Toro Lawn-Boy TimeCutter Z Series User manual

TimeCutter®Z /Precision®Z
Zero Radius Turn Riding Mower
Service Manual
Consumer Products

This service manual was written expressly for Toro and Lawn-Boy service technicians. The Toro
Company has made every effort to make the information in this manual complete and correct.
Basic shop safety knowledge and mechanical/electrical skills are assumed. The Table of
Contents lists the systems and the related topics covered in this manual.
For additional information on the electrical system, please refer to the Toro Electrical
Demystification Guide (492-4761) and subsequent. For service information on drive systems,
please refer to the Hydro-Gear EZT service manual (492-4778). For information specific to the
engines used on this unit, refer to the appropriate engine manufacturer’s service and repair
instructions.
Toro TimeCutter®Z model year 2003 - 2006 and Lawn-Boy Precision®Z model year 2005 - 2006
are covered in this manual. The manual may also be specified for use on later model products.
The hydrostatic transaxle is a sophisticated piece of machinery. Maintain strict cleanliness
control during all stages of service and repair. Cover or cap all hose ends and fittings whenever
they are exposed. Even a small amount of dirt or other contamination can severely damage the
system.
We are hopeful that you will find this manual a valuable addition to your service shop. If you
have any questions or comments regarding this manual, please contact us at the following
address:
The Toro Company
Consumer Service Training Department
8111 Lyndale Avenue South
Bloomington, MN 55420
The Toro Company reserves the right to change product specifications or this manual without
notice.
ABOUT THIS MANUAL
Copyright© All Rights Reserved
©2007 The Toro Company

iTimeCutter Z / Precision Z Service Manual
TABLE OF CONTENTS
SAFETY INFORMATION
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Think Safety First . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS
General Specifications Toro TimeCutter®Z . . . . . . . . . . . . . . . . . . . . . . . . .
General Specifications Lawn-Boy Precision®Z . . . . . . . . . . . . . . . . . . . . . . .
Hydrostatic Transaxles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transaxle Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydrostatic Transaxles cont. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch Series) . . . . . . . . . . . . .
Standard Torque for Dry, Zinc, and Steel Fasteners (Metric Fasteners) . . . . . . . . . . . . . .
Other Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equivalents and Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
U.S. to Metric Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHASSIS
Model and Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Model and Serial Number Identification . . . . . . . . . . . . . . . . . . . . . . .
Greasing and Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Castor Fork Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . .
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Castor Support Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Left Side Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Right Side Panel and Gas Tank Removal . . . . . . . . . . . . . . . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lift Arm Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Belt Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HYDRO-GEAR TRANSAXLE
Hydro-Gear (310-2200) EZT™ Transaxles . . . . . . . . . . . . . . . . . . . . . . . . .
Internal Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transaxle Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Transaxles from the Hydro Mount Frame . . . . . . . . . . . . . . . . . . . . .
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Hub Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Wheel Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transaxle Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purging Procedures - Hydro-Gear Transaxles . . . . . . . . . . . . . . . . . . . . . . . .
Neutral Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tracking Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Arm Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A1-2
A1-2
A2-2
A2-4
A2-6
A2-5
A2-7
A2-8
A2-9
A2-10
A2-11
A2-12
A2-13
3-2
3-2
3-2
3-3
3-3
3-3
3-3
3-4
3-4
3-4
3-4
3-5
3-6
3-6
3-6
3-6
3-7
3-7
3-8
4-2
4-2
4-2
4-2
4-4
4-5
4-5
4-5
4-6
4-8
4-9
4-11
4-11
4-12

ii TimeCutter Z / Precision Z Service Manual
TABLE OF CONTENTS
HYDRO-GEAR TRANSAXLE cont.
Actuator Arm Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
310-2200 EZT™ Troubleshooting Checklist . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL SYSTEM
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Relay (Kill Relay) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PTO Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric PTO Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coil Resistance Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Clutch Current Draw . . . . . . . . . . . . . . . . . . . . . . . . . . .
Park Brake Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MOWER DECKS - 38”/42”, 44” AND 48” DECK ASSEMBLIES
38”/42” Mower Decks
Leveling the Mower from Side-to-Side . . . . . . . . . . . . . . . . . . . . . . . . .
Adjusting the Front-to-Rear Blade Slope . . . . . . . . . . . . . . . . . . . . . . . .
Inspecting the Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the Mower Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Mower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Mower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-14
4-16
5-2
5-2
5-2
5-2
5-2
5-2
5-3
5-3
5-3
5-3
5-3
5-4
5-4
5-4
5-4
5-4
5-5
5-5
5-5
5-5
5-5
5-7
5-7
5-7
5-7
5-7
5-7
5-7
5-8
5-8
5-8
5-8
5-9
5-9
5-9
5-9
5-9
5-9
6-2
6-3
6-4
6-4
6-6
6-7

iiiTimeCutter Z / Precision Z Service Manual
TABLE OF CONTENTS
MOWER DECKS - 38”/42”, 44” AND 48” DECK ASSEMBLIES cont.
44” Mower Decks
Leveling the Mower from Side-to-Side . . . . . . . . . . . . . . . . . . . . . . . . .
Adjusting the Front-to-Rear Blade Slope . . . . . . . . . . . . . . . . . . . . . . . .
Inspecting the Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the Mower Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Mower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Mower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48” Mower Decks
Leveling the Mower from Side-to-Side . . . . . . . . . . . . . . . . . . . . . . . . .
Adjusting the Front-to-Rear Blade Slope . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Mower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mower Belt Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Mower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-8
6-8
6-10
6-10
6-11
6-12
A6-13
A6-14
A6-16
A6-17
A6-18

iv TimeCutter Z / Precision Z Service Manual
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TABLE OF CONTENTS

A1-1TimeCutter Z / Precision Z Service Manual
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3
4
5
6
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydro-Gear Transaxle . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Systems . . . . . . . . . . . . . . . . . . . . . . . . . .
Mower Decks . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
2
3
4
5
6
TIMECUTTER®Z / PRECISION®Z SERVICE MANUAL
SAFETY INFORMATION

A1-2 TimeCutter Z / Precision Z Service Manual
1
General Information
This symbol means WARNING or
PERSONAL SAFETY INSTRUCTION
- read the instruction because it has to
do with your safety. Failure to comply
with the instruction may result in
personal injury or even death.
This manual is intended as a service and repair
manual only. The safety instructions provided herein
are for troubleshooting, service, and repair of the
TimeCutterZ zero radius tractor and the Precision
Z®. The TimeCutter® Z zero radius tractor and the
Precision Z® attachment operator’s manuals contain
safety information and operating tips for safe operating
practices. Operator’s manuals are available through
your Toro parts source or:
The Toro Company
Publications Department
8111 Lyndale Avenue South
Bloomington, MN 55420
Think Safety First
Avoid unexpected starting of engine...
Always turn off the engine and disconnect the spark
plug wire(s) before cleaning, adjusting, or repair.
Avoid lacerations and amputations...
Stay clear of all moving parts whenever the engine is
running. Treat all normally moving parts as if they were
moving whenever the engine is running or has the
potential to start.
Avoid burns...
Do not touch the engine, muffler, or other components
which may increase in temperature during operation,
while the unit is running or shortly after it has been
running.
Avoid fires and explosions...
Avoid spilling fuel and never smoke while working with
any type of fuel or lubricant. Wipe up any spilled fuel or
oil immediately. Never remove the fuel cap or add fuel
when the engine is running. Always use approved,
labeled containers for storing or transporting fuel and
lubricants.
Avoid asphyxiation...
Never operate an engine in a confined area without
proper ventilation.
Avoid injury from batteries...
Battery acid is poisonous and can cause burns. Avoid
contact with skin, eyes, and clothing. Battery gases
can explode. Keep cigarettes, sparks, and flames away
from the battery.
Avoid injury due to inferior parts...
Use only original equipment parts to ensure that
important safety criteria are met.
Avoid injury to bystanders...
Always clear the area of bystanders before starting or
testing powered equipment.
Avoid injury due to projectiles...
Always clear the area of sticks, rocks, or any other
debris that could be picked up and thrown by the
powered equipment.
Avoid modifications...
Never alter or modify any part unless it is a factory
approved procedure.
Avoid unsafe operation...
Always test the safety interlock system after making
adjustments or repairs on the machine. Refer to the
Electrical section in this manual for more information.
SAFETY INFORMATION

A2-1TimeCutter Z / Precision Z Service Manual
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2
3
4
5
6
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TIMECUTTER®Z / PRECISION®Z SERVICE MANUAL
SPECIFICATIONS
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydro-Gear Transaxle . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Systems . . . . . . . . . . . . . . . . . . . . . . . . . .
Mower Decks . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
2

A2-2 TimeCutter Z / Precision Z Service Manual
SPECIFICATIONS
Item Specification
Engines All units were manufactured with Briggs & Stratton engines ranging from 14 to 17
horsepower. For information on servicing the engine, contact Briggs & Stratton
Corporation.
RPM setting,
all models
High RPM Setting (no load) 3300 + 100 RPM
Construction Frame: 10 gauge steel
Fuel Capacity 2 gallons (7.5 liters) Diesel Fuel
Wheel Base 47.6” (120.9cm) center of front to center of drive tires
Overall Length 72.6” (184.4cm)
Overall Width Model Width
14-38Z & Z380 45.4” (115.3cm) with deck deflector down, 42.4” (107.7cm) Gate
width with deflector up.
16-42Z, 17-42Z &
Z420
50.7” (128cm) with deck deflector down, 45.0” (116.8cm) Gate
width with deflector up.
18-44Z 60” (152.4cm) with deck deflector down, 46.6” (118.4cm) Gate
width with deck deflector up.
Z480 62.5” (158.8cm) with deck deflector down, 53.5” (135.9cm) Gate
width with deck deflector up.
Weight Model Net Weight Model Net Weight
14-38Z & Z380 505 lbs. (229kg) est. 18-44Z 535 lbs. (243kg) est.
16-42Z & Z420 516 lbs. (234kg) est. Z480 550 lbs. (249kg) est.
17-42Z 516 lbs. (234kg) est.
Traction System Transaxles: Twin Hydro-Gear EZT
Transaxle Drive: Belt Drive with self-tensioning system.
Ground Speed Forward: Infinite 0 – 6.0 mph (9.6km/hr)
Reverse: Infinite 0 – 3 mph (5km/hr)
Tires Front Tires all models - 410/350 x 4-4.25
Rear Tires 18 x 6.5 - 8, 14-38Z/Z380
Rear Tires 18 x 7.5 - 8, 16-42Z/Z420
Rear Tires 18 x 8.5 - 8, 17-42Z/18-44Z/Z480
Tire Pressure Front Tires 35 psi (241kPa)
Rear Tires 13 psi (90kPa)
Attachment Drive Electric Clutch, Maintenance Free, No Adjustments
2
General Specifications - Toro TimeCutter®Z

A2-3TimeCutter Z / Precision Z Service Manual
SPECIFICATIONS
2
Item Specification
Mower Decks 38” (97cm) cut, right side discharge, two blade mid-mount rotary. Drawn 13 gauge steel
deck with welded mounting brackets. Frame supported
42” (107cm) right side discharge, two blade mid-mount rotary. Drawn 13 gauge steel
deck with welded mounting brackets. Frame supported.
44” (112cm) cut, right side discharge, three blade mid-mount rotary. Drawn 13 gauge
steel deck with welded mounting brackets. Frame supported.
48” (121.8cm) cut, right side discharge, three blade mid-mount rotary. Drawn 13 gauge
steel deck with welded mounting brackets. Frame supported.
Blade Tip Speed Model Speed
14-38Z & Z380 16,760 ft/min @ 3300 RPM nominal, 17,270 ft/min @ 3400 RPM
max.
16-42Z & 17-42Z &
Z420
17,290 ft/min @ 3300 RPM nominal, 17,810 ft/min @ 3400 RPM
max.
18-44Z 17,310 ft/min @ 2700 RPM
Z480 15,230 ft/min @3300 RPM nominal, 15,710 ft/min @ 3400 RPM
max.
14-38Z (Int’l model) 13,710 ft/min @ 2700 RPM
16-42Z (Int’l model) 14,140 ft/min @ 2700 RPM
Height-of-Cut All models except Z480 - Seven height-of-cut positions from 1.5” (38mm) to 4.5
(114mm), 1/2” (12.7mm) increments.
Z480 - Seven height-of-cut positions from 1.0” (25.4mm) to 4.0 (101.6mm), 1/2”
(12.7mm) increments.
Electrical System Battery Voltage: 12 volt negative ground
Battery Type: BCI Group U1

A2-4 TimeCutter Z / Precision Z Service Manual
SPECIFICATIONS
General Specifications - Lawn-Boy Precision Z
2
Item Specification
Engines Units were manufactured with Briggs & Stratton and Honda engines ranging from
390cc to 530cc displacement. For information on servicing the engines, contact Briggs
& Stratton Corporation or Honda.
RPM setting,
all models
High RPM Setting (no load) 3300 ± 100 RPM
Construction Frame: 10 gauge steel
Fuel Capacity 1.8 gallons (6.8 liters)
Wheel Base 47.6” (120.9cm) center of front tire to center of drive tires
Overall Length 72.6” (184.4cm)
Overall Width Model Width
Z320H & Z310 45.4” (115.3cm) with deck deflector down, 42.4” (107.7cm) Gate
width with deck deflector up.
Z330LX &
Z340HLX
50.7” (128.8cm) with deck deflector down, 46.0” (116.8cm) Gate
width with deck deflector up.
Z350HLX 60” (152.4cm) with deck deflector down, 46.6” (118.4cm) Gate
width with deck deflector up.
Weight Model Net Weight Model Net Weight
Z320H 502 lbs. (228 kg) est. Z340HLX 523 lbs. (237 kg) est.
Z310 502 lbs. (228 kg) est. Z350HLX 560 lbs. (254 kg) est.
Z330LX 514 lbs. (233 kg) est.
Traction System Transaxles: Twin Hydro-Gear EZT Transaxle drive. Belt Drive with self-tensioning
system.
Ground Speed Forward: 0 – 6.0 mph (9.7km/hr)
Reverse: 0 – 3.0 mph (5.0km/hr)
Tires Front Tires all Models – 410/350 x 4 with “sawtooth” tread
Rear Tires 18x6.5-8 – Z320H – Z310
Rear Tires 18x8.5-8 – Z330LX
Rear Tires 18x7.5-8 – Z340HLX
Rear Tires 18x8.5-8 – Z350HLX
Tire Pressure Front Tires 35 psi (241kPa)
Rear Tires 13 psi (90kPa)
Attachment Drive Electric Clutch, Maintenance Free, No Adjustments

A2-5TimeCutter Z / Precision Z Service Manual
SPECIFICATIONS
2
Item Specification
Mower Decks 38” (97cm) cut, right side discharge, two blade mid-mount rotary. Drawn 13 gauge steel
deck with welded mounting brackets. Frame supported.
42” (107cm) cut, right side discharge, two blade mid-mount rotary. Drawn 13 gauge
steel deck with welded mounting brackets. Frame supported.
44” (112cm) cut, right side discharge, two blade mid-mount rotary. Drawn 13 gauge
steel deck with welded mounting brackets. Frame supported.
Blade Tip Speed Model Speed
Z320H/Z310 16,760 ft/min @3300 RPM nominal, 17,270 ft/min @ 3400 RPM
max.
Z330LX/Z340HLX 17,290 ft/min @ 3300 RPM nominal, 17,810 ft/min @ 3400 RPM
max.
Z350HLX 16,740 ft/min @ 3300 RPM nominal, 17,310 ft/min @ 3400 RPM
max.
Height-of-Cut Seven height-of-cut positions from 1.5” (38mm) to 4.5” (114mm), 1/2” (12.7mm)
increments.
Electrical System Battery Voltage: 12 volt negative ground
Battery Type: BCI Group U1

A2-6 TimeCutter Z / Precision Z Service Manual
Transaxle Specifications
Lubrication SAE 20W-50 API Classification SH/CD
Oil Capacity 1.6 to 1.7 qt. (1.5 to 1.6 liters)
Oil Level The transaxle is a sealed system and does not require periodic checking. Check oil at the oil
fill plug location only. Do not check the oil at the vent tube. Checking oil at the vent tube will
only give you a false reading or no reading at all, since this is the oil expansion area. If the oil
needs to be checked, the transaxle must be removed to check oil level and IT CAN BE ONLY
CHECKED COLD. There is a fill plug located at the top of the transaxle. To check the level of
the oil, remove the fill plug. Oil level should be 3/4” (1.9cm) from the top of the oil fill plug.
Fluid Change The transaxle is factory filled and does not require regular oil changes.
SPECIFICATIONS
MVC-204X
Hydrostatic Transaxles
Identification:
Hydro-Gear EZT Hydrostatic Transaxles
2

A2-7TimeCutter Z / Precision Z Service Manual
SPECIFICATIONS
Hydrostatic Transaxles cont.
MVC-206XMVC-205X
Note: If you are replacing the transaxle, after you
have installed the hydro rods, remove the nut
and washer located on the cam plate. Also,
check the oil prior to installation.
2

A2-8 TimeCutter Z / Precision Z Service Manual
SPECIFICATIONS
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 specified in the 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 the
service manual. The following factors shall be
considered when applying torque: cleanliness of the
fastener, use of a thread sealant (Loctite), degree of
lubrication on the fastener, presence of a prevailing
torque feature, hardness of the surface underneath of
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 engagement, etc.
The standard method of verifying torque shall be
performed 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.
Fastener Identification
Figure A
Figure B
Inch Series Bolts and Screws
(A) Grade 1
(B) Grade 5
(C) Grade 8
Metric Bolts and Screws
(A) Class 8.8 (B) Class 10.9
2
1
2

A2-9TimeCutter Z / Precision Z Service Manual
SPECIFICATIONS
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch Series)
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
oil, graphite, 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
minimum proof load specified in SAE J429. The
tolerance is approximately ± 10% of the nominal torque
value. Thin height nuts include jam nuts.
Thread Size
Grade 1, 5, &
8 with Thin
Height Nuts
SAE Grade 1 Bolts, Screws,
Studs, & Sems with Regular
Height Nuts (SAE J995
Grade 2 or Stronger Nuts)
SAE Grade 5 Bolts, Screws,
Studs, & Sems with Regular
Height Nuts (SAE J995
Grade 2 or Stronger Nuts)
SAE Grade 8 Bolts, Screws,
Studs, & Sems with Regular
Height Nuts (SAE J995
Grade 2 or Stronger Nuts)
In-lb In-lb N-cm In-lb N-cm In-lb N-cm
# 6 - 32 UNC 10 ± 2 13 ± 2 147 ± 23 15 ± 2 170 ± 20 23 ± 2 260 ± 20
# 6 - 40 UNF 17 ± 2 190 ± 20 25 ± 2 280 ± 20
# 8 - 32 UNC 13 ± 2 25 ± 5 282 ± 30 29 ± 3 330 ± 30 41 ± 4 460 ± 45
# 8 - 36 UNF 31 ± 3 350 ± 30 43 ± 4 31 ± 3
# 10 - 24 UNC 18 ± 2 30 ± 5 339 ± 56 42 ± 4 475 ± 45 60 ± 6 674 ± 70
#10 - 32 UNF 48 ± 4 540 ± 45 68 ± 6 765 ± 70
1/4 - 20 UNC 48 ± 7 53 ± 7 599 ± 79 100 ± 10 1125 ± 100 140 ± 15 1580 ± 170
1/4 - 28 UNF 53 ± 7 65 ± 10 734 ± 113 115 ± 10 1300 ± 100 160 ± 15 1800 ± 170
5/16 - 18 UNC 115 ± 15 105 ± 17 1186 ± 169 200 ± 25 2250 ± 280 300 ± 30 3390 ± 340
5/16 - 24 UNF 138 ± 17 128 ± 17 1446 ± 192 225 ± 25 2540 ± 280 325 ± 30 3670 ± 340
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 ± 4 58 ± 5
3/8 - 24 UNF 17 ± 2 18 ± 2 24 ± 3 35 ± 3 47 ± 4 50 ± 4 68 ± 5
7/16 - 14 UNC 27 ± 3 27 ± 3 37 ± 4 50 ± 5 68 ± 7 70 ± 7 68 ± 9
7/16 - 20 UNF 29 ± 3 29 ± 3 39 ± 4 55 ± 5 75 ± 7 77 ± 7 104 ± 9
1/2 - 13 UNC 30 ± 3 48 ± 7 65 ± 9 75 ± 8 102 ± 11 105 ± 10 142 ± 14
1/2 - 20 UNF 32 ± 3 53 ± 7 72 ± 9 85 ± 8 115 ± 11 120 ± 10 163 ± 14
5/8 - 11 UNC 65 ± 10 88 ± 12 119 ± 16 150 ± 15 203 ± 20 210 ± 20 285 ± 27
5/8 - 18 UNF 75 ± 10 95 ± 15 129 ± 20 170 ± 15 230 ± 20 240 ± 20 325 ± 27
3/4 - 10 UNC 93 ± 12 140 ± 20 190 ± 27 265 ± 25 359 ± 34 374 ± 35 508 ± 47
3/4 - 16 UNF 115 ± 15 165 ± 25 224 ± 34 300 ± 25 407 ± 34 420 ± 35 569 ± 47
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 ± 45 644 ± 61 660 ± 60 895 ± 81
2
2

A2-10 TimeCutter Z / Precision Z Service Manual
SPECIFICATIONS
Standard Torque for Dry, Zinc, and Steel Fasteners (Metric Fasteners)
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
oil, graphite, 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 are
based on 75% of the minimum proof load specified in
SAE J1199. The tolerance is approximately ± 10% of
the nominal torque value. Thin height nuts include jam nuts.
Thread Size
Class 8.8 Bolts, Screws, and Studs with
Regular Height Nuts
(Class 8 or Strong Nuts)
Class 10.9 Bolts, Screws, and Studs with
Regular Height Nuts (
Class 10 or Strong Nuts)
M5 X 0.8 57 ± 5 in-lb 640 ± 60 N-cm 78 ± 7 in-lb 885 ± 80 N-cm
M6 X 1.0 96 ± 9 in-lb 1018 ± 100 N-cm 133 ± 13 in-lb 1500 ± 150 N-cm
M8 X 1.25 19 ± 2 ft-lb 26 ± 3 N-m 27 ± 2 ft-lb 36 ± 3 N-m
M10 X 1.5 38 ± 4 ft-lb 52 ± 5 N-m 53 ± 5 ft-lb 72 ± 7 N-m
M12 X 1.75 66 ± 7 ft-lb 90 ± 10 N-m 92 ± 9 ft-lb 125 ± 12 N-m
M16 X 2.0 166 ± 15 ft-lb 225 ± 20 N-m 229 ± 22 ft-lb 310 ± 30 N-m
M20 X 2.5 325 ± 33 ft-lb 440 ± 45 N-m 450 ± 37 ft-lb 610 ± 50 N-m
2

CHASSIS
TimeCutterZ Service Manual 3 - 1
TIMECUTTERZ SERVICE MANUAL
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydro-Gear Transaxle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mower Decks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
2
3
4
5
6

CHASSIS
3 - 2 TimeCutterZ Service Manual
Model and Serial Number Location
The unit model and serial number plate is located on
the frame under the seat as shown in the illustration
(Figure 3).
Figure 3 mvc-049
Engine Model and Serial Number
Identification
Consult the appropriate engine manufacturer’s service
literature for the location and translation of the engine
model and serial number information (Figure 4).
Transaxle Model and Serial Number
Figure 4
Greasing and Lubrication
The unit should be greased every 25 hours or more
often when operated in dusty, dirty or sandy conditions.
Grease Type: No. 2 general purpose lithium base
grease.
There are four grease fittings located in the front wheel
area:
1. One grease fitting is located in each of the cast
iron pivot castor supports (Figure 5).
Figure 5 mvc-050
2. One grease fitting is located on each front wheel
hub on the front tire (Figure 6).
Figure 6 mvc-051
3