1. INFORMATION..........................................................................................................................................5

1.1 SAFETY ............................................................................................................................................5

1.2 NOTES ..............................................................................................................................................5

1.3 SPECIFICATION ENGINE ..............................................................................................................6

1.4 SERIAL NUMBER ...........................................................................................................................7

1.5 TORQUE VALUES ...........................................................................................................................8

1.6 Special Tools ......................................................................................................................................9

2. MAINTENANCE ......................................................................................................................................10

2.1 MAINTENANCE DATA.................................................................................................................10

2.2 MAINTENANCE SCHEDULE ......................................................................................................11

2.3 FUEL TUBE ....................................................................................................................................11

2.4 THROTTLE OPERATION..............................................................................................................12

2.5 THROTTLE CABLE ADJUSTMENT............................................................................................12

2.6 AIR CLEANER ...............................................................................................................................12

2.7 SPARK PLUG .................................................................................................................................12

2.8 IDLE SPEED ...................................................................................................................................13

2.9 DRIVE CHAIN ...............................................................................................................................13

2.10 BRAKE SYSTEM .........................................................................................................................14

2.11 WHEELS AND TIRES ..................................................................................................................16

2.13 TOE-IN ..........................................................................................................................................16

3. ENGINE REMOVE AND INSTALLATION............................................................................................18

3.1 General Information.........................................................................................................................18

3.2 ENGINE REMOVAL ......................................................................................................................18

3.3 ENGINE INSTALLATION .............................................................................................................19

4-1 Mechanism Diagram .......................................................................................................................20

4-2 Precautions in Operation .................................................................................................................21

4-3 Troubleshooting...............................................................................................................................21

4-4 Engine Oil........................................................................................................................................22

4-5 Engine Oil Strainer Clean................................................................................................................22

4-6 Oil Pump ..........................................................................................................................................23

4-7 Gear Oil ...........................................................................................................................................23

5. FUEL SYSTEM.........................................................................................................................................24

5-1 Mechanism Diagram .......................................................................................................................24

5-2 Precautions in Operation .................................................................................................................25

5-3 Trouble Diagnosis ............................................................................................................................26

5-4 Carburetor Remove / Install ............................................................................................................27

5-5 Air Cut-Off Valve ............................................................................................................................28

5-6 Throttle Valve ..................................................................................................................................29

5-7 Float Chamber .................................................................................................................................30

5-8 Adjustment of Idle Speed ................................................................................................................32

5-9 Fuel Tank .........................................................................................................................................33

5-10 Air Cleaner ....................................................................................................................................34

6. CYLINDER HEAD/VALVE .....................................................................................................................35

6-1 Mechanism Diagram .......................................................................................................................35

6-2 Precautions in Operation .................................................................................................................36

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