MS200T Carb fix/Fully adjustable carb with pics

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cjnspecial

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Joined
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The 200T hasn't been running right for a while. It starts easy, idles way up then dies. If you hold down the throttle to keep it from dying, it would scream to over 17,000-18,000 rpm's. If didn't run it hard for a little while, it seemed like it would level out. It didn't do this all the time but it was getting worse and worse. Cleaning the carb and adjusting the H setting didn't help at all. All the rubber (fuel line, impulse line, vent, intake boot) were good. Because it was intermittent, I suspected an air leak and talked to my dealer about testing it and giving him the details on how it was running. He said not to bother bringing it in, to drop by the shop and he had what I needed in stock.
He says the new carbs are crappy and a lot of folks go back with a fully adjustable carb the 020t's use and have not had any issues with them.

Stihl PN: 1129-120-0650 /Zama C1Q-S32
**Note that Stihl also lists a fully adjustable Walbro Carb(Stihl PN 1129-120-0606/ Walbro WT-326D), just not sure if it's still available**
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The carbs are the same except the H and L adjustment screws. Old carb on left, new on right.
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Note the placement of the L adjustment is different. No big deal though.
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Pic of the carb installed. The grommet fits over the H and Idle screws but not the L.
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From start to finish, including pics, it took about 10 minutes. The saw runs perfect now. Hope this helps others out :cheers:



If none of the above interests you, here is a gratuitous pic of homemade buckboard bacon.....Cured boston butts smoked 14 hours with green hickory. MMMMMMMM
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