[Farmall] F-12 won't die

[Karl Olmstead]

The mag's not adjusted quite right.  There's a ski-shaped piece attached to 
the moving point back where it attaches to the points cup.  It needs to be 
bent so that it just touches the post that protrudes into the points cup... 
when the magneto advance/retard lever is fully counter clockwise.  If you'd 
like, I can send you a picture of the setup.

Generally speaking, you don't want the impulse involved when you're setting 
the timing.  Once the mag is installed what you said is true; the impulse 
should trip near TDC on #1 compression stroke.  But while you're getting 
engine and mag synchronized, you need to defeat the impulse by either 
pulling up the little latch on the impulse, or by turning the magneto 
backwards.

Use very light (10-wt) oil on the impulse.  Regular engine oil is too 
viscous.  I'll send you a copy of my magneto CD if you'd like; it's free. 
Just send me your mailing address offline, Tony.

-Karl
----------------
> Greetings!
>
> Thanks to all who pointed me in the right direction to obtain plugs and
> wires for my '35 F-12.  After replacing plugs, wires, points and figuring
> out the impulse coupler wasn't engaging, the tractor started on the second
> crank!
>
> However, I still have a couple of minor issues.  The impulse couple seems 
> to
> hang up and not engage reliably, even though I couldn't see any reason for
> it.  Cleaned and lubed the pivot points, anything else I might be missing?
>
> Also, to kill the engine, I have to move the timing lever all the way
> counter-clockwise and put it into third gear.  The mag is timed by putting
> #1 cylinder at TDC, then turning the mag until the impulse trips... is 
> this
> correct?
>
> Thanks!
> Tony