Stihl 045/056 ignition

[Jasonrkba]

I just built a basket case and do not have spark. These Bosch ignition systems are new to me. I assume fundamentally they should function the same but "I don't know what I don't know". New plug, switch functions properly and the ground wire is good. Plug wire is good. I replaced the switch wire but haven't tried it yet. The flywheel/rotor is in excellent shape. Seems the only thing left would be the ignition coil. Before I spend more money is there anything I've missed? Here is a picture of the particular model I have and the flywheel puller I made.

Thanks. Jason

 

[Woodslasher]

I just built a basket case and do not have spark. These Bosch ignition systems are new to me. I assume fundamentally they should function the same but "I don't know what I don't know". New plug, switch functions properly and the ground wire is good. Plug wire is good. I replaced the switch wire but haven't tried it yet. The flywheel/rotor is in excellent shape. Seems the only thing left would be the ignition coil. Before I spend more money is there anything I've missed? Here is a picture of the particular model I have and the flywheel puller I made.

Thanks. Jason

First, that's a SEM GE coil, second, did you line up the timing mark on the coil with the timing mark on the case?

 

[Jasonrkba]

No I didn't. I noticed it was adjustable but didn't know what I was doing so I put the bolts back where they where. I could see from the marks where they seated before. I'll check that out in the morning.

 

[Jasonrkba]

I found some info in the tech notes.

 

[Jasonrkba]

Still no spark. Fortunately I have another SEM unit in my parts box. I'll try to get to it tomorrow.

 

[Jasonrkba]

I replaced the SEM unit and it runs great. Now I have a second 056 that I replaced the seals on. It ran good before but now I have no spark. The switch wire had no insulation left, I replaced the wire, lined up the timing marks but no spark. This one is the Bosch style?