Jacobsen Tiller

Discussion in 'Mechanic and Repair' started by curdy, Jul 5, 2009.

  1. curdy

    curdy LawnSite Member
    Posts: 39

    Unless the small grounding wire (can see in the first pic) counts as the second wire, it only has one.

    OK, here's where I'm a little confused. I see a small wire coming from under the flywheel and it goes to the throttle control. Looks like #356: 'wire-ground found here. I'm assuming the ground wire in this case is the same as the kill wire?

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    Is that wire no longer needed because the new kill wire will be connected to the same spot? It connects right behind the tube in the second pic. Sorry for the focus, I couldn't get the dang camera to focus where I wanted it to. How does the kill switch work? The part to which it connects doesn't seem to move any, and I don't see anything that makes a connection to ground it out.
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    Bingo..... Cut both wires at the flywheel then run the new wire from the new coil to the same spot behind the breather tube.

    The throttle linkage hits a tang on the back side (can't be seen) of where the wire hooks when the throttle cable is pushed/pulled to the stop position.
     
  3. curdy

    curdy LawnSite Member
    Posts: 39

    Yup, I took a look at it from a different angle and could then see what was happening. I've got everything done except now I'm having to modify the blade governor because it doesn't fit back on to the new coil.
     
  4. curdy

    curdy LawnSite Member
    Posts: 39

    Got it all back together and it wouldn't start. I pulled the spark plug and checked for spark...I couldn't see any. So I'm thinking its one of the following:

    I set everything up right and it was just hard to start...and I wasn't testing the plug right when I pulled it to check.
    *I was pretty tired, so this may not be that unlikely.

    I didn't install it right.
    *Always a possibility :rolleyes:

    The spark plug isn't any good.
    *I'm taking it to the local shop today to get a replacement anyway.

    The flywheel & magnet surfaces need to be cleaned better?
    *I cleaned it off some, but I'm wondering if I need to clean it better?

    Am I missing anything else?
     
  5. curdy

    curdy LawnSite Member
    Posts: 39

    BTW, given the era the engine was built in should I be using a lead substitute?
     
  6. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Dan,

    No lead substitute needed.....

    Did you install the new coil with the plug wire facing up and the kill lead plug facing down ?

    Did you set the coil to flywheel magnet air gap to .010 to .014" or with the instruction card that came in the box with the new coil ?

    Have you checked for spark with the kill lead wire disconnected from the coil ?

    There could be a problem/short in that fancy kill switch causing no spark.

    It's a myth that rust on a flywheel can cause no spark, If everything else is set up/working right rust makes no difference.
     
  7. curdy

    curdy LawnSite Member
    Posts: 39

    Nope :hammerhead: I guess that would be a good idea. That sucks too because now the wire will probably bee too short. I don't have any connectors on hand, I'll have to get some.


    Yes, I set it to .012 with a feeler gauge. When I set it to .01 I felt like it rubbed just a tiny bit on the flywheel in a certain spot.


    Not yet, but I had thought about the same thing this morning. I'll do that if turning the coil over doesn't work.
     
  8. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Flipping the coil should do the trick. :)
     
  9. curdy

    curdy LawnSite Member
    Posts: 39

    Took the spark plug down to the local shop this afternoon and had them confirm the plug was good. Saw it with my own eyes, so we're good on that one.

    Flipped the coil, spliced the kill wire (and left it disconnected from the switch and hanging well free of anything), and set the air gap to .01".

    I tried testing the spark plug and couldn't see a spark. Put it in my hand and I could feel the spark. So I put the plug back in and gave it a try. Could get it started.

    I decided to take a look in the fuel tank realizing I should have emptied it already anyway and put fresh gas in there. (I assumed the fuel was good given the care the previous owner took with other equipment.) The fuel was pretty dark and cloudy. Looks like there may be some bits of rust in the tank as well. I siphoned the old gas out and poured some new in, then siphoned that out just to rinse a little. Added some more and pulled the air filter to shoot a little starter fluid in there. Still wouldn't start. Not sure if its just flooded at this point so I just pulled the spark plug and let it sit.

    Then I dragged myself back into the house temporarily defeated to sit back down here and ask for more :help:
     
  10. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    One thousands of a inch ? Or 10 thousands of a inch which would be closer to right ?
     
    Last edited: Jul 9, 2009

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