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  1. #1
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    Dec 2004
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    Think I screwed myself Yamaha TLR 40 rebuild (3 cyl.)

    Well I posted a while back about doing a performance upgrade on my TLR outboard.

    Long story short I had several outboard 40 parts and mixed and matched and screwed up which carbs go with which cdi box and stator coil.

    So know I have a 40 hp power head .030 over, 1 mm shaved head, 50 hp carbs and 50 hp tuner. CCMS Reeds.

    My CDI box was a push to advance and my carbs are pull to open, so when everything is hooked up I am running full advance at idle and as I progress the throttle I retard the timing.

    I have heard about disconnebting the cdi box and leaving it around 12-17 degrees advance...

    This motor is on a 14' Flats boat that weighs about 320#

    TIA

  2. #2
    Join Date
    Mar 2003
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    Ft Lauderdale Fl
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    just advance it to the first wot mark on the timing the 40-50hp will live with 21-24 all day
    Aquarius Inflatable Yamaha 70 EFI
    24 Skater Twin 3.0 300x copies 113mph so far
    954-861-1611

  3. #3
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    Dec 2004
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    and no problems from idle to wtfo and everything in between?

  4. #4
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    Dec 2004
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    Problem solved, just did some creative linkage modifications and reversed the throw from the throttle linkage and had to spin tps indicator arm 180 degrees and massage the hole a little to fit.....

    Revs like a champ and my neighbors are pissed....

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Chris Carson's Marine