8
XX229
7. Reinstall the air filter cover, then turn it approxi-
mately 1/16 of a turn clockwise to seat it to the hous-
ing. Verify the duck bill drain is located at the bottom
of the assembly. Then lock the cover to the housing
by pressing the retainer tab inward toward the assem-
bly.
8. Install the rear cargo tray.
Spark Arrester
NOTE: The muffler has a spark arrester which
must be periodically cleaned. At the intervals shown
in the Maintenance Schedule, clean the spark arrester
using the following procedure.
1. Remove the screw (A) securing the spark arrester
assembly to the muffler.
XX081
2. Using a suitable brush, clean the carbon deposits
from the screen taking care not to damage the screen.
NOTE: If the screen or gasket is damaged in any
way, it must be replaced.
WC929
3. Install the spark arrester assembly and secure the
screw. Tighten to 72 in.-lb.
Valve/Tappet Clearance
NOTE: To check/adjust clearance, see Engine —
Testing Engine
Compression
NOTE: The engine should be warm (operating tem-
perature) and the battery fully charged for an accu-
rate compression test.
NOTE: The rear cargo tray must be removed for
this procedure.
1. Remove spark plugs. See spark plugs section for
proper procedure.
2. Attach the spark plug connectors to the ignition
coils. Attach spark plugs to the ignition coils and
ground the plugs on the cylinder heads well away
from the spark plug holes.
3. Attach the Compression Tester Kit.
4. While holding the throttle in the full-open position,
crank the engine over with the electric starter until
the gauge stops climbing (five to 10 compression
strokes). Compression should be 217-261 psi
(1500-1800 kPa). Verify the cylinder compression
readings are within 10% of each other.
5. If compression is abnormally low, verify the following:
A. Starter cranks engine over (normal speed).
B. Gauge is functioning properly.
C. Throttle in the full-open position.
D. Valve/tappet clearance correct.
E. Engine warmed up.
! Warning
Wait until the muffler cools to avoid burns
CAUTION
Do not ground the spark plug on the cylinder head
cover. The cover is made of magnesium and any contact
with spark or electrical arc will severely pit the surface.
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