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MS391 Muffler mod

Iggy

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Hey guys, I was asked to do a Muffler mod on a newer MS391. I've done plenty with older ones, the only question I have is about the carb. Are there adjustment stoppers in the carb, if so is there enough room to accommodate the mod or do they have to be removed.
 

DND 9000

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Limiter caps usually have to be removed to get enough adjustment range if modifications on the saw are made.
 

Evan03

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With caps the screws have about 1/8 turn of travel. I was unfourtenate enough to tune one for a buddy. Im like these Limits gota go

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