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Thread: D4 starting

  1. #1
    Join Date
    Dec 2006
    Location
    Colorado
    Posts
    12

    Default D4 starting

    I have a D4 that has been sitting for many years. I worked on the fuel system and installed new spark plugs in preparation to start the pony engine and then eventually the main engine. The main engine does not have a starter. They pony engine requires a hand crank (pulley on the back of the pony engine). Does anyone know where to obtain whatever is used to rap around the pulley so it can be cranked? Also, is there an easy way to check the operation of the magneto? Thank you in advance for your response.

  2. #2
    Join Date
    Jun 2011
    Location
    Salt Lake City, UT Farm in Marsh Valley, ID
    Posts
    29

    Default starter rope

    Quote Originally Posted by xzp0hy View Post
    I have a D4 that has been sitting for many years. I worked on the fuel system and installed new spark plugs in preparation to start the pony engine and then eventually the main engine. The main engine does not have a starter. They pony engine requires a hand crank (pulley on the back of the pony engine). Does anyone know where to obtain whatever is used to rap around the pulley so it can be cranked? Also, is there an easy way to check the operation of the magneto? Thank you in advance for your response.
    A cotton sash cord about 8 feet long and 1/4" to 3/8" diameter works nicely.

    To check the mag remove a sparkplug and plug it in to the wire again. Give the rope a pull to spin the motor and look for a spark. The spark plug must be touching metal on the motor.
    Last edited by hhydro; 01-03-2012 at 06:11 PM. Reason: incomplete response
    Oldest to newest, D4 7U working, D2 5U working, D6 44A working, D4D SA 84J needs low end rebuild

  3. #3
    Join Date
    Apr 2007
    Location
    Elkhorn, WI
    Posts
    1,643

    Biggrin1 Lots of Options for rope

    Steal the starter rope off from the neighbor that irritates you the most?
    Cut Mom's clothesline?
    That rope at the local Hardware store that feels like it would work?

    My favorite way to test Magneto spark is to get the same neighbor whose lawnmower rope you took, to come over to have a couple of beers, then talk him into holding the sparkplug to the pony motor while watching for spark.
    Just plain old Baling Twine works to!

  4. #4
    Join Date
    Nov 2006
    Location
    California
    Posts
    271

    Default Rope Start

    It appears that some cheese heads have somewhat of a mean streak in them!! ROFLMAO

  5. #5
    Join Date
    Jan 2009
    Location
    Kalamazoo Michigan
    Posts
    747

    Default

    When my Brother was about 7 years old I used him as an "ignition tester" when our lawnmower quit (he was quite a brat way back then). Couldn't ever get him to do it again.
    Rich Salvaggio
    D2 5U9917
    '46 Willys CJ2A Farm Jeep, '49 International KB-7, '31 Allis Chalmers U, Cushman Scooter(s)
    Antique garden tractors & outboard motors
    Other rusty old junk comes & goes without warning.

    The 2 most useful tools to have in your shop are a Crystal Ball and a Magic Wand

  6. #6
    Join Date
    Apr 2007
    Location
    Elkhorn, WI
    Posts
    1,643

    Thumbs up

    I'm laughing! Its all in jest.
    Anyways, file the points, then find a condensor that will fit in there to replace when it doesn't spark. Most people way over analyze the Magneto, when all it really needs is the points filed, condensor changed and clean cap connections. Make sure the plug wires are metal core steel/copper, NOT automotive replacement carbon filament core as noise suppression cables are death to a magneto.
    Do a SEARCH back about 4 or 5 pages as there is a fellow going thru startup on a D4 with many of the same questions you will have, plus a Clutch/Shift engagement description of operation was posted in that same Thread.
    Jeff
    PS
    I'm not a REAL cheesehead!

  7. #7
    Join Date
    Jun 2011
    Location
    Salt Lake City, UT Farm in Marsh Valley, ID
    Posts
    29

    Default

    Quote Originally Posted by drujinin View Post
    I'm laughing! Its all in jest.
    Anyways, file the points, then find a condensor that will fit in there to replace when it doesn't spark. Most people way over analyze the Magneto, when all it really needs is the points filed, condensor changed and clean cap connections. Make sure the plug wires are metal core steel/copper, NOT automotive replacement carbon filament core as noise suppression cables are death to a magneto.
    Do a SEARCH back about 4 or 5 pages as there is a fellow going thru startup on a D4 with many of the same questions you will have, plus a Clutch/Shift engagement description of operation was posted in that same Thread.
    Jeff
    PS
    I'm not a REAL cheesehead!
    Please expound on the "death to magneto" comment. Last summer I had to get a 5U D2 and 7U D4 going and among other problems the critters had gnawed away much of the spark plug boot. Having been shocked more than once while trying to reach in and adjust the choke I replaced them. The Cat part 9H-1180 wire set was $25.08 and I needed 4 sets. Being rather cheap I bought two for the 5U and took them to NAPA to pick out matching components.
    This is what I got for $3.77 a set.
    http://www.napaonline.com/Catalog/Re...&Dk=1&Dp=3&N=0
    It took a few more parts for the magneto end terminal and boot, but that only added $0.92 per set.

    I noticed when I put them in that the NAPA part was carbon filament and the Cat part was metallic core. The D2 with the Cat wires had a hotter spark and was a little easier to start even though I also replaced the points and condenser on the D4. What damage might I have caused with the carbon filament wire?

    The 9H-1180 wire set was 7mm with a 90 degree terminal on the spark plug end (the same as NAPA Belden 780312 except for the wire core material). It turned out than neither the Cat or Napa parts had quite the correct boot for the mag end but I was able to split the original one and move it to the new wires and use the new boot over it.

    Here are the part numbers for two sets (one starting engine) of a 7mm, metallic core, 90 degree terminal and boot with the mag terminal and boot.
    napa-pony-wires.jpg

    (How do I make the attached image full size?)

    I'm hoping this will work. Let me know what you think.
    Oldest to newest, D4 7U working, D2 5U working, D6 44A working, D4D SA 84J needs low end rebuild

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