Ordered. Thanks so much foggysail!
SUCCESS!!! Just repaired Stihl 045/056 Bosch electronic ignition!!!!!
- Thread starter foggysail
- Start date
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Coil wires screw onto the post, then you feed the wires (kill & HT) through the grommet with a bit of lube and the coil loose. Set the coil over the shaft and into its mount as you pull the wires through. Probably the biggest PITA on that saw series.
It helps to push a pick or an awl into the HT lead end to get a "starter" hole.
You do have to remove the boot and clip at the plug...
Mike53
ArboristSite Lurker
Can't even get the b*astard thing to start today, still got a fat spark but I suspect the plug isn't wonderful and is struggling to spark with fuel round it. Tried to check the other end of the HT lead but unfortunately having heeded the earlier advice and tightened the flywheel nut very tight I now can't get the flywheel off, even with my puller. Just one of those days...
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Mike53
ArboristSite Lurker
Shall have to pick some up, I tend to make a point of not keeping it, too tempting to get into the habit of using it! Not gonna stress over it too much until I've got a brand new plug and can eliminate that as a culprit.
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Mike53
ArboristSite Lurker
Yeh I think this 056 is severely flooded now so may need a little starting fluid to help it burn off the excess fuel!
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longearrider
New Member
Hello everyone longearrider hear just joined the forum new to all this high tech stuff I have an 056 equipt with sem system doesn't run when hot do I need to do the same thing to it or what maybe I missed some info hope you can help thanks
Rokon
ArboristSite Guru
Hello and Welcome!
From all the reading in this post, this repair only applies to the BOSCH version of ignition.
Now, I hope someone can figure out the SEM problem as I have 4 dead SEM coils to one 2101 saw :-(
towingace
ArboristSite Guru
Hey bro, you're replying to a suspicious looking post.
longearrider
New Member
UOTE="towingace, post: 5148035, member: 113393"]Hey bro, you're replying to a suspicious looking post.[/QUOTE]
Ok so what does that mean ?
Ok so what does that mean ?
Mike53
ArboristSite Lurker
Well, new plug and starting fluid and still no sign of life 
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Mike53
ArboristSite Lurker
But still a good blue spark...
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Well, new plug and starting fluid and still no sign of life
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Your saw has good compression?
Mike53
ArboristSite Lurker
Yeh plenty of compression, I did the fix successfully and got a day of use out of the saw but it's now died again
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Pull the starter and fly wheel and clean around the module as best you can to improve air flow, this might buy some time for the ignition but it's only a matter of time before it fails completely!
..........Sorry.
How are you testing the spark?
Mike53
ArboristSite Lurker
Rested on the top cover, update however is that spark has now gone completely.
Gonna have to pull it apart and re-check everything I've done
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Gonna have to pull it apart and re-check everything I've done
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Try some other plugs!!.... I've seen new plugs test fine on a plug tester but fail under compression.
Mike53
ArboristSite Lurker
Okay, well I bought two new plugs so I guess I'll give the other a try!
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