Yamaha MX775, Руководство по обслуживанию

Страница: 161 / 188

7-3
1
2
3
4
5
6
7
8
9
10
S
PECIFIC
A
T
IO
NS
MAINTENANCE SPECIFICATIONS
MAINTENANCE SPECIFICATIONS
ENGINE
Piston:
Piston-to-cylinder clearance 0.033–0.047 mm (0.0013–0.0019 in)
Limit 0.15 mm (0.0059 in)
Piston diameter 79.959–79.980 mm (3.1480–3.1488 in)
Limit 79.900 mm (3.1457 in)
Measuring point (from piston
skirt bottom) 6.0 mm (0.2362 in)
Oversize 1st 80.25 mm (3.1594 in)
2nd 80.50 mm (3.1693 in)
Piston pin hole inside diameter 19.004–19.015 mm (0.7482–0.7486 in)
Limit 19.045 mm (0.7498 in)
Piston pin:
Piston pin diameter 18.995–19.000 mm (0.7478–0.7480 in)
Limit 18.975 mm (0.7470 in)
Piston ring:
Top ring
Type Barrel
Dimensions 1.2

2.9 mm (0.0472

0.1142 in)
End gap (installed) 0.20–0.35 mm (0.0079–0.0138 in)
Limit 0.60 mm (0.0236 in)
Side clearance 0.04–0.08 mm (0.0016–0.0031 in)
Limit 0.13 mm (0.0051 in)
2nd ring
Type Taper
Dimensions 1.0

2.5 mm (0.0394

0.0984 in)
End gap (installed) 0.20–0.35 mm (0.0079–0.0138 in)
Limit 0.60 mm (0.0236 in)
Side clearance 0.03–0.07 mm (0.0012–0.0028 in)
Limit 0.13 mm (0.0051 in)
Oil ring
Type 3-piece type
Dimensions 2.0

2.5 mm (0.0787

0.0984 in)
End gap (installed) 0.20–0.70 mm (0.0079–0.0276 in)
Cylinder head:
Warpage limit 0.05 mm (0.002 in)
Cylinder:
Bore 80.000–80.020 mm (3.1496–3.1504 in)
Warpage limit 80.025 mm (3.1506 in)