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Kawasaki FH vs FS engines

Discussion in 'Mechanic and Repair' started by fredmullegun, Apr 13, 2010.

  1. fredmullegun

    fredmullegun LawnSite Senior Member
    Posts: 317

    I found a link about the FS engines saying


    Exmark uses these engine on their Metro now when they used to use (I think) FH series.

    Is this a downgrade from the FH series? Scag just claims they use a Kawasaki KAI 16hp anyone know if it is also the FS series?
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    You can go here; http://www.kawpowr.com/engines/index.aspx

    And compare them for yourself, The FS has the same warranty as the FH series. The 500 hr compliant thing is for EPA, After X hours of wear any engine can fall slightly out of EPA standards....
  3. fredmullegun

    fredmullegun LawnSite Senior Member
    Posts: 317

    They have the same rating for trimmers though. Commercial is 300, home owners are 50.
  4. RonAyersMotorsports

    RonAyersMotorsports LawnSite Senior Member
    Posts: 854

    FH and KAI engines are intended for commercial use, misuse, and abuse. The FS and FR series are a downgrade. If I remember correctly. Most FS and FR series are usually found on more residential equipment.
  5. pugs

    pugs LawnSite Gold Member
    Posts: 3,022

    The new engines use pretty much all the same blocks/heads. The FR's usually get a cheaper single barrel carb and filter. The FS is a step up, cant remember if they are double barrel but this is the line you will see on most walkbehinds or low-mid level ZTR's. The FX is the top of the line with double barrel carbs, DFI, canister air filters...

    Like I said though the internal engine is the same...just different carbs/air filters for the most part.

    FH is going away like FC and FB before it did.

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