Piston And Piston Ring Combinations; Piston Installation - Mercury 200 OptiMax Jet Drive Service Manual

Powerhead
8. Verify the lockrings are properly seated in the piston grooves.
a
a - Lockring
b - Lockring installation tool
Lockring Installation Tool
Lockring Installation Tool

Piston and Piston Ring Combinations

a
a - Half keystone piston ring (1.4 mm [0.056 in.])
b - Enlarged view of piston ring grooves

Piston Installation

1. Before installing the new piston rings, check the ring gap by placing each ring in its respective cylinder and pushing the ring
12.7 mm (1/2 in.) into the cylinder using the piston.
2. Check the end gap of each piston ring with a feeler gauge. The end gap must be within specification. If the end gap is greater
than the specifications, check other piston rings until rings within the tolerance are found.
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b
b
b
8717
91‑77109A3
91‑93004A 2
8719
90-8M0050731 MAY 2011