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MerCruiser 6.2 MPI User Manual

MerCruiser 6.2 MPI
110 pages
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Page ii 90-864197072 NOVEMBER 2007
Passenger Safety in Pontoon Boats and Deck
Boats.................................................................... 38
Boats Having An Open Front Deck..................38
Boats With Front‑Mounted, Raised Pedestal
Fishing Seats...................................................38
Wave and Wake Jumping.................................... 39
Impact with Underwater Hazards......................... 39
Conditions Affecting Operation.............................40
Weight Distribution (Passengers and Gear)
Inside the Boat.............................................. 40
The Bottom of the Boat................................. 40
Cavitation...................................................... 40
Ventilation..................................................... 41
Elevation and Climate................................... 41
Getting Started..................................................... 41
20‑Hour Break‑In Period............................... 41
After Break‑In Period.....................................41
End of First Season Checkup....................... 42
Section 4 - Specifications
Cruising RPM....................................................... 44
Fuel Requirements...............................................44
Fuel Ratings.....................................................44
Using Reformulated (Oxygenated) Gasolines
(USA Only).......................................................44
Gasolines Containing Alcohol..........................44
Engine Oil.............................................................45
Engine Specifications...........................................46
Fluid Specifications.............................................. 46
Engine..............................................................46
Transmission................................................... 47
Section 5 - Maintenance
Owner/Operator Responsibilities..........................50
Dealer Responsibilities.........................................50
Maintenance.........................................................50
Do‑It‑Yourself Maintenance Suggestions.............51
Inspection.............................................................51
Maintenance Schedule—Inboard Models............ 52
Routine Maintenance.................................... 52
Scheduled Maintenance................................52
Maintenance Log..................................................53
Engine Oil.............................................................53
Checking..........................................................53
Filling............................................................... 54
Changing Oil and Filter....................................55
Easy Engine Oil Drain System....................55
Engine Oil Drain Pump............................... 55
Changing Filter............................................56
Transmission Fluid............................................... 57
Checking While the Engine is Warm............... 57
Checking While Engine is Cold........................57
Changing......................................................... 57
Engine Coolant.....................................................57
Checking..........................................................57
Filling............................................................... 58
Changing ........................................................ 59
Cleaning the Flame Arrestor................................ 59
Positive Crankcase Ventilation Valve (PCV)... 60
Changing.....................................................60
Water‑Separating Fuel Filter................................ 61
GEN III Models..............................................62
Removal......................................................62
Installation...................................................63
Lubrication............................................................63
Throttle Cable................................................63
Transmission Linkage................................... 64
Serpentine Drive Belt........................................... 65
Checking..........................................................65
Replacing Belt and/or Adjusting Tension.........65
Flushing The Power Package.............................. 66
Horizon Models................................................66
The Boat Out of the Water...............................67
The Boat In the Water......................................69
Battery..................................................................71
Multiple EFI Engine Battery Precautions.......72
Section 6 - Storage
Cold Weather or Extended Storage..................... 74
Preparing Power Package for Storage..........74
Engine and Fuel System Preparation......... 75
Draining the Seawater System.............................76

Table of Contents

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MerCruiser 6.2 MPI Specifications

General IconGeneral
Engine TypeV8
Alternator Output65 amp / 917 watt
Compression Ratio9.4:1
Displacement6.2L (377 cu in)
Horsepower300 hp
Fuel SystemMulti-Port Fuel Injection (MPI)
IgnitionDistributorless Ignition (DTS)
Fuel Type87 Octane Compatible
Max RPM5400 RPM
Bore x Stroke4.00 x 3.75 in / 101.6 x 95.25 mm

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