Westerbeke 6.5KW Technical Manual page 58

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3. Insert the piston into the cylinder block, ensuring that "F" mark
stamped on the piston is facing toward the cra·nkshaft pulley end
(engine front). Use a suitable piston ring compressor.
4. Insert main bearings on the
block insur ing the bear ing oil
ports are properly aligned.
·r"'-~·
5. Install the upper thrustwashers with the groove in the washer
being directed outward (crankshaft thrust side).
6. Crankshaft.
Be careful that the thrustwashers do not drop as the crankshaft
settles in place.
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