Hello Gents, I have an early 80s Jonsereds 52E that is in fantastic shape was hardly used it lost spark one day. I still have a little spark on the spark tester but not enough to fire the saw. I checked the wires coming from the module they were missing the insulation it got hard and fell off. I repaired that with some liquid electrical tape and heat shrink tubing. Still the same little spark. The connection under the flywheel cover is fine. First question, is there a way to check the module with a multimeter? Second question, the flywheel has 4 magnets but only two of them actually have any magnetic attraction. The other two have very little almost none. Are all 4 magnets supposed to have very strong attraction? If I cant figure this out I'm going to swap in the points, condenser and coil from the 52 I have, I know they work fine. Then unpot this module to see exactly what's inside. Thanks in advance for your help.
Jonsereds 52E problem
- Thread starter dsterling
- Start date
Help Support Arborist Forum:
- Joined
- Feb 17, 2009
- Messages
- 16,680
- Reaction score
- 15,902
- Location
- Beautiful Rockbound Coast of Maine
If you already have all the parts to do the conversion I'd go that route. These old modules are getting harder and harder to come by and generally spendy when you find one. That said generally when these modules fail they're just done...no spark. Sounds like you covered all the usual problem points but you might want to look at the connector to the sparkplug.....these sometimes have only a partial connection inner core of the wire which can cause a weak spark.
- Joined
- Feb 17, 2009
- Messages
- 16,680
- Reaction score
- 15,902
- Location
- Beautiful Rockbound Coast of Maine
Check it? Well you look at it, touch it, fondle it,, see if it's looks be aligned properly with the plug wire.....not rocket science..
