Yamaha SnoScoot SXR2NJ, Operator'S Manual

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11
5. Remove the oil level stick; then pour
568 ml (19.2 fl oz) of recommended
oil into the fill hole.
6. Install the oil level stick; then
tighten until snug. Install the access
plug.
7. Close the hood and secure with the
two straps.
Carburetor
The carburetor has been calibrated for aver-
age riding conditions; however, altitude,
temperature, and general wear may necessi-
tate certain carburetor adjustments. Since
carburetor adjustments critically affect
engine performance and emissions, Yamaha
recommends that any changes in internal
carburetor calibration be made by an autho-
rized Yamaha Snowmobile dealer; how-
ever, two adjustments can be made on the
carburetor. These are the throttle stop screw
and the throttle cable.
0744-921Y
Throttle Stop Screw
This screw controls the seating position
of the throttle valve which in turn deter-
mines the proper idle speed. Rotate the
screw clockwise to increase engine idle
speed and counterclockwise to decrease
engine idle speed.
In-Line Fuel Filter
Yamaha recommends that the in-line fuel
filter be checked once a month. The filter
is located in the fuel hose between the gas
tank and fuel pump. The only cleaning
possible is to back-flush the filter using
clean gasoline. To check, clean, or replace
the filter, use the following procedure:
ZR-093A
1. Using a suitable hose clamping pli-
ers, pinch off the fuel hose between
the gas tank and the filter.
2. Remove and discard the clamps;
then slowly remove the fuel hoses
from the fuel filter. Dispose of the
excess fuel from the filter properly.
3. Install the in-line fuel filter in the
fuel hose so the arrow on the filter
points toward the fuel pump. Make
sure the fuel hoses fit tightly on the
filter. If a fuel hose does not fit
tightly, cut 6 mm (1/4 in.) from the
end of the fuel hose; then install on
the filter. Install new clamps and
remove the clamping pliers.
! WARNING
Whenever any maintenance or
inspection is made on a fuel system
when there may be fuel leakage,
there should be no welding, smok-
ing, open flames, etc., in the area.
CAUTION
The fuel hoses must fit tightly on the
fuel filter. If the fuel hose length
doesn’t permit this procedure, replace
the fuel hose. Also, after installing the
fuel hoses on the filter, check to be
sure that the fuel hoses do not con-
tact any hot or rotating components.