Removal Of Spark Plug; Removal Of Cylinder Head Cover And Combustion Chamber Insert; Removal Of Cylinder Head Cover; Removal Of Combustion Chamber Insert - Rotax 125 MAX DD2 Repair Manual

Removal of spark plug

➩ Unscrew the spark plug from its threaded
socket with the spanner SW 16.
✔ Visual inspection of the spark plug for
carbonization, oil fouling and discoloration of the
electrode.
Fig. 18 shows the most frequently found examples
of spark plug unserviceability, leading to
replacement.
1 = normal
2 = fouled
3 = insulator breakage
4 = melted electrode
5 = oil carbon / deposits
Removal of cylinder head cover and combustion
chamber insert
◆ Note:
If only the components in the
crankcase are to be replaced or
inspected, then the cylinder can be
removed, complete with the
peripheral components: The exhaust
socket, carburetor socket and outlet
slider remain installed.

Removal of cylinder head cover

➩ Free the cylinder head cover (Item.1) on
removing the 4 screws (Item 5) from the cylinder
(Item 2).
➩ Lift away the cylinder head cover, complete with
the shaped gasket (Item 3).

Removal of combustion chamber insert

➩ Free the combustion chamber insert (Item 6),
complete with spring washers, on removing the
5 hexagon head bolts (Item 8).
➩ Lift away the combustion chamber insert with
lower o-ring (Item 7) and upper o-ring (Item 10).
Page 19
Repair Manual 125 MAX DD2
Fig. 18
Fig. 19
Issue 01/2006