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Tips on tuning an MS200t


Marko_87
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Had trouble with my 200t today, kept bogging down when I put it on full revs. Took a look at the carb after checking the other usual stuff and found that the gauze in the fuel filter was full of crap so guessing that was the problem. I cleaned it out and put everything back together again. Unfortunately I had got a bit frustrated with it on site and started messing about with the H on the tuning screws, I have tried to put it back to factory settings but not getting anywhere with it! Any tips? 

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5 minutes ago, Marko_87 said:

Had trouble with my 200t today, kept bogging down when I put it on full revs. Took a look at the carb after checking the other usual stuff and found that the gauze in the fuel filter was full of crap so guessing that was the problem. I cleaned it out and put everything back together again. Unfortunately I had got a bit frustrated with it on site and started messing about with the H on the tuning screws, I have tried to put it back to factory settings but not getting anywhere with it! Any tips? 

Spud ? He will be along ..............:)

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Not sure will have a look later, the tuning screws are close together. Think the H may have one of those limiters on it, is surrounded by a plastic cover and only seems to do half a turn, that sound right?

11 hours ago, spudulike said:

What sort of carb? The saw should run with both H&L screws one turn out unless there are other issues although the gauze filter would be a prime cause of the bogging you had.

Are the adjustment screws close together or either end of the carb?

 

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Once the carbs go they are usually knacked.. unless you know how to fix or blank off the accelerator pump I would just buy a new one, they should be about 1 turn out each with the low jet tweaked out between maybe quarter of a turn more and maybe also a slight tweak on the H as they tend to scream with just one turn but only ever seized a couple at the most on that setting and that was probably down to air leaks some where else...If it’s sucking in crap it maybe worth checking the fuel lines for holes and replacing the tank pick up filter.

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