Figure 27
1. Oil lter 3. Adapter
2. Gasket
4. Install the re placement oil filter to the filter
adapter . T ur n the oil filter cloc kwise until the
r ubber g ask et contacts the filter adapter; then
tighten the filter an additional 1/2 to 3/4 tur n
( Figure 27 ).
5. Fill the crankcase with the proper type of new
oil; refer to Changing and Draining the Oil in
Engine Maintenance , pag e 21 .
Servicing the Spark Plug
R e place the spark plug after ev er y 100 operating
hours . Mak e sure that the air g ap betw een the
center and side electrodes is cor rect before
installing the spark plug . Use a spark plug wrenc h
for remo ving and installing the spark plug(s) and a
g apping tool/feeler g aug e to c hec k and adjust the
air g ap . Install a new spark plug if necessar y .
T ype: Champion R C12Y C (or equi v alent)
Air Gap: 0.030 inc h (0.76 mm)
Removing the Spark Plug
1. Diseng ag e the blade control switc h, set the
parking brak e , stop the engine , and remo v e
the k ey .
2. Pull the wire off of the spark plug ( Figure 28 ).
Clean around the spark plug to prev ent dir t
from falling into the engine and potentially
causing damag e .
Figure 28
1. Spark plug
3. R emo v e the spark plug and metal w asher .
Checking the Spark Plug
1. Look at the center of the spark plug ( Figure 29 ).
If y ou see light bro wn or g ra y on the insulator ,
the engine is operating properly . A blac k
coating on the insulator usually means the air
cleaner is dir ty .
Important: Nev er clean the spar k plug .
Al w ays r eplace the spar k plug when it has
a black coating , w or n electr odes, an oil y
film, or cracks.
2. Chec k the g ap betw een the center and side
electrodes ( Figure 29 ). Bend the side electrode
( Figure 29 ) if the g ap is not cor rect.
25
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