Yamaha YZ450FA Automobile User Manual


 
2-8
MAINTENANCE SPECIFICATIONS
2nd ring:
Type Taper ----
Dimensions (B × T) 1.00 × 3.10 mm (0.04 × 0.12 in) ----
End gap (installed) 0.35–0.50 mm (0.014–0.020 in) 0.85 mm
(0.033 in)
Side clearance 0.020–0.060 mm (0.0008–0.0024
in)
0.120 mm
(0.0047 in)
Oil ring:
Dimensions (B × T) 1.5 × 2.55 mm (0.06 × 0.10 in) ----
End gap (installed) 0.20–0.50 mm (0.008–0.020 in) ----
Crankshaft:
Crank width "A" 61.95–62.00 mm (2.439–2.441 in) ----
Runout limit "C" 0.03 mm (0.0012 in) 0.05 mm
(0.002 in)
Big end side clearance "D" 0.15–0.45 mm (0.0059–0.0177 in) 0.50 mm
(0.02 in)
Small end free play "F" 0.4–1.0 mm (0.02–0.04 in) 2.0 mm
(0.08 in)
Balancer:
Balancer drive method Gear ----
Air filter oil grade: Foam-air-filter oil or equivalent oil ----
Clutch:
Friction plate thickness 2.92–3.08 mm (0.115–0.121 in) 2.8 mm
(0.110 in)
Quantity 8 ----
Clutch plate thickness 1.5–1.7 mm (0.059–0.067 in) ----
Quantity 7 ----
Warp limit ---- 0.1 mm
(0.004 in)
Item Standard Limit