13 Motore
1. General information
USE AND MAINTENANCE MANUAL
CHAPTER 1
GENERAL INFORMATION
2-Strokes - Edition 01 / 2023
30
Tightening torque tables (XX 250 version)
Engine
“
◊
” = marked portion shall be checked for torque tightening after break-in or before each race.
Elemento
Filettatura Quantità
Coppia di serraggio
Osservazioni
Spark plug
M14S
1
20 N·m (2.0 kgf·m, 15 lb·ft)
Cylinder head (nut)
M8
6
25 N·m (2.5 kgf·m, 18 lb·ft)
Cylinder head (stud)
M8
6
13 N·m (1.3 kgf·m, 9.6 lb·ft)
Cylinder (nut)
M10
4
42 N·m (4.2 kgf·m, 31 lb·ft)
Cylinder (stud)
M10
4
13 N·m (1.3 kgf·m, 9.6 lb·ft)
Power valve holder 2
M5
2
6 N·m (0.6 kgf·m, 4.4 lb·ft)
Link rod screw
M5
2
6 N·m (0.6 kgf·m, 4.4 lb·ft)
Push rod bolt
M5
1
4.5 N·m (0.45 kgf·m, 3.3 lb·ft)
Thrust plate screw
M5
1
6 N·m (0.6 kgf·m, 4.4 lb·ft)
Side holder screw
M5
4
4.0 N·m (0.40 kgf·m, 3.0 lb·ft)
Power valve link lever bolt
M4
1
4.0 N·m (0.40 kgf·m, 3.0 lb·ft)
Pulley bolt
M4
2
4.0 N·m (0.40 kgf·m, 3.0 lb·ft)
Power valve cover screw
M5
4
4.0 N·m (0.40 kgf·m, 3.0 lb·ft)
Governor fork screw
M4
2
5 N·m (0.5 kgf·m, 3.7 lb·ft)
Power valve housing bolt
M5
4
4.5 N·m (0.45 kgf·m, 3.3 lb·ft)
Impeller
M8
1
14 N·m (1.4 kgf·m, 10 lb·ft)
Water pump housing cover bolt
M6
4
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Coolant drain bolt
M6
1
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Radiator bolt
M6
4
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Radiator guard bolt
M6
2
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Radiator hose clamp
M6
8
1.5 N·m (0.15 kgf·m, 1.1 lb·ft)
Air filter element
M6
1
2.0 N·m (0.20 kgf·m, 1.5 lb·ft)
Carburetor joint bolt
M6
5
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Air filter case bolt
◊
M6
2
8 N·m (0.8 kgf·m, 5.9 lb·ft)
Air filter guide clamp
M5
1
3.5 N·m (0.35 kgf·m, 2.6 lb·ft)
Reed valve screw
M3
4
1.0 N·m (0.10 kgf·m, 0.73 lb·ft)
Locknut (throttle cable handlebar side)
M8
1
7 N·m (0.7 kgf·m, 5.2 lb·ft)
Locknut (throttle cable carburetor side)
M6
1
4.0 N·m (0.40 kgf·m, 3.0 lb·ft)
Exhaust pipe bolt (front)
◊
M6
1
14 N·m (1.4 kgf·m, 10 lb·ft)
Exhaust pipe bolt (rear)
◊
M6
1
12 N·m (1.2 kgf·m, 8.9 lb·ft)
Exhaust pipe stay bolt (front)
◊
M8
1
25 N·m (2.5 kgf·m, 18 lb·ft)
Exhaust pipe stay bolt (rear)
◊
M6
1
12 N·m (1.2 kgf·m, 8.9 lb·ft)
Silencer bolt
◊
M6
2
12 N·m (1.2 kgf·m, 8.9 lb·ft)
Fiber bolt
M6
4
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Crankcase bolt
M6
11
14 N·m (1.4 kgf·m, 10 lb·ft)
Crankcase cover screw (left)
M6
5
5 N·m (0.5 kgf·m, 3.7 lb·ft)
Drive sprocket cover screw
M6
2
5 N·m (0.5 kgf·m, 3.7 lb·ft)
Crankcase cover screw (right)
M6
9
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Bearing plate cover screw (drive axle left)
M6
2
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Bearing plate cover bolt (main axle right)
M6
2
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Holder bolt
M6
2
10 N·m (1.0 kgf·m, 7.4 lb·ft)
