Consumer Products
LX Lawn
Tractor
Service Manual
TABLE OF CONTENTS
SAFETY INFORMATION |
|
|
|
|
General Information . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . . . . . . 1-1 |
|||
Think Safety First . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 |
||||
SPECIFICATIONS |
|
|
|
|
Torque Specifications . . . . . . . . . . . . . . . . . . . . . . |
. . . |
. . . |
. . . . . 2-1 |
|
Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series) . . . |
. . . |
. . . |
. . . . . 2-2 |
|
Standard Torque for Dry, Zinc and Steel Fasteners (Metric Fasteners) . . . |
. . . . . . . . . . . 2-3 |
|||
Other Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 |
||||
Equivalents and Conversions . . . . . . . . . . . . . . . . . . . |
. . . |
. . . |
. . . |
. . 2-5 |
Product Specifications . . . . . . . . . . . . . . . . . . . . . . |
. . . |
. . . |
. . . |
. . 2-6 |
CHASSIS
Front Pivot Axle Replacement
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-7 |
Axle Assembly Replacement |
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 |
||||||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-17 |
Steering Wheel Replacement |
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19 |
||||||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-20 |
Steering Shaft Replacement |
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21 |
||||||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-24 |
Electric PTO Clutch Replacement |
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27 |
||||||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-28 |
Fuel Tank Replacement |
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29 |
||||||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-30 |
Hood Replacement |
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31 |
||||||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-32 |
Fender Replacement |
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33 |
||||||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-39 |
Tower Replacement |
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45 |
||||||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-53 |
Lower Transmission Drive Belt Replacement - Gear Drive Models |
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-62 |
||||||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-64 |
Upper Transmission Drive Belt Replacement - Gear Drive Models |
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . |
. |
. . . . . . |
. . . . . . |
. . |
. . . . |
. |
. |
. 3-67 |
Installation . . . . . . . . . . . . . . |
. |
. . . . . . |
. . . . . . |
. . |
. . . . |
. |
. |
. 3-69 |
Transmission Drive Belt (Hydro) Replacement
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-71
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. . 3-74 |
|
Variable Speed Pulley Replacement |
|
|
|
|
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. 3-77 |
||||||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. |
. |
. |
. |
. |
. 3-79 |
LX Lawn Tractor Service Manual |
i |
TABLE OF CONTENTS
CHASSIS cont. |
|
|
|
|
Variable Speed Pulley Service |
|
|
|
|
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . |
. . 3-81 |
||
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . |
. |
. |
3-82 |
Purging the System - Hydrostatic Models . . . . . . . . . . . . . . . . . . |
. . . . . . |
. |
. |
3-82 |
Fluid Change - Hydrostatic Models . . . . . . . . . . . . . . . . . . . . |
. . . . . . |
. |
. |
3-83 |
Neutral Adjustment - Hydrostatic Models . . . . . . . . . . . . . . . . . . |
. . . . . . |
. |
. |
3-84 |
Front Wheel Toe-in Measurement . . . . . . . . . . . . . . . . . . . . . |
. . . . . . |
. |
. |
3-85 |
Front Wheel Toe-in Adjustment . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . |
. |
. |
3-86 |
Autodrive Pedal Adjustment - Hydrostatic Models . . . . . . . . . . . . . . . |
. . . . . . . . 3-87 |
|||
Brake Adjustment - Hydrostatic Models . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-91 |
||||
Throttle/Choke Cable Replacement |
|
|
|
|
Removal . . . . . . . . . . . . . . |
. . . . . . |
. . . . . . |
. . . . . . . . |
. |
. |
. 3-93 |
Installation . . . . . . . . . . . . . |
. . . . . . |
. . . . . . |
. . . . . . . . |
. |
. |
. 3-96 |
ENGINE
Engine Replacement
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
GEAR DRIVE SYSTEM
CVT Transmission Replacement
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . |
. 5-4 |
|
Brake Puck Replacement |
|
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 5-9 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. . 5-11 |
|
Brake Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . |
. 5-14 |
HYDROSTATIC DRIVE SYSTEM Hydro Transmission Replacement
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
MOWER DECK
42” Mower Deck - Brake Idler Assembly Replacement
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. . 7-3 |
42” Mower Deck - Idler Assembly Replacement |
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. . 7-8 |
42” Mower Belt Replacement |
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. . 7-13 |
46” Mower Deck - RH Idler Bracket Assembly |
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. . 7-16 |
46” Mower Deck - Brake Assembly |
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. . 7-20 |
46” Mower Deck - LH Idler Assembly |
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. |
. . 7-23 |
ii |
LX Lawn Tractor Service Manual |
TABLE OF CONTENTS
MOWER DECK cont.
46” Mower Deck - Lower Idler Bracket
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-26 |
46” Mower Deck - Lower Mower Deck Belt Replacement |
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-30 |
46” Mower Deck - Upper Mower Deck Belt Replacement |
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-35 |
50” Mower Deck - Belt Replacement |
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-38 |
50” Mower Deck - Idler Replacement |
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-41 |
42” Mower Deck - Spindle Replacement |
|
|
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43 |
||
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-45 |
42” Mower Deck - Spindle Service . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-47 |
46” Mower Deck - Double Pulley Spindle Service . . . . . . . . . . . . . . . |
. . . . . |
. . 7-51 |
46” Mower Deck - Single Pulley Spindle Service . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-56 |
50” Mower Deck - Spindle Service . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-60 |
42” Mower Deck Removal . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-64 |
42” Mower Deck Installation . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-67 |
46” Mower Deck Removal . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-69 |
46” Mower Deck Installation . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 7-72 |
50” Mower Deck Removal . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . . 7-74 |
|
50” Mower Deck Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-76 |
||
ELECTRICAL |
|
|
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . |
. . 8-1 |
LX Lawn Tractor Service Manual |
iii |
TABLE OF CONTENTS
THIS PAGE INTENTIONALLY LEFT BLANK.
iv |
LX Lawn Tractor Service Manual |
SAFETY INFORMATION
General Information |
The riding mower and attachment operator's manual |
1 |
This symbol means WARNING or |
contain safety information and operating tips for safe |
|
PERSONAL SAFETY INSTRUCTION |
operating practices. Operator's manuals are available |
|
- read the instruction because it has to |
through your Toro parts source or: |
|
do with your safety. Failure to comply |
The Toro Company |
|
with the instruction may result in |
|
|
personal injury or even death. |
Publications Department |
|
|
8111 Lyndale Avenue South |
|
This manual is intended as a service and repair |
Bloomington, MN 55420 |
|
manual only. The safety instructions provided herein |
|
|
are for troubleshooting, service, and repair of the
LX Series Riding Lawn Tractor.
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.
LX Lawn Tractor Service Manual |
1-i |
SAFETY INFORMATION
1
THIS PAGE INTENTIONALLY LEFT BLANK.
1-ii |
LX Lawn Tractor 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
2
|
Figure 1 |
|
|
||
Inch Series Bolts and Screws |
||
|
|
|
(A) Grade 1 |
|
(C) Grade 8 |
(B) Grade 5 |
|
|
|
|
|
Figure 2
Metric Bolts and Screws
(A) Class 8.8 |
(B) Class 10.9 |
|
|
LX Lawn Tractor Service Manual |
2-1 |
SPECIFICATIONS
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch Series)
|
|
|
Grade 1, 5, & |
SAE Grade 1 Bolts, Screws, |
SAE Grade 5 Bolts, Screws, |
SAE Grade 8 Bolts, Screws, |
|||||||||||||
|
|
Thread Size |
8 with Thin |
Studs, & Sems with Regular |
Studs, & Sems with Regular |
Studs, & Sems with Regular |
|||||||||||||
|
|
Height Nuts |
Height Nuts (SAE J995 Grade |
Height Nuts (SAE J995 Grade |
Height Nuts (SAE J995 Grade |
||||||||||||||
|
|
|
|||||||||||||||||
|
|
|
|
|
2 or Stronger Nuts) |
2 or Stronger Nuts) |
|
2 or Stronger Nuts) |
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|||||||||
2 |
|
|
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 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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.
2-2 |
LX Lawn Tractor Service Manual |
SPECIFICATIONS
Standard Torque for Dry, Zinc, and Steel Fasteners (Metric Fasteners)
|
|
Class 8.8 Bolts, Screws, and Studs with |
Class 10.9 Bolts, Screws, and Studs with |
|
|
||||||||
Thread Size |
|
Regular Height Nuts |
|
|
Regular Height Nuts ( |
|
|
||||||
|
|
|
(Class 8 or Strong 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 |
|
|
||||||
2 |
|||||||||||||
|
|
|
|
|
|
|
|||||||
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 |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
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.
LX Lawn Tractor Service Manual |
2-3 |
SPECIFICATIONS
Other Torque Specifications
SAE Grade 8 Steel Set Screws
|
|
|
Recommended Torque |
|
2 |
|
Thread Size |
||
|
|
|
||
|
|
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 |
|
|
|
|
|
Wheel Bolts and Lug Nuts
Thread Size |
Recommended Torque** |
||
|
|
|
|
7/16 - 20 UNF |
65 ± 10 ft-lb |
88 ± 14 N-m |
|
Grade 5 |
|||
|
|
||
|
|
|
|
1/2 - 20 UNF |
80 ± 10 ft-lb |
108 ± 14 N-m |
|
Grade 5 |
|||
|
|
||
|
|
|
|
M12 X 1.25 |
80 ± 10 ft-lb |
108 ± 14 N-m |
|
Class 8.8 |
|||
|
|
||
|
|
|
|
M12 X 1.5 |
80 ± 10 ft-lb |
108 ± 14 N-m |
|
Class 8.8 |
|||
|
|
||
|
|
|
|
** For steel wheels |
and non-lubricated |
fasteners. |
Thread Cutting Screws
(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 |
|
|
|
|
Conversion Factors
in-lb X 11.2985 - N-cm
ft-lb X 1.3558 = N-m
Thread Cutting Screws
(Zinc Plated Steel)
Thread |
Threads per Inch |
Baseline Torque* |
||
|
|
|||
Size |
|
|
||
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 and finish must be considered when determining specific torque values. All torque values are based on nonlubricated fasteners.
N-cm X - 0.08851 = in-lb
N-cm X 0.73776 - ft-lb
2-4 |
LX Lawn Tractor Service Manual |
SPECIFICATIONS
Equivalents and Conversions
2
LX Lawn Tractor Service Manual |
2-5 |
SPECIFICATIONS
Product Specifications
|
|
Name |
LX420 |
LX425 |
|
LX460 |
LX465 |
LX500 |
|
|
Engine |
18 HP |
20 HP |
|
20 HP |
20 HP |
22 HP |
|
|
|
Single Cylinder |
Single Cylinder |
|
Single Cylinder |
Single Cylinder |
Twin Cylinder |
|
|
|
Kohler Courage |
Kohler Courage |
|
Kohler Courage |
Kohler Courage |
Kohler Courage |
2 |
|
|
||||||
|
RPM Setting - |
3450 + 75 |
3450 + 75 |
|
3450 + 75 |
3450 + 75 |
3300 + 75 |
|
|
High |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RPM Setting – |
1700 + 150 |
1700 + 150 |
|
1700 + 150 |
1700 + 150 |
1750 + 150 |
|
|
Low |
|
|
|
|
|
|
|
|
Construction |
|
|
12 Gauge Steel Frame |
|
||
|
|
|
|
|
|
|
||
|
|
Fuel Capacity |
|
|
3.0 Gallon (11.4 Liters) |
|
||
|
|
Wheel Base |
46” (116.8cm) |
46” (116.8cm) |
|
46” (116.8cm) |
46” (116.8cm) |
46” (116.8cm) |
|
|
Overall Length |
68” (172.7cm) |
68” (172.7cm) |
|
68” (172.7cm) |
68” (172.7cm) |
68” (172.7cm) |
|
|
Overall Width |
42” (114.3cm) |
42” (114.3cm) |
|
48” (127.9cm) |
49” (124.4cm) |
54” (137.2cm) |
|
|
Overall Height |
43” (109.2cm) |
43” (109.2cm) |
|
43” (109.2cm) |
43” (109.2cm) |
43” (109.2cm) |
|
|
Weight |
498 lbs. |
498 lbs. |
|
501 lbs. |
498 lbs. |
525 lbs. |
|
|
(approximate) |
(225.9kg) |
(225.9kg) |
|
(227.25kg) |
(225.9kg) |
(238kg) |
|
|
Traction System |
CVT* Transaxle |
CVT* Transaxle |
|
CVT* Transaxle |
Hydro-Gear |
CVT* Transaxle |
|
|
|
|
|
|
|
LT-0510 |
|
|
|
Ground Speed – |
0 – 5.5 mph |
0 – 5.5 mph |
|
0 – 5.5 mph |
0 – 6.4 mph |
0 – 5.5 mph |
|
|
Forward |
|
|
|
|
|
|
|
|
Ground Speed – |
0 – 2.3 mph |
0 – 2.3 mph |
|
0 – 2.3 mph |
0 – 2.5 mph |
0 – 2.3 mph |
|
|
Reverse |
|
|
|
|
|
|
|
|
Front Tires |
|
|
|
15 x 6 |
|
|
|
|
Rear Tires |
20 x 8 |
20 x 8 |
|
20 x 8 |
20 x 8 |
20 x 10 |
|
|
Tire Pressure |
|
|
|
14psi / 10psi |
|
|
|
|
(Front/Rear) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Turning Radius |
|
|
|
18” (46cm) |
|
|
|
|
|
|
|
|
|||
|
|
Electrical |
|
Voltage: 12-volt Negative |
|
|||
|
|
System |
|
Ground Battery: 190 CCA |
|
|||
|
|
|
|
Alternator: 15 Amp Regulated |
|
|||
|
|
|
|
|
|
Fuse: 20 Amp |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
42”, Two Blade, |
42”, Two Blade, |
|
46”, Three Blade, |
46”, Three Blade, |
50”, Three Blade, |
|
|
Mower Deck |
13 Gauge Steel |
13 Gauge Steel |
|
12 Gauge Steel |
12 Gauge Steel |
12 Gauge Steel |
CVT = Constant Velocity Transaxle
2-6 |
LX Lawn Tractor Service Manual |
CHASSIS
Front Pivot Axle Replacement
5.Unplug the headlights from the wire harness (Fig. 003).
Removal
1. |
Disconnect the negative and then the positive |
|
|
|
|
|
battery cable. |
|
|
|
|
2. |
Remove the mower deck: 42” deck on page 7-64; |
|
|
|
|
|
46” deck on page 7-69; 50” deck on page 7-74. |
|
|
|
|
3. |
Remove the deck rod from the deck hanger bracket |
|
|
|
|
|
(Fig. 001). |
|
|
|
|
|
3 |
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Fig 003 |
PICT-7064 |
6. Remove the hood from the frame (Fig. 004).
Fig 001 |
PICT-7399a |
4. Raise the hood (Fig. 002).
Fig 004 |
PICT-7066 |
Fig 002 |
PICT-7063 |
LX Lawn Tractor Service Manual |
3-1 |
CHASSIS
7.Elevate and secure the front end of the machine so the front axle can be accessed.
8.Remove the hub caps from the two front tires (Fig. 005).
10. Remove the washer from the two axles (Fig. 007).
3
Fig 007 |
PICT-7402 |
Fig 005 |
PICT-7400 |
9.Remove and discard the cotter pins from the two axles (Fig. 006).
11.Remove the wheel and tire assembly from the two axle assemblies (Fig. 008).
Fig 008 |
PICT-7403 |
Fig 006 |
PICT-7401 |
3-2 |
LX Lawn Tractor Service Manual |
CHASSIS
Note: There are inner and outer bushings included with the rim assembly. When the wheel is removed, the inner bushing may come off with the wheel or stay on the axle.
Bushing stays in rim of tire (Fig. 009):
Fig 009 |
PICT-7410a |
Bushing stays on axle (Fig. 010):
12.Remove the bushing from each of the axle assemblies if it stayed in place at tire assembly removal (Fig. 011).
3
Fig 011 |
PICT-7415a |
13.Remove the nut securing the ball joint to the axle assemblies (Fig. 012).
Fig 012 |
PICT-7421 |
Fig 010 |
PICT-7413 |
LX Lawn Tractor Service Manual |
3-3 |
CHASSIS
14.Remove the ball joint from the axle assembly (Fig. 013).
16.Remove the push nut from the axle assembly (Fig. 015).
3
Fig 013 |
PICT-7423 |
Fig 015 |
PICT-7425 |
15. Remove the cap from the axle assembly (Fig. 014).
17.Remove the axle assembly from the front pivot axle (Fig. 016).
Fig 014 |
PICT-7424 |
Fig 016 |
PICT-7431a |
18. Repeat steps 13-17 to remove the second axle.
3-4 |
LX Lawn Tractor Service Manual |
CHASSIS
19.Cut the cable tie securing the wire harness to the right hand hood pivot bracket (Fig. 017).
21. Support the front pivot axle (Fig. 019).
3
Fig 019 |
PICT-7439a |
Fig 017 |
PICT-7434 |
20.Cut the electrical tape securing the wire harness to the plastic harness guide (Fig. 018).
22.Remove the nuts from the 2 bolts securing the pivot axle and deck hanger bracket to the frame (Fig. 020).
Fig 018 |
PICT-7462a |
Fig 020 |
PICT-7442 |
LX Lawn Tractor Service Manual |
3-5 |
CHASSIS
23.Remove the 4 bolts (2 on the right, 2 on the left) securing the left and right pivot supports to the frame (Fig. 021).
25.Remove the second bolt and deck hanger plate from the pivot axle (Fig. 023).
3
Fig 023 |
PICT-7447 |
Fig 021 |
PICT-7436 |
24.Remove one of the bolts securing the deck hanger plate and pivot axle to the frame (Fig. 022).
26.Remove the muffler, heat shield and bracket assembly (Fig. 024).
Fig 024 |
PICT-7449 |
Fig 022 |
PICT-7444 |
3-6 |
LX Lawn Tractor Service Manual |
CHASSIS
27. Remove the pivot bar bracket (Fig. 025).
Installation
1.Position the front pivot axle to the front of the frame (Fig. 027).
3
Fig 025 |
PICT-7450 |
28. Remove the front pivot axle (Fig. 026).
Fig 027 |
PICT-7451 |
2.Position the pivot bar bracket to the front pivot axle (Fig. 028).
Fig 026 |
PICT-7451 |
Fig 028 |
PICT-7450 |
LX Lawn Tractor Service Manual |
3-7 |
CHASSIS
3.Position the muffler, heat shield and bracket assembly to the frame (Fig. 029).
4.Loosely install 4 bolts securing the left and right pivot supports to the frame (2 bolts on the left side bracket and 2 bolts on the right side bracket) (Fig. 031).
3
Fig 029 |
PICT-7449 |
Fig 031 |
PICT-7436 |
Note: The tailpipe needs to be aligned and inserted into the muffler upon assembly (Fig. 030).
5.Position the deck hanger plate to the pivot axle and install a shoulder bolt (Fig. 032).
Fig 030 |
PICT-7457 |
Fig 032 |
PICT-7447 |
3-8 |
LX Lawn Tractor Service Manual |
CHASSIS
6.Align the second hole in the deck hanger bracket with the pivot axle and install a second shoulder bolt (Fig. 033).
8.Tighten the 4 bolts securing the left and right pivot supports to the frame (2 bolts on the left side bracket and 2 bolts on the right side bracket) (Fig. 035).
3
Fig 033 |
PICT-7444 |
Fig 035 |
PICT-7436 |
7.Loosely install a nut onto the 2 shoulder bolts securing the pivot axle and deck hanger bracket to the frame (Fig. 034).
9.Torque the 2 nuts installed on the shoulder bolts securing the pivot axle and deck hanger bracket to the frame to 30 + 3 ft-lbs. (40.67 + 4.06 Nm) (Fig. 036).
Fig 034 |
PICT-7442 |
Fig 036 |
PICT-7460 |
LX Lawn Tractor Service Manual |
3-9 |
CHASSIS
10.Apply electrical tape to secure the wire harness to the plastic harness guide (Fig. 037).
Note: The following steps, 12 thru 21, should be done on both the right and left sides of the axle.
12.Insert the axle assembly into the pivot axle (Fig. 039).
3
Fig 037 |
PICT-7464 |
11.Secure the wire harness to the right hand hood pivot bracket with a cable tie (Fig. 038).
Fig 039 |
PICT-7468a |
13.Position the ball joint into the axle assembly (Fig. 040).
Fig 038 |
PICT-7466 |
Fig 040 |
PICT-7469a |
3-10 |
LX Lawn Tractor Service Manual |
CHASSIS
14.Install a nut onto the ball joint and torque to 12.5 to 29 ft-lbs. (16.94 to 39.54 Nm) (Fig. 041).
16. Apply grease to the axle assembly (Fig. 043).
3
Fig 043 |
PICT-7472 |
Fig 041 |
PICT-7470a |
15.Install a cap/push nut onto the axle assembly (Fig. 042).
17.Slide the wheel and tire assembly onto the axle assembly (Fig. 044).
Note: The wheel bearing is installed in the rim.
Fig 042 |
PICT-7471 |
Fig 044 |
PICT-7473 |
LX Lawn Tractor Service Manual |
3-11 |
CHASSIS
18. Install a washer onto the axle assembly (Fig. 045). |
20. Apply grease to the wheel bearing (Fig. 047). |
3
Fig 045 PICT-7474a Fig 047 PICT-7477a
19. Install a cotter pin into the axle assembly (Fig. 046). 21. Install the hub cap (Fig. 048).
Fig 046 |
PICT-7475a |
Fig 048 |
PICT-7478 |
3-12 |
LX Lawn Tractor Service Manual |
CHASSIS
22. |
Lower the machine. |
25. Lower the hood (Fig. 051). |
23. |
Position the hood on the chassis (Fig. 049). |
|
|
3
Fig 051 |
PICT-7063 |
Fig 049 |
PICT-7066 |
26. Install the deck rod into the deck hanger bracket (Fig. 052).
24. Plug the headlights into the wire harness (Fig. 050).
Fig 052 |
PICT-7399a |
Fig 050 |
PICT-7064 |
27. Install the mower deck: 42” deck on page 7-67; 46” deck on page 7-72; 50” deck on page 7-76.
28. Connect the positive and then the negative battery cable.
29. Check the toe-in measurement and adjust as needed. Refer to “Front Wheel Toe-In Measurement” on page 3-85.
LX Lawn Tractor Service Manual |
3-13 |
CHASSIS
Axle Assembly Replacement
4.Remove the washer from the axle assembly (Fig. 055).
Removal
1.Raise the front of the machine.
2.Remove the hub cap (Fig. 053).
3
Fig 053 |
PICT-7067 |
3.Remove the cotter pin from the axle assembly (Fig. 054).
Fig 055 |
PICT-7070 |
5.Remove the wheel and tire assembly from the axle assembly (Fig. 056).
Fig 056 |
PICT-7072 |
Fig 054 |
PICT-7069 |
3-14 |
LX Lawn Tractor Service Manual |
CHASSIS
Note: There are inner and outer bushings included with the rim assembly. When the wheel is removed, the inner bushing may come off with the wheel or stay on the axle assembly.
Bushing stays in rim of tire (Fig. 057):
Fig 057 |
PICT-7410a |
Bushing stays on axle assembly (Fig. 058):
6.Remove the bushing from each of the axle assemblies if it stayed in place at tire assembly removal (Fig. 059).
3
Fig 059 |
PICT-7415a |
7.Remove the nut securing the ball joint to the axle assembly (Fig. 060).
Fig 060 |
PICT-7077a |
Fig 058 |
PICT-7413 |
LX Lawn Tractor Service Manual |
3-15 |
CHASSIS
8.Remove the ball joint from the axle assembly (Fig. 061).
10.Remove the push nut from the axle assembly (Fig. 063).
3
Fig 061 |
PICT-7078 |
Fig 063 |
PICT-7425 |
9. Remove the cap from the axle assembly (Fig. 062).
11.Remove the axle assembly from the axle pivot (Fig. 064).
Fig 062 |
PICT-7424 |
Fig 064 |
PICT-7087 |
3-16 |
LX Lawn Tractor Service Manual |