Robin EC05-2 User manual

ROBIN AMERICA, INC.
ROBIN TO WISCONSIN ROBIN
ENGINE MODEL CROSS REFERENCE LIST
ROBIN
EY08
EY15
EY15V
EY20
EY2OV
EY23
EY28
EY3
5
EY40 -
EY45V
EY2
1
EY44
EY18-3
EY25
EY27
EH11
EH12
EH15
EH17
EH21
EH25
EH30
EH30V
EH34
EH34V
EH43V
EC13V
DY23
DY27
DY30
DY3
5
DY41
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 1-43OV
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 ........................................... 1
2. PERFORMANCE ............................................ 2
2.1
. MaximumOutput ....................................... 2
2.2
. ContinuousRated Output .................................. 2
2.3 . MaximumTorque andFuelConsumptionRatio at Max . Output ........ 2
3 . FEATURES ................................................ 5
4 . GENERALDESCRIPTION of ENGINECONSTRUCTION ................ 6
4.1
.
4.2 .
4.3 .
4.4 .
. 4.5 .
4.6 .
4.7 .
4.a .
4.9 .
4-1 0 .
4-11 .
4-1 2 .
4-13 .
4.14 .
4-15 .
SectionalView of Engine .................................. 6
Crankcase
............................................. 14
Baseplate
............................................. 14
CrankshaftandConnecting
Rod Assy .......................... 14
Piston
............................................... 14
DrivingShaft (for Model B only)
............................. 15
Cylinder
.............................................. 15
Cylinder Head (Model EC10.17.2
5.2 only) ...................... 15
Governor
..............................,............... 15
Cool'ing
..............................................
15
Ignition
.............................................. 15
Carburetor
............................................
16
Air Cleaner
............................................
16
ReductionEquipment
(for Model B only) ....................... 16
StartingPulleyorRecoilStarter
.............................
16
5 . INSTALLATION .............................................
17
5.1
. Mounting .............................................
17
5.2
. Ventilation ............................................ 17
5.3
. Exhaust Gas Evacuation ................................... 17
5.4
. Fuel System ........................................... 17
5.5
. PowerTransmission to Drive Machines ......................... 17
5.6
. Wiring ............................................... 18
6 . DISASSEMBLY and REASSEMBLY. ............................... 20
6.1
. PreparationsandSuggestions ................................ 20
6.2
. Special Tools .......................................... 22
6.3
. Disassembly and ReassemblyProcedure ........................ 24

7 . MAGNETO ................................................ 29
7.1 . Magneto. ..............
; .............................. 29
7.2 . Breaker PointAdjustment
.................................. 29
7.3 . TimingAdjustment
...................................... 30
7.4 . Magneto TroubleShooting
................................. 31
8 . GOVERNOR ............................................... 32
8.1 . Construction and Operation ................................ 32
8.2 . GovernorAdjustment .................................... 34
8.3 . High Speed Adjustment ................................... 36
9 . CARBURETOR ............................................. 38
9.1 . Construction and Operation ................................ 39
9.2 . DisassemblyandReassembly ................................ 39
9.3. Adjustments ........................................... 41
10 . RUN-IN OPERATION of REASSEMBLED ENGINE .................... 42
I1 . TROUBLESHOOTING ........................................ 43
11.1 . Starting Difficulties ...................................... 43
11.2 . Slow-Speed out of order ................................... 44
11.3 . Overheatingand Knocking ................................. 44
11.4 . Power Drop ........................................... 45
11 .5 . Excessive FuelConsumption ................................ 45
11.6
. Engine Hunting ......................................... 45
11.7 . OtherComplaints ....................................... 45
12
. CHECKS and CORRECTIONS ................................... 46
13 . MAINTENANCE and STORING .................................. 53
0
13.1 . Daily ChecksandMaintenance .............................. 53
13.2 . Every 50Hours (10 Day) ChecksandMaintenance ................. 53
13.4 . Every 500-600 Hours(Semiannual) ChecksandMaintenance ......... 53
13.6 . Preparation for LongAbeyance .............................. 54
13.3 . Every 100-200 Hours (Monthly) ChecksandMaintenance ........... 53
13.5 . Every 1000 Hours (Yearly)ChecksandMaintenance ............... 54

.-
1.
SPECIFICATIONS
1
0 0
'4
c
.
f
Lo
5- 0
m
00
Lo
0
9 .
ln
T
c
a
P
a
-1-

2. PERFORMANCE
2-1 MAXIMUM OUTPUT
The maximum output of an engine is such standard power as developed by that engine, after its initial run-in period withall
the movingparts properlyworn-in,whenoperatingwith thefullyopenthrottle valve. Therefore,itfollowsthata new
engine may notdevelopthismaximum output in the beginning,becausemovingpartsarenot inaproperlyworn-in
condition.
2-2 CONTINUOUSRATEDOUTPUT
Thecontinuous rated output of anengine is suchpower asdevelopedby that enginewhenrunning at an optimum speed
most favorable from the point
of viewof engine life and fuel consumption ratio. Therefore, it follows that when designing a
driving system for anymechanism, with a model EC05-2,07-2, IO, 17 or 25-2 engine, as a prime mover, the continuous pow-
errequirement
of that mechanism must be kept below the continuous rated outputspecified.
2-3 MAXIMUMTORQUE and FUELCONSUMPTIONRATIOATMAX.OUTPUT
The maximum torque of an engine is that driving torque of the driving shaft at which the engine is driving an external load,
while the engine is developing its max. output. The fuel consumption ratio at max. output is that fuel consumption ratio
of
an engine while that engine is running at the max. output.
PERFORMANCE CURVE
MODEL EC05-2D
I for B tvoe
HP
2500 3000 3500' 4000 4500 5000 5500
(910) (1090) (1270) (1460)(1640) (1820) (2000)
0.4 (1.09)
0.3 (0.82) t
-2-

PERFORMANCECURVE
MODEL EC07-2D
( ) for B type
HP
t
4
3
HP
t 2
1
0
PERFORMANCE CURVE
MODELECIOD
( )for B tj
(1000)(1200)(1400)(1600) (1800) (2000)
- rpm
-3-

HP
HP
t
PERFORMANCECURVE
kg-m
PERFORMANCECURVE
MODEL EC25-2DS
kg-m
-4 -
__c rpm

3.
5.
4.
5.
6.
*- .
7.
8.
9.
FEATURES
COMPACT, LIGHT WEIGHT, HIGH PERFORMANCE and LOW FUELCONSUMPTION.
TROUBLE FREE
because of simpledesign and easy to handle.
HIGH DURABILITY engine withstand long severe operation.
TILTED OPERATION available.
As a special feature of 2-cycle engine, can operate at up to about 30' tilted position just before the fuel flooding out
from the air-bent
of carburetor.
EASY STARTING
Recoil type starter is available at option.
LIGHTING for night operation.
Optional lightingis available by installing special lighting coil.
Lighting Capacity: EC05-2,07-2 (1 2V - 16V, 6W)
..
EC10,17(6 - 8V, 15W)
EC25-2 (1'2V,
18 - 25W)
VERSATILE APPLICATION
Direct,or reduction type engine with horizontal shaft orvertical shaft are available.
Wide selection
of driving shaft size and shapes are also available beside standard specification.
Further,consultwith dealer for smallerfuel tank,heavy-dutyfilterelementfor air cleanerandhigh-performance
muffler.
The engine can control
to the desired speed with a ALL-SPEED GOVERNOR.
It can. be set for any desired speed by simply moving the controllever. The setting speed is maintained even under vary-
ing load. -
Engine withstand AGAINST HIGH VIBRATION environment.

4. GENERALDESCRIPTION of ENGINECONSTRUCTION
4-1 SECTIONAL VIEW of ENGINE
FUEL TANK CAP
\
MUFFLERCOVER 7
\I
MUFFLER
GOVERNOR
CONTROLLEVER
MODEL EC05-2,07-2
-6-