Speed Control Adjustments

Engine speed adjustment must be attempted only by a qualiﬁed me- chanic and the adjustments must be made using an accurate tachom- eter. It is recommended that low-idle speed be adjusted between 1800 to 2200 RPM and high idle speed 3700 to 3800 RPM. Check in your welder manufacture’s manual for exact speed settings.

Troubleshooting

The table below provides basic troubleshooting guidance. If you fail to resolve the problem after taking the corrective actions suggested, contact the equipment manufacturer or a Robin Subaru dealer.

Engine Starting	Damaged spark plug(s). Check the spark plug gap. Check for
Engine cranks but	a bad insulator on plug and replace if damaged. Clean carbon
fails to start	deposit from electrode. Id wet, dry electrode.
	Fuel Supply. Check fuel supply and shut-off valve. Check fuel ﬁlter
	and clean if dirty. Check fuel ﬁlter: clean or replace if dirty. Check
	fuel line connections into carburetor for air leaks.
	Fuel. Gasoline may have water mixed in or the gasoline grade is
	not correct.
	Carburetor problems. Flooding carburetor, the ﬂoat may be bad
	or stuck. Varnish build up deposits in the carburetor, the carburetor
	will have to be disassembled.
	Governor and throttle linkage. Check linkage connections. Check

! WARNING

Many troubleshooting procedures present hazards that can result in severe personal injury. Only qualiﬁed service personnel with knowledge of fuels, electricity, and machinery hazards should perform service procedures.

Review the safety precautions on the inside cover page.

Hot engine parts can cause severe burns. Always allow the engine time to cool before performing any maintenance or service.

	tension in springs. Check governor, throttle and speed adjustments
	.
	The fuel cut-off solenoid is faulty. Check for lose or damaged
	wires and connectors. Check voltage levels at the connector to the
	solenoid. Replace harness or solenoid.
	Check air cleaner and service if dirty.

Engine Starting	Key or start switch. Check wiring connections and switch.
Electric starter	No continuity between the key switch and the starter. Replace
does not operate
	wires.
	No continuity between the battery and starter. Replace cable.

Problem	Probable Cause and Remedy
Engine Starting	Poor battery connections: Clean and tighten the positive (+) and
Engine cranks	negative (-) connections at battery and engine.
slowly or not at all	Battery is not fully charged: Recharge the battery.
	Battery is not fully charged: Recharge the battery.
	Electric starter is faulty: Check starter brushes and bearings.
	Improper engine oil: Change oil having the proper viscosity for
	the ambient temperature.
	There is a load on the engine: Remove load and retry.
	Back pressure: There is excessive back pressure due to a
	plugged or bent exhaust pipe.

	Low battery. Change or recharge battery.
	Starter solenoid is bad. Check voltages, clean repair, or replace.
	Starter motor is bad. Check brushes and wiring, repair or replace.
	Engine seizure. The crankshaft has seized or the piston and cylin-
	der have seized. Check crankshaft bearings and bearing surface. 1
Engine Starting	Low fuel.
Electric starter	Poor wiring connection or no continuity of ignition system.
operates but	Poor wiring connection or no continuity of ignition system.
engine does not	Check wiring connections and ignition coils for a short.
start	Electric starter is bad. Slow cranking RPM is caused by low volt-

	age at starter or worn brushes or bearings. Repair or replace.

EH64 specifications

The Subaru Robin Power Products EH64 is an advanced engine renowned for its reliability and efficiency, features that have made it a preferred choice in various applications, including industrial, agricultural, and commercial use. Designed to provide superior performance, the EH64 is equipped with a wide range of features that maximize its operational capabilities.

One of the standout characteristics of the EH64 is its lightweight design. Weighing in at just 64 pounds, this engine combines portability with powerful output, making it ideal for both mobile and stationary applications. The EH64 is powered by a high-performance 4-stroke, air-cooled engine that delivers a robust 6.4 horsepower. This output is sufficient for a variety of tasks, including powering equipment such as pumps, generators, and small machinery.

A key technology incorporated into the EH64 is Subaru’s advanced combustion technology. This engine employs a precision-engineered combustion chamber designed to enhance fuel efficiency while minimizing emissions. The result is a cleaner, more efficient burn that not only extends the engine's lifespan but also aligns with modern environmental standards. The engine operates smoothly across a range of speeds due to its excellent throttle response, providing consistency and control during operation.

Moreover, the EH64 features a dual-balanced crankshaft design that significantly reduces vibration. This design not only enhances comfort during operation but also increases the durability of the engine by minimizing wear and tear on internal components.

The Subaru Robin EH64 is also designed with user-friendliness in mind. It features an easy-start recoil mechanism, allowing for quick and reliable ignition, even in cold weather conditions. Furthermore, the engine includes a durable aluminum alloy cylinder, which provides increased heat dissipation and reduces the risk of overheating during extended use.

Maintenance is simplified with the EH64, thanks to its accessible layout, making routine checks and servicing straightforward. The engine's durable construction ensures that it can withstand the rigors of demanding environments, providing users with years of reliable service.

In summary, the Subaru Robin Power Products EH64 stands out in the market for its combination of lightweight design, powerful performance, advanced technologies, and user-friendly features. Whether for commercial usage or personal projects, the EH64 exemplifies quality and reliability, making it a preferred choice among engine options.