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Blade specs on Jacobsen

Discussion in 'Mechanic and Repair' started by mowermedic, Jul 15, 2004.

  1. mowermedic

    mowermedic LawnSite Member
    Messages: 6

    I have an older Jacobsen Commercial Walk-Behind 12.5hp
    Kawasaki with a 50" mower deck.

    The mower is Model 68491 Serial 1638.

    Problem is no parts are made for this anymore and I need to
    replace the blades, however cannot find any specs on what
    size they are.

    In the parts list for this mower they are listed as

    Part #390481 Bar, Cutter

    Any information on the size of these blades would be great!

    Thanks for your help.
     
  2. barnard

    barnard LawnSite Senior Member
    Messages: 618

    Can you just measure your old ones? or don't you have them?
     
  3. mowermedic

    mowermedic LawnSite Member
    Messages: 6

    I have the originals however they can't
    be properly measured since the corners
    are rounded off.

    They have been working fine until one
    was bent from a brick so now they need
    to be replaced.

    In the past I have spoke to some Jacobsen
    dealers. Never seem to have any specs on
    blade size.

    Thanks.
     
  4. barnard

    barnard LawnSite Senior Member
    Messages: 618

    The only blades listed in my prime line catalogue for a jacobsen 50" are 17 5/16" long with a 7/16" center hole and 1/2 " outer holes that are 1 5/8" center to center 2'' wide and .155 inch thick . If thats your blade the prime line # is 7-o4779 . Hope this helps.
     
  5. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

    The only blade for a Jacoben 50" cut my Rotory book shows is 17- 1/4" & 7/16" center hole & 1/2" outer hole & 1-5/8" center to center & 2" wide by .150 thick. It is Rotory part number 15-3347 and is said to replace OEM numbers 500905 and 330720. Good luck
     
  6. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

  7. barnard

    barnard LawnSite Senior Member
    Messages: 618

  8. mowermedic

    mowermedic LawnSite Member
    Messages: 6

    Those blades are for 3 blade decks.

    This deck is 2 blades. Have not found
    the blades in Rotary, Stens, Primline or
    Silver Streak.

    At least not under Jacobsen. That is why
    specs are needed to find a comparable
    blade.

    Thanks.
     
  9. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

    Go to the UK web site and you will see a IPL of the cutter deck. It shows two blades like you said you are needing. I know the UK is a little far to order blades but that is all I have found so far.
     
  10. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

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