Subaru EX17 - Service Manual

Other manuals for Subaru EX17

Manual12 pages

Questions and Answers

T
timothy78Jul 26, 2025
How to fix abnormal engine noise in my Subaru Engine?
- M
  Michael HallJul 26, 2025
  Abnormal engine noise in your Subaru Engine can stem from several issues. It could be related to ignition system problems, in which case you should inspect and tighten the components. Alternatively, the issue might be with the fuel system, requiring you to clean, adjust, or replace the carburetor. The cylinder head may also be the source of the noise and needs cleaning. Finally, valve system problems may need adjustment.
H
Hannah Wright DDSJul 30, 2025
Why is my Subaru EX17 having starting difficulties?
- B
  bryce81Jul 30, 2025
  Starting difficulties in your Subaru Engine can stem from several issues. It could be related to ignition system problems, in which case you should adjust the gap, replace or clean the components. Alternatively, the issue might be with the fuel system, requiring you to refill, clean, or replace parts. Engine core component problems can also cause this; check and retighten, repair or replace components, adjust, retighten and replace the gasket, or simply retighten as needed.
B
Bryce CuevasAug 4, 2025
What to do if my Subaru EX17 Engine overheats?
- J
  Jill RodriguezAug 4, 2025
  If your Subaru Engine is overheating, several factors could be the cause. The engine itself might need cleaning. It could also be due to poor quality engine oil, which would require replacement. A lean fuel/air mixture could be the culprit, necessitating a check and adjustment of the carburetor. Excessive backpressure in the exhaust system could also cause overheating, so check, clean, or replace the exhaust system. Finally, ensure you are not overloading the engine; adjust to the rated load.
L
Leslie BaileyAug 9, 2025
What to do if my Subaru Engine has poor output?
- B
  Bryan CaldwellAug 9, 2025
  If your Subaru Engine has poor output, this could be due to insufficient compression, which means you should retighten and replace the gasket. Ignition system problems can also cause poor output, requiring replacement of parts. Another potential cause is fuel system malfunction, so overhaul and clean the system. Lastly, low air intake volume could be the problem, so clean or replace the air intake components.
V
Victoria WilsonAug 14, 2025
Why is my Subaru EX17 rough idling?
- T
  Thomas BaileyAug 14, 2025
  Rough idling in your Subaru Engine can be attributed to several factors. The carburetor system may need adjustment. The intake system might require checking and tightening, as well as gasket replacement. A damaged cylinder head may also be the cause, requiring replacement. Issues within the valve system may need adjustment, and the ignition system may need checking, with potential adjustment or plug replacement.
T
Tara FitzgeraldAug 19, 2025
What causes excessive engine oil consumption in a Subaru EX17 Engine?
- B
  Barbara PriceAug 19, 2025
  Excessive engine oil consumption in your Subaru Engine could be due to oil leakage, which requires tightening. Another cause could be oil up, so you should replace the oil.

Summary

Engine Performance

Maximum Output

Description of maximum output for engine models.

Continuous Rated Output

Description of continuous rated output for engine models.

Maximum Torque

Description of maximum torque for engine models.

Performance Curves

Performance curves for different engine models.

Engine Features

Extremely Easy Start - No Kick-Back

Extreme Power and Performance

General Description of Engine Components

Disassembly and Reassembly Procedures

Preparations and Precautions

Guidelines for disassembly and reassembly.

Special Tools

Engine Oil Information

Adding and Changing Engine Oil

Magneto and Ignition System

Magneto Inspection

Procedures for inspecting the magneto.

Ignition System (EX13,17,21)

Ignition system details for EX13, 17, and 21 models.

Ignition System (EX27)

Ignition system details for the EX27 model.

Wiring Diagrams

Model Without Electric Starter

Wiring diagram for non-electric start models.

Model With Electric Starter (EX17, 21)

Wiring diagram for EX17 and 21 electric start models.

Model With Electric Starter (EX27)

Wiring diagram for EX27 electric start model.

Model With Oil Sensor

Electric Starter System

Electric Starter Specifications

Operating Principles

Carburetor Service

Carburetor Specifications

Functions and Construction

Disassembly and Reassembly

Procedures for carburetor service.

Recoil Starter

Disassembly Procedure

Steps to disassemble the recoil starter.

Reassembly Procedure

Steps to reassemble the recoil starter.

Checking After Reassembly

Post-reassembly checks for the recoil starter.

Troubleshooting Engine Issues

Engine Starting Problems

Troubleshooting for engine starting difficulties.

Standard Repair Tables

Standard Dimensions and Limits of Use

Specifications for part replacement and wear limits.

Tightening Torque Values

Torque values for various fasteners.

Maintenance and Storage Procedures

Daily Maintenance (Every 8 Hours)

Daily maintenance tasks for the engine.

Initial Maintenance (First 20 Hours)

100-Hour Maintenance (Every 10 Days)

100-200 Hour Maintenance (Monthly)

300-Hour Maintenance

500-600 Hour Maintenance (Semi-Annual)

1,000-Hour Maintenance (Annual)

Annual maintenance tasks.

Engine Storage Procedures

Subaru EX17 Specifications

General

Displacement	169 cc
Compression Ratio	8.5:1
Maximum Output	4.2 kW (5.7 HP) / 4000 rpm
Ignition System	Transistorized magneto ignition
Starting System	Recoil starter
Dry Weight	15.0 kg
Oil Capacity	0.6 L
Bore x Stroke	67.0 x 48.0 mm
Maximum Torque	2500 rpm
Fuel Tank Capacity	3.6 L
Engine Type	4-stroke, OHV, single cylinder, air-cooled