2007 YAMAHA YZ85 oil change

SAFETY INFORMATION
1-3
1Gasoline and exhaust gas


GASOLINE IS HIGHLY FLAMMA-
BLE:
Be sure to always use a fresh
mixture of oil and gasoline.
Always turn the engine off when
refueling.
Take care not to spill any gaso-
line on the engine or exhaust
pipe/muffler when refueling.
Never refuel while smoking or in
the vicinity of an open flame.


Never start the engine or let it run
for any length of time in a closed
area. The exhaust fumes are poi-
sonous and may cause loss of
consciousness and death within a
short time. Always operate your
motorcycle in an area that has ad-
equate ventilation.


Always turn the engine off before
leaving the motorcycle unattend-
ed. When parking the motorcycle,
note the following:
The engine and exhaust
pipe/muffler may be hot, there-
fore, park the motorcycle in aplace where pedestrians or chil-
dren are not likely to touch these
hot areas.
Do not park the motorcycle on a
slope or soft ground, otherwise it
may fall over.
Do not park the motorcycle near
a flammable source (e.g., a ker-
osene heater, or near an open
flame), otherwise it could catch
fire.


When transporting the motorcycle
in another vehicle, make sure that
it is kept upright and that the fuel
cock is turned to “OFF”. If the
motorcycle should lean over, gas-
oline may leak out of the carbure-
tor or fuel tank.


If you should swallow any gaso-
line, inhale a lot of gasoline vapor,
or allow gasoline to get into your
eyes, see your doctor immediately.
If any gasoline spills on your skin
or clothing, immediately wash the
affected area with soap and water
and change your clothes.
U5PA85E0.book Page 3 Thursday, April 13, 2006 3:06 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
√
5
*CylinderCheck cylinder for score marks or wear.
Clean.√
Replace.√ NO. ITEM ROUTINEAfter
break-inEvery
raceEvery
third raceEvery
fifth raceAs
required
6*ClutchCheck clutch housing, friction plates, clutch plates
and clutch springs for wear or damage.
Adjust.√ √
Replace.√
7*TransmissionChange the transmission oil.√
Check transmission for damage.√
Replace bearings.√
8*Shift forks, guide bars,
shift cam Replace if necessary. Check all parts for wear and damage.
√
9*Rotor nut
(flywheel magneto)Tighten.√√√
10*Kickstarter systemCheck idle gear for damage.
√
Replace if necessary.
11*Exhaust system Check exhaust pipe and muffler for carbon deposits.√ √
Clean.√
√
√ √
√ 12*CrankshaftCheck crankshaft for carbon deposits and damage.
Clean.
U5PA85E0.book Page 3 Thursday, April 13, 2006 3:06 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
6 2. Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
NOTE:
If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-fied torque as soon as possible.
4. Install the spark plug cap.
EAU41441
Transmission oil The transmission oil must be checked
for oil leakage before each ride. If any
leakage is found, have a Yamaha deal-
er check and repair the motorcycle. In
addition, the transmission oil must be
changed at the intervals specified in the
periodic maintenance and lubrication
chart.
1. Start the engine, warm it up for
several minutes, and then turn it
off.
2. Place the motorcycle on a level
surface and hold it in an upright po-
sition.
3. Place an oil pan under the trans-
mission to collect the used oil.
4. Remove the oil filler cap and drain
bolt to drain the oil from the trans-
mission.5. Install the transmission oil drain
bolt, and then tighten it to the spec-
ified torque.
6. Add the specified amount of the
recommended transmission oil,
and then install and tighten the oil
filler cap.
Tightening torque:
Spark plug:
20 Nm (2.0 m·kgf, 14 ft·lbf)
1. Oil filler cap
2. Transmission oil drain bolt
Tightening torque:
Transmission oil drain bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Recommended transmission oil:
See page 8-1.
Oil change quantity:
0.50 L (0.53 US qt) (0.44 Imp.qt)
chapter6 Page 9 Tuesday, April 18, 2006 10:03 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-10
6
CAUTION:
ECA10452


In order to prevent clutch slip-
page (since the transmission oil
also lubricates the clutch), do
not mix any chemical additives.
Do not use oils with a diesel
specification of “CD” or oils of a
higher quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.


Make sure that no foreign mate-rial enters the transmission.
7. Start the engine, and then let it idle
for several minutes while checking
the transmission for oil leakage. If
oil is leaking, immediately turn the
engine off and check for the cause.
EAU20070
Coolant The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAUM1291
To check the coolant level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
WARNING
EWA10380
Never attempt to remove the radiatorcap when the engine is hot.
2. Remove the radiator cap and
check the coolant level in the radi-
ator.
NOTE:

The coolant level must be checked
on a cold engine since the level
varies with engine temperature.


Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to theside can result in a false reading.
NOTE:The coolant should be at the brim of the
radiator filler. The level will change withvariation of engine temperature.1. Radiator cap
chapter6 Page 10 Tuesday, April 18, 2006 10:03 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-20
6
EAU22730
Changing the brake fluid Have a Yamaha dealer change the
brake fluid at the intervals specified in
the NOTE after the periodic mainte-
nance and lubrication chart. In addition,
have the oil seals of the master cylin-
ders and calipers as well as the brake
hoses replaced at the intervals listed
below or whenever they are damaged
or leaking.

Oil seals: Replace every two
years.


Brake hoses: Replace every four
years.
EAU22760
Drive chain slack The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU41410
To check the drive chain slack
1. Install the removable sidestand
and place the motorcycle on it.NOTE:When checking and adjusting the drive
chain slack, there should be no weighton the motorcycle.
2. Shift the transmission into the neu-
tral position.
3. Move the rear wheel by pushing
the motorcycle to locate the tight-
est portion of the drive chain, and
then measure the drive chain slack
as shown.4. If the drive chain slack is incorrect,
adjust it as follows.
EAU41480
To adjust the drive chain slack
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
2. To tighten the drive chain, turn the
adjusting bolt on each side of the
swingarm in direction (a). To loos-
en the drive chain, turn the adjust-
ing bolt on each side of the
swingarm in direction (b), and then
push the rear wheel forward.
Drive chain slack:
35.0–45.0 mm (1.38–1.77 in)
1. Drive chain slack
U5PA85E0.book Page 20 Thursday, April 13, 2006 3:06 PM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
YZ85 1818 mm (71.6 in)
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)(
FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)(
SWE)
YZ85 1821 mm (71.7 in) (ZAF)
YZ85LW 1903 mm (74.9 in)
YZ85LWW 1903 mm (74.9 in)
YZ85W 1818 mm (71.6 in)
YZ85W1 1818 mm (71.6 in)
Overall width:
758 mm (29.8 in)
Overall height:
YZ85 1161 mm (45.7 in)
YZ85LW 1205 mm (47.4 in)
YZ85LWW 1205 mm (47.4 in)
YZ85W 1161 mm (45.7 in)
YZ85W1 1161 mm (45.7 in)
Seat height:
YZ85 864 mm (34.0 in)
YZ85LW 904 mm (35.6 in)
YZ85LWW 904 mm (35.6 in)
YZ85W 864 mm (34.0 in)
YZ85W1 864 mm (34.0 in)
Wheelbase:
YZ85 1255 mm (49.4 in)
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)(
FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)(
SWE)
YZ85 1258 mm (49.5 in) (ZAF)
YZ85LW 1286 mm (50.6 in)YZ85LWW 1286 mm (50.6 in)
YZ85W 1255 mm (49.4 in)
YZ85W1 1255 mm (49.4 in)
Ground clearance:
YZ85 351 mm (13.82 in)
YZ85LW 393 mm (15.47 in)
YZ85LWW 393 mm (15.47 in)
YZ85W 351 mm (13.82 in)
YZ85W1 351 mm (13.82 in)
Weight:With oil and fuel:
YZ85 71.0 kg (157 lb)
YZ85LW 73.9 kg (163 lb)
YZ85LWW 73.9 kg (163 lb)
YZ85W 71.0 kg (157 lb)
YZ85W1 71.0 kg (157 lb)Engine:Engine type:
Liquid cooled 2-stroke
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
84.7 cm³ (5.17 cu.in)
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 2-R
Transmission oil:Type:
YAMALUBE 4 (10W30) or SAE10W30 type
SE motor oil
Oil change quantity:
0.50 L (0.53 US qt) (0.44 Imp.qt)Cooling 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)Carburetor:Manufacturer:
KEIHIN
Type × quantity:
PWK28 x 1Spark plug (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 system:
Spur gear
U5PA85E0.book Page 1 Thursday, April 13, 2006 3:06 PM