Stihl 194

   / Stihl 194 #1  

Tarnold

Bronze Member
Joined
Oct 18, 2013
Messages
98
Location
Ellijay ga
Tractor
Ls 3038h, ford 1900
Ran perfect last time. Now, starts first pull and will idle forever. BUT as soon as I pull the trigger it dies. Restarts first pull, idle but can’t pull trigger.
Ideas?
 
   / Stihl 194 #2  
Open L side up some.

How old and do you run ethanol mix?
 
   / Stihl 194
  • Thread Starter
#3  
Less than 2 years, I’m 77 and don’t run them much. Yes to ethanol.
 
   / Stihl 194
  • Thread Starter
#4  
Opps, fat fingers it’s a 193 and it’s no ethanol.
 
   / Stihl 194
  • Thread Starter
#6  
This unit doesn’t have a screen, just a little baffle screwed on the side of the muffler. Tried running with baffle on and off, no difference. Checked fuel lines and can see no cracks. Ran H and L screws in most any combination and no constant high speed. Seems like the H screw only has about 3/4 turn in to out. Is that right?
 
   / Stihl 194 #7  
Change the spark plug. Most likely not the problem but worth a try. I’ve had one spark plug fail and it was a Stihl MS 250. It would also idle but not rev up well. If you have the muffler off take a look in the exhaust port and make sure the piston isn’t scored. After that I’d take a look at the carb, take it apart and look for dirt and put it back together.
 
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   / Stihl 194 #8  
I'd try replacing the fuel filter on the pickup tube in the fuel tank.
 
   / Stihl 194 #9  
IPL shows 2 mufflers. 1 has a spark screen behind the deflector held by 1 fastener and hinge.

If that checks out I still think open L some. See it so many times when the diaphragm starts getting old and stiffing up.

Little stihls I even see it on new ones as tune is so lean.
 
   / Stihl 194 #10  

Something I try in everything before tearing it apart is the Mechanic in a bottle. Best stuff I have found . Even Walmart carries the stuff now . Follow the directions and within a hour I bet it will run . Make sure your chain break is off and air cleaner not plugged . I think MIB is the best stabilizer for gas also . Good luck 👍
 
 
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