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12
4. Slide the precleaner (D) and paper element (F)
onto the air cleaner stud (G). Secure with special
washer (E) and wing nut (C) (some models).
5. Reinstall the air cleaner cover (B) and secure with
wing nut (A).
Ignition
This engine is equipped with a dependable
maintenance-free ignition system. Other than
periodically checking/replacing the spark plug,
no adjustments are necessary or possible with this
system.
In the event starting problems should occur that are
not corrected by replacing the spark plug, see your
Kohler Engine Service Center.
NOTE: Some engines may be equipped with
components that comply with RFI
regulations.
Spark Plug
See Figures
1
and
16
Yearly or every 100 hours of operation, remove the
spark plug, check its condition, and reset the gap or
replace with a new plug as necessary. The original
spark plug is a Champion® RC12YC; the Kohler
equivalent is Kohler Part No. 12 132 02-S or for RFI
Kohler Part No. 25 132 14-S. Equivalent alternate
brand plugs can also be used.
1. Before removing the spark plug (D), clean the
area around the base of the plug to keep dirt and
debris out of the engine. See Figure 1.
2. Remove the plug (D) and check its condition.
Replace the plug if worn or if reuse is
questionable. See Figure 16.
3. Check the gap (B) using a feeler gauge (A). See
Figure 16.
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.
4. Adjust the gap (B) by carefully bending the
ground electrode (C). Gap spark plug to 0.76 mm
(0.030 in.). See Figure 16.
5. Reinstall the spark plug into the cylinder head.
Torque the plug to 20 N·m (14 . lb.).
Fuel Filter (If Equipped)
WARNING
Explosive Fuel can cause res
and severe burns.
Do not ll the fuel tank while the
engine is hot or running.
Replace with a Kohler fuel lter yearly or every
50 hours of operation. Removing the air lter cover
will allow easy access to the fuel lter for servicing.
Fuel Tank Screen
See Figure
17
A serviceable fuel tank screen is located under the fuel
tank cap, in the ller neck.
WARNING
Explosive Fuel can cause res
and severe burns.
Do not ll the fuel tank while the
engine is hot or running.
Daily, or as required, clean screen of any accumulation
as follows:
1. Remove the fuel tank cap (A) and screen (B).
2. Clean the screen (B) with solvent. Replace if
damaged.
3. Wipe the screen (B) and insert it into the ller
neck (C).
4. Tighten the tank cap (A) securely.
Fuel Valve
See Figure
18
Engines are equipped with a fuel valve and integral
screen lter located at the inlet of the carburetor. It
controls and lters fuel ow from the tank to the
carburetor.
Every 100 hours of operation clean fuel valve cup
of any accumulated debris. If the screen becomes
clogged or damaged, replace it.
WARNING
Explosive Fuel can cause res
and severe burns.
Do not ll the fuel tank while the
engine is hot or running.
1. Stop the engine.
2. Turn the fuel valve lever (A) to the OFF position.
3. Remove the fuel valve cup (C).
4. Clean the fuel valve cup (C) with solvent and
wipe it o.
5. Check the O-ring (B). Replace if damaged.
6. Place the O-ring (B) on the fuel valve cup (C).
Rotate the fuel valve cup until it is nger tight.
Turn with a wrench 1/2 to 3/4 full turn.
7. Turn the fuel valve (A) to the ON position and
check for leaks. If fuel valve cup leaks repeat
steps 5 and 6.
8. Tighten the tank cap securely.