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Subaru EX17 Service Manual

Subaru EX17
113 pages
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CONTENTS
Section Title Page
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2. DESCRIPTION OF FUEL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
3. DISASSEMBLY AND REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3-1 PREPARATIONS AND PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3-2 SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3-3 DISASSEMBLY PROCEDURES (DIFFERENCE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3-4 REASSEMBLY PROCEDURES (DIFFERENCE). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4. WIRING DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
5. THROTTLE BODY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5-1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5-2 FUNCTIONS AND CONSTRUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5-3 FUEL SYSTEM OUTLINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5-4 FUEL SYSTEM TESTING AND DIAGNOSIS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
6. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
6-1 FUEL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
7. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
7-1 ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
8. MAINTENANCE AND STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
9. ORGANIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
PREFACE
This portion of the manual covers the service information, trouble shooting procedures of the
EX21 E FI (Electronic Fuel injection) engine.
Careful observance of the instructions given herein will result in better, safer and faster
service work.
For more detailed instructions of disassembling and reassembling procedures, please
refer back to the standard service procedure .

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Subaru EX17 Specifications

General IconGeneral
Displacement169 cc
Compression Ratio8.5:1
Maximum Output4.2 kW (5.7 HP) / 4000 rpm
Ignition SystemTransistorized magneto ignition
Starting SystemRecoil starter
Dry Weight15.0 kg
Oil Capacity0.6 L
Bore x Stroke67.0 x 48.0 mm
Maximum Torque2500 rpm
Fuel Tank Capacity3.6 L
Engine Type4-stroke, OHV, single cylinder, air-cooled

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