Robin EC06 User manual

SERVICE
MANUAL
Models
EC06,EC08
1193s1 20

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
RatedContinuous Output .................................. ; . 2
2-3
MaximumTorque and FuelConsumption Ratio at MaximumOutput ........ 2
3 . FEATURES .................................................... 4
4 . DISASSEMBLY and REASSEMBLY .................................. 5
4-
1 PreparationsandSuggestions .................................. 5
4-2
Special Tools ............................................. 5
4-3
. DisassemblyProcedure ...................................... 6
4-4 ReassemblyProcedure ....................................... 9
5 . CONTACTBREAKERADJUSTINGPROCEDURE(EC06) .................. 13
6 . CARBURETORADJUSTMENT ..................................... 14
7 . GOVERNORADJUSTMENT ....................................... 15
8 . TROUBLE-SHOOTING ........................................... 16
8-1
StartingTrouble ........................................... 16
8-2
IdlingImproper ........................................... 19
8-3
OverheatingandEngine Knocking ............................... 19
8-4
Power Drop : ............................................. 19
8-5
Excessive FuelConsumption ................................... 20
8-6 Hunt.ing ................................................ 20
8-7 OtherTroubles .............................................. 20
9 . CHECKSand CORRECTIONS ...................................... 21
9- 1 EngineStandard CorrectionTable ............................... 22
9-2 Table of TighteningTorque ................................... 24
10 . MAINTENANCEand STORING ..................................... 25
10- 1 Daily ChecksandMaintenance .................................. 25
10-2
Every 50 HoursChecksandMaintenance : ......................... 25
10-3
Every 150 HoursChecksandMaintenance .......................... 25
10-4
Yearly ChecksandMaintenance ................................ 25
10-5
Preparationfor LongAbeyance ................................. 25

Fuel Tank Cap
Recoil Starter
ECOGD
n
Spark Plug
Muffler Cover
overnorLever
Engine
Base (optional)
Governor Chamber
(Engine base
is opti onal.)
ECOGB

Model ECOGD ECOGB ECOID ECO~B
Air-Cooled, 2-Cycle, Vertical, PistonValve Type, Single Cylinder Gasoline Engine
Bore
x Stroke 44mmx40mm I I. 50 mm x 40 mm
PistonDisplacement .60.8 cc78.5cc
ContinuousRatedOutput (HP/rpm) 1.6/3600,1.9/4500 11.6/1440,1.9/1800
I 2.2/4500 1 2.2/1800
MaximumOutput (HP/rpm) 2.5/5000
.. I 2.5/2000 I 3.3/5500 1 3-3/2200
~~
MaximumTorque (kg-m/rpm)
I 0.38/3700 . 0.95/1480. 0.51/3600 1.27li440
.' Counterclockwise as viewedfrom P.T.O. ShaftSideDirection of Rotation .
Lubrication
~
Fuel-lubricantMixtureType
~~
~~
Lubricant
I 2-Cycle EngineOil
Carburetor'
I .
_-
Fuel Gasoline-lubricantMixture (20- 25: 1)
..
FloatType ..
Fuel ConsumptionRatio(gr/HP-h) 390
at RatedContinuous Output380 at RatedContinuous Output
Fuel Feed Gravity Type
FuelTank Capacity1.5 iitres
~ ~~~
L.
IgnitionSystem
~ ~~
Contactless MagnetoType
FlywheelMagneto Type
(Contactless Magneto Type is
also available.)
Spark Plug NGKB6HS
I NGKB7HS
'StartingSystem
.-
I RecoilStarter
Speed Governor CentrifugalFlyweightType
Speed ReductionSystem
- 1/2.5 Reduction 1/2.5 Reduction
-.
Gear Gear
ReductionChamber Oil
.. - SAE#30 - - SAE#30.
.AirCleaner Semi-wetType
Dry Weight
I
Length 256
mm
285 mm 256 mm 285 mm
Width 307 mm
307 mm .
307 mm
307 mm'
Height 287 mm 287
mm
287 mm 287 mrn
"
Dimensions

2. PERFORMANCE
2-1 MAXIMUM OUTPUT 0
1
Maximum output refers to the standard power produced by a sufficiently run-in engine with the carburetor
throttle valve fully open.
A new engine cannotalways deliver maximum output power because it has not been well run in.
2-2 RATEDCONTINUOUSOUTPUT
ri/
The term refers to a continuous output most ideal toengine life and fuel consumption under governorcon-
trol.
In combining your ROBIN engine with aload, design your driving system so that the engine may be
continuously used at a load level not exceeding the rated continuous output.
2-3 MAXIMUMTORQUE and FUELCONSUMPTION RATIO at MAXIMUM OUTPUT
Maximum torque refers to thedriving torque of the drive shaft when the engine is driving the external load
at maximum output.
The term fuel consumption ratio at maximum output refers
to the fuel consumption ratio when the engine
is operation at the maximum output.
HP
I
w
2
P
6
+
PERFORMANCE CURVE
MODEL ECOGD/B
( 1 for B type
(1 200) (1 600) (2000)
--W r.p.m.
Revolution
-2-

HP
PERFORMANCE CURVE .
MODEL EC08D/B
( ) for B type
kg-m
( 1.25)
W
(0.75)
gr/H P- h
(1 200) (1 600) (2000)
--* r.p.m.
Revolution
-3-

3. FEATURES
1.
2.
3.
4.
5.
6.
7.
8.
9.
IO.
Compact, lightweight, high-powered enginewith reliable operation alsoin the low speed range
Extremely simple inconstruction, trouble-free, and veryeasy
to use
Quiet running engine using a lined aluminium cylinder
(EC06)
Equipped withT.C.I. (Transistor Circuit Ignition)
So durable that theengine canstand hoursof tough work.
Needle bearings are used for the crank pins and piston bearings toenable theengine to withstand high-
speed operation underheavy load.
The carburetor works at inclinations of up to aboaut
30" so that the engine can operate until the fuel
overflows fromits air vent.
The recoil starter permitseasy starting.
Useful in a wide rangeof applications
A direct-coupled, reduction type engine, and other types that differ from the standard models in drive
shaft dimensions and shape arealso available.
The all-speed governor operates at any engine speed.
The desiredrpm. can be obtained by simply moving the control lever, and it remains constant evenif
the load changes.
Resistant to vibration (EC08)
Manufacturers of rammers and plates (machines
for compacting earth by vibration) around the world
are using theseROBIN engines.
-4-

4. DISASSEMBLY and REASSEMBLY
4-1 PRE-PARATIONS and SUGGESTIONS
.Disassembly
-1) In"disassembling,remember thelocation of eachpart so that the disassembledpartsEcanbe reassembled . I
2) Carefully handle the gaskets because they can easily break.
3) Temporarily fasten disassembled parts in their original positionsto prevent them from missing and wrong
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 ..
...
in theright way. Attachtags tothose partswhich might be mistaken for others.
..
,.
reassembly.
a.'Work benchb. Kerosene
pan I c.Disassemblytools d. Kerosene or gasoline
e.
sandpaper, spatula,wastecloth 1 -
1.
7) Be sure to discharge the'fuel and oil before disassembling.
..
.Reassembly
1) Use new packing and gaskets in reassemblingthe engine.
2) Clean the parts withfresh gasoline,and blow them dry withcompressed air before reassembling.
3) Apply 2-cycle oil to the rotary andsliding parts.
4) Keep the.parts free of dust during reassembly.
5) Each'time a set of main parts is installed, manually'turnit and check for smoothness andnoise.'
6) After reassemblingthe engine, turn it manually and check for abnormalities and looseness. .
Tighten.the bolts, nuts, andscrews.with the specified torques.
m
4-2 SPECIALTOOLS
..
. .%
" .. Flywheel Pulley
Fig. 1
..

4-3 DISASSEMBLY PROCEDURE
4-3- 1 DISCHARGINGFUEL
Discharge the fuel from thefuel tank.
4-3-2 FUEL TANK
1) Disconnect the pipe connecting the fuel filter to
2) Removethe fuel tank from the cylinder and fan
the carburetor at the carburetor end.
cover.
4-3-3 STOP BUTTON CORD
Disconnect the cord from the socketterminal.
4-3-4 FAN COVER
Remove thebolts andthenthe fancover together
with the stop button.
Note: The rubber baffle comes off simultaneously.
4-3-5 CYLINDERCOVER
Remove the bolts and then the cylindercover.
4-3-6 STARTER PULLEY
Remove theboltsandthenthestarter pulley from
the flywheel.
4-3- 7 MAGNETO and FLYWHEEL
Remove the nut and take theflywheelfrom the front
end of the crankshaftusing the flywheel puller.
(See Fig.
2.)
Fig. 2
4-3-8 WOODRUFF KEY
4-3-9 CONTACT BREAKER,CAPACITOR,
IGNITION COIL
[Point
Type for EC06 (SeeFig. 3A.)] \/
n
1) Remove the screws that fasten the capacitor and
point cover together, and remove the point cover
from the crankcase.
2) Remove thesocket typeterminal andmounting
screws,remove thecapacitor,contactbreaker,
andignition coilfrom thecrankcase in thisorder.
Note: Exercisecareinremovingthe grommet
from the crankcase.
Ignition Coil
Breaker
Point Cover
Fig. 3A
Hold a screwdriver withits flat part on the woodruff
key, and lightly strike the screwdriver to remove the
key with a mallet.
-6-