Repair manual

6 Disassembly

49 Cylinder/Crankshaft

6. Unscrew the decompression valve (1) and check the valve seat as well as the

bore in the cylinder (2) for dirt.

7. Replace the dirty decompression valve (1). Carefully clean the bore.

8. Remove the woodruff key (11).

9. Unscrew the 4 screws (15) from the crankcase half (13).

Note: A slip fit is located between the crankshaft (10) and the ball bearing (8)

on the magnet side (MS). For this reason, always remove the "MS"

first.

10. Carefully separate the two crankcase halves (9,13) by using a plastic mallet (x).

11. Remove the rotary shaft seal (14).

12. To remove the ball bearings (8), always heat the crankcase halves (9,13) to ap-

prox. 100 to 120 °C (industrial dryer).

13. Pull off the ball bearings (8) from the crankshaft (10).