Product Manual
Table Of Contents
- Notice to Users of This Manual
- Precautions
- Replacement Parts
- Cleanliness and Care of Product
- Copyright and Trademark Information
- Manual Outline
- Section 1A - Specifications
- Table of Contents
- Model Specifications
- Ignition Specifications at 20 °C (68 °F)
- Charging and Starting Specifications
- Fuel System Specifications
- Cylinder Block/Crankcase Specifications
- Piston Specifications
- Cylinder Head Specifications
- Oil System Specifications
- Cooling System Specifications
- Power Tilt Specifications
- Gearcase Specifications
- Section 1B - Maintenance
- Table of Contents
- Cleaning Care
- Inspection and Maintenance Schedule
- Battery Inspection
- Flushing the Cooling System
- Fuel System
- Fuse Replacement - Electric Start Models
- Spark Plug Inspection and Replacement
- Timing Belt Inspection
- Engine Oil
- Corrosion Control Anodes
- Propeller Replacement
- Gearcase Lubrication
- Lubrication Points
- Storage Preparation
- Section 1C - General Information
- Table of Contents
- Recording Serial Number
- Model Year Production Code
- Engine Component Identification - Manual Start Model
- Engine Component Identification - Electric Start Model
- Following Complete Submersion
- Fuel Requirements
- Painting Procedures
- Emissions
- Shipping of Hazardous Material (HazMat) and Engine/Components Containing Hazardous Material
- Section 1D - Outboard Installation
- Section 1E - General Troubleshooting
- Table of Contents
- Conditions Affecting Performance
- Compression Check
- Cylinder Leakage Test
- Guardian Protection System
- Warning System
- Troubleshooting without a Computer Diagnostic System (CDS)
- Troubleshooting with CDS G3
- Accessing ECM Information with CDS G3
- CDS G3 Screens (10/15/20 EFI)
- Engine Control Module Pinout
- Fault Codes
- Section 2A - Ignition
- Table of Contents
- Ignition Specifications at 20 °C (68 °F)
- Ignition Theory of Operation
- General Troubleshooting
- Engine Control Module (ECM)
- Wire Color Code Abbreviations
- Sensors
- Ignition Components
- Section 2B - Charging and Starting Systems
- Section 3A - Fuel System Operation
- Section 3B - Troubleshooting and Diagnostics
- Section 3C - Service Procedures
- Section 4A - Cylinder Block/Crankcase
- Table of Contents
- Cylinder Block/Crankcase Specifications
- Piston Specifications
- Cylinder Block and Crankcase Components
- Crankshaft Components
- Powerhead Removal
- Cylinder Block Disassembly
- Powerhead Cleaning, Inspection, and Repair
- Powerhead Assembly
- Powerhead Installation
- Section 4B - Cylinder Head
- Section 4C - Oil Pump
- Section 4D - Cooling System
- Section 5A - Clamp/Swivel Bracket and Driveshaft Housing
- Table of Contents
- Clamp Bracket Components (Power Tilt)
- Clamp Bracket Components (Manual Tilt)
- Steering Arm and Copilot Components
- Driveshaft Housing Components
- Driveshaft Housing Cover Components
- Driveshaft Housing Covers
- Front Cowl
- Idle Exhaust Port Cover
- Powerhead/Midsection Assembly Separation
- Engine Mount Replacement
- Clamp Brackets, Swivel Bracket - Power Tilt Models
- Clamp Brackets, Swivel Bracket - Manual Tilt Models
- Driveshaft Housing Removal
- Driveshaft Housing Installation
- Shift Operation
- Kicker Strap (Tiller Handle Model)
- Section 5B - Power Tilt
- Table of Contents
- Power Tilt Specifications
- General Troubleshooting
- Power Tilt - General Information
- Power Tilt Components
- Theory of Operation
- Power Tilt Features and Operation
- Check Fluid and Purge the Power Tilt System
- Cowl-Mounted Tilt Switch
- Troubleshooting the Power Tilt System
- Power Tilt Removal
- Manual Release Valve Removal and Repair
- Power Tilt Motor
- Power Tilt Pump
- Power Tilt Installation
- Section 6A - Gear Housing (2.15:1)
- Table of Contents
- Gearcase Specifications
- Gear Housing and Driveshaft
- Propeller Shaft
- General Service Recommendations
- Draining and Inspecting Gear Housing Lubricant
- Gear Housing Removal
- Gear Housing Disassembly
- Gear Housing Assembly
- Pinion Bearing Installation
- Forward Gear Bearing Installation
- Bearing Carrier Assembly
- Water Pump Base Assembly
- Propeller Shaft Assembly
- Pinion Gear and Driveshaft Installation
- Forward Gear Backlash
- Shift Shaft and Water Pump Base Installation
- Water Pump Cover Assembly
- Propeller Shaft and Bearing Carrier Installation
- Gear Housing Installation
- Propeller Installation
- Section 7A - Throttle and Shift Linkage
- Section 7B - Tiller Handle
- Section 8A - Recoil Starter
- Section 9A - Color Diagrams
1. Sand the entire area to be painted with 3M™ 120 Regalite™ Polycut™ or coarse Scotch‑Brite™ disc or belts.
2.
Feather the edges of all broken paint edges. Try not to sand through the primer.
3. Clean the surface to be painted using PPG DX330 Wax and Grease Remover or equivalent (xylene or M.E.K.).
4. If bare metal has been exposed, use Mercury Light Gray Primer.
5. Allow a minimum of one hour dry time and no more than one week before applying the finish coat.
6. Apply the finish coat using Mercury EDP Propeller Black Paint.
Gearcase and Lower Housing Refinishing
!
WARNING
Some cleaners and solvents are flammable. Improper use can result in serious injury or death from fire or explosion. Do not
use
flammable cleaners on energized equipment, use in a well‑ventilated area, and keep away from open flames or sources
of ignition.
!
WARNING
Continuous exposure to airborne particles such as chemical vapors, dust, or spray can cause serious injury or death. Ensure
that the work area is properly ventilated and wear protective eyewear, clothing, and respirators.
1. Clean the component to remove all oils, wax, grease, salts, and other marine build‑up with an appropriate marine cleaner.
Wipe the part with a solvent type wax remover, grease remover, or naphtha.
2.
If this is a spot repair:
a. Sand the affected area with 180 or 220 grit to remove blisters and coarse pitting, if present.
b. Finish and feather into the surrounding paint with 320 grit either by hand or using dual‑action (DA) equipment. The
original primer should not be sanded through, if it can be avoided.
c. Scuff the entire component with a medium (maroon) Scotch‑Brite™ pad by hand.
3. If refinishing the entire component:
• Media blasting using either a plastic type or soda type media is allowable, provided proper precautions are taken to
prevent grit from entering any mechanisms.
• Complete disassembly and masking prior to media blasting is suggested, with glass media being acceptable in this
case.
4. Treat areas of bare aluminum with Alumiprep® 33, PPG DX‑533, or Metalprep 79. Rinse the area with clean water and
blow dry with clean compressed air.
5. When they are dry, treat the bare aluminum areas with Alodine® 1201™ or PPG DX‑503. Rinse again with clean water and
blow dry with clean compressed air. Masking, if needed, is to be done after this final rinse process, paying special attention
to the masking of anode and ground contact areas.
6. Complete a final wipe with a wax and grease remover or naphtha. Lightly remove dust with a tack rag.
7. Prime the bare aluminum areas with Stits EP‑420 (green) epoxy primer, mixed with Stits EP‑430 catalyst and Stits E‑500
reducer, per the manufacturer's mixing and application directions. PTI PT‑573 or Randolph Rand‑O‑Plate are acceptable
substitutes. Apply two medium wet coats, allowing 20 minutes between. If the topcoat color is Verado Silver, PPG Omni™
MP170 gray epoxy should be applied as a second (intermediate) primer for color match and scratch hiding on gearcases.
8. After it has cured for 24 hours, the primer may be scuffed lightly with a medium (maroon) Scotch‑Brite™ pad to feather the
edge of the spray into surrounding paint and to promote adhesion. Do not penetrate the primer. Wait no more than four
days before topcoating.
9. Topcoat with Stits Aerothane color code 215 for Mercury Phantom Black. Use Stits Catalyst U‑865 and UE‑820 Urethane
Reducer per manufacturer's mixing and application directions. PPG Omni™ MTK9300 is an acceptable substitute. Apply
two medium wet coats, allowing 15 minutes between. Allow to cure for 24 hours before handling.
NOTE: Other PPG topcoat colors are: DU34334 Mariner Silver, DU35466 Force Charcoal, and DU33414M Sea Ray White.
Use PPG DU5 catalyst and reduce per manufacturer's current technical information.
Cowl Refinishing
!
WARNING
Some cleaners and solvents are flammable. Improper use can result in serious injury or death from fire or explosion. Do not
use
flammable cleaners on energized equipment, use in a well‑ventilated area, and keep away from open flames or sources
of ignition.
General Information
90-8M0125265 eng NOVEMBER 2017 © 2018 Mercury Marine Page 1C-13