Stihl MS170 Help

[Ed Prater]

I have a Stihl MS 170, it was bogging badly, I bought a new oem ( Zama ) Carburetor, and installed, and still the same issue, so I replaced the fuel line and the filter, and it didn't help a bit, it starts right up, but really bogs when trying to throttle up, there are no adjustments on the carburetor, please comment, I am ready to try almost anything.. Thanks in advance.. Ed

 

[merc_man]

Have you tried a new spark plug

 

[czar800]

How's the muffler screen?

 

[a. palmer jr.]

Since you tried everything I'll tell you what might fix it: Buy another new carburetor, this time buy one you can adjust. Zamas are okay but I'd never buy a new one that can't be adjusted. And make sure the pulse opening isn't blocked..

 

[Guido Salvage]

Also check to make sure the flywheel has not moved and altered the timing.

 

[Lightning Performance]

Clean the new carb out. I found turnings in more than one of those fixed high jet china carbs. Is the intake boot clamp broke? Check it.

 

[Adirondackstihl]

Walbro WT-215

Don't forget to remove brass welch plug for impulse.

 

[Cobby08]

I had one that the intake ring on the boot had a plastic mounding nipple that stuck out causing an air leak. Started like Chet and would bog. Clipped the stub off and ran perfecto.


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[pro94lt]

Don't get to deep in it, their 179.00$ new

 

[Fish]

I think he should take out his muffler screen first.

 

[Adirondackstihl]

I think he should take out his muffler screen first.

Yep
Had one last summer that was plugged up.