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PG ultra help

Discussion in 'Pesticide & Herbicide Application' started by James Cormier, Jul 24, 2004.

  1. James Cormier

    James Cormier LawnSite Bronze Member
    from Ma
    Messages: 1,217

    Any Ideas to why my ultra has become such a slow poke?
    My centri blows it away,

    What are the RPm's in high gear wide open? Mine struggles to get over 3,000, I adjusted the idle but it just makes the rpm faster at idle not at full speed.
  2. turfsurfer

    turfsurfer LawnSite Senior Member
    Messages: 364

    James, I didn't have mine long but I do remember that the RPM's at full throttle were significantly more than 3000. Idle RPM was around 1960. Hope this helps some.
  3. TSM

    TSM LawnSite Senior Member
    from MA
    Messages: 707

    yeah, our ultras are around 3400 full throttle (i pretty sure)
    when we had the centris i think they were around 3600

    i know there is a way to adust but i'm not sure how? You should give them a call
  4. LwnmwrMan22

    LwnmwrMan22 LawnSite Platinum Member
    Messages: 4,373

    The book says @35-3600 James.

    One thing I've noticed on mine, is when you're spraying, the tach jumps up to 4500+. The pump must interfere.

    Usually, wide open I'm high 3300 to 3500.
  5. Pilgrims' Pride

    Pilgrims' Pride LawnSite Senior Member
    from MA.
    Messages: 481


    e-mail me with your mailing address or fax number.
    If the ultra is similar to the centri I may have your answer.
    There is a plate that can be adjusted that will improve idle and operating speed.
    It's easier to send a picture than try to explain here.
  6. grassguy_

    grassguy_ LawnSite Senior Member
    from Ohio
    Messages: 633

    PP is right, we've had to adjust the plate on out centris to get the RPM's in the right range. I haven't had to do it to our Ultra but imagine its similar. You know you can give me a buzz or email if you need some help.

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