chainsaw flooding - where to start with troubleshooting

   / chainsaw flooding - where to start with troubleshooting #1  

mjw357

Platinum Member
Joined
Jan 30, 2011
Messages
706
Location
The Sticks, Ohio
Tractor
Kubota B3200
Homelite U10560A chainsaw, cut down a couple of trees, then saw just quit. Fuel filter broke off fuel line inside tank, rotted lines. Replace the fuel lines. Now saw won't start. Checked for spark, gapped plug that's OK. Cylinder is flooded no doubt, pulled cord with plug out and lots of fuel splatters out.

So, anything else to try other than carburetor disassembly? Should I just bite the bullet and drop it off at a shop? Absolutely no carb experience here, so speak plain english.
 
   / chainsaw flooding - where to start with troubleshooting #2  
Rotten fuel line bits in the carb. Might just need to take it apart and clean it out. It's an easy fix.
 
   / chainsaw flooding - where to start with troubleshooting #3  
Agree, clean the carb, if you can get it off, let it soak over night in pine sol, like 3 parts water, one part pine sol, I also fine small copper electric strands invaluable for jet clean and what have you...
The pine sol will make it look.... spic and span (?) inside and out... factory fresh!
 
   / chainsaw flooding - where to start with troubleshooting #4  
remove the carb and hoses and linkages (after making a drawing / photo of how the linkages / holes / and hoses go ) , do not touch the adjustment screws ...

mark the side of the carb and the flat base with a sharp item ( make an alignment mark )

remove the 4 tiny screws on the bottom square plate ... TWIST (carefully to break the seal) and lift the plate off with the rubber diaphragm .

remove the floating needle and any springs ( if it has them ) ...

use a piece of plastic fuel line ( and your mouth ) to blow out the fittings backwards ... or an air gun and compressor if you have them....

look for any pieces of old gas line / dirt etc at the fitting from the tank to the carb ... ( most likely a bit of crud is holding the needle open )

then put the needle and springs back exactly the way you found them ...

put the base back on and the 4 screws ... put the carb back and the hoses / linkages.

leave the plug out ( and ignition OFF ) pull it over several times to clear the cylinder and primary crank case of excess fuel ....

replace the plug and try to fire it up as usual.
 
   / chainsaw flooding - where to start with troubleshooting #5  
Is the plug firing? It won't hit at all at least try a new plug. Oh and make sure it is in the run position.:)
 
 
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