mxu 400 Workshop-manual : Page 53

                                                                      12. With the alignment pin installed in the camshaft
                                                                and the cam lobes directed down (toward the pis-
                                                                ton), place the camshaft in position and verify that
                                                                the timing mark on the magneto is visible through
                                                                the inspection plug and that the timing marks on
                                                                the camshaft sprocket are parallel with the valve
                                                                cover mating surface.
                                                             NOTE: When the camshaft assembly is seated,
                                                            make sure the alignment pin in the camshaft aligns
                                                            with the smallest hole in the sprocket.

                                                            13. With the alignment pin installed in the camshaft,
                                                  MD1270        loosely place the cam sprocket (with the recessed
                                                                side facing the camshaft lobes) onto the camshaft
 8. Install the two lower nuts securing the cylinder            and place it into position with the cam chain over
    head to the cylinder, one in front and one in rear.         the sprocket.




                                                                                                                       3


                                                  MD1192
                                                                                                             MD1359
 9. In a crisscross pattern, tighten the four cylinder      14. Place the C-ring into position in its groove in the
    head cap screws (from step 7) to 27.5 ft-lb.                cylinder head.
    Tighten the two lower cylinder head nuts (from
    step 8) to 20 ft-lb and the cylinder-to-crankcase
    nuts (from step 4) to 8 ft-lb.
10. With the timing inspection plug removed and the
    cam chain held tight, rotate the crankshaft until the
    piston is at top-dead-center.
11. While holding the cam chain sprocket to the side,
    install the rear cam chain tensioner guide into the
    cylinder head. Install the pivot cap screw and
    washer.


                                                                                                             MD1131

                                                             NOTE: At this point, oil the camshaft bearings,
                                                            cam lobes, and the three seating journals on the
                                                            cylinder head.

                                                              NOTE: Note the position of the alignment marks
                                                            on the end of the camshaft. They must be parallel
                                                            with the valve cover mating surface. If rotating the
                                                            camshaft is necessary for alignment, do not allow
                                                            the chain and sprocket to rotate and be sure the
                                                   CD383    cam lobes end up in the down position.

                                                            15. When the camshaft assembly is seated, ensure the
                                                                following.


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