MAINTENANCE

SPARK PLUG

3. Before installing the spark plug, coat

 

the threads lightly with oil for easy re-

Check the spark plug every 25 hours. Re-

moval. Tighten the spark plug to a torque

place the spark plug if the electrodes are

of 15 foot–pounds.

pitted or burned or if the porcelain is

 

 

cracked.

Feeler Gauge

 

0.035”

1.Make sure the spark plug is clean. Clean the spark plug by carefully scrap- ing the electrodes (do not sand blast or use a wire brush).

2. Check the spark plug gap with a feeler

 

 

gauge. See “Product Specifications” for

Spark Plug

 

the correct spark plug gap and replace-

Figure 11

 

ment spark plug.

 

 

 

 

 

 

 

 

HOW TO CLEAN THE AIR FILTER

The engine uses a foam air filter that can be cleaned and reused. Clean and oil the air filter every 25 hours. Clean more often in dusty conditions. Remove and clean the air filter as follows:

CAUTION: Never run the engine without the air filter installed. An air filter clogged with dust can result in loss of engine power and can cause excessive wear or damage to the engine. If the air filter is clogged, clean or replace immediately.

1.

Disconnect the spark plug wire from the

 

spark plug.

2.

Remove the screws from the air filter

 

cover (see Figure 12). Remove the air

 

filter cover and the air filter.

3.

Wipe the cover and the inside of the air

 

filter housing with a clean cloth.

4.

Clean the air filter in a solution of water

 

and household detergent. Rinse tho-

 

roughtly in clean water.

6.Cover the outside of the air filter with oil. Use the same type of oil as used to make the fuel mixture. Lightly squeeze the air filter to distribute and remove any excess oil.

7.Put the clean air filter into the air filter housing.

8.Install the air filter cover and secure with the screws as shown.

9.Connect the spark plug wire to the spark plug.

Air Filter

Cover

5. Wrap the air filter in a dry clean cloth.

Filter Housing

Screw

Squeeze out (do not twist) all solution

until dry.

Figure 12

CYLINDER EXHAUST PORTS

 

Clean the cylinder exhaust ports after every

 

75 hours of operation. For this procedure, we

 

recommend that you take your unit to a Au-

 

thorized Service Center.

17

F–031305L

Page 17
Image 17
Murray 11052x92D manual Ment spark plug, Filter cover and the air filter