- 2 Stroke Oil
- 3.5 Hp Mercury Outboard Manual
- 2019 Mercury 75hp 4 Stroke
- 2 Stroke Motorcycles
- 2002 Mercury 75hp 2 Stroke Manual
Using the correct grade of fuel helps to ensure optimum performance, economy and reliability from your engine. It is important to follow the recommendations for your model engine as incorrect fuel can damage your engine or affect performance.
IMPORTANT:
Download this manual. preview this manual 2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual Complete Service manual for the Mercury: 4 Stroke 225HP EFI Models This manual is your source for repair and service information. Manual provides step-by-step instructions based on the complete disassembly of the machine. 1956-1989 Manual Covers: 90 through 300 HP models. 1965 to 1989 90-300 hp Inline 6 and V6, 2 stroke models fuel injection and MR Drive: 90 95 100 115 125 135 140 150 150XR2/150 HP 155 HP 175 HP 200 HP 220XRi/200 HP 225 HP 275 HP 300 HP 850XS/90 HP, 4cyl 900/90hp, 6cyl 950/95hp, 6cyl 1000/100hp, 6cyl 1100/100hp, 6cyl 1150/115hp, 6cyl 1250/125hp.
- Using fuel that is below the minimum recommended octane may reduce engine life
- Fuel recommendations are based on engines being set up and tuned to manufacturer's specifications. This includes using the correct propeller to allow engine to achieve recommended maximum RPM under typical load and conditions
- Leaded fuel is not recommended
- Fuel that exceeds 10% ethanol is not recommended
MERCURY & MARINER FUEL RECOMMENDATIONS
- Use a major brand of automotive unleaded petrol (ULP) with a minimum posted octane rating of 91
- These recommendations apply to Mercury and Mariner 2-Stroke, 4-Stroke, Verado and OptiMax models unless specified otherwise (ref to 'Notes & Exceptions' following)
Notes & Exceptions
Verado Models:
- Verado 275/300hp - Premium Unleaded Petrol with a minimum 95 octane recommended for maximum performance
- Verado 350hp - Premium Unleaded Petrol with a minimum 95 Octane Recommended for Maximum performance
- Verado 400R - Premium Unleaded Petrol with a minimum 98 octane
2 Stroke Oil
Engines manufactured prior to 1980:
- 2hp to 20hp - Unleaded Petrol (ULP) - minimum 91 Posted Octane
- 30hp & above - Premium Unleaded Petrol (PULP) - minimum 95 Posted Octane
Performance Products will have different requirements, consult your Operation andMaintenance Manual
OIL RATIOS - 2-STROKE MODELS
Pre-Mix Models
Fuel/oil ratio: 50:1 (50 parts fuel to 1 part oil)
Oil requirement: - Certified TC-W3 2-Stroke Outboard Oil
- Mercury or Quicksilver Premium 2-Cycle TC-W3 Outboard Oil
3.5 Hp Mercury Outboard Manual
- Mercury or Quicksilver Premium Plus 2-Cycle TC-W3 Outboard Oil
- 2-stroke oil is normally added to the fuel tank when filling with fuel.
- This convenient oil measuring bottle is great for calculating oil required for various volumes of fuel - order part # 67-886696 from your authorised Mercury dealer
Pre-mix is generally used in the following 2-stroke models
- All 2hp to 30hp models
- All models up to 225hp manufactured prior to 1984
Autoblend Models
Oil requirement: - Certified TC-W3 2-Stroke Outboard Oil
- Mercury or Quicksilver Premium 2-Cycle TC-W3 Outboard Oil
- Mercury or Quicksilver Premium Plus 2-Cycle TC-W3 Outboard Oil
- Autoblend models have an oil reservoir mounted inside the boat that automatically blends oil with the fuel at a constant ratio of 50:1
- 2-stroke oil is added to the reservoir and does not need to be mixed with the fuel (unless required for running-in)
- Autoblend was used on some 35hp to 115hp models manufactured between 1984 and 1988
2019 Mercury 75hp 4 Stroke
Oil Injection Models
Oil requirement
- Conventional 2-stroke models - Certified TC-W3 2-Stroke Outboard Oil
- DFI/OptiMax models - Mercury or Quicksilver OptiMax/DFI 2-Stroke Outboard Oil
- Oil injected models have an oil reservoir mounted under the engine cowl
Mercury/Mariner V6 models have an additional oil reservoir mounted in the boat
See for yourself what makes us the best on the water
Customers are confident when they buy Mercury®. An investment in unmatched quality, durability, and performance. Browse our engine test data to check out the numbers behind the name.
Frequently Asked Questions on products, warranty, storage and maintenance.
See all FAQsMercury Joystick Piloting - the system that allows you to effortlessly move your Mercury-powered boat in any direction with the push of a joystick. It takes the stress out of docking and maneuvering in tight spaces and less-than-ideal environments. Check out these how-to videos to learn more about this awesome technology.
2 Stroke Motorcycles
Watch these step-by-step maintenance videos created to help you care for your Mercury engine.
A Material Safety Data Sheet (MSDS) is a form containing data regarding the properties of a particular substance. It is intended to provide workers and emergency personnel with procedures for handling or working with that substance in a safe manner.
Download MSDS sheetsNeed an Owner’s Manual for your Mercury Engine to perform maintenance, replace parts or just learn more about your engine? Mercury has made it easy for you to receive a free printed copy or to download and print your own copy. To order a printed version of the Service Manual for your particular Mercury Outboard or MerCruiser Engine, click here.
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