Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 281Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 281

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TESTING POWER TRIM PUMP WITH TEST GAUGE KIT (91-52914A3)

PumpDown" Pressure 1 OpenDown" port valve and closeUp" port valve
IMPORTANT: Make sure that battery (used to operate pump) i

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