Mercury Racing HP1075 SCi Dry Sump - User Manual

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Thank You

for your purchase of one of the finest marine power packages

available. It incorporates numerous design features to assure

operating ease and durability.

With proper care and maintenance, you will thoroughly enjoy using

this product for many boating seasons. To ensure maximum

performance and carefree use, we ask that you thoroughly read this

manual.

The Operation, Maintenance & Warranty Manual contains specific

instructions for using and maintaining your product. We suggest that

this manual remain with the product for ready reference whenever

you are on the water.

Again, thank you for purchasing one of our Mercury Marine products.

We sincerely hope your boating will be pleasant!

Mercury Racing,

N7480 County Road "UU"

Fond du Lac, WI 54935-9585

7406

Main Page

Questions and Answers

D
Deborah HaynesAug 1, 2025
What to do if my Mercury Racing HP1075 SCi Dry Sump will not crank?
- K
  kimberly17Aug 1, 2025
  If your Mercury Racing Engine won't crank, start by checking if the battery switch is turned "ON". Ensure the gearshift is in the neutral position. Inspect the circuit breaker and fuses, resetting the breaker or replacing the fuse if necessary. Examine all electrical connections and wires, particularly the battery cables, for looseness or dirt; clean and tighten any faulty connections. Test the battery and starter, replacing them if they are defective. Confirm the flywheel ring gear is not damaged and replace the flywheel if it is. Check if the engine can be rotated by hand with the spark plugs removed to determine if the engine is seized. Finally, test the ignition switch using a remote starter switch at the starter motor.

Summary

Mercury Marine Warranty Information

Warranty Registration United States And Canada

Process for registering warranty in the US and Canada.

Warranty Registration Outside The United States And Canada

Process for registering warranty outside the US and Canada.

Mercury Racing Demonstrator Policy

Policy for registering and transferring demonstrator units.

Transfer Of Warranty

Guidelines for transferring the limited warranty to a new owner.

Mercury RACING DIVISION 90 Day Limited Warranty

Details of the 90-day limited warranty coverage.

Warranty Coverage Conditions

Requirements for obtaining warranty coverage.

Mercurys Warranty Obligations

Mercury's obligations under the warranty.

How to Obtain Warranty Coverage

Steps for the customer to obtain warranty service.

What Is Not Covered By Warranty

List of items and conditions not covered by the limited warranty.

Warranty Disclaimers and Limitations

Legal disclaimers and limitations of the warranty.

Warranty Against Corrosion

Information regarding corrosion warranty for the engine.

General Information for Boat Operation

Engine Identification Record

Section to record engine model, serial number, and other identification details.

Engine Serial Number Locations

Explanation of where to find serial numbers for the engine and components.

Boaters Responsibilities

Outlines the operator's responsibilities for safe operation.

Pre-Operation Checks

Key safety and operating information to review before use.

Boat Horsepower Capacity Warnings

Warning about exceeding boat horsepower limits.

High-Speed and High-Performance Boat Operation

Recommendations for operating high-speed or high-performance boats.

Lanyard Stop Switch Function

Explanation of the purpose and function of the lanyard stop switch.

Protecting People In The Water

Safety precautions when people are in the water near the boat.

Exhaust Emissions and Carbon Monoxide

Information about carbon monoxide poisoning and ventilation.

Wave and Wake Jumping Hazards

Hazards associated with jumping waves or wakes.

Impact With Underwater Hazards

Safety advice for operating in shallow water with obstacles.

Trailering Boat Guidelines

Guidelines for trailering the boat with the drive unit.

Safe Boating Suggestions

General tips for safe boating practices and required equipment.

Reporting Stolen Power Packages

Procedure to follow if the power package is stolen.

Engine Specifications and Requirements

Fuel Requirements

Recommended fuel type and octane rating for the engine.

Using Reformulated Fuels

Information on using reformulated fuels containing oxygenates.

Fuel Containing Alcohol

Adverse effects of fuel containing alcohol on engine components.

Crankcase Oil Recommendations

Oil recommendations and important oil practices for the engine.

HP1075 SCi Engine Specifications

Key technical specifications for the HP1075 SCi engine.

Fluid Capacities

Fluid capacities for oil, cooling system, and transmission.

California Emissions Regulations

Information on emission control and exemption for the engine.

Engine Break-in Procedure

Procedures for breaking in the engine to ensure longevity.

After Break-In Period Recommendations

Recommendations for operation after the initial break-in period.

Engine Operation

Instrumentation Overview

Critical engine functions to monitor using instrumentation.

Warning System and Guardian System

Explanation of the Engine Guardian System and warning indicators.

Electrical System Overload Protection

Location and function of fuses and circuit breakers.

Remote Controls Operation

Operation of throttle and shift controls.

Power Trim System Operation

How to operate the power trim system for optimal boat angle.

Starting, Shifting, and Stopping Procedures

Procedures for starting, shifting gears, and stopping the engine.

Freezing Temperature Operation

Precautions for operating the boat in freezing temperatures.

Drain Plug and Bilge Pump

Importance of checking drain plugs and bilge pumps.

Launching and Boat Operation Care

Situations that can cause water entry into the engine.

Maintenance Procedures

Service Responsibilities

Owner/operator and dealer responsibilities for maintenance.

Replacement Service Parts

Importance of using correct replacement parts for marine engines.

Do-It-Yourself Maintenance Suggestions

Advice for owners performing their own maintenance.

Servicing High Horsepower Engines

Special considerations for servicing high-horsepower engines.

Maintenance Charts

Schedule of maintenance tasks and intervals.

Checking Fluid Levels

Procedures for checking engine oil and other fluid levels.

Changing Fluids

Procedures for changing various engine fluids.

Changing Crankcase Oil and Filters

Steps to change the engine oil and filters.

Checking Drive Unit Oil

Procedure to check and fill drive unit oil.

Checking Power Trim Pump Fluid

How to check and add fluid to the power trim pump.

Checking Transmission Fluid Level

Procedure for checking transmission fluid level.

Lubrication Points

Lubrication points and recommended lubricants.

Propeller Removal and Installation

Procedures for propeller removal and installation.

Seawater Pump Impeller Inspection

Service for the seawater pump impeller.

Flushing Cooling System

How to flush the engine cooling system with freshwater.

Cleaning Oil Cooler Seawater Section

Steps to clean the oil cooler's raw water section.

Drive Belts Inspection

Inspection and maintenance of drive belts.

Corrosion and Corrosion Protection

Understanding galvanic corrosion and protection methods.

Battery Maintenance

Battery maintenance and charging guidelines.

Inspection and Maintenance

General inspection points for the power package.

Attention After Submersion

Actions required after the power package is submerged.

Conditions Affecting Operation

Weight Distribution Effects

How weight placement affects boat handling and performance.

Boat Bottom Condition

Importance of a clean and properly shaped boat bottom.

Cavitation Explained

Explanation of cavitation and its common causes.

Ventilation Explained

Explanation of ventilation and its common causes.

Propeller Selection Guidance

Guidance on selecting the correct propeller for optimal engine performance.

Conditions Lowering Engine Performance

Factors like elevation and temperature that affect engine performance.

Cold Weather or Extended Storage

Power Package Lay-up

Recommended procedures for storing the power package.

Draining Instructions for Storage

Procedures for draining the cooling system for storage or cold weather.

Battery Winter Storage

Battery storage recommendations.

Power Package Recommissioning

Procedures for recommissioning the engine after storage.

Before Starting Engine

Pre-start checks and priming procedures.

Starting Without Fuel System Priming

Method for starting the engine without priming the fuel system.

Priming Fuel System Before Starting

Detailed procedure for priming the fuel system before starting.

Troubleshooting Engine Problems

Engine Will Not Crank

Possible causes and remedies for an engine that won't crank.

Engine Cranks But Will Not Start

Causes and remedies when the engine cranks but doesn't start.

Rough Engine Running or Misfires

Troubleshooting rough running and misfires.

Poor Engine Performance

Identifying and resolving issues causing poor engine performance.

Insufficient Engine Temperature

Causes and remedies for the engine running too cool.

Excessive Engine Temperature

Causes and remedies for engine overheating.

Low Engine Oil Pressure

Troubleshooting low oil pressure issues.

Battery Not Charging

Diagnosing why the battery isn't charging.

Power Trim Not Operating (Motor Off)

Troubleshooting power trim when the motor doesn't run.

Power Trim Not Operating (Motor On)

Troubleshooting power trim when the drive unit doesn't move.

Remote Control Issues

Resolving issues with remote control operation.

Hard or Jerky Steering

Diagnosing and fixing hard or jerky steering.

Owner Service Assistance

Local Repair Service

Recommending service through local authorized dealers.

Service Away From Home

How to find service when away from your local dealer.

Parts and Accessories Inquiries

How to inquire about and order parts and accessories.

Additional Service Assistance

Steps to follow for additional service assistance from Mercury Marine.

Ordering Literature

Ordering Literature in US and Canada

Information needed to order literature in the US and Canada.

Ordering Literature Outside US and Canada

Information needed to order literature outside the US and Canada.

Maintenance Log

Mercury Racing HP1075 SCi Dry Sump Specifications

General

Engine Type	V8
Horsepower	1075 hp
Fuel Type	Gasoline
Induction	Supercharged
Fuel System	Electronic Fuel Injection (EFI)
Compression Ratio	7.5:1
Max RPM	6500 RPM
Lubrication System	Dry sump
Displacement	9.0L
Cooling System	Closed Cooled