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
Description Nm lb‑in. lb‑ft
Stator/starter bracket screws (5 ‑ 4 top, 1 side) 6.0 53.1 –
Engine harness ground screws (2) 6.0 53.1 –
14‑pin connector bracket screw 6.0 53.1 –
5. On electric start models:
a.
Install the starter motor. Refer to Section 2B ‑ Starter Motor Installation.
b.
Connect the negative battery cable to the starter motor and the positive battery cable to the starter solenoid. Tighten
the screws to the specified torque.
NOTE: Ensure that the fuse lead and tilt relay lead are also connected to the starter solenoid and that all three wires
are routed through and covered by the red plastic boot.
a - Negative battery connection at
the starter motor
b - Positive battery connection at the
starter solenoid
Description Nm lb‑in. lb‑ft
Negative battery cable screw (M6 x 12) 6.0 53.1 –
Positive battery cable screw (M6 x 10) 6.0 53.1 –
6. Install the following components on the top of the powerhead:
a.
Stator. Refer to Section 2A ‑ Stator.
•
Route the stator wires under the J‑clip and beneath the relay bracket.
• Secure the harness wires to the electrical bracket with the reusable cable tie.
• Pass a second cable tie through the two slots at the bottom of the electrical bracket and around the harness
wires. Cinch the cable tie to secure the wires.
b.
Flywheel. Refer to Section 2A ‑ Flywheel.
c. Engine lifting eye. Tighten the screw to the specified torque.
Description Nm lb‑in. lb‑ft
Engine lifting eye screw 13 115 –
d. Three cowl standoffs. Tighten the standoffs to the specified torque and cover them with rubber bumpers.
Description Nm lb‑in. lb‑ft
Cowl standoffs (3) 6.0 53.1 –
e.
Camshaft gear cover. Refer to Section 3C ‑ Camshaft Gear Cover/V
ent Tank. Be certain to attach the three hoses
to the proper ports on the vent tank.
f.
Air box and recoil assembly. Refer to Section 8A ‑ Recoil Starter Installation and Section 3C ‑ Air Box
Installation.
IMPORTANT: Be certain to install the neutral interlock cable onto the recoil starter assembly and to connect the
crankcase breather hose to the valve cover.
7. Install the remote control harness and cables when applicable.
8.
Install the front cowl. Refer to Section 5A ‑ Front Cowl. Be certain to secure the fuel hose to the fitting in the front cowl.
9.
Install the driveshaft housing covers. Refer to Section 5A ‑ Driveshaft Housing Covers.
10.
Add 10W‑30 4‑Stroke Marine Engine Oil to the crankcase to the recommended fluid level. Refer to Section 1B ‑ Filling
the Crankcase with Oil.
a
b
63065
Cylinder Block/Crankcase
Page 4A-36 © 2018 Mercury Marine 90-8M0125265 eng NOVEMBER 2017