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Defines maximum engine output when fully opened and broken in.
Describes continuous output at optimum speed for engine life and fuel efficiency.
Specifies torque at output shaft when engine produces maximum output.
Describes the single-piece aluminum die-casting cylinder and crankcase with cast iron liner.
Details the aluminum die-casting main bearing cover and its mounting features.
Explains the forged carbon steel crankshaft and its pressed-on gears.
Describes the aluminum alloy die-casting connecting rod and piston with rings.
Details the special cast iron piston rings, including top, second, and oil rings.
Explains camshaft construction for D-type and B-type engines.
Describes the intake valve location and cylinder baffle for cooling.
Details the aluminum die-casting cylinder head with semi-spherical combustion chamber.
Explains the centrifugal flyweight type governor system and its components.
Describes how large fins on flywheel provide cooling air capacity.
Explains splash lubrication via oil splasher on connecting rod.
Details the transistor-controlled magneto ignition system with automatic timing advance.
Describes the horizontal draft carburetor with float controlled fuel system.
Details the heavy-duty dual element air cleaner system.
Explains the balancer's function in reducing vibration by cancelling unbalanced inertia.
Explains the automatic decompression mechanism for easy starting.
Provides a sectional view illustrating various engine components.
Offers guidance and tips for engine disassembly and reassembly.
Lists specific tools required for disassembly, like flywheel puller.
Details step-by-step procedures for disassembling the engine's components.
Outlines the procedures and precautions for reassembling engine components.
Details the process of installing the crankshaft and woodruff key.
Explains how to install oil ring, second ring, and top ring onto the piston.
Describes assembling the piston and connecting rod, including oil application and clip usage.
Details connecting rod cap installation and torque specifications for connecting rod bolts.
Explains installing the balancer shaft by aligning gear timing marks.
Describes oiling and installing tappets and camshaft, aligning timing marks.
Explains how to adjust crankshaft and camshaft end play using proper spacers.
Details measurement and calculation for crankshaft end play using spacer shims.
Details measurement and calculation for camshaft end play using spacer shims.
Describes applying oil, using seal guide, and tightening main bearing cover bolts.
Outlines cleaning, inspecting, and installing valves, springs, and cylinder head.
Explains inserting push rods and assembling rocker arms to cylinder head.
Details positioning piston, adjusting valve clearance, and installing rocker cover.
Describes installing the spark plug and its tightening torque specifications.
Instructs to install cylinder baffle to cylinder head.
Details installing charge coil, woodruff key, flywheel, and starting pulley.
Describes installing ignition coil and adjusting air gap between coil and flywheel.
Explains attaching blower housing and installing recoil starter.
Details installing governor lever, speed control system, and carburetor.
Describes installing muffler bracket, muffler, and muffler cover.
Details installing stop switch and connecting wires.
Explains installing electric starter and control box for optional equipment.
Describes installing the fuel tank and connecting fuel strainer.
Instructs to install air cleaner element and cleaner cover.
Describes the pointless flywheel magneto ignition system with automatic advancing.
Explains the basic electrical theory of the flywheel magneto system.
Details the float system, pilot system, main system, and choke operation.
Explains how the float chamber maintains a constant fuel level.
Describes the pilot system's role in idling and low-speed operation.
Explains the main system's fuel metering for medium and high-speed operation.
Details the choke's function for easy starting when the engine is cold.
Provides procedures for carburetor disassembly and reassembly to ensure proper air/fuel flow.
Describes removing the throttle stop screw and throttle valve.
Details removing and reassembling the choke shaft and valve.
Explains removing and securely reassembling the pilot jet.
Covers removing main jet, guide holder, main nozzle, and reassembly with torque specs.
Describes removing float pin, float, clip, and needle valve, with caution for cleaning jets.
Discusses troubleshooting and procedures for disassembling/assembling the recoil starter.
Provides step-by-step instructions for disassembling the recoil starter mechanism.
Details the process for reassembling the recoil starter, including spring winding.
Lists checks to perform after reassembling the starter, like knob pull effort and rope recoil.
Offers guides for spring escape and lubrication of the starter.
Explains the operation and component parts of the electric starter.
Explains how the electric starter engages the engine via magnetic switch and pinion gear.
Illustrates and lists the component parts of the electric starter assembly.
Covers issues related to fuel system, compression, and ignition causing starting problems.
Lists common fuel system problems like no fuel, choked carburetor, or contaminated fuel.
Identifies potential compression issues like dried engine, loose spark plug, or gasket damage.
Checks for lack of sparks, including wiring, coil, plug condition, and timing.
Lists causes of engine misfires, such as spark plug gap, ignition cable, or compression.
Covers reasons for engine stopping, like fuel issues, vapor lock, or seized bearings.
Identifies causes of engine overheating, including oil level, timing, and cooling restrictions.
Lists causes of engine knocking, such as fuel quality, load, deposits, and timing.
Covers causes of backfiring, like fuel contamination, stuck valves, or cold engine.
Provides guidelines for mounting the engine, checking position, foundation, and connections.
Emphasizes the need for fresh air for cooling and efficient fuel burning.
Stresses safe discharge of noxious exhaust gas outdoors, with pipe length/diameter recommendations.
Discusses belt drive and flexible coupling methods for power transmission.
Provides notes for V-belt drives, including alignment and pulley installation.
Advises minimizing run-out and misalignment for flexible couplings.
Presents standard and limit values for various component clearances in mm and inches.
Lists tightening torque values for various engine bolts and nuts in N.m, Kgf.cm, and ft.lb.
Provides a chart comparing oil viscosity with temperature for lubricant selection.
Outlines daily checks including cleaning, fuel leakage, hardware inspection, and oil level.
Specifies replacing crankcase oil after the initial 20 hours of operation.
Details 50-hour maintenance: changing oil, cleaning air cleaner, and checking spark plug.
Covers monthly maintenance: cleaning fuel filter/tank, inspecting cooling system.
Specifies 500-600 hour maintenance: removing cylinder head carbon, cleaning carburetor.
Outlines yearly maintenance: engine overhaul and replacing fuel lines.
Provides instructions for preparing the engine for storage, including draining fuel and oiling.