Subaru ER12 Bedienungsanleitung

SERVICE MANUAL

ER12ER12

1. SPECIFICATIONS............................................... 1

2. PERFORMANCE ............................................... 2

3. FEATURES .................................................... 4

4. GENERAL DESCRIPTION OF ENGINE COMPONENTS . . . . . . . . . . . . . . . . 5

5. DISASSEMBLY AND REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5-1 PREPARATIONS AND PRECAUTIONS                            12

5-2 SPECIAL TOOLS 12

5-3 DISASSEMBLY PROCEDURE  13

5-4 REASSEMBLY PROCEDURE 27

6. ENGINE OIL ................................................... 43

7. LUBRICATION SYSTEM ......................................... 44

8. MAGNETO .................................................... 47

9. WIRING DIAGRAM.............................................. 48

10. AUTOMATIC DECOMPRESSION SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . 49

11. CARBURETOR................................................ 50

12. RECOIL STARTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

13. INSTALLATION................................................ 63

14.TROUBLESHOOTING........................................... 65

15. STANDARD REPAIR TABLES.................................... 68

15-1 STANDARD DIMENSIONS AND LIMITS OF USE                   68

15-2 SERVICE DATA (The following are only for your reference)           73

15-3 TIGHTENING TORQUE 74

15-4 AIR GAP AND CLEARANCE 74

16.MAINTENANCE AND STORAGE .................................. 75

CONTENTS

Section Title Page

1. SPECIFICATIONS

*Specifications are subject to change without notice

Model ER12

Type Air-Cooled, 4-Cycle, Single-Cylinder,

Horizontal P.T.O. Shaft, OHC Gasoline Engine

Bore × Stroke mm (in) 60 × 43 (2.36 × 1.69)

Piston Displacement ml (cuin) 121 (7.38)

Compression Ratio 9.6

Maximum Output kW(HP)/rpm 2.6(3.5)/3600

Maximum Torque

・

m / rpm

(kgf

・

m / rpm)

(ft

・

lb / rpm)

7.3/2400

(0.74/2400)

(5.38/2400)

Direction of Rotation Counterclockwise as viewed from the P.T.O. shaft side

Valve Arrangement Overhead cam system

Cooling System Forced air cooling system

Lubrication System Trochoid Pump, Forced and Splash lubrication system

Lubricant Automotive detergent oil - SAE; #20, #30 or 10W-30

API service class; SE or higher (SG, SH or SJ is recommended)

Capacity of Lubricant L (US gal) 0.35 (0.092)

Carburetor Horizontal draft, Float type or Diaphragm type

Fuel Automobile unleaded gasoline

Fuel Supply System Gravity type

Spark Plug NGK CR5HSB

Starting System Recoil starter

Governor Centrifugal ﬂyweight type

Air Cleaner system Semi wet type

Dry Weight kg (lb) 9.9 (21.78)

Dimensions (L x W x H) mm (in) 264 x 288 x 334 (10.39 x 11.34 x 13.15) : Float type Caburetor

264 x 288 x 336 (10.39 x 11.34 x 13.23) : Diaphragm type Caburetor

2. PERFORMANCE

2-1 MAXIMUM OUTPUT

The Maximum output is the output of an engine with its throttle valve fully opened and considering that all the

moving parts are properly broken in

A new engine may not produce full maximum output while its moving parts are still not broken-in

NOTE :

Power curves shown in the following charts are made in conformity with SAE internal combustion engine

standard test code J1349

2-2 CONTINUOUS RATED OUTPUT

The continuous rated output is the output of an engine at optimum governed speed which is most favorable

from the view point of engin’s life and fuel consumption

When the engine is installed on a certain equipment, it is recommended that the continuous output required

from the equipment to be kept below this continuous rated output

2-3 MAXIMUM TORQUE

The maximum torque is the torque at the output shaft when the engine is producing maximum output at a

specific rpm

2-4. PERFORMANCE CURVES

N・m

2000 3000 4000

6.0

7.0

8.0

0.6

0.7

0.8

0.9

1.0

2.0

3.0

1.0

2.0

3.0

4.0

[HP]

[kgf・m]

r.p.m.REVOLUTION

TORQUE

OUTPUT

RECOMMENDED

HORSEPOWER

RANGE

MAXIMUM

TORQUE

MAXIMUM

HORSEPOWER

3. FEATURES

3-1. DEVELOPED EXCLUSIVELY FOR RAMMER

The new ER12 has been developed exclusively for rammer, which especially requires the engine for high

durability, high power output and superb mountability among many construction machineries

3-2. LIGHTWEIGHT AND COMPACT DESIGN

ER12 has realized lightweight and compact design, while achieving high power output of 26kW (engine

displacement 120cc) that enables to widely fulfill the operating weight of 60 to 80kg-class rammers, the

lightest-in-class* weight of 99kg, and the smallest-in-class* on the length and width

3-3. DESIGNED TO OFFER SUPERIOR MOUNTABILITY

ER12 has been designed to offer superior mountability, which is valued for rammer engine, by the optimal

center of gravity for right-and-Ieft balance

3-4. USER'S SAFETY AS WELL AS USER FRIENDLINESS

ER12 offers several new functions as standard equipment, which has been required to rammer engine for

user's safety as well as user friendliness, such as oil sensor that monitors the oil level not only at starting-up

but also during operation, and automatic shutoff device that stops engine when the rammer rolls over or has

no operation with idling

3-5. EASE OF MAINTENANCE AND ECONOMICAL EFFICIENCY

ER12 has beeh designed in consideration of ease of maintenance and economical efficiency, such as

adopting solid crank case or the newly developed resinous dust-proof air cleaner for realizing ease of

maintenance, realizing longer operational hours without oil-refilling

* FHI researches

4. GENERAL DESCRIPTION OF ENGINE COMPONENTS

4-1 CYLINDER AND CRANKCASE

The cylinder and crankcase are aluminum die-casting

as a single piece A special cast iron cylinder liner is

molded into the aluminum die-casting

The crankcase has a mounting surface on the output

shaft side to which the main bearing cover is attached

And the lib is made for the crankcase room center

cum oil shelter plate, that improvement breather

function and strength up

And inside of the crankcase has large rib for oil shelter

which to inprove the breather function and stiffness

4-2 MAIN BEARING COVER

The main bearing cover is an aluminum die-casting

with heavy-duty structure to endure to install on

rammers, which is mounted on the output shaft side of

the crankcase By removing the main bearing cover,

the inside of the engine can be inspected with ease

Pilots and bosses are machined into the cover for

direct mounting of the engine onto rammers

And it have suction pipe, oil pump, oil filter and oil

pressure switch

4-3 CRANKSHAFT

The crankshaft is forged carbon steel, and the crank

pin is high-frequency inductionhardened

The crank pulley used to drive the timing belt and the

gear used to drive the governor gear are pressed into

the output end of the shaft

4-4 CONNECTING ROD AND PISTON

The connecting rod is a specially heat-treated

aluminum alloy die-casting Its large and small ends

function as bearings The piston is an aluminum alloy

casting with grooves for mounting one compression

ring and one oil ring

JCC

4-7 VALVE ARRANGEMENT

This engine has a belt-driven overhead cam and

overhead valve construction, with a single cam

performing both intake and exhaust operations

4-6 CAMPULLEY

The campulley is made of special nylon They are

constructed as a single piece The campulley is

provided with intake and exhaust cam, and the

decompression release lever is mounted on the

sprocket shaft end side

EXHAUST VALVE INTAKE VALVE

TOP

RING

OIL

RING

TAPER

THREE-PIECE

CONSTRUCTION

4-5 PISTON RINGS

The piston rings are made of special cast iron The profile of the top ring is a tapered face

The oil ring is designed for better sealing and less oil consumption, in combination with 3 pieces

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