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How much gas does your mower use per Hour?

Discussion in 'General Industry Discussions' started by Soupy, Apr 16, 2005.

  1. Soupy

    Soupy LawnSite Gold Member
    Posts: 3,125

    I just got a new mower with a 27hp Kohler on a 52" Hustler Z. I am figuring about 1.1 gallons an hour. I filled it up and it ran out right at 10 hours. The tanks are 12 gallons, but I only put 11 gallons in because 12 would fill it to the very top and make a mess.

    This mower only registers hours when the blades are running. I was able to cut 36 lawns on one tank averaging $35 per lawn. 9 of these lawns were cut with a different mower (36") in back though.

    I thought the 27 Kohler would cost me more in gas then my 23 Kawi (same mower only 400 more hrs) but that doesn't seem to be the case. The Kohler is a little better. One thing I noticed is that the Kohler doesn't work as hard as the 23 Kawi. The 27hp on a 52" can go through some thick grass. My time spent cutting was cut way down too. I didn't have to double cut many lawns that the 23 Kawi on the same mower would have to.

    My 23Kawi/52 Hustler is a 2001 (Had 50hrs at the start of last year) model with 450 hrs but has the same deck etc. The other difference that might change the fuel consumption is the 23 Kawi didn't have the Donaldson air filter.

    I am very glad I went with the bigger engine size. A lot of people would think it is overkill, but so far it has proved to be a wise decision. Like I said gas consumption doesn't seem to be an issue and the added power has saved time.

    I would like to hear what some of you other guys are using per hour? Please state your engine size, make/model of engine, mower size, and make/model of mower.
  2. MOW ED

    MOW ED LawnSite Fanatic
    Posts: 5,028

    I have a 26EFI and I have a 4 gal tank on the Walker. I get about 6 hours out of it.
  3. ProMo

    ProMo LawnSite Bronze Member
    Posts: 1,468

    I demoed a 27hp generac put in over 8 gallons of fuel and ran dry with 4 hrs on the meter
  4. grass_cuttin_fool

    grass_cuttin_fool LawnSite Gold Member
    Posts: 3,503

    At my dealers open house back in March, they are saying that the newer model kohlers are alot more fuel effiecent than just 2-3 years ago
  5. Soupy

    Soupy LawnSite Gold Member
    Posts: 3,125

    Now that's good gas mileage!!! I figure you are getting about 1/2 gallon and hour better then my 27 Kohler. With todays price at $2.14 down from last weeks $2.25 you are saving about $1.05 per hour compared to me. If you keep your mower for 1000 hours it will pay off to have purchased the EFI based on gas usage only. If you keep it for 2000 hours you will more then double your money back. You made a Wise choice. I didn't have the extra grand up front :(.
  6. Soupy

    Soupy LawnSite Gold Member
    Posts: 3,125

    That's 2 gal an hour. over $4/hr just for gas for that thing. With todays gas prices we should be looking real close at which engines get what gas mileage today.
  7. Soupy

    Soupy LawnSite Gold Member
    Posts: 3,125

    Bump... Doesn't anyone know their gas mileage? I guess it's back to talking about lowballers :(.
  8. ALarsh

    ALarsh LawnSite Silver Member
    from Midwest
    Posts: 2,412

    I have a 27 kohler on a 60" turboforce deck. I would say I am getting a little less than you are (If I were to give an estimated guess, I would say 1.2-1.3 gallons/hr). I can't give you an exact answer yet because I don't run the tanks dry (I do not carry gas tanks with me so I fill up before I leave).
  9. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    48" ZTR with 21hp Kawasaki, also without canister air filtration. SuckZ.

    The best I have EVER got out of this engine is 1.25 gallons/hr or 0.8 hrs per gallon.

    Funny part is also sorta like your situation Soupy. Exact same mower with a 25hp Briggs gets twice as good at best. Yeah, 0.66 gallons/hr or 1.51 hrs per gallon.
    The Briggs has never burned over one gallon. On average more like 0.75-0.80 gallons/hrs.
    As a general rule of thumb, feels like twice the power, at half the fuel consumption.

    I don't see what everyone thinks is so great about Kawi-Power?
    Torque Torque Torque, that's all you hear.
    Feels stronger than higher HP engines.

    My azz..... they need to try a Briggs out for power.

    But if you want real power and torque with the best fuel consumption, go DIESEL.
    Yall are gonna be sick when some of the diesel owners start posting 0.5-1.0 gallon/hr of non-road taxed diesel.
    (50-some cent cheaper in NC)
  10. Appalachian landscape

    Appalachian landscape LawnSite Senior Member
    Posts: 453

    I think my walk behind gets about 2/3 gal per hour.

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