Specifications - Yamaha YZ65J Owner's Manual

Specifications

Dimensions:
Overall length:
1615 mm (63.6 in)
Overall width:
760 mm (29.9 in)
Overall height:
1000 mm (39.4 in)
Seat height:
755 mm (29.7 in)
Wheelbase:
1140 mm (44.9 in)
Ground clearance:
265 mm (10.43 in)
Weight:
Curb weight:
61 kg (134 lb)
Maximum rider weight:
50.0 kg (110 lb)
ngine:
Combustion cycle:
2-stroke
Cooling system:
Liquid cooled
Number of cylinders:
Single cylinder
Displacement:
65 cm³
Bore × stroke:
43.5 × 43.6 mm (1.71 × 1.72 in)
Compression ratio:
8.1–9.6 : 1
Starting system:
9
Kickstarter
Lubrication system:
Premix lubrication
Engine oil:
Engine oil:
YAMALUBE 2R
Recommended brand:
YAMALUBE
Transmission oil:
Type:
Motor oil SAE 10W-30 type SE or higher or
Gear oil SAE 85W GL-3
Quantity:
0.50 L (0.53 US qt, 0.44 Imp.qt)
Coolant quantity:
Radiator (including all routes):
0.38 L (0.40 US qt, 0.33 Imp.qt)
Air filter:
Air filter element:
Wet element
Fuel:
Recommended fuel:
Premium unleaded gasoline (Gasohol [E10]
acceptable)
Fuel tank capacity:
3.5 L (0.9 US gal, 0.8 Imp.gal)
Carburetor:
Type × quantity:
PWK28 × 1
Spark plug(s):
Manufacturer/model:
NGK/BR9ECM
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Clutch:
Clutch type:
Wet, multiple-disc
Drivetrain:
Primary reduction ratio:
3.611 (65/18)
Final drive:
Chain
Secondary reduction ratio:
3.357 (47/14)
Transmission type:
Constant mesh 6-speed
Gear ratio:
1st:
2.455 (27/11)
2nd:
1.882 (32/17)
3rd:
1.529 (26/17)
4th:
1.263 (24/19)
5th:
1.095 (23/21)
6th:
0.960 (24/25)
Chassis:
Frame type:
Semi double cradle
Caster angle:
26.4 °
Trail:
64 mm (2.5 in)
9-1