PERIODIC MAINTENANCE AND ADJUSTMENT
7-16
7
Be sure the valve stem is posi-
tioned straight. A tilted valve
stem indicates that the tire has
slipped from its original posi-
tion on the rim. Rotate the tire
so that the valve stem is posi-
tioned straight.
If the center tread depth reaches the
specified limit, if the tire has a nail or
glass fragments in it, or if the sidewall is
cracked, have a Yamaha dealer re-
place the tire immediately.
Tire information
This motorcycle is equipped with spoke
wheels and tube tires.
WARNING
EWA10461
The front and rear tires should be of
the same make and design, other-
wise the handling characteristics of
the vehicle may be different, which
could lead to an accident.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha Motor Co., Ltd.
WARNING
EWA14390
Have a Yamaha dealer replace
excessively worn tires. Operat-
ing the motorcycle with exces-
sively worn tires decreases
riding stability and can lead to
loss of control.
The replacement of all wheel-
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience.
It is not recommended to patch
a punctured tube. If unavoid-
able, however, patch the tube
very carefully and replace it as
soon as possible with a high-
quality product.
Minimum tire tread depth (front and
rear):
4.0 mm (0.16 in)
Front tire:
Size:
YZ85 70/100-17 40M
YZ85LW 70/100-19 42M
YZ85LWZ 70/100-19 42M
YZ85Z 70/100-17 40M
Manufacturer/model:
YZ85 DUNLOP/D739FA (ZAF)
YZ85 DUNLOP/D756F
(AUT)(BEL)(CHE)(DEU)(DNK)(ES
P)(FIN)(FRA)(GBR)(GRC)(IRL)(IT
A)(NLD)(NOR)(POL)(PRT)(SVN)(
SWE)
YZ85LW DUNLOP/D739FA (ZAF)
YZ85LW DUNLOP/D756F
(AUT)(BEL)(CHE)(DEU)(DNK)(ES
P)(FIN)(FRA)(GBR)(GRC)(IRL)(IT
A)(NLD)(NOR)(POL)(PRT)(SVN)(
SWE)
YZ85LWZ DUNLOP/D756F
YZ85Z DUNLOP/D756F
Rear tire:
Size:
YZ85 90/100-14 49M
YZ85LW 90/100-16 52M
YZ85LWZ 90/100-16 52M
YZ85Z 90/100-14 49M
Manufacturer/model:
DUNLOP/D756
U5PA88E0.book Page 16 Tuesday, June 9, 2009 8:44 AM
SPECIFICATIONS
9-2
9
Secondary reduction ratio:
YZ85 47/14 (3.357) (ZAF)
YZ85 48/14 (3.428)
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(ITA)(NLD)(NOR)
(POL)(PRT)(SVN)(SWE)
YZ85LW 52/14 (3.714)
YZ85LWZ 52/14 (3.714)
YZ85Z 48/14 (3.428)
Transmission type:
Constant mesh 6-speed
Operation:
Left foot operation
Gear ratio:
1st:
27/11 (2.454)
2nd:
32/17 (1.882)
3rd:
26/17 (1.529)
4th:
22/17 (1.294)
5th:
26/23 (1.130)
6th:
25/25 (1.000)Chassis:Frame type:
Semi double cradle
Caster angle:
YZ85 26.30 °
YZ85LW 27.00 °
YZ85LWZ 27.00 °
YZ85Z 26.30 °Trail:
YZ85 88.0 mm (3.46 in)
YZ85LW 106.0 mm (4.17 in)
YZ85LWZ 106.0 mm (4.17 in)
YZ85Z 88.0 mm (3.46 in)
Front tire:Type:
With tube
Size:
YZ85 70/100-17 40M
YZ85LW 70/100-19 42M
YZ85LWZ 70/100-19 42M
YZ85Z 70/100-17 40M
Manufacturer/model:
YZ85 DUNLOP/D739FA (ZAF)
YZ85 DUNLOP/D756F
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(ITA)(NLD)(NOR)
(POL)(PRT)(SVN)(SWE)
YZ85LW DUNLOP/D739FA (ZAF)
YZ85LW DUNLOP/D756F
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(ITA)(NLD)(NOR)
(POL)(PRT)(SVN)(SWE)
YZ85LWZ DUNLOP/D756F
YZ85Z DUNLOP/D756FRear tire:Type:
With tube
Size:
YZ85 90/100-14 49M
YZ85LW 90/100-16 52M
YZ85LWZ 90/100-16 52M
YZ85Z 90/100-14 49MManufacturer/model:
DUNLOP/D756
Tire air pressure (measured on cold
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
YZ85LW 19x1.40
YZ85LWZ 19x1.40
YZ85Z 17x1.40Rear wheel:Wheel type:
Spoke wheel
Rim size:
YZ85 14x1.60
YZ85LW 16x1.85
YZ85LWZ 16x1.85
YZ85Z 14x1.60Front brake:Type:
Single disc brake
Operation:
Right hand operation
Recommended fluid:
DOT 4Rear brake:Type:
Single disc brake
U5PA88E0.book Page 2 Tuesday, June 9, 2009 8:44 AM
