Fatboy2017

In the first picture it looks like there is a quite a build up of carbon? Could be carbon damage? What oil and ratio do you run?

I heard of someone used one of these in conjunction with his coil Ignition Coil – Red – 2 Pin | DBRacing DBRACING.CO.UK

What I was suggesting for £10 it's worth trying one of the cheap dual port ones, if it is better then you can make the choice if you want to pay over £100 for a modified OE one. The cheap ones are ok for firewood users but if used as a production / heavy user then of course they won't last as long, I've used them on Husky 55 and 365 and they were ok.

Exhausts are available aftermarket on ebay very cheap, worth buying to try and not to damage the original. When you get the standard one off, the weight will tell you if there is much inside. I don't have personal experience of MM a 361.

I assume you have the early type steel oil pump drive scroll, if you do you need item 21 plus associated spacers etc on parts diagram below, if you can't find one let me know. Probably L&S Engineering can supply the later part but not item 21 as I think NLA now. The later set up as per parts diagram are much better as the oil pump drive only when the chain is running, but you would have to change the oil pump and pump drive and washers etc, or get yourself a 520 parts saw as they come quite cheap and plentiful. Makita DCS 430 520 parts manual.pdfMakita DCS 430 520 parts manual.pdf

This is where the ones I have used came from, I think they all come from the same factory, but who knows! Ignition Coil Module For Dolmar 112 113 114 116 120si PS6000 PS6800 030143040 WWW.EBAY.CO.UK Replace Part # for. We promise that sovle any problems if you had.

Just use the one for example from 6000/6800i, you can use this later coil as a replacement for even early points saws 112 etc. You can find s/h or new ones or use AM ones. I have used both and to be honest I have had 100% success rate ( probably 20 odd) from the AM ones I used. You just have to fit a spade connector on the wire and shave a little off the post to allow the coil to fit flush, it is obvious when you come to fit one. Unscrew and cut HT lead to length. They are about £16 each. Of course fitting AM can be a crap shoot but it's your choice. Just make sure to use NGK BPMR7A spark plugs

All 5 are the same. Same on 116, 116i,120i and 6000i /6800i even 9010 fit. Its possible that the mounting came loose at some time and enlarged the thread in the tank and somebody fitted a mount from something none Dolmar. If so, maybe helicoil and fit new original mounts. Mounts still available from L& S Engineering. Plenty of s/h tanks around, both metal and plastic.

For 40;1 for 5litres add 125ml of 2 stroke oil.

If you're experienced in carb adjustment technique excellent, if not you could follow this procedure in the link below. Again just in case you weren't aware, only cut with the engine on max throttle opening, not part throttle

The 2 stroke oils you are using can effect this. Try to use FD spec oil, or at least FC. Typically these are Echo oil, Husky Motul plus others. ( some of the Stihl oil are not even FD spec so be careful!) Try not to use the cheaper generic oils. I always use the term 'oil is cheaper than metal' . Also the mixture maybe set too rich causing unburnt fuel exiting the motor, plus if carbon is building up it on the screen it is usually building up on the piston and rings as well.

Remove the airfilter and you should see the fuel pipes which go into a single grommet, the breather is separate typically a white Echo type pushed into a black grommet on top of the tank by the carb

Try ROWENA MOTORS 01248 715552 www.rowenacarbs.co.uk

I had a look today but unfortunately it's a Dolmar 100 clutch cover I have' the one that has the brake band inside

Available new for only £14, I'll have a look at the weekend if I have a s/h one