2014 YAMAHA YZ85 gas type

INSTRUMENT AND CONTROL FUNCTIONS
4-4
4Your Yamaha engine has been de-
signed to use premium unleaded gas-
oline 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.
NOTICE
ECA15552
Never mix two
bran ds of 2-stroke
en gine oil in the same batch. Always
use the same type of oil to ensure
maximum en gine performance.
Shoul d it b e necessary to use a dif-
ferent oil bran d, b e sure to d rain the
fuel tank an d the car buretor float
cham ber of the ol d premixe d fuel
prior to fillin g with the new type.
Fillin g the fuel tank
Make sure there is sufficient gasoline in
the tank.
WARNING
EWA10882
Gasoline an d g asoline vapors are
extremely flamma ble. To avoi d fires
an d explosions an d to re duce the
risk of injury when refuelin g, follow
these instructions.1. Before refueling, turn off the en- gine and be sure that no one is sit-
ting on the vehicle. Never refuel
while smoking, or while in the vi-
cinity of sparks, open flames, or other sources of ignition such as
the pilot lights of water heaters
and clothes dryers.
2. Do not overfill the fuel tank. Stop filling when the fuel reaches the
bottom of the filler tube. Because
fuel expands when it heats up,
heat from the engine or the sun
can cause fuel to spill out of the
fuel tank.
3. Wipe up any spilled fuel immedi- ately. NOTICE: Immediately
wipe off spille d fuel with a clean,
d ry, soft cloth, since fuel may
d eteriorate painted surfaces or
plastic parts.
[ECA10072]
4. Be sure to securely close the fuel tank cap.
WARNING
EWA15152
Gasoline is poisonous an d can
cause injury or death. Han dle gaso-
line with care. Never siphon gasoline
b y mouth. If you shoul d swallow
some gasoline or inhale a lot of g as-
oline vapor, or g et some gasoline in
your eyes, see your doctor imme di-
ately. If g asoline spills on your skin,
1. Maximum fuel level
2. Fuel tank filler tube
U1SN82E0.book Page 4 Friday, June 7, 2013 3:51 PM

SPECIFICATIONS
9-1
9
Dimensions:Overall length:YZ85 1822 mm (71.7 in)
YZ85E 1822 mm (71.7 in)
YZ85LW 1900 mm (74.8 in)
YZ85LWE 1900 mm (74.8 in)
Overall width:
758 mm (29.8 in)
Overall height: YZ85 1161 mm (45.7 in)
YZ85E 1161 mm (45.7 in)
YZ85LW 1205 mm (47.4 in)
YZ85LWE 1205 mm (47.4 in)
Seat height: YZ85 864 mm (34.0 in)
YZ85E 864 mm (34.0 in)
YZ85LW 904 mm (35.6 in)
YZ85LWE 904 mm (35.6 in)
Wheelbase:
YZ85 1258 mm (49.5 in)
YZ85E 1258 mm (49.5 in)
YZ85LW 1286 mm (50.6 in)
YZ85LWE 1286 mm (50.6 in)
Ground clearance: YZ85 351 mm (13.82 in)
YZ85E 351 mm (13.82 in)
YZ85LW 393 mm (15.47 in)
YZ85LWE 393 mm (15.47 in)Wei ght:Curb weight:
YZ85 71 kg (157 lb)
YZ85E 71 kg (157 lb)
YZ85LW 73 kg (161 lb)
YZ85LWE 73 kg (161 lb)
Engine:Engine type:
Liquid cooled 2-stroke
Cylinder arrangement:
Single cylinder
Displacement: 84 cm³
Bore × stroke:
47.5 × 47.8 mm (1.87 × 1.88 in)
Compression ratio:
8.20 : 1
Starting system: Kickstarter
Lubrication system: PremixEngine oil:Type:
YAMALUBE 2RTransmission oil:Type:
YAMALUBE 4 (10W-40) or SAE 10W-40
Oil change quantity: 0.50 L (0.53 US qt, 0.44 Imp.qt)Coolin g system:Radiator capacity (including all routes):
0.54 L (0.57 US qt, 0.48 Imp.qt)Air filter:Air filter element:Wet elementFuel:Recommended fuel:Premium unleaded gasoline only
Fuel tank capacity: 5.0 L (1.32 US gal, 1.10 Imp.gal)
Car buretor:Type × quantity:
PWK28 x 1Spark plu g(s):Manufacturer/model:
NGK/BR10EG
Spark plug gap: 0.5–0.6 mm (0.020–0.024 in)Clutch:Clutch type:Wet, multiple-discTransmission:Primary reduction ratio:
3.611 (65/18)
Final drive: Chain
Secondary reduction ratio: YZ85 3.428 (48/14)
YZ85E 3.428 (48/14)
YZ85LW 3.714 (52/14)
YZ85LWE 3.714 (52/14)
Transmission type:
Constant mesh 6-speed
Operation: Left foot operation
Gear ratio: 1st:2.454 (27/11)
2nd: 1.882 (32/17)
3rd:
1.529 (26/17)
4th: 1.294 (22/17)
U1SN82E0.book Page 1 Friday, June 7, 2013 3:51 PM

SPECIFICATIONS
9-2
9
5th:1.130 (26/23)
6th: 1.000 (25/25)
Chassis:Frame type:Semi double cradle
Caster angle: YZ85 26.30 °
YZ85E 26.30 °
YZ85LW 26.90 °
YZ85LWE 26.90 °
Trail:
YZ85 88 mm (3.5 in)
YZ85E 88 mm (3.5 in)
YZ85LW 105 mm (4.2 in)
YZ85LWE 105 mm (4.2 in)Front tire:Type:With tube
Size:
YZ85 70/100-17 40M
YZ85E 70/100-17 40M
YZ85LW 70/100-19 42M
YZ85LWE 70/100-19 42M
Manufacturer/model: DUNLOP/MX51FRear tire:Type:
With tube Size:
YZ85 90/100-14 49M
YZ85E 90/100-14 49M
YZ85LW 90/100-16 52M
YZ85LWE 90/100-16 52M
Manufacturer/model: DUNLOP/MX51
Tire air pressure (measure d on col d
tires):
Front:
100 kPa (1.00 kgf/cm², 15 psi)
Rear:
100 kPa (1.00 kgf/cm², 15 psi)
Front wheel:Wheel type:Spoke wheel
Rim size:
YZ85 17x1.40
YZ85E 17x1.40
YZ85LW 19x1.40
YZ85LWE 19x1.40Rear wheel:Wheel type:Spoke wheel
Rim size:
YZ85 14x1.60
YZ85E 14x1.60
YZ85LW 16x1.85
YZ85LWE 16x1.85Front brake:Type:
Single disc brake
Operation:
Right hand operation Specified brake fluid:
DOT 4
Rear brake:Type:
Single disc brake
Operation: Right foot operation
Specified brake fluid: DOT 4Front suspension:Type:Telescopic fork
Spring/shock absorber type: Coil spring/oil damper
Wheel travel:
275.0 mm (10.83 in)Rear suspension:Type:Swingarm (link suspension)
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel: YZ85 282.0 mm (11.10 in)
YZ85E 282.0 mm (11.10 in)
YZ85LW 287.0 mm (11.30 in)
YZ85LWE 287.0 mm (11.30 in)Electrical system:Ignition system:
CDI
U1SN82E0.book Page 2 Friday, June 7, 2013 3:51 PM