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Mercury OptiMax 250 Manual

Mercury OptiMax 250
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DIRECT FUEL INJECTION
Page 3B-58
90-888438 JUNE 2002
REASSEMBLY
1. Lubricate end cap O-ring and O-ring contact area in compressor body with two cycle
oil.
2. Slide the new end cap assembly into the compressor body, keeping the connecting
rod journal lined up with the open end of the connecting rod, until the crankshaft just
enters the open end of the connecting rod.
a
b
a-Connecting rod open end
b-Crankshaft connecting rod Journal
3. While rotating the pulley flange clockwise and counterclockwise, push the end cap
into the compressor. Continue rotating the flange until the end cap is all the way down
against the compressor body.
4. To confirm that the connecting rod journal has properly engaged with the connecting
rod, rotate the flange until you feel resistance from the piston trying to compress air
in the cylinder.
5. Apply Loctite 271 to the threads of the end cap retaining bolts and torque to 100 lb.
in. (11.5 Nm).
6. Apply Loctite 271 to the pulley retaining bolts. Torque to 170 lb. in. (19 Nm).
7. Install compressor/alternator belt.
8. Run engine to confirm that compressor is functioning correctly.

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Mercury OptiMax 250 Specifications

General IconGeneral
Engine TypeV6
Horsepower250 hp
Gear Ratio1.75:1
Starting SystemElectric Start
Alternator60 Amp
Shaft Length20", 25"

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