Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 77Get this manual

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PROBLEM 1: Engine Idles and Stalls PROBLEM 2: Engine HesitateUpon AccelerationPROBLEM 3: Engine RunUneyen or Surges
Fuel Pump
DescriptionOperation
The fuel pumps are crankcase-pressu

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