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  1. #1
    Member stratos's Avatar
    Join Date
    Apr 2005
    Location
    Brookfield, CT
    Posts
    103

    2020 225 SHO - RPM Spike Startup

    Hi Guys. New Yamaha SHO owner here. I currently have 15 hours on my new engine. I recently noticed that when I start the engine there is a quick spike in RPM's almost like a brief surge. RPMS shoot up to 2400 and before settle back down to 700.

    Is this normal? It just started doing this.

    thanks

  2. Member
    Join Date
    Aug 2016
    Location
    Varnell, GA
    Posts
    7,462
    #2
    I have had 2, both 250s, neither did that. Hopefully yam911 will chime in.
    Last edited by printman71; 07-31-2020 at 05:13 PM.

  3. Member
    Join Date
    Apr 2013
    Location
    Northern California
    Posts
    296
    #3
    Same motor. No RPM surge at start up. Hope you figure it out ... prob nothing serious tho'
    2024 Z520R / 2022 250 ProXS

  4. Member
    Join Date
    Jul 2020
    Location
    Massachusetts
    Posts
    12
    #4
    Are you running A lithium cranking battery?

  5. Member
    Join Date
    Mar 2017
    Location
    Georgetown, TX
    Posts
    767
    #5
    Are you able to video what it’s doing?
    Lake&Bay Boca
    SHO

  6. Member stratos's Avatar
    Join Date
    Apr 2005
    Location
    Brookfield, CT
    Posts
    103
    #6
    I am running a Agm battery.

    I do have a video but not sure how to upload it.

    I made an appointment to bring it in to the dealer.