SV590-0023 Toro RZT 420H ( RZT420H ) Sv5900023

    GENERAL DISCLAIMER - PLEASE READ! The following long block on this page has some similar specifications as your TORO RZT 420H's engine.

Although this long block may not be exactly (100%) the same as for your TORO RZT 420H's engine , we feel very confident and are doing our best from our many years of experience to show you the closest long block we have in stock that have some similar specifications as your original engine, such as crankshaft diameter and length and mounting bolt pattern that may work for your equipment. Your exact original engine may not be available because it may: be too old to be in production or discontinued due to some EPA regulations.

Our customers may had bought this long block from us and may had done some modifications to adapt to work with their equipment including, but not limited to: transferring the wire harnesses from their old engines to the long blocks, tappering the mounting holes, drilling new mounting holes on mower's decks, cutting and welding mufflers, ...etc.

Although we spent a lot of time to prepare, review and compose this page, the information here may not be 100% accurate as we collected them from our experience and from our customers on the daily basis. You should replace your old engine with the same brand, type, and series, specifications to avoid major modifications. Please contact us first if you have any questions or want to confirm before purchasing. We are here to help!
OUR POSSIBLE REPLACEMENT LONG BLOCK FOR

TORO RZT 420H with: KOHLER COURAGE
SV590-0023 ( SV590S-0023 )

Possible Engine MODEL/SPEC numbers for: SV590-0023
   SV5900023 or SV590S0023
   PA-SV590-0023 or PA-SV590S-0023
   PASV590-0023 or PASV590S0023
   PS-SV590-0023 or PS-SV590S-0023
   PSSV5900023 or PSSV590S0023



NOTICE:
  • Your engine is no longer made by Kohler. We have a solution for you to repower your mower with this special KOHLER Courage long block. Replace any Kohler Courage single cylinder engine Model SV470 to SV620 regardless of HP

  • Buy this SPECIAL long block from us. Do not be mistaken this as some short block from our competitors' offering. If you buy a short block, you will have to transfer a lot of parts from your old engine and have a lot of work to do.

  • This long block will service any single cylinder Kohler Courage SV470 to SV620 engine, with either the gravity-fed or fuel pump configuration. This unique long block includes the complete electrical system and is set up for a gravity-fed fuel system.

    WHAT NEEDED FROM YOUR OLD ENGINE AND WHAT YOU NEED TO DO:
    1. This Single Cylinder Kohler Courage long block came with almost everything. You MUST still have your original engine and the following parts and their related parts:
          a. blowing house (top cover)
          b. carburetor with the attached carburetor's linkages
          c. muffler

    2. You will need to transfer your original engine's blower housing (cover) to the KOHLER Courage long block.

    3. You will need to transfer your original engine's muffler to the KOHLER Courage long block.

    4. Depending on your engine year of manufacture (serial number) you may be able to transfer the carburetor and all the linkages that are connected to the carburetor to the KOHLER Courage long block. If it does not work or you just need a brand new carburetor, you can purchase the correct Kohler Courage Single cylinder engine carburetor from us. Or contact us to get the right one.

    5. A universal electric fuel pump kit is included with the long block. If the original engine has a fuel pump, the electric fuel pump must be installed. Please follow the installation instructions provided in the electric fuel pump kit. If your original engine does not have a fuel pump, you won't need to install the electric fuel pump.

    6. Tap/thread 4 mounting holes the same thread size as your old mounting bolts so that you can reuse them.
    WHAT WILL BE INCLUDED:
    • A BRAND NEW single cylinder Kohler Courage Long block
    • Electric fuel pump and fuel line (hose) and gaskets (If your old engine has a fuel pump, you will need to install this electric fuel pump. Otherwise, you won't have to.)
    • Fuel filter
    • Installation instructions for the long block and electric fuel pump.
    • You can contact us for free support after your purchase. Others may charge you a support fee for this.

    Other minor things that you may have to do when you buy the long block to replace your engine including but not limited to: transfer your wire harness from your old engine to the new one if it is not the same (most of these have similar wire harness though), tap/thread the mounting holes (as most of brand new engines did not have the mounting holes threaded/tapped by the manufacturer) etc..

    YOUR EQUIPMENT BRAND & MODEL#
    YOUR ENGINE BRAND, MODEL, SPEC/TYPE #
    OUR POSSIBLE REPLACEMENT LONG BLOCK
    (If you matched your equipment's information on the left, buy one of the following long block )
    TORO

    RZT 420H
    Make sure your mower has ALL of the following information or CALL us!
    KOHLER COURAGE  ENGINE

    SV590-0023 ( SV590S-0023 )

    Possible Engine MODEL/SPEC numbers for: SV590-0023
       SV5900023 or SV590S0023
       PA-SV590-0023 or PA-SV590S-0023
       PASV590-0023 or PASV590S0023
       PS-SV590-0023 or PS-SV590S-0023
       PSSV5900023 or PSSV590S0023






    		 KOHLER COURAGE SINGLE CYLINDER LONG BLOCK HAS ELECTRIC FUEL PUMP

    As always, if in doubt or the information here is not correct, please contact us FIRST. Your current engine on your mower may looks similar to one of the Reference Pictures below. reference picture

    Reference PicturesAvailable long block (not a complete engine)
    reference picture
    click to buy
    597 cc 2052301

    CLICK TO BUY     $1195.0   FREE SHIPPING.

    Your engine is no longer made by Kohler. We have a solution for you to repower your mower with this special KOHLER Courage long block.

    If you still have your current engine, buy this special long block from us and transfer a few parts (blower housing cover, muffler and carburetor and its related parts..etc) from your current engine to it. Do not be mistaken this as the short block from our competitors' offering.

    If you buy a short block from someone else, you will have to transfer a lot of parts from your old engine and have a lot of work to do.
    CLICK HERE FOR MORE INFORMATION
    reference picture
    click to buy
    Click here to order tapping service: Tap 4 engine mounting holes to the size 3/8-16 NC (Gross) HP, 597 cc TAP3816NC

    CLICK TO BUY     $1195.0   FREE SHIPPING.


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