Kohler CH18-26 User Manual download pdf (Page 9)

Change Oil and Filter, Service Oil Cooler

Change Oil

Change oil after every 100 hours of operation (more

frequently under severe conditions). Refill with service

class SG, SH, SJ or higher oil as specified in the

‘‘Viscosity Grades’’ table (Figure 3) on page 5.

Change the oil while the engine is still warm. The oil will

flow more freely and carry away more impurities. Make

sure the engine is level when filling, checking, and

changing the oil.

Change the oil as follows (see Figures 8 and 9):

1. To keep dirt, debris, etc., out of the engine, clean

the area around the oil fill cap/dipstick before

removing it.

2. Remove one of the oil drain plugs, oil fill cap, and

dipstick. Be sure to allow ample time for complete

drainage.

3. Reinstall the drain plug. Make sure it is tightened

to 13.6 N·m (10 ft. lb.) torque.

4. Fill the crankcase, with new oil of the proper type,

to the “F” mark on the dipstick. Refer to “Oil Type”

on page 5. Always check the level with the dipstick

before adding more oil.

5. Reinstall the oil fill cap and tighten securely.

Reinstall dipstick.

NOTE: To prevent extensive engine wear or

damage, always maintain the proper oil

level in the crankcase. Never operate the

engine with the oil level below the “L” mark

or over the “F” mark on the dipstick.

Figure 8. Oil Drain Plugs, Oil Filter, and Oil Cooler

(CH25 shown).

Oil Filter

Oil Cooler

Oil Drain Plug

Check Oil Level

The importance of checking and maintaining the proper

oil level in the crankcase cannot be overemphasized.

Check oil BEFORE EACH USE as follows:

1. Make sure the engine is stopped, level, and is cool

so the oil has had time to drain into the sump.

2. To keep dirt, debris, etc., out of the engine, clean

the area around the dipstick before removing it.

3. Remove the dipstick; wipe oil off. Reinsert the

dipstick into the tube and press all the way down.

4. Remove the dipstick and check the oil level.

The oil level should be up to, but not over, the “F”

mark on the dipstick. See Figure 7.

“F” Mark

Operating

Range

Figure 7. Oil Level Dipstick.

5. If the level is low, add oil of the proper type, up to

the “F” mark on the dipstick. (Refer to “Oil Type” on

page 5.) Always check the level with the dipstick

before adding more oil.

NOTE: To prevent extensive engine wear or

damage, always maintain the proper oil

level in the crankcase. Never operate the

engine with the oil level below the “L”

mark or over the “F” mark on the dipstick.

Oil Sentry™

Some engines are equipped with an optional Oil

Sentry™ oil pressure switch. If the oil pressure

decreases below an acceptable level, the Oil Sentry™

will either shut off the engine or activate a warning

signal, depending 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™.

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Kohler CH18-26 User Manual Page 9

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