Yamaha YZ85 2021 Owner's Manual page 22

Instrument and control functions
4
1. 2-stroke engine oil
2. Gasoline
3. Container
Recommended fuel:
Premium unleaded gasoline (E10
acceptable)
Recommended 2-stroke engine oil:
YAMALUBE 2R
Fuel tank capacity:
5.0 L (1.3 US gal, 1.1 Imp.gal)
Mixing ratios (gasoline to oil):
Break-in period: 15:1
After break-in: 30:1
Why Yamalube
YAMALUBE oil is a Genuine YAMAHA
Part born of the engineers' passion
and belief that engine oil is an impor-
tant liquid engine component. We form
teams of specialists in the fields of me-
chanical engineering, chemistry, elec-
tronics and track testing, and have
them develop the engine together with
the oil it will use. Yamalube oils take full
advantage of the base oil's qualities
and blend in the ideal balance of addi-
tives to make sure the final oil clears
our performance standards. Thus,
Yamalube mineral, semisynthetic and
synthetic oils have their own distinct
characters and value. Yamaha's expe-
rience gained over many years of re-
search and development into oil since
the 1960's helps make Yamalube the
best choice for your Yamaha engine.
If the recommended 2-stroke engine
oil is not available, use an equivalent
high-quality oil.
4-4
NOTICE
Never mix two brands of 2-stroke
engine 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.
Gasoline
This model's engine is designed to use
premium unleaded gasoline with a
pump octane number [(R+M)/2] of 91
or higher, or a research octane number
(RON) of 95 or higher. If knocking or
pinging occurs, try a gasoline of a dif-
ferent brand.
NOTICE
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the piston rings as well as to
the exhaust system.
ECA15552
ECA15591