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9

Change Oil Filter

Some engines are equipped with an oil filter. Replace
the oil filter 

every other

 oil change, in accordance with

the ‘‘Oil Change Intervals’’ table on page 8. Always use
a genuine Kohler oil filter, Part No. 52 050 02-S, and
replace as follows:

1. Drain the oil from the engine crankcase.

2. Allow the oil filter to drain.

3. Remove the old filter and wipe the filter adapter

gasket surface.

4. Place a new replacement filter in a shallow pan

with the open end up. Pour new oil of the proper
type, in through the threaded center hole. Stop
pouring when the oil reaches the bottom of the
threads. Allow a minute or two for the oil to be
absorbed by the filter material.

5. Apply a thin film of clean oil to the rubber gasket

on the new filter. Install the replacement oil filter
on the engine. Turn the oil filter clockwise until
rubber gasket contacts the filter adapter, then
tighten filter an additional 

2/3 to 1 turn

.

6. Reinstall drain plug. Make sure it is tight.

7. Fill the crankcase with new oil of the proper type

to the ‘‘F’’ mark on the dipstick. Add an additional
1/2 pint of oil for the filter capacity. See
"Specifications" on page 15.

8. Test run the engine to check for leaks. Stop the

engine, allow a minute for the oil to drain down,
and recheck the level on the dipstick. Make sure
oil level is up to but not over the ‘‘F’’ mark on the
dipstick.

Oil Filter

Oil Sentry

Pressure Switch

Figure 6. Oil Filter and Optional Oil Sentry

 Switch.

Service Precleaner and Air Cleaner Element

This engine is equipped with a replaceable, high
density paper air cleaner element. Some engines are
also equipped with an oiled, foam precleaner which
surrounds the paper element. See Figure 7.

Figure 7. Air Cleaner Housing Components.

Check the air cleaner 

daily or before starting the

engine.

 Check for buildup of dirt and debris around the

air cleaner system. Keep this area clean. Also check
for loose or damaged components. Replace all bent or
damaged air cleaner components.

NOTE: Operating the engine with loose or damaged

air cleaner components could allow unfiltered
air into the engine causing premature wear
and failure.

Service Precleaner

If so equipped, wash and reoil the precleaner every

25 hours

 of operation (more often under extremely

dusty or dirty conditions).

1. Remove wing nut(s), and air cleaner cover.

2. Remove precleaner from paper element.

3. Wash the precleaner in warm water with

detergent. Rinse the precleaner thoroughly until all
traces of detergent are eliminated. Squeeze out
excess water (do not wring). Allow the precleaner
to air dry.

4. Saturate precleaner in clean, fresh engine oil and

squeeze out excess oil.

5. Reinstall precleaner over paper element.

6. Reinstall air cleaner cover and wing nut(s).

Tighten wing nut(s) 1/2 to 1 full turn after nut
contacts cover. Do not overtighten.

7. When precleaner replacement is necessary

always use genuine Kohler parts.

Element
Cover Seals

Precleaner

Paper Element

Air Cleaner
Base

Element Cover

Summary of Contents for Magnum 18 HP

Page 1: ...MAGNUM 18 20 HP HORIZONTAL CRANKSHAFT OWNER S MANUAL...

Page 2: ...ontainers in well ventilated unoccupied buildings away from sparks or flames Do not fill the fuel tank while the engine is hot or running since spilled fuel could ignite if it comes in contact with ho...

Page 3: ...ces of ignition away from the battery at all times Keep batteries out of the reach of children Remove all jewelry when servicing batteries Before disconnecting the negative ground cable make sure all...

Page 4: ...ve 32 F 0 C Using this oil substantially increases oil consumption and combustion chamber deposits NOTE Using other than service class SG SH SJ or higher oil or extending oil change intervals longer t...

Page 5: ...contact with hot parts or sparks from ignition Do not start the engine near spilled fuel Never use gasoline as a cleaning agent General Recommendations Purchase gasoline in small quantities and store...

Page 6: ...off position 2 Activate the starter switch Release the switch as soon as the engine starts NOTE After starting the engine it may be necessary to leave the choke partially on for a few minutes before m...

Page 7: ...ARNING Rope Starting Pulley is not a Drive Pulley Do not use backup rope starting pulley as a drive pulley Using starting pulley as a drive could loosen flywheel fastener resulting in bodily harm Main...

Page 8: ...ending on the application NOTE Make sure the oil level is checked BEFORE EACH USE and is maintained up to the F mark on the dipstick This includes engines equipped with Oil Sentry Change Oil and Oil F...

Page 9: ...try Pressure Switch Figure 6 Oil Filter and Optional Oil Sentry Switch Service Precleaner and Air Cleaner Element This engine is equipped with a replaceable high density paper air cleaner element Some...

Page 10: ...r parts Clean Air Intake Cooling Areas To ensure proper cooling make sure the grass screen cooling fins and other external surfaces of the engine are kept clean at all times Every 50 hours of operatio...

Page 11: ...Explosive Gas Batteries produce explosive hydrogen gas while being charged To prevent a fire or explosion charge batteries only in well ventilated areas Keep sparks open flames and other sources of ig...

Page 12: ...carburetor is a fixed main jet type refer to Walbro adjustment Place the throttle into the fast position If possible place the engine underload Turn the main fuel adjusting needle out counterclockwise...

Page 13: ...ee Figure 12 below for best low idle fuel performance Figure 12 Optimum Low Idle Fuel Setting 3 Start the engine and run at half throttle for five to ten minutes to warm up The engine must be warm bef...

Page 14: ...get stabilized fuel into the carburetor To empty the system run the engine until the fuel tank and system are empty 4 Remove the spark plugs Add one tablespoon of engine oil into each spark plug hole...

Page 15: ...ars This warranty does not apply to defects caused by casualty or unreasonable use including faulty repairs by others and failure to provide reasonable and necessary maintenance The following items ar...

Page 16: ...ENGINE DIVISION KOHLER CO KOHLER WISCONSIN 53044 FOR SALES AND SERVICE INFORMATION IN U S AND CANADA CALL 1 800 544 2444 LITHO IN U S A FORM NO 52 590 02 ISSUED 12 04 REVISED MAILED...

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