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    Mower Blade Type

    On my GX345 with a 54 inch mower deck the manual lists several replacement blades.

    Standard
    Discharge
    Hi Lift
    Mulching

    I do not have a mulching kit. Just a side discharge.

    What is the difference between the standard, discharge and Hi Lift?

    Thanks!
    '15 1025R TLB, Rear Blade, MiddleBuster, Lawn Roller, 40" Drop Spreader, Piranha Tooth Bar, JD Ballast Box, Titan 5' Landscape Rake
    '08 GX 345 Mower Deck, Front Snow Blade

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    sennister's Avatar
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    The angle of the blades. The high lift have more pitch to them to create more suction. The suction will help stripe the grass better and give you a better cut as it sucks the grass up and the blade cuts it off. It can also chop up the clippings more. While this all sounds good there are some drawbacks. If you have sandy soil it will suck the sand up and wear the deck more. It also will take more power to run so there will be more of a load on the engine compared to standard lift.

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    JD Z950R 60" Deck with DFS Collection System

    JD X585, 54C deck,
    CTC Model X4750 F.E.L - Modified Imp Pressure Relief from 900 to 1175PSI, Power Flow and MC519 cart, 54-inch Quick-Hitch Front Blade, 47-inch Quick-Hitch Snow Blower, 3-pt hitch, HF Quick Hitch, Heavy Hitch, 48" box blade/rear blade, Dethacher, 3pt Sprayer

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    Quote Originally Posted by sennister View Post
    The angle of the blades. The high lift have more pitch to them to create more suction...
    My question is more about the Discharge style. Is it a Medium-Lift?
    '15 1025R TLB, Rear Blade, MiddleBuster, Lawn Roller, 40" Drop Spreader, Piranha Tooth Bar, JD Ballast Box, Titan 5' Landscape Rake
    '08 GX 345 Mower Deck, Front Snow Blade

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    sennister's Avatar
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    Quote Originally Posted by BillQ View Post
    My question is more about the Discharge style. Is it a Medium-Lift?
    Not 100% sure but they seem to have non-standard terms for blades. For instance on my Ztrak they have Low, Standard, High lift then the Mulch blades. I would assume in your case you would be right, it is more of a medium lift. Something between what a high lift would have and the standard.

    EDIT: This isn't for your machine specifically but this provides some description for the different blades.

    https://jdagccc.custhelp.com/app/ans...M0TE1ObQ%3D%3D
    Last edited by sennister; 04-11-2016 at 02:19 PM.
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    JD Z950R 60" Deck with DFS Collection System

    JD X585, 54C deck,
    CTC Model X4750 F.E.L - Modified Imp Pressure Relief from 900 to 1175PSI, Power Flow and MC519 cart, 54-inch Quick-Hitch Front Blade, 47-inch Quick-Hitch Snow Blower, 3-pt hitch, HF Quick Hitch, Heavy Hitch, 48" box blade/rear blade, Dethacher, 3pt Sprayer

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    BillQ(04-11-2016), gbnpp05(04-11-2016)

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    TJR345's Avatar
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    Looking at JD parts there is only standard and high lift.Mulching only if you have the mulching kit. Standard and discharge are usually the same terminology most of the time.
    Tom

    2019 X590 with power mulch control and PF bagger
    30" mechanical tiller
    02 X595 with 62" deck,front thatcher and powerflow PTO kit
    3pt hitch with Heavy Hitch 45 JD loader
    12 JD suitcase weights
    JD/Brinly 3pt plow
    Frontier SS1036 3pt pto spreader
    (2) JS63C walk behind mowers
    TS 105 JD weed wacker
    tow behind 15 gal. sprayer
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    Turftime 54" 3pt core aerator

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    Quote Originally Posted by BillQ View Post
    On my GX345 with a 54 inch mower deck the manual lists several replacement blades.

    Standard
    Discharge
    Hi Lift
    Mulching

    I do not have a mulching kit. Just a side discharge.

    What is the difference between the standard, discharge and Hi Lift?

    Thanks!
    I use Gator blades by the Oregon company. The trailing edge of the blade is serrated and cuts up the clippings better than a conventional blade. Usually a JD dealer will have them but I have a local hardware store in my area that offers them.

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    TickTock's Avatar
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    I think Predator2 blades are manufactured by Oregon too. I'd bet they are the same blade sold under a different name.

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    Just bought a new set of Gator blades for my X540 with a 54" deck. Going to put them on later this morning. Interested to see how they work. Prior to this I only ever used the standard blade that came with the tractor. Only had one problem with them. I get some blow out trying to much up ground cover in the fall.

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    TickTock's Avatar
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    You should always sharpen new blades too. Anymore, it seems like they cut the blade but don't sharpen it anywhere near what it should be.

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    I got to say that them gator blades look pretty good from the factory. However I just got a Work Sharp brand knife and tool sharpener. So I'm itching to use it. Lol
    That tool has worked far better than I thought it would.

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