octane YAMAHA YZF-R1 2019 Owners Manual

Instrument and control functions
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TIP
This mark identifies the recom-
mended fuel for this vehicle as
specified by European regulation
(EN228).

Check that gasoline nozzle has thesame identifier when fueling.
Your Yamaha engine has been de-
signed to use premium unleaded gaso-
line with a research octane number of
95 or higher. If knocking (or pinging) oc-
curs, use a gasoline of a different
brand. Use of unleaded fuel will extend
spark plug life and reduce maintenance
costs.
Gasohol
There are two types of gasohol: gaso- hol containing ethanol and that contain-
ing methanol. Gasohol containing
ethanol can be used if the ethanol con-
tent does not exceed 10% (E10). Gas-
ohol containing methanol is not
recommended by Yamaha because it
can cause damage to the fuel system
or vehicle performance problems.
EAU80200
Fuel tank overflow hoseBefore operating the vehicle:
Check the fuel tank overflow hose
connection.

Check the fuel tank overflow hose
for cracks or damage, and replace
it if necessary.

Make sure that the end of the fuel
tank overflow hose is not blocked,
and clean it if necessary.

Make sure that the end of the fuel
tank overflow hose is positioned as
shown.
E5
E10
1. Clamp
2. Paint mark
3. Fuel tank overflow hose
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2
3
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