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Vanguard Engine

Discussion in 'Mechanic and Repair' started by haligan, Jan 18, 2006.

  1. haligan

    haligan LawnSite Member
    Messages: 22

    I need to replace my 18 hp vanguard engine Model 351776-1046 on my great dane surfer. The problem is I don't know which replacement model to order. There is one model that has a shaft that is 3.19 and one that is 3-5/32. Can anyone help me with this without me having to pull the old engine off before I receive the new one. Also, I was considering putting a 16hp on instead of a 18hp. Someone told me that they were the same engines just labeled with different hp. Can anyone inform me of my options here?
  2. Redneckn

    Redneckn LawnSite Senior Member
    Messages: 294

    Replacement is: 351772-1045. Or shortblock #: 496241.
  3. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    This is what was listed on the Dealers site for a replacement engine using your old model number. You will need to install some external items off your old engine onto the new one.

    Model Type Crankshaft
    351776 1046 808429
    IPL | Owners Manual List

    Part Number Notes

    Model Type Change Type # To RPM Trim
    351772 1045 3600 All
    IPL | Owners Manual List

    Original engine was equipped for or with a 12 volt or 120 volt Gear Drive Starter and/or with alternator only. Transfer all related parts as required.
    The original engine was equipped with Debris Gard. Transfer these parts to replacement engine.
    Transfer the Muffler and/or Spark Arrester Assembly from the original engine if suitable for additional service, or add new parts as required. In some cases it maybe necessary to transfer the Oil Filter Adapter to the replacement engine.

    Guess Redneck beat me to it......

    TURF DOCTOR LawnSite Silver Member
    Messages: 2,138

    Man you guys rock on help.:cool2:
  5. haligan

    haligan LawnSite Member
    Messages: 22

    The engine model # you guys give me is a 20 hp vanguard. I have an 18 hp. Also, I have a recoil start.
  6. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Messages: 2,613

    Go with the 20 then, they are probably the same as far as mounting goes, if the crank diameters are the same and length is the same, then you are set. Usually, 2hp differences are accomplished by adding a little more bore to the cylinder, therefore all other parts are the same and you get the extra 2hp :cool2:
  7. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    I'm affraid what you have is a 20 hp with a 18 hp decal on it, The numbers listed above are Briggs Replacement engine numbers from the Dealers Site as I said.
    Check this out; http://www.smallenginewarehouse.com/product.asp?PN=351772
  8. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    You can click below and see the numbers for yourself if you like. It takes a second to down-load.

    Original engine was equipped for or with electric start.

    Attached Files:

  9. haligan

    haligan LawnSite Member
    Messages: 22

    Thanks for all the help.
  10. haligan

    haligan LawnSite Member
    Messages: 22

    Restorob or anyone who knows,
    I made a mistake on the model #. It is 350776-1046 not 351776. Can you give me the replacement for that model. thanks

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