Robin EC12 - Piston Rings

6-49 PISTON RINGS
If an expander is unavailable, install the ring by placing the open ends of the ring on first land of piston,
then spread the ring only far enough to slip over the piston and into the correct groove.
CAUTION : 1) Be extremely careful not to distort and break the ring.
2) Put the open ends of piston rings to the lock pins in the grooves.
3) Assemble the rings in the order of the second ring and then top ring.
(This is to prevent the rings from rotation while operating the engine.)
Top ring .---.-...- Chromium plated surface (looks white silver in color)
Second ring ------ Parkerized surface (looks dark in color)
\
E
/
f"\
\
I Open Ends of Piston Ring
Fig. 6-3
lop ring
Key stone type
Chromium plated
Second ring
Plain type
Parkerlrized
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