Page 2 - AIR INDEX
The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. WARNING: ▲ ! ▲ ! AIR INDEX To show compliance with California emission regulations, a hangtag has been provided displaying the Air Index level and durab...
Page 3 - FEDERAL EMISSIONS COMPONENT DEFECT WARRANTY
FEDERAL EMISSIONS COMPONENT DEFECT WARRANTY EMISSIONS COMPONENT DEFECT WARRANTY COVERAGE - This emission warranty is applicable in all States, except the state of California.Fuji Heavy industries Ltd. and Robin America, Inc., Lake Zurich, Illinois, (herin “ROBIN AMERICA”) warrant(s) to the initial r...
Page 4 - FOREWORD; E H
FOREWORD Thank you very much for purchasing a ROBIN ENGINE. Your SUBARU ENGINE can supply the power to operate various sorts of machines and equipment. Please take a moment to familiarize yourself with the proper operation and maintenance procedures in order to maximize the safe and effi cient use o...
Page 5 - CONTENTS
CONTENTS SAFETY PRECAUTIONS ........................................................................................................................... 1 COMPONENTS ..........................................................................................................................................
Page 6 - SYMBOLS
6 SYMBOLS Explosion Fire Explosive Pressure Read the owner’s manual Stay clear of the hot surface Exhaust gas is poisonous. Do not operate in an unventilated area. Stop the engine before refueling Fire, open fl ame and smoking prohibited On (Run) Off (Stop) Engine oil Add oil Plus ;positive polarity...
Page 7 - WARNING; SAFETY PRECAUTIONS
7 The safety alert symbol ( ) is used with a signal word ( DANGER, CAUTION, WARNING ), a pictorial and/or a safety message to alert you to hazards. DANGER indicates a hazard which, if not avoided, will result in death or serious injury. WARNING in- dicates a hazard which, if not avoided, could resul...
Page 8 - Please make sure you review each precaution carefully.; EXHAUST PRECAUTIONS; or; REFUELING PRECAUTIONS; • DO not leave cigarettes, sparks and
8 SAFETY PRECAUTIONS Please make sure you review each precaution carefully. EXHAUST PRECAUTIONS • Never inhale gas. It contains carbon monoxide, a colorless, orderless and extremely dangerous gas which can cause unconsciousness or death. • Never operate the engine indoors or in a poorly ventilated a...
Page 9 - PROTECTIVE COVER; Place the protective covers over the; SURROUNDINGS
9 PROTECTIVE COVER • Place the protective covers over the rotating parts. If rotating parts such as the drive shaft, pulley, belt, etc. are left exposed, they are potentially hazardous. To prevent injury, equip them with protective covers or shrouds.• Be careful of hot parts. The muffl er and other ...
Page 10 - engine
10 • Disconnect the LP/NG fuel line before transporting the engine.• Do not move the engine while in operation when it has been removed from the equipment. • Keep the unit dry (do not operate it in rainy conditions). PRE-OPERATION CHECKS • Carefully check fuel hoses and connec-tions for looseness an...
Page 11 - COMPONENTS
11 COMPONENTS Hook Air cleaner cover Blower housing Regulator Oil Cooler Mixer Governor lever Oil fi ller cap Spark plug cap Oil fi lter PTO shaft Oil drain plug(on both sides) Electric starter Oil gauge Voltage regulator REMARKS: • Fuel tank, valve, (sediment bowl type is recommended), fuel hoses, ...
Page 12 - position
12 PRE-OPERATION CHECKS 5W 10W 20W #20 #30 #40 10W-30 10W-40 Singlegrade Multigrade Ambienttemperature -20 -10 0 10 20 30 40 -4 14 32 50 68 86 104 Upper level Lower level Oil gauge Oilgauge Upperlevel Lowerlevel Oilgauge Upperlevel Lowerlevel ENGINE OIL (CHECK DAILY) Before checking or refi lling en...
Page 13 - Fuel Recommendations; LPG
13 GASEOUS FUEL WARNING ▲ ! Do not refuel while smoking, near an open fl ame or other potential hazards. Fuel Recommendations LPG Propane content of 95% of higher NATURAL GAS Methane content of 90% or equivalent INSTRUCTIONS FOR CONVERTING TO NATURAL GAS OPERATION The engine is optimized for LP oper...
Page 14 - VAPOR WITHDRAWL; LPG PIPING DIAGRAM
14 VAPOR WITHDRAWL With a vapor withdrawal system, the LP fuel is vaporized in the fuel tank by heat input from the ambient temperature. The pressure is reduced to about 11” water column (0.4psi) on the outlet side of the primary regulator. The vaporized fuel is then brought to the engine and demand...
Page 15 - BATTERY INSTALLATION; PARTS NEEDED
15 BATTERY INSTALLATION For electric starter operation, proper electric wiring arrangements are needed before normal engine operation. PARTS NEEDED • Use a battery rated 12V-36AH or larger.• Use a proper cable and ground wire to connect battery and key switch and electric starter. LA406 LA408 CABLE ...
Page 16 - WIRING; WIRING DIAGRAM
16 WIRING • Connect positive terminal of electric starter and positive terminal of the battery with battery cable. • Ground negative terminal of the battery to the body of engine or machine with ground wire. NOTE Tighten bolts and nuts on terminals securely so they will not be loosened by vibration....
Page 17 - OPERATING YOUR ENGINE; Close the fuel valve.
17 OPERATING YOUR ENGINE STARTING STOPPING FUEL VALVE (Provided by the equipment manu-facturer) Open the fuel valve. ELECTRIC STARTER Turn the key switch to the “STOP” position. FUEL VALVE Close the fuel valve. ELECTRIC STARTER (Provided by the equipment manu-facturer)Turn the key swtich to the “STA...
Page 18 - EASY TROUBLESHOOTING
18 EASY TROUBLESHOOTING Perform the following checks before you take the engine to your Subaru dealer. If you still have trouble after completing the checks, take the engine to your nearest Subaru dealer. • Engine will not start • Engine lacks power Is ther enough compression? If the spark plug is l...
Page 19 - Is your battery will charged?; Consult your nearest dealer or service shop.
19 Is there a strong spark across the electrode? 1. Remove the spark plug and connect it to the plug cap. Turn key switch to START position while grounding the spark plug against engine body. 2. Try with a new spark plug if the spark is weak or there is no spark. 3. The ignition system is faulty if ...
Page 20 - DAILY INSPECTION; Before funning the engine, check the following service items.; PERIODIC MAINTENANCE
20 EASY TROUBLESHOOTING DAILY INSPECTION Before funning the engine, check the following service items. PERIODIC MAINTENANCE Periodic maintance is vital to safe and effi cient operation of your engine. Check the table below for periodic maintenance intervals. Enough Fuel Excessive vibration, noise Cl...
Page 23 - ENGINE OIL FILTER; fi lter and recheck the oil level.; AIR CLEANER; CAUTION
23 ENGINE OIL FILTER • Initial engine oil fi lter replacement should be performed after 20 hours of operation. Thereafter replace the engine oil fi lter every 200 hours. • When installing a new oil fi lter, apply oil to O-ring, attach the oil fi lter in position and tighten 2/3 turns by hand or with...
Page 24 - environments; BOLTS, NUTS AND SCREWS; Take extreme caution when replacing fuel hose fuel is fl ammable.; BATTERY; Battery electrolyte is an acid and is poisonous and corrosive.
24 • Paper element Clean by taping gently to remove dirt and blow off dust. Never use oil. Clean or replace paper element every 50 hours of operation, and replace element set every 200 hours or once a year. Clean and replace air cleaner elements more often when operation in dusty environments . BOLT...
Page 25 - PREPARATIONS FOR STORAGE; ENGINE OIL; engine indoors in a well ventilated, low
25 PREPARATIONS FOR STORAGE ENGINE OIL • Change the engine oil with fresh oil.• Remove the spark plug, pour about 5cc of engine oil into the cylinder, slowly start the engine for 2 or 3 seconds, and re-install the spark plug. CLEAN AND STORE • Remove the spark plug wires from the spark plugs.• Slowl...
Page 26 - SPECIFICATIONS; MODEL
26 SPECIFICATIONS MODEL EH72 LP/NG Type Air-Cooled, 4-stroke, V-Twin Cylinder, Horizontal P.T.O. shaft, OHV, LPG/NATURAL GAS Fueled Engine Bore x Stroke mm(in) 2-84 x 65 (3.31 x 2.56) Displacement cm³(cu.in) 720 (43.9) Maximum Torque N•m 39.5 N•m @ 2500rpm Maximum Output LPG (Propane content of 95% ...
