Big_Wood
westcoast dweller
woke up this morning to a little snow and told myself today was a saw day. currently all my saws are top notch so nothing to do there but i do got a poulan 4200 which has issues. i got this saw at the beginning of the year. it ran ok at first but soon started acting up. replaced the crank seals for the hell of it. being an old saw, it don't hurt. played with that saw for a few days trying to figure it out but couldn't get it to run right. ran pig rich no matter what i did. everything in the carb checked out fine. i believe it was pulling unmetered fuel from somewhere. anyways decided today that i would fit a different carb onto it. had a bit of a selection and decided a WJ39 off a 394 would do the trick. here is the 394 carb installed and functional. the umpulse hole was a direct line up.
the only thing i gotta figure out is to make the idle adjustable without removing the cover and a guide so it's not a chore getting a screwdriver on the H/L adjustment screws. i'm not to worried about it at the moment. see how it runs first and i believe modifying a guide and drilling the case where the idle screw is on the carb will make it good to go. everything else is functional. the plastic high idle lever on this carb was broken but that don't matter cause the poulan throttle has a lock in the handle.
The original choke lever was plastic and the 394 choke hook up on the carb was set differently on the shaft so to make life easy i just took a spare 3120 choke lever i had laying around which i cut shorter and bent to work flawlessly. it don't come off the carb while operating either. oh ya. forgot to mention the throttle also works flawlessly. goes from idle to WOT with no binding or anything. here's a pic of the original and 3120 lever i modified.
a pic of the saw beside the original carb
the one thing that"s stopping me from running it is the 394 carb i used desperately needs a carb kit. my buddy bought a non running 394 and it was soon noticed that an idiot once had this carb apart so i swapped him another 394 carb i had for it. i'll let you guys know how it runs when i get a carb kit. checked the husky dealer and they don't have one. they tell me it could be weeks before they even fill a minimum order
this little project only took about 20-25min. i even threw a new husky fuel filter on the end of a new line for good luck
the only thing i gotta figure out is to make the idle adjustable without removing the cover and a guide so it's not a chore getting a screwdriver on the H/L adjustment screws. i'm not to worried about it at the moment. see how it runs first and i believe modifying a guide and drilling the case where the idle screw is on the carb will make it good to go. everything else is functional. the plastic high idle lever on this carb was broken but that don't matter cause the poulan throttle has a lock in the handle.
The original choke lever was plastic and the 394 choke hook up on the carb was set differently on the shaft so to make life easy i just took a spare 3120 choke lever i had laying around which i cut shorter and bent to work flawlessly. it don't come off the carb while operating either. oh ya. forgot to mention the throttle also works flawlessly. goes from idle to WOT with no binding or anything. here's a pic of the original and 3120 lever i modified.
a pic of the saw beside the original carb
the one thing that"s stopping me from running it is the 394 carb i used desperately needs a carb kit. my buddy bought a non running 394 and it was soon noticed that an idiot once had this carb apart so i swapped him another 394 carb i had for it. i'll let you guys know how it runs when i get a carb kit. checked the husky dealer and they don't have one. they tell me it could be weeks before they even fill a minimum order
this little project only took about 20-25min. i even threw a new husky fuel filter on the end of a new line for good luck 
