EasyManuals Logo

Mercury V8 300 User Manual

Mercury V8 300
302 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #181 background imageLoading...
Page #181 background image
3. Remove the two M5 x 16 hex washer head screws that secure the throttle demand sensor to the underside of the throttle
and shift bracket, and remove the sensor.
Throttle and shift bracket, shown
removed for clarity
a - M5 x 16 hex washer head screws (2
per sensor, 4 total)
b - Throttle demand sensor
c - Shift demand sensor
Throttle Demand Sensor Installation
NOTE: Refer to previous illustrations as required.
1. Attach the throttle demand sensor to the underside of the throttle and shift bracket, using two M5 x 16 hex washer head
screws. Tighten the screws to the specified torque.
Description
Nm lb‑in. lb‑ft
M5 x 16 hex washer head screw 1.7 15 –
2. Route the throttle demand sensor harness between the throttle and shift bracket and the engine block.
a - Throttle and shift bracket
b - Shift demand sensor harness
c - Throttle demand sensor harness
3. Connect the throttle demand sensor harness to the engine harness. Use a cable tie to secure the connection to the engine
harness.
Trim Position Sensor
For information on the trim position sensor, refer to the appropriate section of this manual:
• Section 6C ‑ Conventional Midsection (CMS) Power Trim
• Section 6D ‑ Advanced Midsection (AMS) Power Trim
Water‑in‑Fuel (WIF) Sensor
IMPORTANT: SeaPro models are equipped with a vessel mounted water‑separating fuel filter that has a water‑in‑fuel (WIF)
sensor located on the filter drain knob. The engine mounted WIF sensor on SeaPro models is disconnected and is not used.
The water‑in‑fuel (WIF) sensor is a normally open switch with two highly conductive probes. Water completes a 5‑volt negative
reference to the PCM. When water is present, the PCM generates an error history and activates a warning horn to inform the
operator. If SmartCraft gauges are installed, the display will flash a visual warning to the operator.
a
a
b
c
67447
67448
a
b
c
Sensors
90-8M0146617 eng JULY 2018 © 2018 Mercury Marine Page 5A-43

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Mercury V8 300 and is the answer not in the manual?

Mercury V8 300 Specifications

General IconGeneral
Horsepower300 HP
Displacement4.6 L
Full Throttle RPM Range5200-6000 RPM
Fuel Induction SystemElectronic Fuel Injection (EFI)
Gear Ratio1.75:1
StartingElectric
Shaft Length20 in, 25 in, 30 in
Warranty3-Year Limited Warranty
Engine TypeV8
Fuel Type87 Octane
Bore x Stroke92 mm x 86 mm

Related product manuals