Perio
d
ic maintenance an
d
a
d
justment
7-13
7
2. Pull the air filter element out.
3. Insert a new air filter element into
the air filter case as shown.
NOTICE:
Make sure that the air
filter element is properly seate
d
in the air filter case. The en
g
ine
shoul
d
never
b
e operate
d
with-
out the air filter element in-
stalle
d
, otherwise the piston(s)
an
d
/or cylin
d
er(s) may
b
ecome
excessively worn.
[ECA10482]
4. Install the air filter case cover by
installing the screws.
To clean the air filter check hoses
1. Check the hoses shown for accu-
mulated dirt, water or oil.
2. If dirt, water or oil is visible, re-
move the hose, clean it, and then
install it in its original position.
EAU21341
A
d
justin
g
the en
g
ine i
d
lin
g
spee
d
The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
The engine should be warm before
making this adjustment.
TIP
z
The engine is warm when it quick-
ly responds to the throttle.
z
A diagnostic tachometer is need-
ed to make this adjustment.
1. Attach the tachometer to the
spark plug lead.
2. Check the engine idling speed
and, if necessary, adjust it to
specification by turning the throt-
tle stop screw. To increase the en-
gine idling speed, turn the screw in
direction (a). To decrease the en-
gine idling speed, turn the screw in
direction (b).
ZAUV0252
1. Air filter check hose
1
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