Valve adjustment

Valves:

Adjustment of the valve play is carried out with a cold engine with the following values:

Inlet valves: 0.3 mm

Outmost outlet valves (1&4): 0.7 mm

Middle outlet valves (2&3): 0.8 mm

The feeler gauge (marked 3-5-7) can be found in the tool kit.

It is no use to try with less play since burned valves sooner or later will be the result.

The inlet valves are automatically lubricated with the oil fumes sucked out from the crank case. The outlet valves should be lubricated every 1000-2000 km with a few drops of engine or graphite oil (a little more often during breaking in).

If the valves hang, they should be squirted with kerosene (not gasoline). - Mind the fire hazard! After that they are given a little engine oil (alterativly graphite oil).

Cam shaft adjustment:

When assembling the engine, the mark 'I' on the balance- (swing-) wheel should be seen by the markings in swing wheel housing (at the hole at the top of the swing wheel housing), when the specially shaped tooth is standing directly lined up with the marking inside in the cam shaft housing.

For engines with angled teeth on the cam shaft wheel, it is necessary, in order to get the correct placement of the marked tooth, to turn the cam shaft wheel approx. 1 tooth to the left (as seen from the front) before the cam shaft wheel is set in place. The tooth will then point outside the mark.

The top wheel of the dynamo is also marked in a similar way and this tooth should stand ouside the mark on the dynamo neck (the 'I'-mark on the swing wheel should still be on the markings of the cylinder block). The dynamo adjustment is not a necessity but ensures that the same teeth always engages eachother.