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

TESTING POWER TRIM PUMP WITH TEST GAUGE KIT (91-52914A3)
IMPORTANT: Pertorm the six preceding checks before testing Power Trim pump with test gauge kitInstall test gauge as shown:

Test Gauge AssemblyUp" Port Hose and ValveDown" Port Hose and ValveUp" Port (Pump)Down" Port (Pump) Brass Fitting (Remove Irom Adaptor That is Supplied with Test Gauge Kit)

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