MS 880 Flywheel

[timbernut]

I’m just wondering if anyone else on here has had this problem with an 880 (or any other saw for that matter): I have an 880, that’s not done a huge amount of work, it wouldn’t start mid job so I followed usual procedure of plug out: no spark, new plug: no spark, wire from coil to switch unplugged: no spark 

Diagnosis: coil fooked (not uncommon as had one go on brand new ms200 yrs ago and was told this)

Fitted new coil (£100 odd): still no spark

much head scratching then when checking air gap with flywheel noticed one of the magnets not working, presume this is the cause?

pissed me right off as need it tomorrow on a couple of large oak fells and as I type this estate manager has texted me to say large cedar of Lebanon at the hall has collapsed this morning, 6’ diameter and was due survey from a colleague this week!

[Haironyourchest]

You can recharge flywheel magnets, if you take it to a shop that offers that service they could do it for you. Or there are homebrew remedies. Whether they work or not I don't know, but it's interesting. Here's a YouTube clip of a guy using a welder to recharge them. There's also a trick where you get the magnets out if an old hard drive and leave them in for a week, and they supposed to give some of their charge. 

 

[timbernut]

Interesting, will give it a go, thanks