Stihl (1993) 039 hard to start-floods

ladnar

ladnar

ArboristSite Lurker
Joined
Sep 27, 2021
Messages
22
Location
Brookings Oregon
Hello,
I am new to the forum, although I've been looking at it for a long time, I just joined.
I have Stihl 039 (1993) very hard to start, runs fine after starting and will start again, pull it 6 or 7 times on full choke and it locks up, with fuel in the cylinder, I guess, spark plug comes wet, pull it over with no plug, to clean out cylinder, dry the plug out, do the same with half choke, same result, with no choke, just won't start. Maybe i'm just getting old. Any ideas why it would flood? Lots of compression it's a beast to pull on, and sometimes it kicks back and about rips my arm off.
Any ideas would be greatly appreciated.
 
BuckthornBonnie

BuckthornBonnie

ArboristSite Guru
Joined
Aug 26, 2013
Messages
731
Location
Penn Yan, NY
Yep. Carb rebuild with a close look at the needle seat area. Upgrade the fuel filter and check the fuel and impulse lines for cracks. In my experience, saws that are hard to start typically require some fuel system maintenance.
 
ladnar

ladnar

ArboristSite Lurker
Joined
Sep 27, 2021
Messages
22
Location
Brookings Oregon
What would you all think about just replacing carb. with a "new" chinese one from ebay about $20. might be cheaper and easier than rebuilding. Just a thought.
Let me know what you think. I have used china carbs on Briggs and Honda engines and weedeaters, always worked good and CHEAP.
Thank you for your replies.
 
Vintage Engine Repairs
Joined
Aug 12, 2019
Messages
3,736
Location
Australia
What would you all think about just replacing carb. with a "new" chinese one from ebay about $20. might be cheaper and easier than rebuilding. Just a thought.
Let me know what you think. I have used china carbs on Briggs and Honda engines and weedeaters, always worked good and CHEAP.
Thank you for your replies.
China carbs are very hit and miss, I have had terrible luck. My advice is just install an OEM carb kit.
 
Campin' Cutter

Campin' Cutter

ArboristSite Member
Joined
Sep 15, 2021
Messages
51
Location
USA
I personally try to stay OEM as much as possible. A carb rebuild kit should be equivalent to or less than the price of buying an aftermarket carb.
 

Latest posts

Top