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4. Push down on the handle to tip the mower and the
engine backward, allowing more oil to run into the
drain pan.
5. Install the drain plug and refill the crankcase with the
proper oil; refer to Checking the Engine Oil Level.
Servicing the Air Cleaner
Service Interval: Every 25 hours—Clean and oil the air
cleaner foam element. (More often in
dirty or dusty conditions)
Every 100 hours—Clean or replace
the paper air filter element. (More
often in dirty or dusty conditions)
Every 300 hours—Change the air
filter paper element
Important: Service the air cleaner more often in
dirty or dusty conditions
1. Make sure the wire is off of the spark plug.
2. Remove the wing nuts securing the air cleaner cover
and remove the cover (Figure 18).
1. Air cleaner cover
3. Clean the cover thoroughly.
4. If the foam element is dirty, remove it from the paper
element (Figure 19) and clean thoroughly, as follows:
A. Wash the foam element in a solution of liquid
soap and warm water. Squeeze it to remove dirt,
but do not twist it because the foam may tear.
B. Dry the foam element by wrapping it in a clean
rag. Squeeze the rag and foam element to dry
it, but do not twist it.
C. Saturate the foam element with clean engine oil.
Squeeze the element to remove excess oil and
to distribute the oil thoroughly. An oil damp
element is desirable.
Figure 18
1. Foam element
5. Check condition of the paper element. Clean by
gently tapping the filter or replace it as required.
Important: Do not use compressed air to clean
the paper element.
6. Install the foam element, paper element, and air
cleaner cover.
Important: Do not operate the engine without
the air cleaner element because extreme engine
wear and damage will likely result.
Replacing the Spark Plug
Service Interval: Every 100 hours
Use an NGK BPR 5ES spark plug or equivalent. The
correct air gap is 0.028-0.032 inch.
1. Pull the molded wire off of the spark plug (Figure 20).
1. Spark plug wire
2. Clean around the spark plug and remove it from the
cylinder head.
Important: Replace a cracked, fouled, or dirty
spark plug. Do not sand blast, scrape, or clean
electrodes because engine damage could result
from grit entering the cylinder.
21
Figure 19
2. Paper element
Figure 20
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