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Figure 12. Removing Elements,

After the main element is removed, check the

condition of the inner element. It should be

replaced whenever it appears dirty, typically every

other time the main element is replaced. Clean the

area around the base of the inner element before

removing it, so dirt does not get into the engine.

4. Do not

was the paper element and inner element

or use pressurized air, this will damaged the

elements. Replace dirty, bent or damaged

elements with new genuine Kohler elements as

required. Handle new elements carefully; do not

use if the sealing surfaces are bent or damaged.

Check all parts for wear, cracks, or damage.

Replace any damaged components.

6. Install the new inner element, Kohler Part No.

25 083 04-S

followed by the outer element, Kohler

Part No. 25 083 01-S. Slide each fully into place in

the air cleaner housing.

Reinstall the end cap so the dust ejector valve is

down and secure with the two retaining clips. See

Figure 13.

Dust

Ejector

Valve

'igure 13, Heavy-Duty Air Cleaner Assembly.

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 100 hours of operation (more often under

extremely dusty, dirty conditions), remove the blower

housing* and other cooling shrouds. Clean the cooling

fins and external surfaces as necessay. Make sure the

cooling shrouds are reinstalled.

NOTE: Operating the engine with a blocked grass

screen, dirty or plugged cooling fins, and/or

cooling shrouds removed, will cause engine

damage due to overheating.

*Cleanout kits 25 755 20-S (black) or 25 755 21 -S

(gold) allow inspection and cleanout of the cooling

fins, without removing the blower housing.

Ignition System

Carbureted Engines

Use an electronic Capacitive

Discharge (CD) ignition system. Other than periodically

checkingheplacing the spark plugs, no maintenance,

timing, or adjustments are necessary or possible with

this system.

EFI Engines

Incorporate a computer-controlled

battery ignition system with individual coils. Other than

periodically checkingheplacing the spark plugs, no

maintenance, timing, or adjustments are necessary or

possible with this system.

Check Spark

Plugs

Every 200 hours of operation, remove the spark plugs,

check condition, and reset the gap or replace with new

plugs as necessay. The standard spark plug is a

Champion@ RC12YC (Kohler Part No. 12 132 02-S). A

high-performance spark plug, Champion@ Premium

Gold 2071 (used on Pro Series engines, Kohler Part

No. 12 132 06-S) is also available. Equivalent alternate

brand plugs can also be used.

Before removing the spark plug, clean the area

around the base of the plug to keep dirt and debris

out of the engine.

Remove the plug and check its condition.

Replace the plug if worn or reuse is questionable.

NOTE: Do not clean the spark plug in a machine

using abrasive grit. Some grit could

remain in the spark plug and enter the

engine causing extensive wear and

damage.