EVINRUDE & JOHNSON J21-153C Vehicle Manuals

Manuals and User Guides for EVINRUDE & JOHNSON J21-153C Vehicle. We have 1 EVINRUDE & JOHNSON J21-153C Vehicle manual available for free PDF download: Service Manual

EVINRUDE & JOHNSON J21-153C Service Manual

EVINRUDE & JOHNSON J21-153C Service Manual (81 pages)

21 H.P.

Brand: EVINRUDE & JOHNSON | Category: Offroad Vehicle | Size: 5 MB

Table of Contents

Section 3 General Snowmobile Information

10
- Table of Contents
  10
- Two-Cycle Engine Theory
  11
- Compression
  11
- Spark Plugs
  12
- Carburetion
  13
- Ignition
  13
- Power Flow
  14
  - Primary Drive
    14
  - Secondary Drive
    14
Section 4 Trouble Shooting

16
- Description
  17
- Trouble Shooting Procedures
  17
  - Starting
    17
  - Starting - Manual Starter
    18
  - Running - Low Speed Only
    18
  - Running - High Speed Only
    18
  - Running - High and Low Speed
    19
( Section 5 Tune-Up Procedure

20
- Description
  21
- Factors Affecting Performance
  21
  - Fuel System
    21
- Ignition System
  21
  - Compression
    21
- New Vehicle Delivery
  22
- Tune-Up Procedures
  22
- Compression Check
  23
- Ignition Timing Adjustment
  23
- Carburetor Adjustments
  24
- Compression Release Valve Adjustment
  24
Section 6 Fuel System

26
- High Speed Needle Valve
  28
- Idle Adjustment Screw
  28
  - General Instructions
    29
  - Float and Needle Valve
    29
  - Needle Valves
    29
  - Carburetor Body
    29
  - Core Plugs
    29
  - Reassembly of Carburetor
    30
    
    General Instructions
    30
    
    Float and Float Chamber
    30
    
    Low-Speed Needle
    30
    
    High-Speed Needle
    30
    
    Choke
    30
  - Reassembly of Carburetor to Engine
    30
    
    Leaf Valves
    31
  - Installation
    31
- Fuel Pump
  31
  - Removal
    31
  - Cleaning, Inspection and Repair
    32
  - Reassembly
    32
    
    Fuel Primer
    32
- Air Filter
  32
  - Fuel Tank
    33
- Fuel Line Tie Strap
  33
Section 7 Ignition and Electrical Systems

34
- Description
  35
- Test Equipment
  35
- Magneto
  36
  - Removal
    36
  - Testing
    37
  - Flywheel
    37
  - Breaker Points
    37
  - Condenser
    37
  - Magneto Drive Coils
    38
  - Ignition Coils
    39
  - High Tension Leads
    39
  - Reassembly
    39
- Spark Plugs
  40
- Headlamp Adjustment
  42
Section B Manual Starter

44
- Cleaning, Inspection and Repair
  45
- Description
  45
- Removal and Disassembly
  45
- Reassembly
  46
- Starter Rope Replacement
  47
Section 9 Engine

48
- Description
  49
- Engine Removal
  49
- Engine Disassembly
  50
- Cleaning, Inspection, and Repair
  52
  - Cylinders
    52
  - Gaskets and Gasket Surfaces
    52
  - Pistons
    52
  - Bearings
    53
- Assembly of Engine
  54
  - Pistons, Wrist Pins, and Connecting Rods
    54
  - Piston Rings
    54
  - Crankshaft
    54
  - Cylinders
    55
- Assembly to Chassis
  55
  - Break-In Procedure
    56
- Installation of Engine
  55
- Muffler
  56
  - Removal
    56
  - Reassembly
    57
Section 10 Drive Train

58
- Description
  59
- Primary Drive
  59
- Replacement
  59
- Drive Chain
  61
  - Lubrication
    61
  - Adjustment
    62
  - Removal
    62
- Brake
  62
  - Description
    62
  - Repair
    62
  - Brake Cable and Cam Assembly
    63
  - Final Adjustment Brake
    63
- Secondary Drive
  64
  - Disassembly
    64
  - Cleaning and Inspection
    65
  - Reassembly
    65
Section 11 Steering, Track and Suspension

68
- Description
  69
- Steering
  69
  - Disassembly
    69
  - Cleaning, Inspection and Repair
    69
  - Reassembly
    69
  - Ski Alignment
    70
- Track and Suspension
  70
  - Track Tension Adjustment
    70
  - Track Alignment Adjustment
    70
  - Removal of Trucks and Track
    71
  - Front Axle Disassembly
    71
  - Rear Axle Disassembly
    72
  - Truck Disassembly
    72
  - Cleaning, Inspection and Repair
    72
    
    Track
    72
    
    Trucks and Axles
    72
  - Reassembly
    73
    
    Front Truck
    73
    
    Middle and Rear Trucks
    73
    
    Front Axle
    73
    
    Rear Axle
    73
  - Installation
    73
  - Engine Lubrication
    75
    
    Omc 2+4 Fuel Conditioner
    75
  - Lubrication Recommendations
    76
  - Preventive Maintenance
    77
    
    Air Filter
    77
    
    Fuel Filter
    77
  - Storage
    78
    
    Preparation for Storage
    78
    
    Removal from Storage
    78
  - Internal Circuit Connections
    79
    
    Of Ignition Switch
    79

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