will give im-
portant instructions which must be followed to pre-
vent damage to systems or components on the
machine.
The Toro Company – 2004

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Greens Aerator

Table Of Contents
Chapter 1 – Safety
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 2
Jacking Instructions . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 4
Safety and Instruction Decals . . . . . . . . . . . . . . . . 1 – 5
Chapter 2 – Product Records and Maintenance
Product Records . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1
Equivalents and Conversions . . . . . . . . . . . . . . . . 2 – 2
Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . 2 – 3
Chapter 3 – Engine
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 2
Service and Repairs . . . . . . . . . . . . . . . . . . . . . . . . 3 – 5
BRIGGS & STRATTON REPAIR MANUAL FOR
4–CYCLE, V–TWIN CYLINDER, OHV HEAD ENGI-
NES
KOHLER MAGNUM SERVICE MANUAL
Chapter 4 – Hydraulic System
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 2
General Information . . . . . . . . . . . . . . . . . . . . . . . . 4 – 3
Hydraulic Schematic . . . . . . . . . . . . . . . . . . . . . . . . 4 – 6
Hydraulic System Operation . . . . . . . . . . . . . . . . . 4 – 7
Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 8
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 9
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 11
Service and Repairs . . . . . . . . . . . . . . . . . . . . . . . 4 – 14
Greens Aerator
Chapter 5 – Electrical System
Electrical Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 1
Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 2
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 3
Electrical System Quick Checks . . . . . . . . . . . . . . 5 – 5
Component Testing . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 7
Service and Repairs . . . . . . . . . . . . . . . . . . . . . . . 5 – 16
Chapter 6 – Chassis
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 2
Service and Repairs . . . . . . . . . . . . . . . . . . . . . . . . 6 – 4
Chapter 7 – Drive Train
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 2
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 3
Service and Repairs . . . . . . . . . . . . . . . . . . . . . . . . 7 – 4
Chapter 8 – Coring Head
General Information . . . . . . . . . . . . . . . . . . . . . . . . 8 – 2
Service and Repairs . . . . . . . . . . . . . . . . . . . . . . . . 8 – 4
Chapter 9 – Electrical Diagrams
Electrical Schematics . . . . . . . . . . . . . . . . . . . . . . . 9 – 3
Wire Harness Drawings . . . . . . . . . . . . . . . . . . . . . 9 – 5
SafetyProduct Records
and Maintenance
Engine
Hydraulic
System
Electrical
System
ChassisCoring HeadElectrical
Diagrams Drive Train

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Greens Aerator

Chapter 1
Safety
Safety
Table of Contents
SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . 2
Before Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
While Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Maintenance and Service . . . . . . . . . . . . . . . . . . . . 3
JACKING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . 4
SAFETY AND INSTRUCTION DECALS . . . . . . . . . . 5
Greens Aerator Page 1 – 1 Safety

Safety Instructions
The Greens Aerator is designed and tested to offer safe
service when operated and maintained properly. Al-
though hazard control and accident prevention partially
are dependent upon the design and configuration of the
machine, these factors are also dependent upon the
awareness, concern and proper training of the person-
nel involved in the operation, transport, maintenance
and storage of the machine. Improper use or mainte-
nance of the machine can result in injury or death. To re-
duce the potential for injury or death, comply with the
following safety instructions.
WARNING
To reduce the potential for injury or death,
comply with the following safety instructions.
Before Operating
1. Read and understand the contents of the Operator’s 4. Since gasoline is highly flammable, handle it careful-
Manual before starting and operating the machine. Be- ly:
come familiar with the controls and know how to stop the
machine and engine quickly. A replacement Operator’s A. Store fuel in containers specifically designed for
Manual is available on the Internet at www.Toro.com or this purpose.
by sending the complete model and serial number to: B. Do not remove machine fuel tank cap while en-
The Toro Company gine is hot or running.
Attn. Technical Publications
8111 Lyndale Avenue South C. Do not smoke while handling fuel.
Bloomington, Minnesota 55420–1196 D. Fill fuel tank outdoors and only to within an inch of
2. Keep all shields, safety devices and decals in place. the top of the tank, not the filler neck. Do not overfill
the fuel tank.
If a shield, safety device or decal is defective, illegible
or damaged, repair or replace it before operating the E. Wipe up any spilled fuel.
machine. Also tighten any loose nuts, bolts or screws to
ensure machine is in safe operating condition.
3. Assure interlock switches are adjusted correctly so
engine cannot be started unless gear shift lever is in
NEUTRAL and traction drive is DISENGAGED.
While Operating
1. Operator should be standing at the side console
when starting the engine and at the handle when operat-
ing the machine. Stay away from the coring head when
it is engaged.
2. Before starting the engine
A. Make sure gear shift lever is in neutral.
B. Disengage the traction drive.
3. Do not run engine in a confined area without ade-
quate ventilation. Exhaust fumes are hazardous and
could possibly be deadly.
4. Do not touch engine, muffler or exhaust pipe while
engine is running or soon after it is stopped. These
areas could be hot enough to cause burns.
5. Before leaving the operator’s position:
A. Ensure that gear shift lever is in neutral.
B. Raise coring head and wait for coring head to
stop.
C. Set parking brake. Stop engine and remove key
from ignition switch.
6. Anytime the machine is parked (short or long term),
raise coring head lock–up brackets to secure the coring
head in the raised position. This eliminates the risk of the
coring head accidentally lowering to the ground.
7. Do not park on slopes unless wheels are chocked or
blocked.
Safety Page 1 – 2 Greens Aerator

Maintenance and Service
1. Before servicing or making adjustments, position
machine on level surface, raise coring head, stop en-
gine and remove key from the ignition switch. Raise
lock–up brackets on each side of machine and lower
coring head until it rests on brackets.
2. Make sure machine is in safe operating condition by
keeping all nuts, bolts and screws tight.
3. Never store the machine or fuel container inside
where there is an open flame, such as near a water heat-
er or furnace.
4. Make sure all hydraulic line connectors are tight and
all hydraulic hoses and lines are in good condition be-
fore applying pressure to the hydraulic system.
5. Keep body and hands away from pin hole leaks in hy-
draulic lines that eject high pressure hydraulic fluid. Use
cardboard or paper to find hydraulic leaks. Hydraulic
fluid escaping under pressure can penetrate skin and
cause injury. Hydraulic fluid accidentally injected into
the skin must be surgically removed within a few hours
by a doctor familiar with this form of injury or gangrene
may result.
6. Before disconnecting any hydraulic component or
performing any work on the hydraulic system, all pres-
sure in system must be relieved. To relieve hydraulic
system pressure, stop engine, raise coring head lock–
up brackets and lower coring head onto lock–up brack-
ets.
7. If major repairs are ever needed or assistance is de-
sired, contact an Authorized Toro Distributor.
8. Use care when checking or servicing the coring
head: wear gloves and use caution.
9. To reduce potential fire hazard, keep engine area
free of excessive grease, grass, leaves and dirt.
10.If engine must be running to perform maintenance or
make an adjustment, keep hands, feet, clothing and oth-
er parts of the body away from all moving machine parts.
Keep bystanders away.
11.Do not overspeed the engine by changing governor
setting. To assure safety and accuracy, check maximum
engine speed with a tachometer.
12.Shut engine off before checking or adding oil to the
engine crankcase.
13.Disconnect battery before servicing the machine.
Disconnect negative battery cable first and positive bat-
tery cable last. If battery voltage is required for trouble-
shooting or test procedures, temporarily connect the
battery. Reconnect positive battery cable first and nega-
tive battery cable last.
14.Battery acid is poisonous and can cause burns.
Avoid contact with skin, eyes and clothing. Protect your
face, eyes and clothing when working with a battery.
15.Battery gases can explode. Keep cigarettes, sparks
and flames away from the battery.
16.When changing tires or performing other service,
use correct blocks, hoists and jacks. Make sure ma-
chine is parked on a solid level floor such as a concrete
floor. Prior to raising the machine, remove any attach-
ments that may interfere with the safe and proper raising
of the machine. Always chock or block wheels. Use jack
stands or solid wood blocks to support the raised ma-
chine. If the machine is not properly supported by blocks
or jack stands, the machine may move or fall, which may
result in personal injury (see Jacking Instructions).
17.At the time of manufacture, the machine conformed
to all applicable safety standards. To assure optimum
performance and continued safety certification of the
machine, use genuine Toro replacement parts and ac-
cessories. Replacement parts and accessories made
by other manufacturers may result in non-conformance
with the safety standards, and the warranty may be
voided.
Safety
Greens Aerator Page 1 – 3 Safety

Jacking Instructions
CAUTION
er
jack stands, the machine may move or fall,
Jacking the Front End
ing.
Figure 1
1
2
1
When changing attachments, tires or perform-
ing other service, use correct blocks, hoists
and jacks. Make sure machine is parked on a
solid level surface such as a concrete floor.
Prior to raising machine, remove any attach-
ments that may interfere with the safe and prop-
raising of the machine. Always chock or
block wheels. Use jack stands or solid wood
blocks to support the raised machine. If the ma-
chine is not properly supported by blocks or
which may result in personal injury.
1. Chock rear tires to prevent the machine from mov-
2. Raise lock–up brackets on each side of machine and
lower coring head until it rests on brackets (Fig. 1).
3. Position jack securely under the front of the frame on
side of machine (Fig. 2).
1. Lock–upbracket (raised position)
Figure 2
4. Jack front of machine off the ground. 1. Front wheel 2. Frame jacking point
5. Position jack stands or hardwood blocks under the
front of the frame to support the machine.
6. Repeat jacking and support on other side of frame.
Jacking the Rear End
1. Chock front tire to prevent the machine from moving.
2. Raise lock–up brackets on each side of machine and
lower coring head until it rests on brackets (Fig. 1).
3. Place jack securely under the main frame just inside
of the rear wheel (Fig. 3).
4. Jack rear of machine off the ground.
2
1
Figure 3
2. Frame jacking point
5. Position jack stands or hardwood blocks under the 1. Rear wheel
frame to support the machine.
Safety Page 1 – 4 Greens Aerator

Safety and Instruction Decals
Numerous safety and instruction decals are affixed to
the Greens Aerator. If any decal becomes illegible or
damaged, install a new decal. Part numbers for replace-
ment decals are listed in your Parts Catalog. Order re-
placement decals from your Authorized Toro Distributor.
Safety
Greens Aerator Page 1 – 5 Safety

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Safety Page 1 – 6 Greens Aerator

Chapter 2
Product Records and Maintenance
Table of Contents
PRODUCT RECORDS . . . . . . . . . . . . . . . . . . . . . . . . . 1
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
EQUIVALENTS AND CONVERSIONS . . . . . . . . . . . 2
Decimal and Millimeter Equivalents . . . . . . . . . . . . 2
U.S. to Metric Conversions . . . . . . . . . . . . . . . . . . . 2
TORQUE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . 3
Fastener Identification . . . . . . . . . . . . . . . . . . . . . . . 3
Product Records
Insert Operator’s Manual and Parts Catalog for your
Greens Aerator at the end of this chapter. Additionally,
if any optional equipment or accessories have been
installed to your machine, insert the Installation Instruc-
tions, Operator’s Manuals and Parts Catalogs for those
options at the end of this chapter.
Maintenance
Maintenance procedures and recommended service in-
tervals for the Greens Aerator are covered in the Opera-
tor’s Manual. Refer to that publication when performing
regular equipment maintenance. Refer to the Engine
Operator’s Manual for additional engine specific main-
tenance procedures.
Standard Torque for Dry, Zinc Plated and
Steel Fasteners (Inch Series) . . . . . . . . . . . . . . . 4
Standard Torque for Dry, Zinc Plated and
Steel Fasteners (Metric Fasteners) . . . . . . . . . . 5
Other Torque Specifications . . . . . . . . . . . . . . . . . . 6
Conversion Factors . . . . . . . . . . . . . . . . . . . . . . . . . 6
Product Records
and Maintenance
Greens Aerator Page 2 – 1 Product Records and Maintenance

Equivalents and Conversions
Product Records and Maintenance Page 2 – 2 Greens Aerator

Torque Specifications
Recommended fastener torque values are listed in the
following tables. For critical applications, as determined
by Toro, either the recommended torque or a torque that
is unique to the application is clearly identified and spe-
cified in this Service Manual.
These Torque Specifications for the installation and
tightening of fasteners shall apply to all fasteners which
do not have a specific requirement identified in this Ser-
vice Manual. The following factors shall be considered
when applying torque: cleanliness of the fastener, use
of a thread sealant (e.g. Loctite), degree of lubrication
on the fastener, presence of a prevailing torque feature,
hardness of the surface underneath the fastener’s head
or similar condition which affects the installation.
As noted in the following tables, torque values should be
reduced by 25% for lubricated fasteners to achieve
the similar stress as a dry fastener. Torque values may
also have to be reduced when the fastener is threaded
into aluminum or brass. The specific torque value
should be determined based on the aluminum or brass
material strength, fastener size, length of thread en-
gagement, etc.
The standard method of verifying torque shall be per-
formed by marking a line on the fastener (head or nut)
and mating part, then back off fastener 1/4 of a turn.
Measure the torque required to tighten the fastener until
the lines match up.
Product Records
and Maintenance
Fastener Identification
Grade 1
Inch Series Bolts and Screws
Class 8.8 Class 10.9
Metric Bolts and Screws
Grade 5 Grade 8
Figure 1 Figure 2
Greens Aerator Page 2 – 3 Product Records and Maintenance

Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series)
Grade 1, 5 & SAE Grade 1 Bolts, Screws, Studs & SAE Grade 5 Bolts, Screws, Studs & SAE Grade 8 Bolts, Screws, Studs &
Thread Size 8 with Thin Sems with Regular Height Nuts Sems with Regular Height Nuts Sems with Regular Height Nuts
Height Nuts (SAE J995 Grade 2 or Stronger Nuts) (SAE J995 Grade 2 or Stronger Nuts) (SAE J995 Grade 5 or Stronger Nuts)
in–lb in–lb N–cm in–lb N–cm in–lb N–cm
# 6 – 32 UNC 15 + 2 169 + 23 23 + 3 262 + 34
# 6 – 40 UNF 10 + 2
10
+ 2 13 + 2
13
+ 2 147 + 23
147
+ 23 17 + 2 192 + 23 25 + 3 282 + 34
# 8 – 32 UNC 29 + 3 328 + 34 41 + 5 463 + 56
# 8 – 36 UNF 13 + 2
13
+ 2 25 + 5
25
+ 5 282 + 56
282
+ 56 31 + 4 350 + 45 43 + 5 486 + 56
# 10 – 24 UNC 42 + 5 475 + 56 60 + 6 678 + 68
# 10 – 32 UNF 18 + 2
18
+ 2 30 + 5
30
+ 5 339 + 56
339
+ 56 48 + 5 542 + 56 68 + 7 768 + 79
1/4 – 20 UNC 48 + 7 53 + 7 599 + 79 100 + 10 1130 + 113 140 + 15 1582 + 169
1/4 – 28 UNF 53 + 7 65 + 10 734 + 113 115 + 12 1299 + 136 160 + 17 1808 + 192
5/16 – 18 UNC 115 + 15 105 + 15 1186 + 169 200 + 25 2260 + 282 300 + 30 3390 + 339
5/16 – 24 UNF 138 + 17 128 + 17 1446 + 192 225 + 25 2542 + 282 325 + 33 3672 + 373
ft–lb ft–lb N–m ft–lb N–m ft–lb N–m
3/8 – 16 UNC 16 + 2 16 + 2 22 + 3 30 + 3 41 + 4 43 + 5 58 + 7
3/8 – 24 UNF 17 + 2 18 + 2 24 + 3 35 + 4 47 + 5 50 + 6 68 + 8
7/16 – 14 UNC 27 + 3 27 + 3 37 + 4 50 + 5 68 + 7 70 + 7 95 + 9
7/16 – 20 UNF 29 + 3 29 + 3 39 + 4 55 + 6 75 + 8 77 + 8 104 + 11
1/2 – 13 UNC 30 + 3 48 + 7 65 + 9 75 + 8 102 + 11 105 + 11 142 + 15
1/2 – 20 UNF 32 + 4 53 + 7 72 + 9 85 + 9 115 + 12 120 + 12 163 + 16
5/8 – 11 UNC 65 + 10 88 + 12 119 + 16 150 + 15 203 + 20 210 + 21 285 + 28
5/8 – 18 UNF 75 + 10 95 + 15 129 + 20 170 + 18 230 + 24 240 + 24 325 + 33
3/4 – 10 UNC 93 + 12 140 + 20 190 + 27 265 + 27 359 + 37 375 + 38 508 + 52
3/4 – 16 UNF 115 + 15 165 + 25 224 + 34 300 + 30 407 + 41 420 + 43 569 + 58
7/8 – 9 UNC 140 + 20 225 + 25 305 + 34 430 + 45 583 + 61 600 + 60 813 + 81
7/8 – 14 UNF 155 + 25 260 + 30 353 + 41 475 + 48 644 + 65 667 + 66 904 + 89
NOTE: Reduce torque values listed in the table above
by 25% for lubricated fasteners. Lubricated fasteners
are defined as threads coated with a lubricant such as
engine oil or thread sealant such as Loctite.
NOTE: Torque values may have to be reduced when
installing fasteners into threaded aluminum or brass.
The specific torque value should be determined based
on the fastener size, the aluminum or base material
strength, length of thread engagement, etc.
NOTE: The nominal torque values listed above for
Grade 5 and 8 fasteners are based on 75% of the mini-
mum proof load specified in SAE J429. The tolerance is
approximately + 10% of the nominal torque value. Thin
height nuts include jam nuts.
Product Records and Maintenance Page 2 – 4 Greens Aerator

Standard Torque for Dry, Zinc Plated and Steel Fasteners (Metric Fasteners)
Thread
Size
Thread Size Class 8.8 Bolts, Screws and Studs with
Regular
Height Nuts
Regular Height Nuts
(Class 8 or Stronger Nuts)
Class 10.9 Bolts, Screws and Studs with
Regular
Height Nuts
Regular Height Nuts
(Class 10 or Stronger Nuts)
M5 X 0.8 57 + 6 in–lb 644 + 68 N–cm 78 + 8 in–lb 881 + 90 N–cm
M6 X 1.0 96 + 10 in–lb 1085 + 113 N–cm 133 + 14 in–lb 1503 + 158 N–cm
M8 X 1.25 19 + 2 ft–lb 26 + 3 N–m 28 + 3 ft–lb 38 + 4 N–m
M10 X 1.5 38 + 4 ft–lb 52 + 5 N–m 54 + 6 ft–lb 73 + 8 N–m
M12 X 1.75 66 + 7 ft–lb 90 + 10 N–m 93 + 10 ft–lb 126 + 14 N–m
M16 X 2.0 166 + 17 ft–lb 225 + 23 N–m 229 + 23 ft–lb 310 + 31 N–m
M20 X 2.5 325 + 33 ft–lb 440 + 45 N–m 450 + 46 ft–lb 610 + 62 N–m
Product Records
and Maintenance
NOTE: Reduce torque values listed in the table above NOTE: The nominal torque values listed above are
by 25% for lubricated fasteners. Lubricated fasteners based on 75% of the minimum proof load specified in
are defined as threads coated with a lubricant such as SAE J1199. The tolerance is approximately + 10% of the
engine oil or thread sealant such as Loctite. nominal torque value.
NOTE: Torque values may have to be reduced when
installing fasteners into threaded aluminum or brass.
The specific torque value should be determined based
on the fastener size, the aluminum or base material
strength, length of thread engagement, etc.
Greens Aerator Page 2 – 5 Product Records and Maintenance

Other Torque Specifications
SAE Grade 8 Steel Set Screws Wheel Bolts and Lug Nuts
Thread
SizeThread Size Recommended Torque
Square Head Hex Socket
1/4 – 20 UNC 140 + 20 in–lb 73 + 12 in–lb
5/16 – 18 UNC 215 + 35 in–lb 145 + 20 in–lb
3/8 – 16 UNC 35 + 10 ft–lb 18 + 3 ft–lb
1/2 – 13 UNC 75 + 15 ft–lb 50 + 10 ft–lb
Thread Size Recommended Torque**
7/16 – 20 UNF
Grade 5 65 + 10 ft–lb 88 + 14 N–m
1/2 – 20 UNF
Grade 5 80 + 10 ft–lb 108 + 14 N–m
M12 X 1.25
Class 8.8 80 + 10 ft–lb 108 + 14 N–m
M12 X 1.5
Class 8.8 80 + 10 ft–lb 108 + 14 N–m
** For steel wheels and non–lubricated fasteners.
Thread Cutting Screws Thread Cutting Screws
(Zinc Plated Steel) (Zinc Plated Steel)
Type 1, Type 23 or Type F
Thread Size Baseline Torque*
No. 6 – 32 UNC 20 + 5 in–lb
No. 8 – 32 UNC 30 + 5 in–lb
No. 10 – 24 UNC 38 + 7 in–lb
1/4 – 20 UNC 85 + 15 in–lb
5/16 – 18 UNC 110 + 20 in–lb
3/8 – 16 UNC 200 + 100 in–lb
Thread
Size
Size Threads per Inch
Baseline
Torque*Baseline Torque*
Type A Type B
No. 6 18 20 20 + 5 in–lb
No. 8 15 18 30 + 5 in–lb
No. 10 12 16 38 + 7 in–lb
No. 12 11 14 85 + 15 in–lb
* Hole size, material strength, material thickness & finish
must be considered when determining specific torque
values. All torque values are based on non–lubricated
fasteners.
Conversion Factors
in–lb X 11.2985 = N–cm N–cm X 0.08851 = in–lb
ft–lb X 1.3558 = N–m N–m X 0.7376 = ft–lb
Product Records and Maintenance Page 2 – 6 Greens Aerator

Chapter 3
Engine
Table of Contents
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SPECIFICATIONS 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Models 09120 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Model 09100 and 09110 . . . . . . . . . . . . . . . . . . . . . . 3
SERVICE AND REPAIRS . . . . . . . . . . . . . . . . . . . . . . 5
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Engine 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BRIGGS & STRATTON REPAIR MANUAL FOR
4–CYCLE, V–TWIN CYLINDER, OHV HEAD ENGI-
NES
KOHLER MAGNUM SERVICE MANUAL
Introduction
This Chapter gives information about specifications and
repair of the Briggs & Stratton engine used in the
Greens Aerator (Model 09120).
NOTE: Greens Aerators Models 09100 and 09110 are
powered by a Kohler M16 engine. Service for these ma-
chines is similar to the procedures identified in this
Chapter.
General engine maintenance procedures are described
in your Operator’s Manual. Information on engine trou-
bleshooting, testing, disassembly and reassembly is
identified in the engine Repair Manual that is included at
the end of this chapter.
Most repairs and adjustments require tools which are
commonly available in many service shops. Special
tools are described in the engine Repair Manual. The
use of some specialized test equipment is explained.
However, the cost of the test equipment and the special-
ized nature of some repairs may dictate that the work be
done at an engine repair facility.
Service and repair parts for the engine used in the
Greens Aerator are supplied through your local engine
dealer or distributor (Briggs & Stratton or Kohler).
Engine
Greens Aerator Page 3 – 1 Engine

Engine Specifications
Model 09120
Item Description
Make / Designation Briggs and Stratton, 4–cycle, V–Twin Cylinder,
OHV, Air Cooled Gasoline Engine – Model 303447
Number of Cylinders 2
Bore x Stroke 2.68” x 2.60” (68 mm x 66 mm)
Total Displacement 29.3 Cubic Inches (480 cc)
Dry Weight (approximate) 72 Pounds (32.4 Kilograms)
Fuel Unleaded, Regular Gasoline (Minimum 85 Octane)
Fuel Pump Pulsating Crankcase Vacuum
Fuel Tank Capacity 4.5 U.S. Gallons (17 Liters)
Governor Mechanical
Idle Speed (no load) 1400 + 100 RPM
High Idle (no load)
NOTE: High Idle when shift lever is in reverse position 3600 + 100 RPM 1400 to 1800 RPM
Engine Oil See Operator’s Manual
Oil Pump Gear Driven Geroter Type
Crankcase Oil Capacity 1.75 Quarts (1.66 Liters) with New Filter
Starter 12 VDC
Engine Page 3 – 2 Greens Aerator

Models 09100 and 09110
Item Description
Make / Designation Kohler, 4–Cycle,
Air Cooled Gasoline Engine – Model M16S
Number of Cylinders 1
Bore x Stroke 3.75” x 3.25” (95.3 mm x 82.6 mm)
Total Displacement 35.9 Cubic Inches (588 cc)
Dry Weight (approximate) 129 Pounds (58.6 Kilograms)
Fuel Unleaded, Regular Gasoline
Fuel Pump Mechanical
Fuel Tank Capacity 1.5 U.S. Gallons (5.7 Liters)
Governor Mechanical
Idle Speed (no load) 1300 RPM
High Idle (no load) 3600 RPM
Engine Oil See Operator’s Manual
Crankcase Oil Capacity 5.25 Pints (2.5 Liters)
Starter 12 VDC
Engine
Greens Aerator Page 3 – 3 Engine

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Engine Page 3 – 4 Greens Aerator