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Mercury V8 250 User Manual

Mercury V8 250
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Sensors, Actuators, Relays, and Accessories
Section 5B - Actuators and Relays
Table of Contents
Electronic Throttle Control (ETC).......................................5B-2
Overview.....................................................................5B-2
Troubleshooting the ETC............................................5B-2
Fuel Pump Relay............................................................... 5B-4
Main Power Relay (MPR).................................................. 5B-5
Start Relay......................................................................... 5B-6
Shift Actuator..................................................................... 5B-8
Shift Actuator Harness Connector Pin Out................. 5B-8
Shift Control................................................................ 5B-9
Shift Actuator Troubleshooting................................... 5B-9
Actuators and Relays
90-8M0146617 eng JULY 2018 © 2018 Mercury Marine Page 5B-1
5
B

Table of Contents

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Mercury V8 250 Specifications

General IconGeneral
Engine TypeV8
Horsepower250 HP
Displacement4.6L
Fuel Induction SystemElectronic Fuel Injection (EFI)
SteeringHydraulic Steering
Gear Ratio1.75:1
Cylinders8
StartingElectric Start
Full Throttle RPM Range5200-6000 RPM
Alternator Amp85 amp
Shaft Length25 in
Weight527 lbs
Fuel TypeUnleaded 87 octane minimum

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