124
Cylinder cover
1 cylinder cover assembly 2
cylinder cover gasket
3 intake valve 4 spark plug 5 exhaust valve 6
locating pin
（
Ф
10×14
）
7 valve spring gasket 8 valve spring 9 exhaust double end stud 10 valve oil seal
assembly 11 O ring
（
40×2.65
）
12 valve cover 13 gasket 14 acorn nut 15 valve rocker 16 rockshaft 17
camshaft assembly 18 washer 19 rocker spring 20 tappet adjusting screw 21 adjusting screw hold-down nut 22
valve spring cup 23 valve collet 24 intake double end stud 25 carburetor insulator 26 paper washer of carburetor
insulator 27adjusting shim on rocker 28camshaft platen 29 bolt M6×10 30 chain wheel cover assembly 31 bolt
M6×20 32 bolt M6×80 33 vacuum end bolt 34hexagon flange nut M6 35 camshaft chain wheel 36 bolt M8×16
37 O ring 38 drain plug
Note:
The cylinder cover bears
large bolt pretension to ensure
sealing between the cylinder
cover and the cylinder body.
Pretension: 50Nm
