Valve drive - M21 engine
1 Camshaft
2 Plain bearing
3 rocker
4 Eccentric
5 Thumb screw
6 Nut
7 Retaining spring
8 Ball pin
9 intake valve
10 Exhaust valve
11 Spring cup
12 Valve spring
13 Oil deflector
14 Valve spring
15 Rusk
16 Oil line
17 O-ring
Valve drive - M20 engine
1 rocker shaft
2 Mounting plate
3 Spring cup
4 Valve spring
5 Valve spring
6 Oil cap
7 Upper spring cup
8 Rusk
9 Cork
10 Staple
11 Cork
12 Rocker
13 Bolt
14 Eccentric
15 Washer
16 Nut
17 Inlet valve
18 Exhaust valve