Safety information
2-3
2
soning, leave the area immediately, get
fresh air, and SEEK MEDICAL TREAT-
MENT.
Do not run engine indoors. Even if
you try to ventilate engine exhaust
with fans or open windows and
doors, carbon monoxide can rap-
idly reach dangerous levels.
Do not run engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or car-
ports.
Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors.
Loa din g
Adding accessories to your motorcycle
can adversely affect stability and han-
dling if the weight distribution of the
motorcycle is changed. To avoid the
possibility of an accident, use extreme
caution when adding accessories to
your motorcycle. Use extra care when
riding a motorcycle that has added ac-
cessories. Here are some general
guidelines to follow if adding accesso-
ries to your motorcycle: Operation of an overload
ed vehicle
coul d cause an acci dent.
The weight of the operator must
not exceed 62.0 kg (137 lb).
Accessory weight should be kept
as low and close to the motorcy-
cle as possible. Securely pack
your heaviest items as close to the
center of the vehicle as possible
and make sure to distribute the
weight as evenly as possible on
both sides of the motorcycle to
minimize imbalance or instability.
Shifting weights can create a sud-
den imbalance. Make sure that
accessories are securely attached
to the motorcycle before riding.
Check accessory mounts fre-
quently.
• Properly adjust the suspension for your load (suspension-ad-
justable models only), and
check the condition and pres-
sure of your tires.
• Never attach any large or heavy items to the handlebar, front
fork, or front fender. Genuine Yamaha Accessories
Choosing accessories for your vehicle
is an important decision. Genuine
Yamaha accessories, which are avail-
able only from a Yamaha dealer, have
been designed, tested, and approved
by Yamaha for use on your vehicle.
Many companies with no connection
to Yamaha manufacture parts and ac-
cessories or offer other modifications
for Yamaha vehicles. Yamaha is not in
a position to test the products that
these aftermarket companies produce.
Therefore, Yamaha can neither en-
dorse nor recommend the use of ac-
cessories not sold by Yamaha or
modifications not specifically recom-
mended by Yamaha, even if sold and
installed by a Yamaha dealer.
Aftermarket Parts, Accessories, an
d
Mo difications
While you may find aftermarket prod-
ucts similar in design and quality to
genuine Yamaha accessories, recog-
nize that some aftermarket accesso-
ries or modifications are not suitable
because of potential safety hazards to
you or others. Installing aftermarket
UB4B83E0.book Page 3 Thursday, September 9, 2021 8:47 AM
Safety information
2-4
2products or having other modifications
performed to your vehicle that change
any of the vehicle’s design or operation
characteristics can put you and others
at greater risk of serious injury or
death. You are responsible for injuries
related to changes in the vehicle.
Keep the following guidelines in mind,
as well as those provided under “Load-
ing” when mounting accessories.
Never install accessories that
would impair the performance of
your motorcycle. Carefully inspect
the accessory before using it to
make sure that it does not in any
way reduce ground clearance or
cornering clearance, limit suspen-
sion travel, steering travel or con-
trol operation.
• Accessories fitted to the han- dlebar or the front fork area can
create instability due to improp-
er weight distribution. If acces-
sories are added to the
handlebar or front fork area,
they must be as lightweight as
possible and should be kept to
a minimum. • Bulky or large accessories may
seriously affect the stability of
the motorcycle. Wind may at-
tempt to lift the motorcycle, or
the motorcycle may become
unstable in cross winds.
• Certain accessories can dis- place the operator from his or
her normal riding position. This
improper position limits the
freedom of movement of the
operator and may limit control
ability, therefore, such accesso-
ries are not recommended.
Use caution when adding electri-
cal accessories. If electrical ac-
cessories exceed the capacity of
the motorcycle’s electrical sys-
tem, an electric failure could re-
sult, which could cause a
dangerous loss of lights or engine
power.
Aftermarket Tires an d Rims
The tires and rims that came with your
motorcycle were designed to match
the performance capabilities and to
provide the best combination of han-
dling, braking, and comfort. Other tires, rims, sizes, and combinations
may not be appropriate. Refer to page
7-14 for tire specifications and more in-
formation on replacing your tires.
Transportin
g the Motorcycle
Be sure to observe following instruc-
tions before transporting the motorcy-
cle in another vehicle. Remove all loose items from the
motorcycle.
Check that the fuel cock (if
equipped) is in the “OFF” position
and that there are no fuel leaks.
Point the front wheel straight
ahead on the trailer or in the truck
bed, and choke it in a rail to pre-
vent movement.
Shift the transmission in gear (for
models with a manual transmis-
sion).
Secure the motorcycle with tie-
downs or suitable straps that are
attached to solid parts of the mo-
torcycle, such as the frame or up-
per front fork triple clamp (and not,
for example, to rubber-mounted
handlebars or turn signals, or
parts that could break). Choose
UB4B83E0.book Page 4 Thursday, September 9, 2021 8:47 AM
Specifications
9-1
9
Dimensions:Overall length:1820 mm (71.7 in) (YZ85, YZ85N)
1895 mm (74.6 in) (YZ85LW, YZ85LWN)
Overall width: 760 mm (29.9 in)
Overall height:
1135 mm (44.7 in) (YZ85, YZ85N)
1175 mm (46.3 in) (YZ85LW, YZ85LWN)
Seat height:
840 mm (33.1 in) (YZ85, YZ85N)
885 mm (34.8 in) (YZ85LW, YZ85LWN)
Wheelbase:
1255 mm (49.4 in) (YZ85, YZ85N)
1285 mm (50.6 in) (YZ85LW, YZ85LWN)
Ground clearance:
320 mm (12.60 in) (YZ85, YZ85N)
360 mm (14.17 in) (YZ85LW, YZ85LWN)Wei ght:Curb weight:
73 kg (161 lb) (YZ85, YZ85N)
75 kg (165 lb) (YZ85LW, YZ85LWN)
Maximum rider weight: 62.0 kg (137 lb)Engine:Combustion cycle:
2-stroke
Cooling system: Liquid cooled
Number of cylinders: Single cylinder
Displacement:
85 cm³ Bore
× stroke:
47.5 × 47.8 mm (1.87 × 1.88 in)
Starting system: Kickstarter
Engine oil:Engine oil:
YAMALUBE 2R
Recommended brand:Transmission oil:Type: Motor oil SAE 10W-40 type SG or higher
Quantity:
0.50 L (0.53 US qt, 0.44 Imp.qt)Coolant quantity:Radiator (including all routes):0.50 L (0.53 US qt, 0.44 Imp.qt)Fuel:Recommended fuel:Unleaded gasoline (E10 acceptable)
Octane number (RON): 98
Fuel tank capacity:
5.0 L (1.3 US gal, 1.1 Imp.gal)Car buretor:Type × quantity:
PWK28 × 1
Drivetrain:Gear ratio:
1st:
2.455 (27/11)
2nd: 1.882 (32/17)
3rd:
1.529 (26/17)
4th: 1.294 (22/17)
5th: 1.130 (26/23)
6th:
1.000 (25/25)Front tire:Type:With tube
Size:
70/100-17 40M (YZ85, YZ85N)
70/100-19 42M (YZ85LW, YZ85LWN)
Manufacturer/model:
DUNLOP/MX3SFRear tire:Type: With tube
Size:
90/100-14 49M (YZ85, YZ85N)
90/100-16 52M (YZ85LW, YZ85LWN)
Manufacturer/model:
DUNLOP/MX3SFront brake:Type:
Hydraulic single disc brake
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