What is best way to care for 36 Scag wb blades?

Discussion in 'Starting a Lawn Care Business' started by green-pa, Mar 13, 2008.

  1. green-pa

    green-pa LawnSite Senior Member
    Posts: 730

    I have a Scag that I have about 50 hours on it from last year and never got a round to sharpening the blades. I imagine it's overdue, however it seemed to give an excellent cut still. I just want to make sure that it's in top shape for this year. What is the best way to get access to the blades and what tools and techniques will I need to perform the removal? I plan on taking them in to get sharpened or replaced since I don't have a grinder or balancer.
    Would this be ok to remove and put on myself or should I just bring the whole machine in to have them do the removal and installation, ect? I'm on a tight budjet after this winter so I'm trying to save where I can.

    Thanks in advance for your help!
     
  2. CreativeEdge

    CreativeEdge LawnSite Member
    Posts: 65

    You need a 2 1" sockets or wrenches, easiest way to get them off is w/ a air wrench. I dont know how you still get a good cut w/ 50 hrs on the blades, but when sharpening them make sure you keep the 30 degree angle, which may be hard to tell on your blades. I use a handheld grinder to sharpen, seems to be the easiest for me. They need to be sharpened very frequently, you can tell a huge difference btwn sharp and dull blades.
     
  3. green-pa

    green-pa LawnSite Senior Member
    Posts: 730

     
  4. CreativeEdge

    CreativeEdge LawnSite Member
    Posts: 65

    after that long they might be tough to get off by hand, i know you get a small compressor at home depot for like 250-300, you dont need anything big so make sure you get one w/ a regular 120v plug. It is worth the money for the time and headache or knuckle aches you would have w/ out it.
     
  5. green-pa

    green-pa LawnSite Senior Member
    Posts: 730

    How do I angle it though in the first place to access the bolt holding each blade on? Do I use ramps or something?
     
  6. CreativeEdge

    CreativeEdge LawnSite Member
    Posts: 65

    I let my trailer gate down and pull it up on one side, then go to the other. or lift it up and put something like a bucket, brick or whatever under the tires to keep it up
     
  7. green-pa

    green-pa LawnSite Senior Member
    Posts: 730

    That makes sense.
     
  8. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,142

    This is real simple.....lift up the front of you mower and put a jackstand under the deck. Take two 15/16" wrenches(12" long) put one on the top nut and the other one on the bottom bolt and turn. You can reach both from the front of the mower. I use two socket wrenches put you said you was on a tight budget so these two wrenches won't cost much. Think clockwise to tighten the nut on top and counter clockwise to unloosen. Then get a staight 1" file and sharpen the blades or take to dealer and pay $10.
     
  9. Jay Ray

    Jay Ray LawnSite Fanatic
    Posts: 6,510

    If you don't have a compressor and have a Harbor Freight store nearby you can get a 1/2" electric impact wrench pretty cheap ($59?), wish I had kept last weeks flyer. You can also get a hand-held electric 4" angle grinder for about $15 or $20. I wouldn't recommend electric for cars but for just doing blades it will do. You can get prices on their website. If you have a $3 cone balancer and put it on a level surface (verified level) you can balance a blade a lot better than using a nail.

    I have a small compressor, 8 gal. I think, but it is just quicker to plug in the electric impact. You can use a wrench with a cheater, but an impact makes it so much easier. On my exmark the torque spec is 115 and it takes something to loosen it by hand, but its easy with the impact. It is also pretty easy to overtighten with an impact so I use a torque wrench. If internal threads get torn out or boogered up bad, that is a real problem.

    A 48 wb is not particulary dangerous to lift for a blade change, but once it is up I tie it off with half inch braided nylon rope to a truss I tripled overhead and block the rear wheels with beveled 2 x 4's. I used to just deadlift the front of the deck onto jackstands but have a Jungle Jack now -- much easier. If a wb fell it could probably produce an injury that would put a man out of work for awhile -- wrist, hand, elbow, broken bone etc. So I use the rope just in case the jack or jackstand fails.

    I generally get 8-10 hours on a blade, less on bahia.
     
  10. green-pa

    green-pa LawnSite Senior Member
    Posts: 730

    Man, this is a lot of changing blades it seems! I plan on having 40-50 customers this year and working 8 hours/day. So I'd be removing/sharpening blades like every other or 3rd day! Oh, well, I guess I better get used to it if that is what is best. Thanks for all the info. I'm going to look for the wrenches the guy spoke of above your post and/or the power tool u mention here.
     

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