FORE  &  AFT  MARINE

    OUTBOARD TACHOMETER SELECTION

    Rotary selector switch on rear of tachometer must be set to number of
    alternator pulses per engine revolution. See Chart below (if your specific year/horsepower is not listed, see"All others" under your brand.):

    MAKE/MODEL
    ALTERNATOR
    POLES
    SWITCH
    POSITION
    CHRYSLER®:

    35, 70 HP & up (1968-1983)

    12
    6P
    EVINRUD®E*/JOHNSON®*/OMC SEADRIVE®/:
    Less than 70 HP (2 cylinder, 2 stroke)
    10
    5P

    All SeaDrives and all other models
    Engines with warning light tachometers require similar replacements

    12
    6P
    FORCE® (U.S. MARINE):
    50 HP (through early 1987, A, B models)
    8
    4P
    35 HP (1986-date), 40 HP (1993-date)
    12
    6P
    50 HP (1992 Revision ‘B’ & newer)
    70 HP ('91-date)
    90-120 HP (1991 Revision ‘H’ & newer)
    150 HP (1991 Revision ‘B’ & newer)
    L-Drive, 90-120 HP (1991 Revision ‘B’ & newer)
    L-Drive, 145 HP (1991-date)
    Honda®:
    35/40***/45/50*** HP with alternator
    6
    3P
    All Other Models with Alternator
    4
    2P
    MERCURY®**/MARINER®**:

    2-Stroke Models:

    6 thru 25 HP (U.S. Origin)

    8
    4P

    30/40 HP, USA Serial 0G53314 and up

    12
    6P

    35 and 40 HP,
    USA serial # 582399 & up
    Canada serial # 7169337 & up
    Australian serial # 8070639 & up
    Belgium serial #9298955 & up

    8
    4P

    All Other 2-Stroke Models

    12
    6P

    4-Stroke Models:

    8 and 9.9 HP

    6
    3P

    All Other 4-Stroke Models

    12
    6P
    SUZUKI®:
    2-Stroke Models:

    Less than 55 HP, (except those noted below),
    60 & 65 HP thru 1985
    Cabrea 50-60 HP

    4
    2P
    25, 30 HP (1993-date);
    55, 65 HP (1985-date)
    6
    3P

    75 HP & up (1985and newer);
    Cabrea 75 HP & up

    12
    6P
    4-Stroke Models:

    All 4-Stroke Models

    12
    6P
    TOHATSU®/NISSAN®:
    All 2 Cylinder models with alternator
    4
    2P
    All 3 cylinder models
    6
    3P
    All 4 cylinder models
    12
    6P
    YAMAHA®:
    2-Stroke Models:

    9.9, 15 HP

    4
    2P

    25 thru 70 HP

    6
    3P

    90 thru 250 HP

    12
    6P
    4-Stroke Models:
    F/T 9.9, F15 HP
    6
    3P

    F/T 25 thru 225 HP

    12
    6P

    * 88-115 HP “Special” models may require addition of an OMC Voltage Regulator to the engine, or a 2,000-ohm (or larger) resistor to the rear of the tach.
    ** Some Mariner/Mercury 30 & 40 HP (2 cylinder) non-USA built engines
    may require a Module (Mercury P/N 17461A2) when using any of these tachs.
    *** Honda 40 & 50 hp models may require module
    (Honda P/N 06383-ZV5305)
    if tachometer is erratic between idle & 1800 rpm.


    Connections required are: Ground, 12 vdc (switched on/off from Ignition/Start Switch), AC (alternating current) from alternator (usually a Gray wire in engine harness, see schematic below).
    If lighting is desired, 12 vdc from Panel light Switch.

    NOTE: Engine designs are subject to change.
    All data shown is based on the latest information available at the time of publication.
    Teleflex assumes no responsibility for its correctness or the misapplication of its products.

    Review Tachometer Installation Procedure

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