4
INTRODUCTION
betamotor.com
Assembly
Component
Qty Thread lock Torque (Nm)
Valvegear group
Valve adjuster covers
Bolt M6x16
4
10
Camshaft sprocket
Screw M6x10
2
10
Water pump cover
Screw M6x20
3
10
Carburettor flange
Bolt M6x16
2
10
Exhaust flange
Screw M6x15
4
10
Movable guide
Bolt M6x12
1
X
10
Camchain tensioner
Bolt M6x16
2
8
Water circuit bleed screw
Screw M6x12
1
8
Water circuit drain screw
Screw M6x12
1
8
Rocker spindle plug
M16x1
2
10
Valve adjuster locknut
Nut M6x0.75
4
11
Cylinder head cover
Bolt M6x35
4
10
Bolt M6x25
2
10
Bolt M6x55
4
10
Head – Cylinder
Bolt M6x25
1
10
Crankshaft group
Crankshaft half, clutch side
Nut M18x1.5
1
150
Crankshaft half, flywheel side
Nut M14x1.5
1
120
TDC locking bolt
Special bolt M8
1
25
Crankcase group
RH crankcase – LH crankcase
Bolt M6x45
2
10
Bolt M6x60
9
10
RH crankcase – Clutch casing
Bolt M6x25
7
10
Bolt M6x55
1
10
Bolt M6x30
2
10
Selector drum bearing retaining bolt
Bolt M6x10
2
X
10
Flywheel cover
Bolt M6x30
5
10
Bolt M6x35
2
10
Clutch cover
Screw M6x20
4
10
Head – Cylinder – Crankcase
Stud M10x1.25
4
X
30
Nut M10x1.25
4
30
Oil drainplug
M16x1.25
1
20
Oil level plug
M16x1.5
1
10
Retaining plate Corteco
Special screw M4x8
2
X
3
Oil circuit jet
M5x0.75
2
6
Ignition/Starting group
Pickup retaining bolt
Bolt M6x12
2
8
Stator retaining screw
Screw M5x25
3
6
Ramp
Bolt M6x20
2
X
8
Kickstart pivot retaining bolt
Bolt M8x20
1
25
Sparkplug
M10x1
1
10-12
Gearchange group
Detent cam
Bolt M6x35
1
X
10
Oil pump group
Cover, oil pump LH
Screw M6x14
2
10
Cover, oil pump RH
Screw M6x20
1
10
Screw M6x15
1
10