What is the ideal ratio for HP and Deck size?

Discussion in 'Lawn Mowing' started by Mike'sMowing&Buckthorn, Apr 18, 2010.

  1. Mike'sMowing&Buckthorn

    Mike'sMowing&Buckthorn LawnSite Member
    Posts: 14

    I am looking at a Toro 44 inch walk behind and the motor is a 16 hp briggs and straton, and I am concerned that the 16 hp wouldnt be enough for the blade size. Can people tell me what they think the right HP would be for this size of a deck? I have heard that if you have a 40 inch deck it should be about 18-22 hp, but I could be wrong. Thanks!
     
  2. fredmullegun

    fredmullegun LawnSite Senior Member
    Posts: 317

    B&S engine? Is this a used mower because I did not know they used any B&S on their walk behinds.
     
  3. Mike'sMowing&Buckthorn

    Mike'sMowing&Buckthorn LawnSite Member
    Posts: 14

    yeah it's a kind of old mower, like 5 years or so.
     
  4. Richard Martin

    Richard Martin LawnSite Fanatic
    Posts: 14,700

    If you're just cutting grass and not bush hogging then 16 is plenty. Back in the day that mower would have come with a 12.5 or a 14.
     
  5. SouthSide Cutter

    SouthSide Cutter LawnSite Bronze Member
    Posts: 1,333

    My 48WB has a 18Kaw and it has PLENTY!!
     
  6. southside, what walkbehind do you have?
     
  7. SouthSide Cutter

    SouthSide Cutter LawnSite Bronze Member
    Posts: 1,333

    Bobcat Hydro 48
     
  8. rcslawncare

    rcslawncare LawnSite Bronze Member
    Posts: 1,684

    You should be fine.
     
  9. MarcSmith

    MarcSmith LawnSite Fanatic
    Posts: 7,157

    5hp for every foot
     
  10. 81Bronk36

    81Bronk36 LawnSite Member
    Posts: 178

    my 36 has a 12.5 and my 48 had a 14.5??? Kawi 420 Both belt drives with no sulkies.
     

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