Specifications - Yamaha YZ85Y Owner's Manual

Dimensions:
Overall length:
1821 mm (71.7 in)
Overall width:
758 mm (29.8 in)
Overall height:
1161 mm (45.7 in)
Seat height:
864 mm (34.0 in)
Wheelbase:
1258 mm (49.5 in)
Ground clearance:
351 mm (13.82 in)
Weight:
With oil and fuel:
71.0 kg (157 lb)
Engine:
Engine type:
Liquid cooled 2-stroke
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
84.7 cm³
Bore × stroke:
47.5 × 47.8 mm (1.87 × 1.88 in)
Compression ratio:
8.20 :1
Starting system:
Kickstarter
Lubrication system:
Premix
Engine oil:
Type:
YAMALUBE 2-R
Transmission 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 element
Fuel:
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 1
Spark plug (s):
Manufacturer/model:
NGK/BR10EG
Spark plug gap:
0.5–0.6 mm (0.020–0.024 in)
Clutch:
Clutch type:
Wet, multiple-disc
Transmission:
Primary reduction system:
Spur gear
Primary reduction ratio:
65/18 (3.611)
9-1

SPECIFICATIONS

Secondary reduction system:
Chain drive
Secondary reduction ratio:
47/14 (3.357)
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:
26.30 °
Trail:
88.0 mm (3.46 in)
Front tire:
Type:
With tube
Size:
70/100-17 40M
9