40
Checking Spark Plugs
To see if the spark plugs being used are of
the proper heat range (after the snowmo-
bile has been operated under normal driv-
ing conditions), remove the spark plugs
and examine the condition of the center
electrode insulator of each spark plug.
AO352A
A. TAN or LIGHT BROWN insula-
tor indicates correct spark plugs
(heat range).
B. LIGHT GRAY or WHITE insula-
tor indicates over-heating of the
engine. This condition is caused by
a too lean condition or incorrect
spark plugs (heat range too hot).
C. BLACK insulator indicates fuel
in the combustion chamber is not
burning completely. This condi-
tion is caused by a too rich con-
dition, too much oil, or incorrect
spark plugs (heat range too cold).
NOTE: If the center electrode insu-
lators are light gray, white, or black
and if the carburetor adjustments,
oil-injection pump synchronization,
and ignition timing are correct, dif-
ferent heat-range spark plugs may
be necessary. Authorized Arctic Cat
Snowmobile dealers have detailed
spark plug information. Consult a
dealer before changing spark plugs,
as incorrect heat-range spark plugs
could cause poor engine perfor-
mance or engine damage.
Checking/Adjusting
Valve Clearance
(Bearcat Z1 XT/TZ1
Models)
After 5000 miles or prior to seasonal
storage, valve clearance should be
checked and adjusted as necessary.
NOTE: Take the snowmobile to an
authorized Arctic Cat Snowmobile
dealer for inspection and service.
This service is at the discretion and
expense of the snowmobile owner.
Battery (Electric
Start)
These standard and sealed batteries after
being in service require regular cleaning
and recharging in order to deliver peak
performance and maximum service life.
The following procedures are recom-
mended for cleaning and maintaining
standard and sealed batteries. Always
read and follow instructions provided
with battery chargers and battery prod-
ucts.
NOTE: Battery maintenance may
be done by the snowmobile owner if
qualified to do so. If the owner does
not feel qualified, take the snowmo-
bile to an authorized Arctic Cat
Snowmobile dealer for this service.
This service is at the discretion and
expense of the snowmobile owner.
To remove and charge the battery, use the
following procedure:
CAUTION
If a spark plug is light gray, white, or
black and another is tan or light
brown, take the snowmobile to an
authorized Arctic Cat Snowmobile
dealer for inspection and service. If
not under warranty, this service is at
the discretion and expense of the
snowmobile owner.
CAUTION
It is critical that the checking/adjust-
ing valve clearance be done at the
recommended intervals or severe
engine damage may occur.
Содержание Bearcat 570 XT
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