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478 Series
MTD 478 Series Manuals
Manuals and User Guides for MTD 478 Series. We have
2
MTD 478 Series manuals available for free PDF download: Professional Shop Manual, Illustrated Parts List
MTD 478 Series Professional Shop Manual (92 pages)
Brand:
MTD
| Category:
Engine
| Size: 4 MB
Table of Contents
Table of Contents
3
Chapter 1: Introduction
7
Professional Shop Manual Intent
7
Assembly
7
Model and Serial Number
9
Maintenance
9
Oil Type and Capacity
10
Changing the Oil
11
Fuel
11
Fuel Filters
11
Valve Lash
13
Cleaning the Engine
14
General Torque Specifications
15
Maintenance Chart
15
Frequently Used Specifications
16
Chapter 2: Basic Troubleshooting
17
Definitions
17
Introduction
17
Steps to Troubleshooting
17
Define the Problem
17
Identify Factors that Could Cause the Problem
18
Repairing the Problem
22
Prime Test
22
Leak-Down Test
22
Compression Test
23
PCV Testing
24
Chapter 3: Air Intake System
27
Heat Box
27
Carburetor and Insulator
28
Chapter 4: The Fuel System and Governor
31
Inspecting the Fuel
31
Test Fuel for Alcohol
31
Fuel Tank Vent
32
To Test the Cap Vent
32
The Fuel Filter
32
Inspect the Fuel Lines
33
The Fuel Tank
33
Choke
34
Primers
35
Carburetors
35
Inspecting the Carburetor
35
Disassembly and Rebuilding the Carburetor
36
Governor
40
Governor Arm
40
Governor Shaft
41
Governor Cup and the Governor Gear
42
Governor Adjustment
42
Chapter 5: Lubrication
43
Oil Type and Quantity
43
Oil Dip Stick
43
Dip Stick Tube Removal
44
Lubrication System
44
Positive Crankcase Ventilation Valve
45
Chapter 6: Starter and Charging Systems
47
Recoil Starter Removal
47
Starter Cup
47
Starter Rope
48
Starter Pulley and Recoil Spring
49
Electric Starter
51
Charging System
52
Stator
54
Rotor
54
Chapter 7: Ignition System
55
Troubleshooting the Ignition System
55
Stop Switch
56
Remote (Ignition) Stop Switch
57
Test for Ignition that Won't Turn off
58
The Module
59
Module Removal
60
Installing the Module and Setting the Air Gap
60
Flywheel
61
About the Spark Plug
62
Cleaning the Spark Plug
62
Inspection of the Spark Plug
62
Spark Plug Removal
63
Chapter 8: Exhaust
65
Chapter 9: Cylinder Head
67
Cylinder Head Removal
67
Cylinder Head Installation
69
Valves
70
Chapter 10: Crankshaft, Piston and Connecting Rod
73
Crankshaft Inspection
75
Piston Inspection
76
Connecting Rod Inspection
78
Cylinder Inspection
78
Balance Shaft (483 & 490)
79
Reassembly
80
Engine Specifications Chart
82
Engine Torque Values Chart
86
Chapter 11: Failure Analysis
87
Abrasive Ingestion
87
Insufficient Lubrication
89
Engine Overspeed
90
Overheated
91
Mechanical Breakage/ Wear
92
Detonation/Preignition
92
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MTD 478 Series Illustrated Parts List (12 pages)
MTD Self-Propelled Mower Illustrated Parts
Brand:
MTD
| Category:
Lawn Mower
| Size: 1 MB
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