Robin America EH34 Spezifikationen

4-14 SECTIONAL VIEW of ENGINE 4-14-1 MODEL EY14 FI Blower ywheel (Cooling Housing Starting Pulley- MODEL EY14 ver -6-

Fuel Tank MODEL EY14 -7 -

4-14-2 MODEL EY18-3 Cover MODEL EY18-3 -a-

/- Tank / MODEL EY18-3 -9-

4-14-3 MODEL EY23 Flywheel Star MODEL EY23 7g Cover - 10 -

/" Tank Con Cam Shaft MODEL EY23 - 11 -

4-14-4 MODEL EY25-2 and EY27-2 MODEL EY25-2 and EY27-2 Cover - 12 -

I ti I I \Cam Shaft MODEL EY25-2 and EY27-2 - 13 -

5. INSTALLATION The life, ease of maintenance, frequency of check and repair, and operating cost are greatly affected by the way the engine is

5-5-2 FLEXIBLE COUPLING When a flexible coupling is used, the runout and mis-alignment between the driven shaft and the engine driving shaft m

ROBIN AMERICA, mc. ROBIN TO WISCONSIN ROBIN ENGINE MODEL CROSS REFERENCE LIST ROBIN WISCONSIN ROBIN - EY08 EYl5 EY 15V EY20 EY2OV EY23 EY28 EY35 EY40

2) Electronic ignition system MODEL EY14: CDI (Capacitor Discharge Ignition) system Stop Button BlackMlhite Pulser Coil """.J Optiona

MODEL EY23: TIC with Lamp Coil System Stop Button Ignition Coil Spark Plug 77!7 Lamp Coil / Flywheel Fig. 5-64 MODEL EY25-2, EY27-2: PIT (Pulser Ig

. 5-6-2 CELL START The wiring is as shown in the figure below. The section, in the figure, described with dotted ,~ lines is normally n

MODEL EY23, EY25-2, EY27-2: PIT with Cell System Spark plug - Flywheel i Magnetic Switch Starting Motor F&. 5-6-7 -19-

1) Specifications Parts No. Name Manufacturer Voltage Output Weight 2147050110 (Model EY18-3BS, 23BS, 2147050210 (Model EY23DS, 25-2DS, Starting Mot

6. DISASSEMBLY and REASSEMBLY 6-1 PREPARATION and SUGGESTIONS 0 1) When disassembling the engine, memorize the locations of individual parts so as t

Description Part No. QtY Remarks 1 Flywheel Puller EY14, EY18-3, EY23, EY25-2, EY27-2 1 2079500307 Valve Spring Compressor 3 001 6608500 Bolt 1 2

2) 0 3) 4) 5) Remove flywheel from crankshaft. Apply a socket wrench over the flywheel nut and give the wrench a sharp blow with a soft ha

Replace valves if the valve face is pitted or warped. Correct the valve seat by using 4S0 seat cutter tool as illustrated in Fig. 6-3-3. The fini

4) Tappet Adjustment (See Fig. 6-3-6) With tappet in its lowest position, hole valve down and insert feeler gauge between valve and tappe

CONTENTS Section Title Page ... 1 . SPECIFICATIONS 1 2 . PERFORMANCE ...

Adjusting Collar Fig. 6-3-8 Fig. 6-3-9 * Correct fastening torque for main bearing cover mounting screws is: EY 14 80 %lo0 kg-cm (5.7% 7.2

6-3-11 CONNECTING ROD and PISTON 1) Straighten out the bent tabs of rod lock washer and remove bolts from connecting rod. 2) Take off oil scrap

The correct connecting rod cap fastening torque values are as follows: EY 14 90 % 115 kg-cm (6.5 % 8.3 ft-lb) EY 23 EY18-3 170 % 200 kg-cm (12.3 %

7. MAGNETO 7-1 MAGNETO The spark for ignition is furnished by a magneto in models EY14, EY18-3, EY23, EY25-2 and EY27-2. In these models,

7-3 TIMING ADJUSTMENT With the Model EY14, EY18-3, EY25-2 and EY27-2 engines, the spark is timed to occur 23O before the piston reaches TDC on th

7-4 MAGNETO TROUBLE SHOOTING When the engine does not start or starts with difficulty, or when its operation is unstable, the following tests wiU

8. GOVERNOR ADJUSTMENT In the model EY 14, EY 18-3, EY23, EY25-2 and EY27-2 engines, a centrifugal flyweight type 1’1 governor is used. The flyw

9. CARBURETOR 9-1 OPERATION and CONSTRUCTION (See Figs. 9-1-1 and 9-1-2) 9-1-1 FLOAT SYSTEM The float chamber located directly beneath the main

9-1-2 PILOT SYSTEM The pilot system supplies fuel to the engine during idle and low speed operation. The fuel taken through the main jet is me

9-2-4 MAIN SYSTEM 1) Remove main jet holder (9) and dismount 2) Remove main jet (8) from main jet holder '3) Remove main nozzle (2) from

7.MAGNETO ... 29 7-1 Magneto ... 29 7-2 Breaker Point Adjustm

9-3 ADJUSTMENTS 1) Pilot screw is adjusted by'back screwing (counter-clockwise) after closing it fully once. EY14 ... 1 tu

10. RUN-IN OPERATION of REASSEMBLED ENGINE An overhauled engine must be carefully run-in to get proper surface condition on newly installed

11. TROUBLE SHOOTING For a satisfactory starting and running conditions of a gasoling engine, the following three requirements must be met: 1

11-1-3 ELECTRIC SYSTEM When there is no spark, the following must be checked. 1) Disconnected cable leading to ignition coil, spark plug or cont

7) Engine operated in closed space without fresh supply of cooling air. 8) Restricked exhaust gas outlet. 9) Engine detonating due to low octane g

12. CHECKS and CORRECTIONS After'dismantling and cleaning the engine parts, check them, and if necessary, correct them, according to the

13. CORRECTION TABLE 7 CORRECTION METHOD t ITEM Flatness of cylinder head ENGINE MODEL CORRECT1 STANDARD TOLERANCE SIZE N LIMIT USE "IT REMARKS

TOOL L,MIT REMARKS USE I CORRECTION METHOD I EY14 I Top EY25-2 2nd Clearance between EY27-2 Oil 0.050L-0.095L 0.040 L- 0.085 L 0.01OL-0.055L Feel

ENGINE STANDARD CORRECTION ITEM 1 MODEL 1 SIZE USE TOLERANCE I LIMIT LIMIT ? EMAR KS I METHOO CORRECTION zi 0.15 0.15 EY27-2 EY -1 4 24 dia. -0.05

ENGINE MODEL I CORRECTION REMARKS TOOL CORRECTION METHOD STANDARD SIZE LIMIT USE ITEM TOLERANCE 0.10L-0.14L 0.16L-0.2OL LIMIT below above 0.0: 0.25 E

1. SPEC1 FICATIONS [ N m p 52 0 n 0" V t 1 c t I I i -1 -

ITEM REMARKS CORRECTION LIMIT HPIrpm MODEL EY14D 3.5l4.000 EY183D 5.0/4,000 Max. Output Below 110% of rated output 6.014,OOO EY23D EY25-2D 7.014,000

I ITEM I MODEL I kg/ud/rpm I CORRECTION LIMIT I TOOL EY 14 4.61420 EY 18-3 5.91360 Cylinder Pressure EY23 6.7 1380 70% of normal value EY25-2

14. MAINTENANCE and STORING The following maintenance jobs apply when the engine is operated correctly under normal conditions. The indica

14-5 EVERY 500 -600 HOURS (SEMIANUAL) CHECKS and MAINTENANCE Checks and maintenance Reasons for requiring them Remove cylinder head and remove

Industrial Engines

2. PERFORMANCE 2-1 MAXIMUM OUTPUT n The Maximum output of an engine is such standard power as developed by that engine, after its initial run

PERFORMANCE CURVE MODEL EY23 7 ( ) for B type 1.5(3.0) 1.0 (2.0) 6 I 5 kg-m HP I4 3 I g1HP.h 3 50 2 300 250 2000 3000 4000 (1 000) (1 500) (2000) rpm

FEATURES A compact, lightweight and durable 4-cycle air-cooled engine with high power output, embodying ingenious design technique and

4-6 VALVE ARRANGEMENT The exhaust valve is positioned in the upstream side of the cooling air with the result that the exhaust valve is intensi