Sears 917.29425 owner manual Engine, Lubrication, Air Filter, Muffler

CAUTION: Disconnect spark plug wire before performing any maintenance (except carburetor adjustment) to prevent accidental starting of engine.

Prevent fires! Keep the engine free of grass, leaves, spilled oil, or fuel. Remove fuel from tank before tipping unit for main- tenance. Clean muffler area of all grass, dirt, and debris.

Do not touch hot muffler or cylinder fins as contact may cause burns.

ENGINE

LUBRICATION

Use only high quality detergent oil rated with API service classification SF-SJ. Se- lect the oil’s SAE viscosity grade accord- ing to your expected temperature.

NOTE: Although multi-viscosity oils

(5W-30, 10W-30, etc.) improve starting in cold weather, they will result in increased oil consumption when used above 40°F (4°C). Check your engine oil level more frequently to avoid possible engine dam- age from running low on oil.

Change the oil after every 25 hours of operation or at least once a year if the tiller is not used for 25 hours in one year. Check the crankcase oil level before starting the engine and after each five (5) hours of continuous use. Add SAE 30 mo- tor oil or equivalent. Tighten oil filler plug securely each time you check the oil level.

TO CHANGE ENGINE OIL

Determine temperature range expected before oil change. All oil must meet API service classification SF-SJ.

•Be sure tiller is on level surface.

•Oil will drain more freely when warm.

•Use a funnel to prevent oil spill on tiller, and catch oil in a suitable container.

1.Remove drain plug.

2.Tip tiller forward to drain oil.

3.After oil has drained completely, replace oil drain plug and tighten se- curely.

4.Remove oil filler plug. Be careful not to allow dirt to enter the engine.

5.Refill engine with oil. See “CHECK ENGINE OIL LEVEL” in the Operation section of this manual.

Oil drain

Plug

Oil Level

Oil Fill Plug

AIR FILTER

Your engine will not run properly and may be damaged by using a dirty air filter. Replace the air filter every 100 hours of operation or every season, whichever oc- curs first. Service air cleaner more often under dusty conditions.

TO CLEAN AIR FILTER

1.Remove cover.

2.Carefully remove cartridge.

3.Clean by gently tapping on a flat sur-

face. If very dirty, replace cartridge.

CAUTION: Petroleum solvents, such as kerosene, are not to be used to clean car- tridge. They may cause deterioration of the cartridge. Do not oil cartridge. Do not use pressurized air to clean or dry cartridge.

4. Install cartridge, then replace cover.

Latch Tabs

Filter Cover

Tabs Filter

MUFFLER

Do not operate tiller without muffler. Do not tamper with exhaust system. Dam- aged mufflers or spark arresters could create a fire hazard. Inspect periodically and replace if necessary. If your engine is equipped with a spark arrester screen as- sembly, remove every 50 hours for clean- ing and inspection. Replace if damaged.

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