1. Manuals
  2. Brands
  3. Robin Manuals
  4. Engine
  5. EC05-2
  6. Service manual

Robin EC05-2 Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Advertisement

Table of Contents
loading

Related Manuals for Robin EC05-2

Summary of Contents for Robin EC05-2

  • Page 2 ROBIN AMERICA, INC. ROBIN TO WISCONSIN ROBIN ENGINE MODEL CROSS REFERENCE LIST ROBIN ROBIN WISCONSIN SIDE VALVE W 1-080 EY08 W1-145 EY15 W1-145V EY 15V W1-185 EY20 W1-185V EY2OV W1-230 EY23 W 1-280 EY28 1-340 W 1-390 EY40 Wl-45OV EY45V EY21W EY44W EY44...

  • Page 3: Table Of Contents

    CONTENTS Page Section Title ......... . . SPECIFICATIONS .
  • Page 4 ..........MAGNETO .

  • Page 6: Performance

    Therefore, it follows that when designing a or 25-2 driving system any mechanism, with a model EC05-2,07-2, IO, engine, as a prime mover, the continuous pow- er requirement of that mechanism must be kept below the continuous rated output specified.
  • Page 7 PERFORMANCE CURVE MODEL EC07-2D for B type PERFORMANCE CURVE MODEL ECIOD ) f o r B (1000) (1200) (1400) (1600) (1800) (2000) - 3 -...
  • Page 8 PERFORMANCE CURVE kg-m PERFORMANCE CURVE MODEL EC25-2DS kg-m...

  • Page 9: Features

    EASY STARTING Recoil type starter is available at option. LIGHTING for night operation. Optional lighting is available by installing special lighting coil. Lighting Capacity: EC05-2,07-2 ( 1 2V 16V, EC10, 17 (6 15W) EC25-2 (1'2V, 18...

  • Page 10: General Description Of Engine Construction

    GENERAL DESCRIPTION of ENGINE CONSTRUCTION 4-1 SECTIONAL VIEW of ENGINE FUEL TANK CAP MUFFLER COVER MUFFLER GOVERNOR CONTROL LEVER MODEL EC05-2,07-2 - 6 -...
  • Page 11 FUEL TANK PISTON PIN BLOWER HOUSING FLYWHEEL STARTING PULLEY NlTlON COIL MODEL'EC05-2.07-2...
  • Page 12 FUEL TANK CAP FUEL TANK CYLINDER MUFFLER COVER- CLEANER ETOR GOVERNOR ARM MODEL ECIO - 8 -...
  • Page 14 FUELTANK CYLINDE CYLINDER :LEANER MUFFLER MODEL EC17 - 1 0 -...
  • Page 15 MODEL EC17...
  • Page 16 MUFFLER- MODEL EC25-2...
  • Page 17 FUEL TANK SPARK PLUG CYLINDER H E A D 7 .BLOWER HOUSING -COOLING FAN IGNITION COIL .STARTING PULLEY P. T ,FLYWHEEL -CRANKSHAFT MODEL EC25-2 - 1 3 -...

  • Page 18: Crankcase

    (for Model D) or reduction cover (for Model B) depending upon the model as per the following table, Model Front Crankcase Crankcase Cover Rear Crankcase Reduction Cover EC05-2 for D type Exclusive for B Exclusive for Exclusive for D EC07-2...

  • Page 19: Driving Shaft (For Model B Only)

    4-9 GOVERNOR The centrifugal flyweight type governor assures constantspeed operation at selected speed, irrespective of load fluctuations. (The governor is built-in the crankcase for Model EC05-2,07-2) As to the detail, refer to section “8. GOVERNOR”. 4-10 COOLING The cooling fan which also serves as a flywheel forcily feeds cooling air to the cylinder and cylinder head with the aid blower housing and air buffle.

  • Page 20: Carburetor

    With the Model B engine, rear crankcase and reduction cover forms the reduction chamber, and the revolution of crankshaft reduced t o 1/2.7 for Model EC05-2, 07-2, to 1/25 for Model EClO and EC17 by reduction-gear and pinion, and then its P.T.O.

  • Page 21: Installation

    INSTALLATION Since the installation method affects the service life, easy of maintenance, frequency of check and repair, and operating cost of engine, the following contents shall be carefully examined before installing your engine. 5-1 MOUNTING When installing the engine, its mounting position, coupling condition with operating machines, and anchoring or supporting m&o&...

  • Page 22: Wiring

    Mount the driving pulley as close to the engine as possible. Span the driving belt horizontally, if possible. p " When starting the engine, disconnect the load. If a clutch is not available, a tension pulley or other means must be employed. 5-5-2 FLEXIBLE COUPLING When a flexible coupling is used, the run out and mis-alignment between the driven shaft and the engine shaft must be made...
  • Page 23 5-6-2 ENGINE with STARTING MOTOR EC25-2DS only) (for START BWTTON R ECTl F I ER YELLOW^ PINK BATTERY MAGNETO LIGHT BLUE WITH BLACK TUBE SPARK PLUG...

  • Page 24: Disassembly And Reassembly

    and REASSEMBLY DISASSEMBLY 6-1 PREPARATIONS and SUGGESTIONS 6-1-1 DISASSEMBLY When disassembling the engine, memorize where and how each part is assembled order to be able to reassemble it correctly. Tag parts if there is a possibility of confusion. Take care not t o damage packings and gaskets, which are fragile. In order to prevent missing and misplacing, group related parts together, tentatively assembling them, immedi- ately after disassembled each sub-assemb!y.
  • Page 25 6-1-4 REASSEMBLY Before reassembly, wash parts in gasoline.and blow them with compressed'air. 2) Apply mobile oil on the rotating and sliding surface. 3) Take care not t o contaminate the parts with dust during reassembly. Be sure t o assemble those parts provided with alignment marks by bringing the marks alignment.

  • Page 26: Special Tools

    SPECIAL TOOLS reference, the following'shows special tools of Engine for Disassembly, Meauring and Inspection instruments. For your Robin Applicable Part Tool U S e Shape Model EY10,13,14 EYl8,25,27 Flywheel Puller For pulling off EY33,44 2099500407 (with bolt) Flywheel EC05,07,10 17,37 EY10,13,14 For mounting and EY18,25,27...
  • Page 27 Applicable Tool' Part No. Model EY10,13,14 EY18,25,27 For checking C. D. Unit EY33,44,21 214 91301 D. 1. Unit Checker EY80 EC03,04 EC05,07 For checking C. 1. Unit 1067990100 T.C. Unit Checker EC10,17 EYlO, 13,14 18,25,27 EY33,44,21 .For adjusting Timing Tester EY80 "20248 Timing...

  • Page 28: Disassembly And Reassembly Procedure

    6-3 DISASSEMBLY REASSEMBLY PROCEDURE 6-3-3 FUEL TANK and FUEL TANK BRACKET ’ 1) Disconnect fuel pipe between strainer and carburetor at carburetor side. Remove mounting bolts, and detach fuel tank from cylinder head or cylinder. For Model ECl OV ’ Unscrew bolts, then remove fuel tank from blower housing.
  • Page 29 6-3-7 RECOIL STARTER Standard configuration on Model EClOV, 17V. Optional equipment for other models. Remove recoil starter from blower housing b y unscrew bolts bolts for Model EC17) 2) Remove starting pulley from flywheel by loosing bolts clamped. NOTE: Unless it is necessary, do not disassemble recoil starter special tools are required reassembly.
  • Page 30 PREVENT FROM THE ROTATION OF RINGS WHILE OPERATING THE ENGINE.) (Fig. 6-3-3) ASSEMBLE RINGS IN THE ORDER OF 2ND RING AND IST RING. 1ST RING CHROMIUM PLATED SURFACE 2ND RING- PERKARIZED SURFACE (2ND RING FOR MODEL EC25-2 CHROMIUM PLATED SUR- FACE.) (RING FOR MODELS EC05-2,07-2 IS NOT CHROMIUM PLATED.)
  • Page 31 Fig. 6-3-4) 1) Discharge oil by opening oil drain plug. (No discharg- ing the o i l is required for Model and 07-2) EC05-2 from Remove bolt and washer crankshaft end. Remove bolts o n crankcase. Detach cover gasket. In reassembly: 1) Replace cover gasket t o new one.
  • Page 32 Clean the joint of both crankcases and apply seal end. Assemble the crankshaft and joint both crankcases with press (or tap them with soft hammer) having extra care not to damage the oil seal. Fastening torque is:- EClO 90-100 kg-cm (6.5-7.0 ft-lbs) EC05-2 90-100 kg-cm (6.5-7.0 ft-lbs) EC17 90-100 kg-cm (6.5-7.0 ft-lbs) EC07-2 90-100 kg-cm (6.5-7.0 ft-lbs)

  • Page 33: Magneto

    7 . MAGNETO ". MAGNETO The spark for ignition is furnished by a magneto assembly. The magneto consists of a flywheel, ignition coil and breaker assembly .(.including condenser), which flywheel is 'mounted on. crankshaft and ignition coil and breaker assembly are mounted in crankcase directly.

  • Page 34: Timing Adjustment

    With the Model EC05-2,07:2, 10, 17 and 25-2 engines, the spark is timed t o occur 18" 23" before the position reaches TDC on This 23" is the compression stroke. spark advance of 18" controlled the breaker point opening and this ad- vance is obtained when the breaker point opening is adjusted according to the BREAKER POINT ADJUSTMENT to its proper point opening.

  • Page 35: Magneto Trouble Shooting

    7-3-3 FOR TIMING ADJUSTMENT, THE FOLLOWING PROCEDURES USING A TIMING,TESTER: Disconnect the stop button lead wires and the coil primary wire. Remove blower housing from engine. Connect the timing tester lead with red rubber cap t o the coil primary wire and ground the lead with black rubber cap t o crankcase.

  • Page 36: Governor

    8-1 CONSTRUCTION and OPERATION In the model EC05-2, 07-2, 10, 17 and 25-2 engines, a centrifugal flyweight type governor is used. The governor plate com- plete, governor sleeve and governor arm are installed in the governor chamber (EClOD, lev, 17D and 25-2D),...
  • Page 37 \-SPACER \ “ S E T GOVERNOR SLEEVE Fig. 8-1-2 Model ECIO, 17,25-2 - 3 3 - ’...

  • Page 38: Governor Adjustment

    GOVERNOR ADJUSTMENT The governor linkage should be adjusted, after reassemble it according to the following procedures. Connect governor rod and rod spring to carburetor throttle lever and governor lever, then install these t o governor shaft. NOTE: Never tighten adjusting plate set screw at this time, and do not fixed adjusting plate, governor lever and governor shaft 2) Connect governor lever and control lever with governor spring, and install control lever o n crankcase.
  • Page 39 8-2-2 CASE MODELS EC05-2, EC07-2 (See Figs. 8-2-4 and 8-2-5.) As shown by arrow mark on Fig. 8-2- 5 turn control lever t o high speed side (counter-clockwise) until stop fully, and fasten the control lever by tightening wing nut.

  • Page 40: High Speed Adjustment

    2) By turning control lever with governer spring on it, increase gradually the engine speed up t o specified engine speed. Then follow the below: In case of models EC05-2,07-2 and 25-2, locate high speed stopper bolt on the control lever and lock it so that it will work stopper of control lever against the stopper plate.
  • Page 41 GOVERNOR SPRING ADJUSTING SCREW (THROTTLE WIRE) Fig. 8-3-2 Model EClO, 17 SPRING...

  • Page 42: Carburetor

    9. CARBURETOR PILOT SCREW PILOT AIR JET PILOT OUTLET BANJO BOLT STRAINER CHOKE LEVER NEEDLE VALVE BLEED AIR JET CHOKE VALVE THROTTLE VALVE PILOT JET BASIC FUEL LEVEL MAIN AIR JET MAIN NOZZLE MAIN JET “ “ “ “ C FUEL FUEL DRAIN PLUG - I Fig-...

  • Page 43: Construction And Operation

    9-1 CONSTRUCTION OPERATION 9-1-1 FLOAT SYSTEM The float chamber is located just below carburetor main body and serves to maintain the fuel level at a constant height by a joint action of float (F) and needle valve (NV) incorporated. The fuel flows from the fuel tank into float chamber via needle valve, which is kept open while the fuel level is low, but closed when the fuel level reaches a predetermined level causing the float t o move up.
  • Page 44 25."-3& Fig. 9-2-1 THROTTLE SYSTEM Remove guide screw (22), Philips-screw (171, remove throttle valve (16), and then pull out throttle shaft (1 5 ) . CAUTION: TAKE CARE NOT TO DAMAGE'ENDS OF THROTTLE VALVE. (24) by unscrewing throttle stop screw (23). Remove spring 9-2-2 CHOKE SYSTEM 1) Take out Philips-screw (20), remove choke valve (1 9), pull out choke shaft (18).

  • Page 45: Adjustments

    *The idling speed of engine is adjusted in the following sequence. Specified idling speed: ......EC05-2. 1300 r.p.m. EC25-2. 1500r.p.m.

  • Page 46: Run-In Operation Of Reassembled Engine

    Especially when cylinder, piston o r piston rings are replaced, a thorough run-in operation is indispensable. The recommended run-in schedule is as follows: LOAD SPEED TIME EC05-2 EC17 EClO EC07-2 EC25-2 No load 2,000 rprn 10 rnin.

  • Page 47: Trouble Shooting

    11. TROUBLE SHOOTING For a gasoline engine to start and run satisfactorily, the following three reyuirements must be met: The cylinder filled with a proper fuel-air mixture. An appropriate compression in the cylinder. Good spark at correct time ignite the mixture. If all the three requirements are met simultaneously, an engine can not be started.

  • Page 48: Slow-Speed Out Of Order

    11-3 OVERHEATING and KNOCKING 1) If the ignition timing is too far advanced, correct it..Model EC05-2,07-2,25-2 23" ....Model EClO 18"...

  • Page 49: 1 . 4 . Power Drop

    114 POWER DROP 1) If the cylinder, piston or piston rings are worn, replace them or re-finish the cylinder by boring and fit oversize piston and piston rings. Replace or clean sticking piston rings. NOTE: No oversize for EC052, 07-2. If the carburetor is out of order, re-adjust or clean it.

  • Page 50: Checks And Corrections

    CHECKS CORRECTIONS After disassembling and cleaning the engine parts, check them, and if necessary, correct them according to the correction table. The correction table applies whenever engines are repaired. Its contents should be thoroughly understood by those who undertake the repairing. Its specifications must be abided by to effect correct maintenance.
  • Page 51 CORRECTION TABLE ENGINE :ORRECTlOh ITEM REMARKS TOOL MODEL LIMIT METHOD LIMIT ~~~~ EC05-2 EC07-2 Flatness of cylinder head Surface EC10 Correct plate, EC17 Feeler EC25-2 O e l EC05-2 40.01 0.1 5 EC07-2 S.T.D. EC10 50.259 Bore 4-0.02 EC17 0.1 5 0.65...
  • Page 52 2ORRECTIOF ITEM REMARKS TOOL LIMIT METHOD EC05-2 0.05-0.09 EC07-2 Clearance between -eeler piston ring and Replace 0.15 a w e piston groove EC17 0.05-0.1 EC25-2 EC05-2 0.08-0.04 Max. cylinder 3ylinder 1 - 1 Clearance between 0.1 1-0.07 3ia. and max.
  • Page 53 ENGINE CORRECTION :ORRECTION I T E M REMARKS TOOL SIZE ( M O D E L METHOD M . 0 1 8 EC05-2 EC07-2 M.011 EC10 3ylinder- Small end I.D. a.020 4.0.020 Replace l a u w : m 8 EC17 -0.005...
  • Page 54 CORRECTION US E iNGlNE STANDARD :ORRECTION I T E M TOOL REMARKS L I M I T MODEL METHOD EC05-2 0.1-0.84 Measure EC07-2 Thrust clearance between between crankshaft Replace EClO bearing & crankcase 0.1-0.6 EC17 & crankshaft EC25-2 Supporting EC05-2...
  • Page 55 REMARKS CORRECTION LIMIT ITEM MODEL HP/rpm EC05-2 2.515.500 EC07-2 3.3/5,500 Below 110% of rated output EClO 415,000 Max. Output' EC17 6.515,OQO 1215.000 EC25-2 EC05-2 1.715.500 E CO 7-2 2.215,500 EClO 314,000 Continuous Rated Output EC17 5.014,OOO EC25-2 8.514.000 ITEM MODEL...
  • Page 56 ITEM ft-lbs MODEL kg-cm TOOL R E M A R K S EC05-2 28-30 390-420 EC07-2 400-500 EClO 29-36 Magneto clamp nuts EC17 450-500 33-36 EC25-2 800-1000 58-72 EC05-2 EC07-2 Spark plug 250-300 18-22 EC25-2 EC05-2 90-1 EC07-2 6.5-7.3 EClO...

  • Page 57: Maintenance And Storing

    13 MAINTENANCE STORING The following .maintenance jobs apply when the engine is operated. correctly under normal conditions. The indicated maintenance intervals are b y n o means guarantees for maintenance free operations during these intervals. For example, if the engine is operated in extremely dusty conditions, the air cleaner -should be cleaned every day, instead of every 50,hours.

  • Page 58: Every 1000 Hours (Yearly) Checks And Maintenance

    13-5 EVERY 1000 HOURS (YEARLY) CHECKS MAINTENANCE Reasons Maintenance Checks them for requiring Perform overhauls, clean correct or replace parts. The engine output drops and become out of order. Change piston rings. To prevent from danger caused by the fuel leakage. Replace fuel pipe once a year.
  • Page 61 "...
  • Page 63 Industrial Engines...

This manual is also suitable for:

Ec07-2Ec10Ec17Ec25-2

Table of Contents