Rotax MMH-912 Series Maintenance Manual page 94

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Propeller shock load - Inspection of crankshaft distortion on installed

See Figs. 72-21/1 to 72-21/3

(A) Carefully mount holder (1) for protractor (2) part no. 877520 onto the

crankshaft .

■ CAUTION: Do not damage the crankshaft.

(B) Install the metal sheet (3) with allen screw M6x20 (4) between drive sleeve

and roller bearing.

Effectivity 912/914 Series

Edition 1 / Rev. 3

BRP-Powertrain

Maintenance Manual

The inspection of the crankshaft only makes sense if the shaft

runout of the crankshaft AS or MS is less than 0.080 mm (0.0031

Make sure that the upper spark plugs have been removed.

On all 4 cylinders the piston stopper has to be installed in the

upper spark plug thread.

Make sure that the piston stopper has been screwed in com-

pletely - so that it is bottomed out in with the spark plug hole.

Fig. 72-21/1

October 01/2010

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Mmh-914 series