Ahhh yes I got my filter necks mixed up.
Correct, it is from a 288 and is much larger than the stock one.
I have ordered a K&N for it and also a carb rebuild kit.
I found one of the carb end plate screws was stripped so I tapped it out to 4mm. I might do all 4 of the screws actually so they are all the same.
I will try the spacer with the Stihl bar and see how it goes.
News on the 2101..... Its still looking good, will find out on Saturday when the owner visits the shop.
I told the guys in the shop I would go a bit higher if necessary but its a risk on my part. The good thing is that they have a ew sale hinging on him getting some money for the 2101 and are going to try and make it work for all 3 parties.
Old mate gets a new saw a bit cheaper, they get a new sale and i get the 2101 cheap.
These guys are enthusiasts and are keen to see if I can get the old girl running again.
I told them about the 2100cd and they are excited about me bringing it into the shop when its done