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Safe Operation Practices • Set-Up • Operation • Maintenance • Troubleshooting • Warranty
Otraep Or ’s M launa
277cc, 357cc & 420cc OHV Horizontal Shaft Engine
WARNING
READ AND FOLLOW ALL SAFETY RULES AND INSTRUCTIONS IN THIS MANUAL
BEFORE ATTEMPTING TO OPERATE THIS MACHINE.
FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
Printed In USA Form No. 769-06053A
(March 3, 2011)
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To The Owner 1 Thank You This Operator’s Manual is an important part of your new engine. It will help you prepare and maintain the engine for the best performance. Please read and understand the contents before operating the engine. Table of Contents Safe Operation Practices ........................................ 3 Maintenance ...........................................................13 Safety Labels............................................................ 5 Troubleshooting ..............
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Important Safe Operation Practices 2 WARNING! This symbol points out important safety instructions which, if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate the equipment. Failure to comply with these instructions may result in personal injury. When you see this symbol. HEED IT’S WARNING! CALIFORNIA PROPOSITION 65 WARNING! Engine Exhaust, some of its constituents, and certain
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7. Do not overfill fuel tank. Fill tank to full as indicated by the Maintenance & Storage fuel level indicator installed inside of the fuel tank. Do not 1. Keep the engine in safe working order over-fill to allow space for fuel expansion. On some models, a fuel level indicator may NOT be present, in this instance, 2. Allow the engine to cool at least five minutes before fill the tank no more than 1/2 inch below the bottom of the storing. Never tamper with safety devices. Check their fille
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Safety Symbols This page depicts and describes safety symbols that may appear on this product. Read, understand, and follow all instructions on the machine before attempting to assemble and operate. Symbol Description READ THE OPERATOR’S MANUAL(S) Read, understand, and follow all instructions in the manual(s) before attempting to assemble and operate WARNING—GASOLINE IS FLAMMABLE Allow the engine to cool at least two minutes before refueling. WARNING— CARBON MONOXIDE Never run an engine ind
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Set-Up 3 Checking Oil Level on Engines with Quarter-Turn Oil Fill Caps Oil & Fuel Specifications NOTE: Be sure to check the oil while on a level surface with the IMPORTANT: The engine is shipped without gasoline in the engine stopped. engine. See the following instructions for adding gasoline. To avoid engine damage, it is important to: IMPORTANT: Some engines are shipped with oil already in • Check oil level before each use and every 5 operating the engine, others without oil already in the
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Checking Oil Level on Engines with Threaded Oil Fill Caps Filling Oil Sump NOTE: Be sure to check the oil while on a level surface with the 1. Be sure the engine is upright and level. engine stopped. 2. Remove the oil fill cap dipstick from oil filler tube by To avoid engine damage, it is important to: rotating counter-clockwise and lifting the dipstick out of the engine. Wipe the dipstick clean with a shop rag. • Check oil level before each use and every 5 operating hours when engine is war
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Fuel Recommendations CAUTION: Operating the engine with E85 fuel, an oil/gasoline mixture, dirty gasoline, or gasoline over 30 days old that has not been stabilized using a fuel additive, may result in damage to your engine’s carburetor. Subsequent damage would not be Fuel Level Indicator covered under the manufacturer’s warranty. Top View Use automotive gasoline (unleaded or low leaded to minimize combustion chamber deposits) with a minimum of 87 octane. Gasoline with up to 10% ethanol
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Controls and Features 4 Oil Fill/Dipstick Muffler Fuel Fill Air Filter Cover Air Filter Thumb Screws Muffler Oil Fill/Dipstick Throttle Fuel Fill Primer Bulb Choke Key Fuel Shut-Off Starter Handle Control Oil Drain Electric Inlet & Choke Starter Button Throttle Oil Drain Figure 4-1 Throttle Fuel Fill The throttle control is located on the rear of the engine. It Remove the cap to add fuel. regulates the speed of the engine and will shut off the engine when moved into the STOP position. Ele
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Operation 5 NOTE: Allow the engine to warm up for a few minutes after Pre-Operation Check starting. The engine will not develop full power until it reaches IMPORTANT: The engine is shipped without gasoline or oil in operating temperatures. the engine. See the Set-Up Section of this manual for instructions Familiarize yourself with the engine symbols shown in Fig. 5-1 on adding oil and gasoline. before attempting to start this engine. If this engine is remotely For your safety, and in order
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c. If your house wiring is grounded and a G.F.I. • Finally, move the choke control to the NO three-Prong Wall Receptacle is not available at the CHOKE position. location where your starter will be used, one must If the engine dies after choke control is moved to “NO CHOKE” be installed by a Licensed Electrician BEFORE USING position, repeat steps 5 through 10 to restart engine. THE ELECTRIC STARTER! 11. If the engine fails to start after 3 attempts in the “NO 1. To avoid carbon monoxide poi
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7. Grasp the starter cord handle. Stopping the Engine & Short Term Storage • Pull rope out slowly until you feel drag. Stop engine in accordance with the equipment Operator’s • Without allowing the rope to retract, continue Manual. pulling the rope with one rapid full arm stroke. WARNING! To avoid unsupervised engine • Return the rope slowly to the original position. operation, especially by children, NEVER leave the engine unattended while running. Always turn off NOTE: Following the instr
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Maintenance 6 Maintenance Schedule Each Use or Every Season Every Season Every Season First 5 Hours Service Dates Every 5 Hrs. or 25 Hours or 50 Hours or 100 Hours Check Engine Oil Level P Change Engine Oil P P Check Air Cleaner (If so equipped) P Service Air Cleaner (If so equipped) P Check Spark Plug P Replace Spark Plug P Clean Engine Shroud (If so equipped) P Clean around muffler P Replace Fuel Filter (If equipped) P Periodic inspection and adjustment of the engine is essential if NOTE:
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Checking and Changing the Oil To avoid engine damage, it is important to: • Check oil level before each use and every 5 operating hours when the engine is warm. • Change the oil after the first 5 operating hours and every 50 operating hours thereafter. Engine should still be warm but NOT hot from recent use. Oil Fill Cap and Dipstick WARNING! Before tipping engine or equipment to drain oil, drain fuel from tank by running engine until fuel tank is empty. 1. Carefully disconnect the spark p
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18. Carefully disconnect spark plug wire from grounding post, 9. After the spark plug is seated, tighten with a spark plug if present. wrench to compress the washer. 19. Carefully reconnect the spark plug wire to the spark plug. NOTE: When installing a new spark plug, tighten 1⁄2 turn after the spark plug seats to compress the washer. When NOTE: It is advisable to recheck the oil level after you have reinstalling a used spark plug, tighten 1⁄8-1⁄4 turn after the operated the engine for a sh
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open bed of a pickup truck. Carburetor If you DO NOT have an open vehicle and have to transport If you think you carburetor needs adjusting, see your nearest the engine upright in a closed vehicle, follow these steps for Authorized MTD Servicing Dealer. Engine performance should emptying the fuel tank before transporting: NOT be affected at altitudes up to 7,000 feet (2,134 meters). For Empty fuel tank by using a commercially available suction device operation at higher elevations, contact
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Fuel Storage Extended Storage WARNING! NEVER store engine with fuel in the Draining the Fuel fuel tank inside a building with potential sources of NOTE: Clean debris from the engine before draining fuel from ignition such as hot water heater, space heater, the carburetor. clothes dryer, electric motor, etc. Failure to do so may result in an explosion and result in death or NOTE: If you have prepared your fuel for short-term storage it serious injury. is NOT necessary to drain fuel that co
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Oil Cylinder Bore Off-Season Storage WARNING! When lubricating cylinder bore, fuel CAUTION: Failure to use a fuel stabilizing additive may spray from the spark plug hole. To prevent or completely run the engine until it’s out of fuel serious injury from fuel fires, follow these before off-season storage may result in damage to instructions: your engine’s carburetor. Subsequent damage would not be covered under the manufacturer’s 1. Carefully disconnect the spark plug wire and keep it away
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Troubleshooting 7 Problem Cause Remedy Engine Fails to start 1. Engine flooded 1. Wait at least 10 minutes before starting 2. Spark plug wire disconnected 2. Connect wire to spark plug 3. Fuel tank empty or stale fuel 3. Fill tank with clean, fresh gasoline 4. Engine not choked 4. Choke engine 5. Faulty spark plug 5. Clean, adjust gap or replace 6. Throttle in stop position 6. Move throttle to FAST/Run position Engine runs erratically 1. Spark plug wire loose 1. Connect and tighten spark plug wi
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Replacement Parts 8 ENGINE AIR FILTER SPARK PLUG FUEL CAP KEY FUEL FILTER 478-SUA N/A 951-10292 951-10649A 731-05632 951-10652 483-SUA N/A 951-10292 951-10649A 731-05632 951-10652 490-SUA N/A 951-10292 951-10649A 731-05632 951-10652 178-L0 951-10298 951-10292 951-10917A 731-05632 951-10652 178-LU 951-10298 951-10292 951-10917A 731-05632 951-10652 Phone (800) 800-7310 or (330) 220-4683 to order replacement parts or a complete Parts Manual (have your full model number and serial number ready). Pa
