Robin EC08 Service Manual
SERVICE
MANUAL
Models
EC06,EC08
1193s1 20
ROBIN
AMERICA, INC.
ROBIN
TO
WISCONSIN
ROBIN
ENGINE
MODEL
CROSS REFERENCE
LIST
ROBIN
EY08
EY15
EY 15V
EY20
EY2OV
EY23
EY28
EY3
5
EY40
-
EY45V
EY2
1
EY44
EY 18-3
EY25
EY27
EH11
EH12
EH15
EH17
EH21
EH25
EH30
EH30V
EH34
EH34V
EH43V
EC13V
DY23
DY27
DY30
DY3
5
DY4 1
WISCONSIN
ROBIN
SIDE
VALVE
W
1-080
W1-145
W1-145V
W1-185
W1-185V
W1-230
W 1-280
W
1-340
W 1-390
Wl-45OV
EY21W
EY44W
EY18-3W
EY25W
EY27W
OVERHEAD
VALVE
WO1-115
wo1-120
WO1-150
WO1-170
wo1-210
WOl-250
WO 1-300
WO1-300V
WO1-340
WO
1
-340V
WO 1-43 OV
TWO CYCLE
WT1-125V
DIESEL
WRD
1-230
WRD
1-270
-1-300
WRD1-350
WRD1-410
0
0
0
CONTENTS
Section
1 . SPECIFICATIONS
2
.
PERFORMANCE
2-1
2-2
2-3
3
.
FEATURES
4
.
DISASSEMBLY and REASSEMBLY
44-2
4-3
4-4
5
.
CONTACT BREAKER ADJUSTING PROCEDURE (EC06)
6
.
CARBURETOR ADJUSTMENT
7
.
GOVERNOR ADJUSTMENT
Maximum Output
Rated Continuous Output
Maximum Torque and Fuel Consumption Ratio
1
Preparations and Suggestions
Special Tools
.
Disassembly Procedure
Reassembly Procedure
Title
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:
.................................
..................................
at
Maximum Output
........
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;
Page
.
1
2
2
2
2
4
5
5
5
6
9
13
14
15
8
.
TROUBLE-SHOOTING
8-1
8-2
8-3
8-4
8-5
8-6
8-7
9
.
CHECKS and CORRECTIONS
9-
9-2
10
.
MAINTENANCE and STORING
10-
10-2
10-3
10-4
10-5
Starting Trouble
Idling Improper
Overheating and Engine Knocking
Power Drop
Excessive Fuel Consumption
Hunt.ing
Other Troubles
1
Engine Standard Correction Table
Table of Tightening Torque
1
Daily Checks and Maintenance
Every
Every
Yearly Checks and Maintenance
Preparation for Long Abeyance
................................................
50
Hours Checks and Maintenance
150
Hours Checks and Maintenance
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:
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16
16
19
19
19
20
20
20
21
22
24
25
25
25
25
25
25
ECOGD
Fuel
Tank
Cap
Recoil Starter
Muffler Cover
Base
Engine
(optional)
Spark
Plug
overnor Lever
Governor Chamber
(Engine base
is
opti
n
onal.)
ECOGB
Model
Bore
x
Stroke 44mmx40mm
Piston Displacement .60.8 cc 78.5 cc
ECOGD
Air-Cooled, 2-Cycle, Vertical, Piston Valve Type, Single Cylinder Gasoline Engine
ECOGB
I
I.
ECOID
50
mm
ECO~B
x
40
mm
Continuous Rated Output (HP/rpm)
Maximum Output (HP/rpm)
~~
Maximum Torque (kg-m/rpm)
.
Lubrication
~~
Lubricant
I
Carburetor'
Fuel Gasoline-lubricant Mixture (20- 25: 1)
Fuel Consumption Ratio (gr/HP-h)
Fuel Feed Gravity Type
Fuel Tank Capacity 1.5 iitres
Ignition System
Spark Plug
'Starting System
.
_-
.-
~ ~~~
1.6/3600,1.9/4500 11.6/1440, 1.9/1800
2.5/5000
I
0.38/3700
..
I
2.5/2000
.
0.95/1480. 0.51/3600 1.27li440
.'
Counterclockwise
~
Fuel-lubricant Mixture Type
I
390
at
Rated Continuous Output 380
Flywheel Magneto Type
(Contactless Magneto Type
also available.)
NGKB6HS
I
2-Cycle Engine Oil
I
I
as
viewed from
Float Type
is
I
Recoil Starter
2.2/4500
3.3/5500
P.T.O.
~~
Shaft Side Direction of Rotation
at
Rated Continuous Output
L.
Contactless Magneto Type
NGKB7HS
1
1
2.2/1800
3-3/2200
..
..
~ ~~
Speed Governor
Speed Reduction System
Reduction Chamber Oil
.Air Cleaner Semi-wet Type
Dry Weight
I
"
Dimensions
Length
Width 307
Height
..
-
-
mm
256
mm
287 mm 287
Centrifugal Flyweight Type
1/2.5 Reduction 1/2.5 Reduction
Gear Gear
SAE #30
285
mm
307
mm
.
mm
-.
-
256
mm
307
mm
287
mm
-
SAE#30.
285
307
287
mm
mm'
mrn
2.
PERFORMANCE
2-1
MAXIMUM OUTPUT
Maximum output refers
throttle valve fully open.
A
new engine cannot always deliver maximum output power because it has not been well run in.
2-2
RATED CONTINUOUS OUTPUT
The term refers to a continuous output most ideal to engine life and fuel consumption under governor con-
In
trol.
continuously used at a load level not exceeding the rated continuous output.
combining your
to
the standard power produced by a sufficiently run-in engine with the carburetor
ri/
ROBIN
engine with a load, design your driving system
so
that the engine may be
0
1
2-3 MAXIMUM TORQUE
Maximum torque refers to the driving torque of the drive shaft when the engine
at maximum output.
The term fuel consumption ratio at maximum output refers
is operation at the maximum output.
HP
w
2
P
+
and
FUEL CONSUMPTION RATIO
PERFORMANCE
MODEL ECOGD/B
to
CURVE
at
MAXIMUM OUTPUT
the fuel consumption ratio when the engine
(
1
for B type
6
I
is
driving the external load
(1
200)
--W
Revolution
-2-
(1
600)
(2000)
r.p.m.
HP
PERFORMANCE
MODEL
EC08D/B
CURVE
.
( )
for
B
type
(
1.25)
kg-m
W
(0.75)
gr/H
P-
h
(1
200)
--*
Revolution
(1
600)
(2000)
r.p.m.
-3-
3.
FEATURES
Compact, lightweight, high-powered engine with reliable operation also in the low speed range
1.
2.
Extremely simple in construction, trouble-free, and very easy
Quiet running engine using a lined aluminium cylinder
3.
4.
Equipped with T.C.I. (Transistor Circuit Ignition)
5.
So
durable that the engine can stand hours of tough work.
Needle bearings are used for the crank pins and piston bearings to enable the engine to withstand high-
speed operation under heavy load.
The carburetor works at inclinations of up to aboaut
6.
overflows from its air vent.
The recoil starter permits easy starting.
7.
Useful in a wide range of applications
8.
A
direct-coupled, reduction type engine, and other types that differ from the standard models in drive
shaft dimensions and shape are also available.
The all-speed governor operates at any engine speed.
9.
The desired rpm. can be obtained by simply moving the control lever, and it remains constant even if
the load changes.
Resistant to vibration (EC08)
IO.
Manufacturers of rammers and plates (machines
are using these ROBIN engines.
(EC06)
30"
for
compacting earth by vibration) around the world
to
use
so
that the engine can operate until the fuel
-4-
m
4.
DISASSEMBLY
4-1
PRE-PARATIONS
.Disassembly
-1)
In"disassembling, remember the location
in the right way. Attach tags to those parts which might be mistaken for others.
and
REASSEMBLY
and
SUGGESTIONS
of
each part
so
that the disassembled partsEcan be reassembled
...
..
,.
2) Carefully handle the gaskets because they can easily break.
3)
Temporarily fasten disassembled parts in their original positions to prevent them from missing and wrong
reassembly.
4)
Carefully handle disassembled parts and clean them with kerosene.
5)
Use thecorrect tools in the correct way.
6)
Items necessary for disassembly and reassembly
pan
oil
before disassembling.
7)
a. 'Work bench b. Kerosene
e.
Be sure
sandpaper,
to
discharge the'fuel and
spatula, waste cloth
I
c. Disassembly tools d. Kerosene or gasoline
1
-
1.
..
..
.Reassembly
1)
Use new packing and gaskets in reassembling the engine.
2) Clean the parts with fresh gasoline, and blow them dry with compressed air before reassembling.
3)
Apply 2-cycle oil to the rotary and sliding parts.
4)
Keep the.parts free
of
dust during reassembly.
Tighten.the bolts, nuts, and screws.with the specified torques.
5)
Each'time a set
6)
After reassembling the engine, turn
of
main parts is installed, manually'turn it and check for smoothness and noise.'
it
manually and check
for
abnormalities and looseness.
.
.
I
4-2
SPECIAL TOOLS
.
.%
"
..
..
..
Flywheel
Fig.
Pulley
1
4-3
DISASSEMBLY
4-3-
1
DISCHARGING FUEL
PROCEDURE
Discharge the fuel from the fuel tank.
4-3-9
CONTACT BREAKER, CAPACITOR,
IGNITION COIL
[Point
Type
for
EC06
(See Fig.
3A.)]
n
\/
4-3-2
FUEL TANK
1) Disconnect the pipe connecting the fuel filter to
the carburetor at the carburetor end.
2)
Remove the fuel tank from the cylinder and fan
cover.
4-3-3
STOP BUTTON CORD
Disconnect the cord from the socket terminal.
4-3-4
FAN COVER
Remove the bolts and then the fan cover together
with the stop button.
Note: The rubber baffle comes off simultaneously.
4-3-5
CYLINDER COVER
Remove the bolts and then the cylinder cover.
4-3-6
STARTER PULLEY
Remove the bolts and then the starter pulley from
the flywheel.
4-3-
7
MAGNETO and FLYWHEEL
1) Remove the screws that fasten the capacitor and
point cover together, and remove the point cover
from the crankcase.
2)
Remove the socket type terminal and mounting
screws, remove the capacitor, contact breaker,
and ignition coil from the crankcase in this order.
Note: Exercise care in removing the grommet
from the crankcase.
Ignition
Coil
Breaker
Point
Cover
Remove the nut and take the flywheel from the front
end of the crankshaft using the flywheel puller.
(See Fig.
4-3-8
2.)
Fig.
WOODRUFF KEY
2
Hold a screwdriver with its flat part on the woodruff
key, and lightly strike the screwdriver to remove the
key with a mallet.
Fig.
3A
-6-
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