Yamaha YZ85(W) Owner's Manual page 27

Your Yamaha engine has been de-
signed to use premium unleaded gaso-
line with a pump octane number
[(R+M)/2] of 91 or higher, or a research
octane number of 95 or higher. If
knocking (or pinging) occurs, use a
gasoline of a different brand.
If the recommended 2-stroke engine oil
is not available, use an equivalent oil.
CAUTION:
Never mix two brands of 2-stroke en-
gine oil in the same batch. Always
use the same type of oil to ensure
maximum engine performance.
Should it be necessary to use a dif-
ferent oil brand, be sure to drain the
fuel tank and the carburetor float
chamber of the old premixed fuel
prior to filling with the new type.
INSTRUMENT AND CONTROL FUNCTIONS
Filling the fuel tank
ECA15551
1. Fuel level
2. Fuel tank filler tube
Make sure that there is sufficient fuel in
the tank. Fill the fuel tank to the bottom
of the filler tube as shown.
WARNING
G Do not overfill the fuel tank, oth-
erwise it may overflow when the
fuel warms up and expands.
G
Avoid spilling fuel on the hot en-
gine.
CAUTION:
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted surfac-
es or plastic parts.
EWA10880
3-4
ECA10070
3