1969 Sportwin tiller throttle timing

[mvaughan]

Hello again.

I have had to remove my stator plate to replace a plug wire. In the process of reassembling, the timing on the throttle has got messed up. I have tried several times with no success. My manual has nothing relating to this. How do you get the timing set properly (or close)

Thanks Mike

 

[jbjennings]

Re: 1969 Sportwin tiller throttle timing

I'll give this a try....

The stator plate can pretty much only go on one way. The tiller gears at both locations have a slot and a big tooth that match up so that the throttle gears are easy to time. The ignition timing is done by the position of the magnet in the flywheel which can't be changed, and the points cam position which is determined by the flywheel key, which also can't be changed.
The only thing that I can think of is that maybe the throttle cam is not attached to the stator plate in the right position. I think there may be another screw hole that might allow you to misposition it.

What is your motor doing? Is it backfiring and will not run? You may have the spark plug wires reversed.
Are you not getting spark? Probably a bad connection but could be many things.

Hope this was helpful, post further info. and maybe someone can identify the exact problem.
Good luck,
JBJ

 

[mvaughan]

Re: 1969 Sportwin tiller throttle timing

Please see post:

Re: cold spark plug after running
Good news! The motor is running great. The lower plug wire had a split in it. After replacing, motor is running great. However, during reassembly of the stator plate, I screwed up the throttle alignment. Using trial and error several times, still cannot get is set properly. My manual has nothing about throttle set up.

Can any one help?

Thanks Mike

As stated, I had issues with the bottom plug not firing and being cold after running. Turned out to be a broken plug wire. This is fixed and engine run (in test tank) much better. In the process of reassembly, I messed up the tiller throttle timing.(shifts on fast setting, only goes back to slow). I have pulled the gear attached to the arm attached to the stator plate out enough to disengage from the tiller gear to try to reset the timing. Have tried several times and have not hit the sweet spot. If someone knows of a trick, please let me know.

Thanks Mike

 

[jbjennings]

Re: 1969 Sportwin tiller throttle timing

Please see post:

Re: cold spark plug after running
Good news! The motor is running great. The lower plug wire had a split in it. After replacing, motor is running great. However, during reassembly of the stator plate, I screwed up the throttle alignment. Using trial and error several times, still cannot get is set properly. My manual has nothing about throttle set up.

Can any one help?

Thanks Mike

As stated, I had issues with the bottom plug not firing and being cold after running. Turned out to be a broken plug wire. This is fixed and engine run (in test tank) much better. In the process of reassembly, I messed up the tiller throttle timing.(shifts on fast setting, only goes back to slow). I have pulled the gear attached to the arm attached to the stator plate out enough to disengage from the tiller gear to try to reset the timing. Have tried several times and have not hit the sweet spot. If someone knows of a trick, please let me know.

Thanks Mike

I don't understand what you mean by the quote in bold above.

The ignition timing is most likely right if the engine will run at all. What you may have is a carb synchronization problem. I believe that is what you're describing, anyway.
I believe that there will be two little marks on the throttle cam which the throttle roller rids on. When you twist the throttle grip, as the armature plate turns, the roller should just begin to touch the throttle cam and begin opening the throttle plate inside the carb as the roller passes the two little marks on the throttle cam. If so, it is synchronized properly.
The start/shift/slow on the steel band that is behind the tiller throttle grip are pretty much useless. I ignore them. If the throttle grip will fully open and fully close the throttle plate inside the carb, then you should be in good shape.

Did you loosen the throttle cam retaining/adjusting screws on the armature plate when you took the armature plate off?
If so, adjust the throttle cam so that the roller just hits the cam marks when the plate is turned.
Hope this helps,
JBJ
BTW, I didn't know you had another thread on this topic.

 

[mvaughan]

Re: 1969 Sportwin tiller throttle timing

It is all adjusted correctly now.

Thanks for all the help.

Mike