Figure 21
1. Air cleaner cover
3. If foam element is dir ty , remo v e it from paper
element ( Figure 22 ). Clean thoroughly .
A. W ash foam element in a solution of liquid soap
and w ar m w ater . Squeeze to remo v e dir t, but
do not twist because foam ma y tear .
B . Dr y b y wrapping in a clean rag . Squeeze rag
and foam element to dr y .
C . Saturate element with clean engine oil. Squeeze
element to remo v e ex cess oil and to distribute
oil thoroughly . An oil damp element is
desirable .
Figure 22
1. Foam element 2. Paper element
4. W hen ser vicing foam element, c hec k condition of
paper element. Clean or re place ev er y 100 hours
or as required.
5. Install foam element, paper element, and air cleaner
co v er .
Important: Do not operate the engine
without the air cleaner element because
extr eme engine w ear and dama ge will lik el y
r esult.
Replacing the Spark Plug
Use an NGK BPR 5ES spark plug or equi v alent.
Cor rect air g ap is 0.028-0.032 in. R emo v e plug after
ev er y 100 operating hours and c hec k its condition.
1. Pull wire off spark plug ( Figure 23 ).
Figure 23
1. Spark plug wire
2. Clean around spark plug and remo v e plug from
cylinder head.
Important: R eplace a crack ed, f ouled, or
dir ty spar k plug . Do not sand blast, scrape,
or clean electr odes because engine dama ged
could r esult fr om g rit entering the cylinder .
3. Set air g ap at 0.028-0.032 in. ( Figure 24 ). Install
cor rectly g apped spark plug and tighten fir mly to
17 ft.-lb .
Figure 24
22
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