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Chapter 1: Introduction
Professional Service Manual Intent.................................................................... 1
Safety .................................................................................................................1
Fasteners ...........................................................................................................3
Assembly Instructions ........................................................................................3
Model and Serial Number ...................................................................................5
Maintenance .......................................................................................................5
Spark Plugs ........................................................................................................6
Air Filter.............................................................................................................. 7
Oil Type and Capacity ........................................................................................8
Changing the oil ...............................................................................................10
Fuel system ......................................................................................................11
Servicing the Fuel System ................................................................................11
Fuel Filter .........................................................................................................11
Valve lash .........................................................................................................12
Exhaust system ................................................................................................14
Cleaning the Engine .........................................................................................14
General Torque Specifications .........................................................................14
Chapter 2: Basic Troubleshooting
Definitions ........................................................................................................15
Introduction ......................................................................................................15
Steps to Troubleshooting .................................................................................15
Define the Problem ..........................................................................................15
Identify Factors that Could Cause the Problem ................................................17
Repairing the Problem ..................................................................................... 21
Prime Test ........................................................................................................22
Leak-down Test ................................................................................................22
Compression Test ............................................................................................24
PCV Testing .....................................................................................................25
Troubleshooting Flow Charts ...........................................................................26
Chapter 3: Air Intake System
Air Filter ............................................................................................................31
Air Filter Housing ..............................................................................................32
Carburetor Insulator .........................................................................................33
Fuel Line ..........................................................................................................37
Inspect the Fuel Lines ......................................................................................37
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