Small Engines (Lawn Mowers, etc.): B&S breaker point timing, point gap, vertical engine


Question
-Thanks Eric, I really appreciate it.  I got the points set last night and they are closing.  I've got one more question (if you've got the time).  I didn't mark the position of the governor arm on the governor shaft when I disassembled the motor.  Is there a correct way to set this up?  There is a centrifugal throw out mechanism on the oil slinger, which pushes a paddle on the governor shaft.  The governor shaft turns a governor arm that is attached to the carbeurator throttle.  I have the long one piece carbeurator with has the choke when you move the throttle past full open.  (choke-a-matic I think?)  Should I set the thottle at the lowest idle and take all the slack between the paddle and throw out?  I realize this may be a tricky question, since I've seen diagrams of what seems like hundreds of different governor setups on briggs motors.  Any advise you have to offer would be greatly appreciated.  Daryl------------------------
Followup To
Question -
Hello Eric!  Got another question for you, if you have the time.  What is the correct procedure for setting breaker points on a Briggs 11 hp vertical engine (model 252707, type 0145, with date code that starts with 79).  My engine has a plunger that runs off the top of the crank.  The crank has a dip in the plunger pathway so that the plunger retracts once for every revolution of the crank.  The plunger opens and closes the points.  So it appears the ignition fires when the points contact, rather than open as I've seen in most engines.  I would appreciate any help you can lend, my project is almost finished.  (And just in time, the grass is turning green!)  Daryl
Answer -
All you need to do is set the point gap to .018 inch.

Just rotate the crank to the high spot, where the points are open and set the gap.  Once the gap is set rotate the crank to make sure the points close on the crank flat spot.  

TIP.  Many techs use a dollar bill or other piece of paper to make sure the points fully close.

Let me know if this helps.
Eric

Answer
1) Loosen screw holding governor lever to governor crank.
2) Rotate throttle plate linkage from idle position to wide open position. Note direction of rotation of the governor arm attatched to the throttle linkage.
3) Place and hold the linkage in high speed position.
4) While holding the linkage in this position, rotate the governor shaft until it stops in the direction noted in step 2.
5) Tighten screw holding the governor lever to governor crank. Torque 35-45 inch pounds.
6) Before starting engine, manually actuate governor linkage to check for binding.

This procedure is directly out of the manual.  Let me know if it helps.
Eric