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Safety • Operation • Maintenance • Storage • Troubleshooting OPERATOR’S MANUAL Engine — Model ZS 161-SH IMPORTANT READ SAFETY RULES AND INSTRUCTIONS CAREFULLY BEFORE OPERATION FORM NO. 769-02627 MTD PRODUCTS AKTIENGESELLSCHAFT • SAARBRÜKEN • GERMANY 08/18/2006...
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This Operator’s Manual is an important part of your new engine. It will help you prepare and maintain the unit for best performance. Please read and understand what it says. Table of Contents Safe Operation Practices ........4 Maintaining Your Engine ........8 Operating Your Engine ........
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NOTES Use this page to make notes and write down important information.
WARNING: Gasoline and its vapors are extremely flammable and explosive. Fire or explosion can cause severe burns or death. If gasoline is spilled on yourself or your clothes, wash your skin and change clothes immediately. • When adding fuel, turn engine OFF and let engine •...
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Running engine produces heat. • Tie up long hair and remove jewelry. Engine parts, especially muffler, • Do not wear loose-fitting clothing, dangling draw- strings or items that could become caught. become extremely hot. Severe thermal burns can occur on contact.
Know Your Engine Muffler Operating Spark Plug Your Choke Control Engine Oil Fill Starter Handle Oil Drain IMPORTANT: This engine Figure 2-1: The major components of the engine. is shipped without gaso- Read this section before starting your engine. Compare the illustrations in Figure 2-1 with your engine to familiarize line or oil in the engine.
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2. Insert the dipstick into the oil filler neck, but do not screw it in. Upper Level 3. If the level is low, slowly add oil to the upper limit on the dipstick. See Figure 2-2 inset. 4. Tighten dipstick firmly before starting engine. Operating IMPORTANT: Do not overfill.
WARNING: Shut off the engine before Periodic inspection and adjustment of the engine is performing any maintenance. To essential if high level performance is to be maintained. prevent accidental start-up, disconnect Regular maintenance will also ensure a long service life. the spark plug boot.
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WARNING: Before tipping engine or equipment to drain oil, drain fuel from tank by running engine until fuel tank Spark Plug is empty. 2. Reinstall the drain plug (if removed), and tighten it securely. Maintaining 3. Refill with the recommended oil (see Operation section) and check the oil level, Figure 3-1.
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Clean Engine 3. Remove spark plug and pour about 1/2 an ounce of engine oil into cylinder. Replace spark plug and crank If the engine has been running, allow it to cool for at slowly to distribute oil. least half an hour before cleaning. Periodically remove 4.
Remedy Cause Problem Engine fails to start 1. Engine flooded from excessive priming. 1. Wait at least ten minutes before starting. 2. Connect wire to spark plug. 2. Spark plug wire disconnected. 3. Fill tank with clean, fresh gasoline. 3. Fuel tank empty or stale fuel. Trouble 4.
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