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3. Push down on handle to tip mower and engine
backward, allowing all oil to run into drain pan.
4. Install drain plug and refill crankcase with the
specified oil; refer to Checking the Oil Level.
Servicing the Air Cleaner
Service Interval: Every 25 hours
Every 100 hours
1. Make sure wire is off spark plug.
2. Remove wing nuts securing air cleaner cover to air
cleaner and remove cover. Clean cover thoroughly
(Figure 28).
1. Air cleaner cover
3. If foam element is dirty, remove it from paper
element (Figure 29). Clean thoroughly.
A. Wash foam element in a solution of liquid soap
and warm water. Squeeze to remove dirt, but do
not twist because the foam may tear.
B. Dry by wrapping in a clean rag. Squeeze rag and
foam element to dry, but do not twist because
the foam may tear.
C. Saturate element with clean engine oil. Squeeze
element to remove excess oil and to distribute oil
thoroughly. An oil damp element is desirable.
Figure 28
1. Foam element
4. When servicing foam element, check condition of
paper element. Replace as required.
Note: Do not use compressed air to clean the paper
element.
5. Install 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. Correct
air gap is 0.028-0.032 inch.
1. Pull molded wire off spark plug (Figure 30).
1. Spark plug wire
2. Clean around spark plug and remove plug from
cylinder head.
Important: Replace a cracked, fouled, or dirty
spark plug. Do not sand blast, scrape, or clean
23
Figure 29
2. Paper element
Figure 30
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