Just got the new Electronic Ignition (STK-402L) from Electrex.  The old Stator is removed and the instructions say that if you position the plate in the center of the screw holes the bike will run....what I want to know is, is it possible to use a degree wheel to set the timing after you find TDC, or do you need to use a strobe.  Second question;  how do you adjust the stator plate with the engine running when the flywheel is in front of the plate?.

With electronic ignition, there is no way to determine the timing without a strobe and the motor running.

Yes you have to take the flywheel off to adjust the stator position.

I have that ignition in my 250c, you'll need to mark the cases & flywheel at the correct firing point before strobing it. Chances are centre of the slot will be pretty close, I didn't manage to strobe mine before using it & it was pretty good, some slight pinking under heavy load hill climbing between sections but fine in the sections

 

Hi All,

I know this is a old post, but this is exactly where I am at with my son's TY250 restoration.  My question is about, (" you'll need to mark the cases & flywheel at the correct firing point before strobing it".) Sodo I bring the piston to 3.1mm  (.122") BTDC and somewhere on the flywheel and case put a mark where when a strobe light is used the marks  will line up when timing is correct?  Seems that's what is being said. Thanks.

LaVern 

 

Chapter 2 page 10 & 11 in the service manual describes the timing process, the case and the flywheel already have alignment marks on them just to the right of the 12 o'clock position.  Timing with a strobe is performed when the engine is operating at 2500 rpm.

Thank you for that information. I did not see any timing marks but that is just about where I marked the flywheel and case with a felt tipped marker.  I picked that area because the nut on the flywheel case lined up very close to the edge of the case. I will have to take a closer look tomorrow and see if I can see the marks near there. What I did was exactly what I suggested in my previous post.  I brought the piston to 3.1mm BTDC and made a mark on the case and flywheel. Thanks again. 

LaVern

 

P.S. Is there a way to get emails informing me of replies to my postings? I just happened to come back to this forum and saw a reply was made 7 hours previously.

LJS

Edited July 14, 20233 yr by LaVern

Typewriter wite-out works good to highlight a timing mark, the white shows bright under the timing light.  I may have been looking at the service manual for a newer TY, but there still should be marks from the factory.  Early TY's had extra weights bolted to the flywheel to increase inertial torque,  I rode them both with the weights installed and without, the difference being the engine spools up a little faster if the weights are removed (personally I preferred the performance with the extra weights removed)

 

On 7/14/2023 at 1:44 PM, LaVern said:

Thank you for that information. I did not see any timing marks but that is just about where I marked the flywheel and case with a felt tipped marker.  I picked that area because the nut on the flywheel case lined up very close to the edge of the case. I will have to take a closer look tomorrow and see if I can see the marks near there. What I did was exactly what I suggested in my previous post.  I brought the piston to 3.1mm BTDC and made a mark on the case and flywheel. Thanks again. 

LaVern

 

P.S. Is there a way to get emails informing me of replies to my postings? I just happened to come back to this forum and saw a reply was made 7 hours previously.

LJS

re P.S.

Yes. Go into your account then "settings" then "other settings"