MAINTENANCE

ENGINE MAINTENANCE

S

Hard starting.

 

Use the following maintenance section to keep

S

Engine smoking.

 

S

Spark plug fouling.

 

your unit in good operating condition. All the

 

S

Oil or gas saturation of the air filter.

 

maintenance information for the engine is in

 

 

 

 

the ”Engine Instruction Book”. Before you start

 

 

 

the engine, read this book.

 

 

 

WARNING: Before you make an

 

 

 

inspection, adjustment (except

 

 

 

carburetor), or repair, discon-

 

 

 

nect the wire from the spark plug.

 

 

 

ENGINE TIPPING

 

 

 

When you service the engine, inspect the

 

 

 

blade, or clean the underside of the mower

 

 

 

housing; make sure to always tip the engine

 

 

 

with the spark plug up (see Figure 12). Trans-

 

 

 

porting or tipping the engine with the spark

 

Figure 12

 

plug down will cause:

 

 

 

 

 

 

 

 

 

 

LUBRICATION

1.For maximum performance, lubricate the wheels and all pivot points with engine oil every 25 hours.

2.To lubricate the engine, refer to the ”Engine Instruction Book”.

NOTE: Do not lubricate the engine stop cable. Lubricants will damage the cable and prevent the cable from moving freely. Replace the cable if bent or damaged.

HOW TO CLEAN

THE MOWER HOUSING

WARNING: The blade will rotate when the engine runs. Before you clean the mower housing,

stop the engine and disconnect the wire from the spark plug.

Grass and other debris can keep the mower from working correctly. After you mow, clean the mower housing as follows.

1.Stop the engine.

2.Disconnect the wire from the spark plug.

3.Clean dirt and debris from the top and the bottom of the mower housing. Clean with soap and water. Wipe off excess water be-

fore storage.

F-050401L

HOW TO ADJUST

THE HEIGHT OF CUT

WARNING: The blade will rotate when the engine runs. Before you change the height of cut,

disconnect the wire to the spark plug.

Models With Axle Bolts

To change the height of cut, move the axle bolt at each wheel. Make sure you assemble each axle bolt in the same hole position so that the mower will cut level.

1.Hold the flange nut with a wrench. Use another wrench and loosen the axle bolt.

2.Remove the flange nut (Figure 13).

3.Move the wheel and axle bolt to another position.

4.Assemble the flange nut on the axle bolt. Tighten the axle bolt. Do not turn the flange nut.

 

Axle Bolt

Wheel

 

Flange

Washer

Nut

 

Figure 13

17

 

Page 17
Image 17
Murray 20-inch Push manual Engine Maintenance, Lubrication, HOW to Clean Mower Housing, HOW to Adjust Height of CUT