Robin EY33-2 Specification

Category
Power generators
Type
Specification

This manual is also suitable for

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
Title
Page
1
.
SPECIFICATIONS
...........................................
2
.
PERFORMANCE
...........................................
2-
1
Maximum Output
.......................................
2-2
Continuous Rated Output
.................................
2-3
Maximum Torque
.......................................
3
.
FEATURES
...............................................
4
.
GENERAL DESCRIPTION
of
ENGINE CONSTRUCTION
...............
4- 1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
4-1
1
4-12
4-
13
4-14
Cylinder. Crankcase
.....................................
Main Bearing Cover
......................................
Crankshaft
...........................................
Connecting Rod and Piston
................................
Camshaft
............................................
Valve Arrangement
......................................
Cylinder Head
.........................................
Governor
............................................
Cooling
..............................................
Lubrication
...........................................
Ignition
.............................................
Carburetor
...........................................
Air Cleaner
...........................................
Sectional View
of
Engine
..................................
5
.
DISASSEMBLY
and
REASSEMBLY
...............................
5-1
Preparation and Suggestion
.................................
5-2
Special
Tools
..........................................
5-3
Haw
To
Disassemble
.....................................
5-4
How To Reassemble
.....................................
6
.
MAGNETO
...............................................
6-1
Magneto
.............................................
6-2
Breaker Point Adjustment
.................................
6-3
Timing Adjustment for
EY15. EY20
Point Type Ignition System
........
6-4
Magneto Trouble Shooting
.................................
6-5
Solid
State
Ignition
......................................
7 .
GOVERNOR ADJUSTMENT
...................................
8
.
CARBURETOR
............................................
8-
1
Operation and Construation
................................
8-2
Disassembly and Reassembly
...............................
9
.
BREAK-IN OPERATION
Of
REASSEMBLED ENGINE
................
1
3
4
4
4
5
5
6
6
7
7
8
8
8
9
9
10
18
18
18
20
27
37
37
37
38
39
39
40
42
42
43
45
Section
Title
pese
10
.
ROBIN SOLID STATE IGNITION ENGINE
(T.I.C. and P.I.T.)
............
46
10-1
Features
.............................................
46
10-2
Basic Theory of T
.
I.C.
...................................
46
10-3
Basic Theory of
P
.
I.T.
...................................
46
11
.
TROUBLE SHOOTING
.......................................
47
11
.
1
Starting Difficulties
......................................
47
11
-2
Engine Misfires
.........................................
48
1
1 -3
Engine Stops
..........................................
48
11
-4
Engine Overheats
.......................................
48
11
-6
Engine Backfires through Carburetor
..........................
49
12
.
INSTALLATION
............................................
50
12-1
Installing
.............................................
50
12-2
Ventilation
...........................................
50
12-3
Exhaust Gas Discharge
....................................
50
12-4
Power Transmission to Driven Machines
........................
50
12-5
Wiring
..............................................
51
13
.
ELECTRIC STARTING MOTOR
(Option)
..........................
53
13-
1
Specifications
.........................................
53
13-2
Operation
............................................
53
11-5
Engine Knocks
.........................................
49
14
.
RECOIL STARTER DISASSEMBLY
and
REASSEMBLY
................
54
14-1
How
To Disassemble (Type D)
..............................
54
14-2
How
To Reassemble (Type
D)
...............................
55
14-3
Check Items after Reassembly
...............................
57
14-4
How
To Do in Such
Cases!
.................................
57
15
.
CHECKS
and
CORRECTIONS
...................................
58
16
.
TABLE
of
CORRECTION STANDARDS
...........................
59
17
.
MAINTENANCE
and
STORING
.................................
17-1
Daily Checks and Maintenance
..............................
17-2
Every
20
Hours
Checks and Maintenance
.......................
17-3
Every
50
Hours Checks and Maintenance
.......................
17-4
Every
100
-
200
Hours (Monthly) Checks and Maintenance
...........
17-5
Every
500
-
600
Hours (Semiannual) Checks and Maintenance
.........
17-6
Every
1000
Hours (Yearly) Checks and Maintenance
................
17-
7
Preparation for
Long
Abeyance
..............................
65
65
65
65
65
66
66
66
.
2.
PERFORMANCE
2-1
MAXIMUM
OUTPUT
The maximum ouput of an engine is such standard power as developed by the engine, after its initial break in period
with
all
the
moving
parts properly
worn
in, when operating with a fully open throttle valve. Therefore,
a
new engine may not develop
the maximum output
in
the beginning because the moving
parts
are not
in
a
properly
worn-in
condition.
2-2
CONTINUOUS
RATED
OUTPUT
The continuous rated output of
an
engine
is
sudrpower as developed
by
that engine when
running
continuously at
an
opti-
mum
speed,
and
most favorable from the viewpoint of engine life and fuel consumption ratio,
with
the governor
in
opera-
tion. It
is
suggested, therefore, that when designing a
driving
system
for
any mechanism, with this engine
as
prime mover,
the continuous power requirement
of
that mechanism be kept below
the
continuous rated output specified.
23
MAXIMUM
TORQUE
These mean the maximum torque
of
the output shaft and fuel consumption ratio at the maximum output of an engine.
PERFORMANCE
CURVES
MODEL EY15D,
15B
(
1
for
B
type
4
Ma;.
Torque
~
0.7
-
I
I
7
0.6
HP
tii
I\ I
I
I
I
I
I
I
2000
3000
4000
(1
000)
(1
500)
(20001
r.p.m.
Revolution
kg-m
-2-
PERFORMANCE CURVES
MODEL EYZOD
5
Max.
Toraue
1
.o
4
3
HP
L.
B
22
w
r
1
2000
3000
4000
Revolution
r.p.m.
2000
(1
000)
PERFORMANCE CURVES
MODEL
EY28D,
288
I
)
for
B
tvm
3000
(
15001
Revolution
r.p.rn.
4000
I20001
3.
FEATURES
1.
Compact, lightweight, durable, powerful 4-cycle air-cooled engine embodying ingenious design techques
and
skilful
workmanship.
2.
Simple construction, smart appearance, maximum easiness of start owing to automatic decompression device
3.
Pointless
Solid
State ignition system is newly adopted
for
preventing poor igniting as option.
4.
Reliable prime mover for variety of purposes with smooth speed control by a governor under varying load conditions.
5.
Economical because fuel consumption is very low.
6.
Great ve:satility in installation through a
360"
belt extension possibihty and
a
two-side
oil
fill
and drain arrangement.
-3-
4.
GENERAL DESCRIPTION
of
ENGINE CONSTRUCTION
4-1
CYLINDER, CRANKCASE
The cylinder and crankcase are single piece aluminum die
casting. The cyhder liner, made of special cast
iron,
is built
into the alminum casting. The intake
and
exhaust
ports
are
located on one side
of
the cyhder,
and
are also inserted
into the casting.
The crankcase
is
separable on the output shaft side, where
the main bearing cover
is
attached to it.
(See Fig.
1
.)
4-2
MAIN
BEARING
COVER
Fig.
1
The main
bearing
cover made
of
aluminum die casting is built
onto
the output shaft side of the crankcase
so
that the inside
of
the engine can readily be checked by simply removing the cover. It
is
provided with a flange
and
boss
for directly mount-
ing machmes, such as generators and pumps.
Two
oil
gauges also serving as
oil
filler caps can be mounted. (See Fig.
2
and Fig.
3.)
The
EY
15B engine has
2
chain guides and a built-in shelter plate to prevent
oil
from
being
stirred
by
the governor gear
(See
Fig.
4.)
Ring
for
Centering
/
Oil
Gauge
Oil
Gauge
Fig.
2
I
Governor Gear
Fig.
3
Chain
Guide
-
Shelter
Plate
1
Fig.
4
(E
Y
15B)
-4-
4-5
CAMSHAFT
In
the
D
type, the camshaft
is
integrally built with a cam gear
of
special cast iron, and has intake and exhaust cams. Also
the camshaft has aluminum
plain
bearings attached to both ends.
(No
ball bearing is used.) (See Fig.
8.)
In
the
B
type, the camshaft is made of carbon steel, and
EYlSB
type has a pressured-fitted cam gear and a driven sproket.
(See Fig.
9.)
The camshaft functions also as an output shaft, and is driven by
1/2
rotation
of
the crankshaft,
Ball
bearings
are used
in
the output shaft side.
J
Fig.
8
4-6
VALVE ARRANGEMENT
The exhaust vahe is located upstream
of
the coolingair with
the result that the exhaust valve
is
intensiveiy cooled
for
improved engine durability. The inner side
of
the valve head
is reinforced with hard alloy fused to it for added durability.
(See Fig.
10.)
Driven Sprocket
(Pressure-Fit)
Cam
Gear
Fig.
9
(E
Y
156)
I
Exhaust Valve
Direction
of
Cooling
Wind
Fig.
70
-6-
4-7
CYLINDER
HEAD
The cylinder head
is
an aluminum die casting,
and
forms a
Ricardo type combustion.chamber with ample area for high
combustion effeciency. The spark plug
is
tilted for easy
mounting
of
the fuel tank.
(See Fig.
11.1
Fig.
1
1
4-8
GOVERNOR
The governor is a centrifugal flyweight type which permits
constant operation at the selected speed against load varia-
tions. Governor gear
is
installed on the bearing cover with-
out fail, and
it
engages with the cam gear afterreassembling.
(See
Fig.
12.)
/
Main
Bearing Cover
Governor
Sleeve
1
Governor Gear
Complete
Fig.
12
-7-
4-9
COOLING
The cooling fan serving
also
as a flywheel
cools
the cyhder and cylinder head by forced air cooling. Cylinder baffles
and
head cover are provided for guiding the coohg
air.
4-10
LUBRICATION
The
rotating and sliding parts are being lubricated by
scoop-
ing and splashing the
oil
in the crankcase with the
oil
scraper
attached
to
the connecting
rod.
(See Fjg.
13.)
Fig.
13
4-1
1
IGNITION
The ignition system is
a
flywheel magneto type with ignition timing set at
23"
before
TDC.
The magneto
is
composed
of
a
flywheel and ignition
coil.
The flywheel serving also as a fan is mounted directly
on
the crankshaft, and the ignition
coil
in
the crankcase.
(For
further detds, refer to Section on the Magneto.) (See Fig.
14
and Fig.
15.)
(BREAKER
POINT IGNTION TYPE)
(SOLID
STATE IGNITION TYPE)
Ignition
Coil
Ea\?
Fig.
14
-8-
Fig.
15
D
4-12
CARBURETOR
A
horizontal draft carburetor is employed. It
has
been care-
fully set after thorough tests to assure satisfactory start up,
acceleration, fuel consumption, output performance etc.
For construction and order details, refer to the Section on
Carburetor Construction, Disassembly
and
Reassembly.
(See
Fig.
i6.)
4-13
AIR
CLEANER
The air cleaner
of
the standard type engine is an oblong
type using a sponge element.
(A
cyclone type semi-wet
double element air cleaner is optionally available.)
m
(See
Fig.
17.)
Fig.
16
Air
Cleaner for
Standard Type Cyclone Type
(Option)
Mushroom Cyclone Type
(Option)
Fig.
17
-9-
4-14
SECTIONAL
VIEW
OF
ENGINE
4-14-1
MODEL
EY15D
Cylinder
Head
Blower
Housing
Ignition
Coil
Piston
Pin
Flywheel
(Cooling Fan)
Starting
Pulley
Recoil
Starter
Governor
MODEL
EY15D
(BREAKER POINT IGNITION TYPE)
-
10
-
Piston
Stop Button
Connecting
Rod
\
I
i
/-Speed Control Lever
Air Cleaner
'Carburetor
.Muffler
.Intake and
Exhaust Valve
Tappet
Oil
Scraper-
1
Camshaft
MODEL
EY15D
-
11
-
4-14-2
MODEL
EY15B
Cvlinder Head
Blower Housing
Ignition
Coil
Piston Pin
Flywheel
(Cooling Fan)
Starting Pulley
Recoil
Starter
--/
L
MODEL
EY15B
(SOLID STATE
IGNITION
TYPE)
Spark Plug Cap
Spark Plug
Piston Ring
Crankcase
Chain Guide
Crankshaft
Main Bearing Cover
Governor
-
12
-
Fuel
Tank
1
I
\r
Speed Control Lever
Piston
Stop Button
Connecting Rod
Oil
Scraper
Air Cleaner
Carburetor
Muff
I
er
Intake and
Exhaust Valve
Tappet
Chain
MODEL
EY15B
-
13
-
4-14-3
MODEL
EY20D
Recoil
Starter
Governor
MODEL EYPOD
(BREAKER
POINT IGNITION
TYPE)
Cover
-
14
-
Piston
Stop Button
Connecting
Rod
Oil Scraper
Camshaft
Lever
Speed Control
1
\-
Air Cleaner
Carburetor
.Muffler
Intake and
Exhaust Valve
\“Tappet
MODEL
EY20D
-
15
-
4-14-4
MODEL
EY28
Flywhe
,Spark
Plug
Cap
Spark
Plug
Piston
Ring
Crankcase
lg
Cover
MODEL
EY28
(SOLID
STATE IGNITION TYPE)
-Governor
-
16
-
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26
  • Page 27 27
  • Page 28 28
  • Page 29 29
  • Page 30 30
  • Page 31 31
  • Page 32 32
  • Page 33 33
  • Page 34 34
  • Page 35 35
  • Page 36 36
  • Page 37 37
  • Page 38 38
  • Page 39 39
  • Page 40 40
  • Page 41 41
  • Page 42 42
  • Page 43 43
  • Page 44 44
  • Page 45 45
  • Page 46 46
  • Page 47 47
  • Page 48 48
  • Page 49 49
  • Page 50 50
  • Page 51 51
  • Page 52 52
  • Page 53 53
  • Page 54 54
  • Page 55 55
  • Page 56 56
  • Page 57 57
  • Page 58 58
  • Page 59 59
  • Page 60 60
  • Page 61 61
  • Page 62 62
  • Page 63 63
  • Page 64 64
  • Page 65 65
  • Page 66 66
  • Page 67 67
  • Page 68 68
  • Page 69 69
  • Page 70 70
  • Page 71 71

Robin EY33-2 Specification

Category
Power generators
Type
Specification
This manual is also suitable for

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI