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  1. #1
    Member
    Join Date
    Feb 2019
    Location
    Atoka, OK
    Posts
    37

    Reconnecting exhaust tuner

    08 optimax 175. Sn 1B516721.
    My exhaust tuner came loose. 2 of the studs were gone and one broken. Do I need to go back with studs or is there any issues with just using bolts?
    Last edited by Russ Ch; 05-17-2025 at 01:26 PM.

  2. Member
    Join Date
    Jun 2013
    Location
    LONGVIEW TEXAS
    Posts
    15,557
    #2
    stainless bolts are fine with loctite and loc washers
    .................................................. ...the scariest thing in life is the unknown ...................................

  3. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
    Posts
    98,231
    #3
    There's a Service Bulletin on this... SB 2009-22R1.

    4@ 8M0030694 (Bolt)
    4@ 35044 (Washer)

    (I recommend adding the 782461 tuner gasket that was used on earlier models- doesn't seal anything but it does help with vibration).

    Red liquid loctite: 265 lbs/in (22 lbs/ft)


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
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