Yamaha VINO YJ50RR, Owner'S Manual

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3-8
Your Yamaha engine has been
designed to use regular unleaded
gasoline with a pump octane number
[(R+M)/2] of 86 or higher, or a
research octane number of 91 or
higher. If knocking (or pinging)
occurs, use a gasoline of a different
brand or premium unleaded fuel. Use
of unleaded fuel will extend spark
plug life and reduce maintenance
costs.
Gasohol
There are two types of gasohol:
gasohol containing ethanol and that
containing methanol. Gasohol con-
taining ethanol can be used if the
ethanol content does not exceed
10%. Gasohol containing methanol is
not recommended by Yamaha
because it can cause damage to the
fuel system or vehicle performance
problems.
INSTRUMENT AND CONTROL FUNCTIONS
3
1. Remove the 2-stroke engine oil
tank cap cover as shown.
2. Remove the 2-stroke engine oil
tank cap and add the recom-
mended oil.
3. Install the 2-stroke engine oil
tank cap and tank cap cover.
NOTE:
Make sure that the 2-stroke engine
oil tank cap is properly installed.
2
a
b
1
1. 2-stroke engine oil tank cap
2. 2-stroke engine oil tank cap cover
a. Unlock.
b. Lock.
EAU03969
2-stroke engine oil
Make sure that there is sufficient oil in
the 2-stroke engine oil tank. If neces-
sary, add the recommended 2-stroke
engine oil as follows.
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