Install clip (1) on new guide tube.
Drive guide tube into crankcase.
Keeping to distance A of 20 mm (0.787") is essential.
Caution! When checking oil levels the grip eyelet of the
oil dipstick must always face forward as seen in the driving direction.
Non-conformance will mean that the measured level is wrong, i.e. the
engine oil capacity does not meet specifications¹.

¹ See specifications