Toro 74178 - Page 83

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ELECTRICAL SYSTEMS

7 - 8 Mid-Mount Z Service Manual

Models

74218

74219

Start Circuit

Table of Contents

About this Manual5
Table of Contents6
Specifications12
- Engine12
- Unit Dimensions13
- Hydraulic System14
- Torque Specifications14
  - Hydraulic Hoses & Fittings14
- Chassis14
Maintenance16
- Recommended Maintenance Schedule16
- Checking the Oil Level17
- Changing Oil and Filter17
- Servicing the Air Cleaner18
- Removing the Filters18
- Installing the Filters19
- Servicing Models Equipped with the Heavy-Duty Air Cleaner19
  - Using the Filter Minder19
- Removing the Air Cleaner20
  - Cleaning the Primary Filter20
  - Installing the Filters20
- Servicing the Air Cleaner Liquid-Cooled Models20
- Cleaning the Engine Fins21
- Servicing the Cooling System22
- Servicing the Fuel Filter24
  - Replacing the Fuel Filter24
- Servicing the Spark Plug25
- Check Valve Clearance25
- Greasing and Lubrication26
Engine28
- External Alternator Remove & Replace28
- Engine Remove & Replace Air-Cooled29
- Engine Remove & Replace Liquid-Cooled30
- Radiator Remove & Replace Liquid-Cooled Mowers35
- Models Equipped with Electronic Fuel Injection (EFI)38
Hydraulic Systems40
- Hydraulic System, Typical40
- Description41
- General Hydraulic Assembly Guidelines41
- Replacing the Pump Drive Belt41
- Pump Removal42
- Adjusting the Hydraulic Pump Neutral42
- Wheel Motor R & R44
Chassis46
- Motion Control Linkage - Remove and Replace46
- Adjusting the Handle Neutral47
- Replacing the Parking Brake and Linkage49
- Adjusting the Parking Brake53
- Description - Fuel System54
- Fuel Tank - Remove and Replace55
- Replace Front Wheel Bearings57
- Front Caster Bearings - Remove & Replace59
Mower Decks62
- Replacing the PTO Drive Belt62
- Mower Deck Removal64
- Spindle Repair65
  - Assembly67
- Deck Mounting, Typical70
- Leveling the Mower71
- Checking for Bent Blades72
- Adjusting the Compression Spring73
- Spindle Assemblies, Typical74
Electrical Systems76
- Alternator, Kohler95
- Regulator/Rectifior96
- Clutch,Electric97
- Electric PTO Clutch Removal98
Solenoid99
- Purpose99
- How It Works99
- Testing99
Starter Electric100
- Purpose100
- How It Works100
- Testing100
Switch Pto/Clutch101
- Purpose101
- How It Works101
- Testing101
Brake Switch102
- Purpose102
- How It Works102
- Testing102
Interlock Module103
- Purpose103
- How It Works103
- Testing103
Hourmeter104
- Purpose104
- How It Works104
- Testing104
Motion Control Switch105
- Purpose105
- How It Works105
- Testing105
Key Switch106
- Purpose106
- How It Works106
- Testing106
Seat Switch107
- Purpose107
- How It Works107
- Testing107
Mercury Switch108
Amp Fuse109
Wiring Harness, Typical110

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