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Robin EH36 User Manual

Robin EH36
71 pages
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R
Model
ISSUE EMD-ES1724
EH36/41
Air-cooled, 4-cycle Gasoline Engine
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Robin EH36 Specifications

General IconGeneral
BrandRobin
ModelEH36
CategoryEngine
LanguageEnglish

Summary

2. PERFORMANCE

2-1 MAXIMUM OUTPUT

Defines maximum engine output when fully opened and broken in.

2-2 CONTINUOUS RATED OUTPUT

Describes continuous output at optimum speed for engine life and fuel efficiency.

2-3 MAXIMUM TORQUE

Specifies torque at output shaft when engine produces maximum output.

1. SPECIFICATIONS

3. FEATURES

4. GENERAL DESCRIPTION OF ENGINE COMPONENTS

4-1 CYLINDER AND CRANKCASE

Describes the single-piece aluminum die-casting cylinder and crankcase with cast iron liner.

4-2 MAIN BEARING COVER

Details the aluminum die-casting main bearing cover and its mounting features.

4-3 CRANKSHAFT

Explains the forged carbon steel crankshaft and its pressed-on gears.

4-4 CONNECTING ROD AND PISTON

Describes the aluminum alloy die-casting connecting rod and piston with rings.

4-5 PISTON RINGS

Details the special cast iron piston rings, including top, second, and oil rings.

4-6 CAMSHAFT

Explains camshaft construction for D-type and B-type engines.

4-7 VALVE ARRANGEMENT

Describes the intake valve location and cylinder baffle for cooling.

4-8 CYLINDER HEAD

Details the aluminum die-casting cylinder head with semi-spherical combustion chamber.

4-9 GOVERNOR SYSTEM

Explains the centrifugal flyweight type governor system and its components.

4-10 COOLING SYSTEM

Describes how large fins on flywheel provide cooling air capacity.

4-11 LUBRICATION SYSTEM

Explains splash lubrication via oil splasher on connecting rod.

4-12 IGNITION SYSTEM

Details the transistor-controlled magneto ignition system with automatic timing advance.

4-13 CARBURETOR

Describes the horizontal draft carburetor with float controlled fuel system.

4-14 AIR CLEANER

Details the heavy-duty dual element air cleaner system.

4-15 BALANCER

Explains the balancer's function in reducing vibration by cancelling unbalanced inertia.

4-16 DECOMPRESSION SYSTEM

Explains the automatic decompression mechanism for easy starting.

4-17 SECTIONAL VIEW OF ENGINE

Provides a sectional view illustrating various engine components.

5. DISASSEMBLY AND REASSEMBLY

5-1 PREPARATIONS AND SUGGESTIONS

Offers guidance and tips for engine disassembly and reassembly.

5-2 SPECIAL TOOLS

Lists specific tools required for disassembly, like flywheel puller.

5-3 DISASSEMBLY PROCEDURES

Details step-by-step procedures for disassembling the engine's components.

5-4 REASSEMBLY PROCEDURES

Outlines the procedures and precautions for reassembling engine components.

5-4-1 CRANKSHAFT

Details the process of installing the crankshaft and woodruff key.

5-4-2 PISTON AND PISTON RINGS

Explains how to install oil ring, second ring, and top ring onto the piston.

5-4-3 PISTON AND CONNECTING ROD

Describes assembling the piston and connecting rod, including oil application and clip usage.

5-4-4 CONNECTING ROD

Details connecting rod cap installation and torque specifications for connecting rod bolts.

5-4-5 BALANCER SHAFT

Explains installing the balancer shaft by aligning gear timing marks.

5-4-6 TAPPETS AND CAMSHAFT

Describes oiling and installing tappets and camshaft, aligning timing marks.

5-4-7 ADJUST CRANKSHAFT AND CAMSHAFT END PLAY

Explains how to adjust crankshaft and camshaft end play using proper spacers.

5-4-7-1 CRANKSHAFT END PLAY (For type D and type B)

Details measurement and calculation for crankshaft end play using spacer shims.

5-4-7-2 CAMSHAFT END PLAY (For type D and type B)

Details measurement and calculation for camshaft end play using spacer shims.

5-4-7-3 MAIN BEARING COVER

Describes applying oil, using seal guide, and tightening main bearing cover bolts.

5-4-8 CYLINDER HEAD

Outlines cleaning, inspecting, and installing valves, springs, and cylinder head.

5-4-9 ROCKER ARMS AND PUSH RODS

Explains inserting push rods and assembling rocker arms to cylinder head.

5-4-10 VALVE CLEARANCE ADJUSTMENT

Details positioning piston, adjusting valve clearance, and installing rocker cover.

5-4-11 SPARK PLUG

Describes installing the spark plug and its tightening torque specifications.

5-4-12 CYLINDER BAFFLE

Instructs to install cylinder baffle to cylinder head.

5-4-13 FLYWHEEL MAGNETO

Details installing charge coil, woodruff key, flywheel, and starting pulley.

5-4-14 IGNITION COIL

Describes installing ignition coil and adjusting air gap between coil and flywheel.

5-4-15 BLOWER HOUSING AND RECOIL STARTER

Explains attaching blower housing and installing recoil starter.

5-4-16 GOVERNOR, SPEED CONTROL SYSTEM AND CARBURETOR

Details installing governor lever, speed control system, and carburetor.

5-4-17 MUFFLER

Describes installing muffler bracket, muffler, and muffler cover.

5-4-18 STOP SWITCH

Details installing stop switch and connecting wires.

5-4-19 ELECTRIC STARTER AND CONTROL BOX CP

Explains installing electric starter and control box for optional equipment.

5-4-20 FUEL TANK

Describes installing the fuel tank and connecting fuel strainer.

5-4-21 AIR CLEANER

Instructs to install air cleaner element and cleaner cover.

6. MAGNETO

6-1 FLYWHEEL MAGNETO

Describes the pointless flywheel magneto ignition system with automatic advancing.

6-2 BASIC THEORY

Explains the basic electrical theory of the flywheel magneto system.

6-3 WIRING DIAGRAM

7. AUTOMATIC DECOMPRESSION SYSTEM

8. CARBURETOR

8-1 OPERATION AND CONSTRUCTION

Details the float system, pilot system, main system, and choke operation.

8-1-1 FLOAT SYSTEM

Explains how the float chamber maintains a constant fuel level.

8-1-2 PILOT SYSTEM

Describes the pilot system's role in idling and low-speed operation.

8-1-3 MAIN SYSTEM

Explains the main system's fuel metering for medium and high-speed operation.

8-1-4 CHOKE

Details the choke's function for easy starting when the engine is cold.

8-2 DISASSEMBLY AND REASSEMBLY

Provides procedures for carburetor disassembly and reassembly to ensure proper air/fuel flow.

8-2-1 THROTTLE SYSTEM

Describes removing the throttle stop screw and throttle valve.

8-2-2 CHOKE SYSTEM

Details removing and reassembling the choke shaft and valve.

8-2-3 PILOT SYSTEM

Explains removing and securely reassembling the pilot jet.

8-2-4 MAIN SYSTEM

Covers removing main jet, guide holder, main nozzle, and reassembly with torque specs.

8-2-5 FLOAT SYSTEM

Describes removing float pin, float, clip, and needle valve, with caution for cleaning jets.

9. STARTING SYSTEM

9-1 RECOIL STARTER

Discusses troubleshooting and procedures for disassembling/assembling the recoil starter.

9-1-1 HOW TO DISASSEMBLE (type D)

Provides step-by-step instructions for disassembling the recoil starter mechanism.

9-1-2 HOW TO REASSEMBLE (D-Type)

Details the process for reassembling the recoil starter, including spring winding.

9-1-3 CHECK AFTER REASSEMBLY

Lists checks to perform after reassembling the starter, like knob pull effort and rope recoil.

9-1-4 OTHER GUIDES

Offers guides for spring escape and lubrication of the starter.

9-2 ELECTRIC STARTER

Explains the operation and component parts of the electric starter.

9-2-1 OPERATION AND FUNCTION

Explains how the electric starter engages the engine via magnetic switch and pinion gear.

9-2-2 COMPORNENT PARTS

Illustrates and lists the component parts of the electric starter assembly.

10. TROUBLESHOOTING

10-1 STARTING DIFFICULTIES

Covers issues related to fuel system, compression, and ignition causing starting problems.

10-1-1 FUEL SYSTEM

Lists common fuel system problems like no fuel, choked carburetor, or contaminated fuel.

10-1-2 COMPRESSION SYSTEM

Identifies potential compression issues like dried engine, loose spark plug, or gasket damage.

10-1-3 IGNITION SYSTEM

Checks for lack of sparks, including wiring, coil, plug condition, and timing.

10-2 ENGINE MISFIRES

Lists causes of engine misfires, such as spark plug gap, ignition cable, or compression.

10-3 ENGINE STOPS

Covers reasons for engine stopping, like fuel issues, vapor lock, or seized bearings.

10-4 ENGINE OVERHEATS

Identifies causes of engine overheating, including oil level, timing, and cooling restrictions.

10-5 ENGINE KNOCKS

Lists causes of engine knocking, such as fuel quality, load, deposits, and timing.

10-6 ENGINE BACKFIRES THROUGH CARBURETOR

Covers causes of backfiring, like fuel contamination, stuck valves, or cold engine.

11. INSTALLATION

11-1 INSTALLING

Provides guidelines for mounting the engine, checking position, foundation, and connections.

11-2 VENTILATION

Emphasizes the need for fresh air for cooling and efficient fuel burning.

11-3 EXHAUST GAS DISCHARGE

Stresses safe discharge of noxious exhaust gas outdoors, with pipe length/diameter recommendations.

11-4 POWER TRANSMISSION TO DRIVEN MACHINES

Discusses belt drive and flexible coupling methods for power transmission.

11-4-1 BELT DRIVE

Provides notes for V-belt drives, including alignment and pulley installation.

11-4-2 FLEXIBLE COUPLING

Advises minimizing run-out and misalignment for flexible couplings.

12. SERVICE DATA

12-1 CLEARANCE DATA AND LIMITS

Presents standard and limit values for various component clearances in mm and inches.

12-2 TORQUE SPECIFICATIONS

Lists tightening torque values for various engine bolts and nuts in N.m, Kgf.cm, and ft.lb.

12-3 OIL GRADE CHART

Provides a chart comparing oil viscosity with temperature for lubricant selection.

13. MAINTENANCE AND STORAGE

13-1 DAILY MAINTENANCE

Outlines daily checks including cleaning, fuel leakage, hardware inspection, and oil level.

13-2 INITIAL 20 HRS. MAINTENANCE

Specifies replacing crankcase oil after the initial 20 hours of operation.

13-3 EVERY 50 HRS. (10 DAYS) MAINTENANCE

Details 50-hour maintenance: changing oil, cleaning air cleaner, and checking spark plug.

13-4 EVERY 100–200 HRS. (MONTHLY) MAINTENANCE

Covers monthly maintenance: cleaning fuel filter/tank, inspecting cooling system.

13-5 EVERY 500-600 HRS. MAINTENANCE

Specifies 500-600 hour maintenance: removing cylinder head carbon, cleaning carburetor.

13-6 EVERY 1000 HRS. (YEARLY) MAINTENANCE

Outlines yearly maintenance: engine overhaul and replacing fuel lines.

13-7 ENGINE STORAGE

Provides instructions for preparing the engine for storage, including draining fuel and oiling.

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