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Safe Operation Practices • Set-Up • Operation • Maintenance • Troubleshooting • Warranty
Otraep Or ’s Mlauna
179cc & 208cc OHV Horizontal Shaft Engine
752Z165-SUB, 752Z265-SU, 752Z365-SUB, 752Z265-JU, 752Z365-JU,
752Z270-SU, 752Z370-SUB, 752Z170-L0, 752Z170-C0A
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 4
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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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g. Do not overfill fuel tank. Fill tank to no more than Maintenance & Storage 1 ⁄2 inch below the bottom of the filler neck to allow 1. Keep the engine in safe working order space for fuel expansion. 2. Allow the engine to cool at least five minutes before h. Replace gasoline cap and tighten it securely. storing. Never tamper with safety devices. Check their i. If gasoline is spilled, wipe it off the engine and the proper operation regularly. equipment. Move the machine to another area. Wai
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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 NOTE: The engine is shipped without gasoline in the engine. engine stopped. Running the engine with insufficient oil can cause serious engine damage and void the engine warranty. 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
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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 Throttle Air Filter Oil Fill Fuel Fill Fuel Fill Oil Fill Choke Primer Key Throttle Choke Oil Drain Starter Button Electric Starter Choke Power Inlet Oil Fill Recoil Starter Handle Starter Button Figure 4-1 Throttle Fuel Shut-Off Valve The throttle control regulates the speed of the engine and will If equipped, is used for controlling the flow of fuel between shut off the engine when it is moved into the stop position. usage and transport/storage. Choke Electric Star
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Operation 5 • DO NOT operate engine or pull on starter rope Pre-Operation Check with spark plug removed. Fuel can spray from IMPORTANT: The engine is shipped without gasoline in the spark plug hole and ignite. engine. See the Set-Up Section of this manual for instructions on NOTE: Allow the engine to warm up for a few minutes after adding gasoline. starting. The engine will not develop full power until it reaches operating temperatures. IMPORTANT: Some engines are shipped with oil already i
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b. If your house wiring does not have a G.F.I. Three- position until engine runs smoothly. Wire Grounded System, DO NOT USE THIS ELECTRIC • Finally, move the choke control to the NO STARTER UNDER ANY CONDITION. CHOKE position. c. If your house wiring is grounded and a G.F.I. If the engine dies after choke control is moved to “NO CHOKE” three-Prong Wall Receptacle is not available at the position, repeat steps 5 through 10 to restart engine. location where your starter will be used, one must
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WARNING! When pulling the starter rope, the rope Stopping the Engine & Short Term Storage can unexpectedly jerk back toward the engine Stop engine in accordance with the equipment Operator’s causing serious injury. To avoid this risk, carefully Manual. follow these instructions: 7. Grasp the starter cord handle. WARNING! To avoid unsupervised engine operation, especially by children, NEVER leave the • Pull rope out slowly until you feel drag. engine unattended while running. Always turn of
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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 Oil F
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12. Fill with the recommended Oil, Fig. 6-3. 10w 20w Spark Plug Spark Plug 20 Boot 30 40 20w40, 20w50 15w40, 15w50 10w40 10w30 (ºC) -30º -20º -10º 0º 10º 20º 30º 40º (ºF) -20º 0º 20º 40º 60º 80º 100º Figure 6-1 Fig. 6-3 NOTE: DO NOT overfill oil filler. Doing so may result in oil carry-over to the equipment and cause malfunction or damage. NOTE: DO NOT allow oil level to fall below and “L” mark on dipstick. Doing so may result in equipment malfunction or damage. 13. Wipe away any spilled oi
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Spark Plug Service Air Filter NOTE: Not all engines have air filters, such as engines used for WARNING! DO NOT check for spark with spark snow throwers. Service the air filter if one is present. plug removed. DO NOT crank engine with spark Paper filters cannot be cleaned and must be replaced once a year plug removed. or every 100 operating hours; more often if used in extremely Check the spark plug yearly or every 100 operating hours. To dusty conditions. ensure proper engine operation,
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Alternator (if equipped) WARNING! DO NOT pour fuel from the engine or siphon fuel by mouth. Contact your Authorized MTD Servicing Dealer for alternator related electrical problems such as: • Inoperative Starter 2. Drain fuel into an approved red gasoline container, being careful to avoid spilling. • Discharged Battery 3. Run the engine until remaining fuel is consumed. • Fuse Replacement • Alternator Maintenance/Repairs WARNING! NEVER leave the engine unattended when it is running and NEVER
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NOTE: If engine fuel is to be stored for more than one season, Oil Cylinder Bore without gasoline stabilizer, it will gradually deteriorate. Also, if WARNING! When lubricating cylinder bore, fuel it is stored in the engine’s gas tank without gasoline stabilizer it is likely that your carburetor will have gum deposits, a clogged may spray from the spark plug hole. To prevent fuel system and will VOID YOUR WARRANTY. Prepare the fuel for serious injury from fuel fires, follow these instructio
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Off-Season Storage CAUTION: Failure to use a fuel stabilizing additive or completely run the engine until it’s out of fuel before off-season storage may result in damage to your engine’s carburetor. Subsequent damage would not be covered under the manufacturer’s warranty. Engines stored between 30 and 90 days need to be treated with a gasoline stabilizer and engines stored over 90 days need to be drained of fuel to prevent deterioration and gum from forming in fuel system or on essential
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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 752Z165-SUB N/A 951-10292 951-10649 731-05632 951-10652 752Z170-C0A 951-10794 951-10292 951-10649 N/A 951-10652 752Z170-L0 951-10794 951-10292 951-10917 N/A 951-10652 752Z265-JU 951-10298 951-10292 951-10300 731-05632 951-10358 752Z265-SU N/A 951-10292 951-10300 731-05632 951-10358 752Z270-SU N/A 951-10292 951-10300 731-05632 951-10358 752Z365-JU 951-10298 951-10292 951-10649 731-05632 951-10652 752Z365-SUB N/A 951-10292 9
