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Danarm Chainsaw starting issue

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I bought another Danarm 55 MK2 chainsaw at the weekend & have a starting issue that I believe is electrical or timing. It has fuel & when you pull it over reasonably quickly it has a spark. It does however snatch back when you pull it over & takes forever to start. I am thinking that the timing is advanced  more than it should be. My other saw has condenser & points & has a spark at low revs as they do with points. This one has points, but where the condenser is on the other saw, this one has this small yellow box. Has anyone seen this before & can throw some light on this problem please.

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Someone has indeed put an electronic chip in it (Nova 2 ?) they are notorious for lasting for as little as 5 minutes to several weeks. Remove it and replace with points and condenser. I have the timing specs if you need them

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The yellow module looks like the Atom that was sold in the UK in the 1980s and, I believe came from Australia. Unlike the “ one size fits all” Nova and Meco modules the Atoms came in colour coded specific applications. We used to fit lots of them and I have no recollection of reliability issues. Somewhere I have a list of all their different colour applications .

I still fit Meco modules when rebuilding Villiers F12 and F15  engine’s on vintage Ransomes cylinder ( reel) mowers etc. 

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I have just found an Atom application list and interestingly it does not mention Yellow at all , so the module on your danarm may not be an Atom. . It shows Brown as being specifically made for Chainsaws, brushcutters and nylon line trimmers.

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i joined a US based chainsaw group & an English guy was sure it was an Atom & mentioned that they advance the timing too far and cause this problem. He doubted that there would be spares to return it to Condenser & points but a small company in Worksop claim to have them in stock. Only problem is they are not replying to me at the moment.

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If, as you say , the points are there and they are in reasonable condition , the condenser should not be a problem  as to a great extent most small engines are not too fussy about the exact farad rating. The main issue will be finding one small enough to fit.  I recently found two on fleabay that fitted under the flywheels of two Kawasaki engines. They were Denso, in their original packing and advertised as being suitable for a certain model of Datsun (Nissan) car. At the worst, the condenser can be mounted remotely from the coil and points.

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