engine YAMAHA YZ85 2010 Owner's Guide

SPECIFICATIONS
9-1
9
Dimensions:Overall length:
YZ85 1818 mm (71.6 in)
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(ITA)(NLD)(NOR)
(POL)(PRT)(SVN)(SWE)
YZ85 1821 mm (71.7 in) (ZAF)
YZ85LW 1903 mm (74.9 in)
YZ85LWZ 1903 mm (74.9 in)
YZ85Z 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)
YZ85LWZ 1205 mm (47.4 in)
YZ85Z 1161 mm (45.7 in)
Seat height:
YZ85 864 mm (34.0 in)
YZ85LW 904 mm (35.6 in)
YZ85LWZ 904 mm (35.6 in)
YZ85Z 864 mm (34.0 in)
Wheelbase:
YZ85 1255 mm (49.4 in)
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(ITA)(NLD)(NOR)
(POL)(PRT)(SVN)(SWE)
YZ85 1258 mm (49.5 in) (ZAF)
YZ85LW 1286 mm (50.6 in)
YZ85LWZ 1286 mm (50.6 in)
YZ85Z 1255 mm (49.4 in)Ground clearance:
YZ85 351 mm (13.82 in)
YZ85LW 393 mm (15.47 in)
YZ85LWZ 393 mm (15.47 in)
YZ85Z 351 mm (13.82 in)
Weight:With oil and fuel:
YZ85 71.0 kg (157 lb)
YZ85LW 73.9 kg (163 lb)
YZ85LWZ 73.9 kg (163 lb)
YZ85Z 71.0 kg (157 lb)Engine:Engine type:
Liquid cooled 2-stroke
Cylinder arrangement:
Forward-inclined 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 2-RTransmission oil:Type:
YAMALUBE 4 (10W-40) or SAE 10W-40
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: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
Primary reduction ratio:
65/18 (3.611)
Secondary reduction system:
Chain drive
U5PA88E0.book Page 1 Tuesday, June 9, 2009 8:44 AM

INDEX
AAir filter element, cleaning .................... 7-12BBrake and clutch levers, checking and
lubricating ........................................... 7-23
Brake fluid, changing ............................ 7-21
Brake fluid level, checking .................... 7-20
Brake lever ............................................. 4-2
Brake pedal ............................................ 4-2
Brake pedal, checking and
lubricating ........................................... 7-24CCables, checking and lubricating .......... 7-23
Carburetor, adjusting ............................ 7-14
Care ........................................................ 8-1
Clutch lever............................................. 4-1
Clutch lever free play, adjusting ........... 7-17
Coolant ................................................. 7-10DDrive chain, cleaning and lubricating .... 7-22
Drive chain slack .................................. 7-21EEngine break-in ...................................... 6-3
Engine idling speed .............................. 7-14
Engine, starting a warm .......................... 6-1
Engine stop button.................................. 4-1FFront and rear brake pads, checking .... 7-19
Front brake lever free play, checking ... 7-18
Front fork, adjusting ................................ 4-7
Front fork, bleeding................................. 4-9
Front fork, checking .............................. 7-25
Fuel......................................................... 4-3
Fuel cock ................................................ 4-5Fuel tank breather hose .......................... 4-5
Fuel tank cap........................................... 4-3
HHandlebar switch..................................... 4-1IIdentification numbers ........................... 10-1KKickstarter ............................................... 4-6LLabels, location .......................................1-1MMatte color, caution .................................8-1
Model label ............................................ 10-1PParking ....................................................6-4
Part locations .......................................... 3-1
Periodic maintenance and lubrication
chart ......................................................7-2RRear suspension, lubricating ................. 7-25SSafety information ...................................2-1
Seat ......................................................... 4-7
Shifting ....................................................6-2
Shift pedal ............................................... 4-1
Shift pedal, checking ............................. 7-19
Shock absorber assembly, adjusting ...... 4-9
Sidestand .............................................. 4-12
Spark plug, checking ...............................7-8
Specifications .......................................... 9-1
Starter (choke) knob................................ 4-6
Starting and warming up a cold engine ... 6-1
Steering, checking.................................7-26
Storage....................................................8-3Supporting the motorcycle .................... 7-26
Swingarm pivots, lubricating ................. 7-24
TThrottle cable free play, adjusting ......... 7-14
Throttle grip and cable, checking and
lubricating ........................................... 7-23
Tires ...................................................... 7-15
Transmission oil ...................................... 7-9
Troubleshooting .................................... 7-29
Troubleshooting charts ......................... 7-31VVehicle identification number ................ 10-1WWheel bearings, checking..................... 7-26
Wheel (front) ......................................... 7-27
Wheel (rear) .......................................... 7-28
Wheels .................................................. 7-17
U5PA88E0.book Page 1 Tuesday, June 9, 2009 8:44 AM