ms180 frankenstein build

[Redbeard343]

so i was reading on this forum (its a pretty old one https://www.arboristsite.com/threads/ms180-adjustable-carb.74899/) and i have a little experience with chainsaws. have a poulan pro 42cc and a free ms180 that so far ive put in $16 for a new engine and piston. ran great for a year and a half but lately it just bogs whenever i go full throttle, or sort of "revs" itself. I have a muffler mod and intake manifold mod (plastic cover the air filter sits in, pre-filter is modded) and ive got a couple amazon carbs that came with the saw. just recently started thinking i wished there was some sort of adjustable carb then came across that article and found this guy https://www.amazon.com/Carburetor-STIHL-Chainsaw-Replaces-C1Q-S84/dp/B06Y5FMVHS can i swap a ms250 carb onto my 180 with just some parts swapping from the old carb to get the new carb hooked up? been on a tight budget and its either this or getting some chains for the poulan, which currently runs like crap since i got it from my grandfather and it mightve last ran before i was born, been pretty rough and might need a carb if i run it hard but i got it running. Thanks, my first post btw but ive been a lurker for a couple years.

 

[Michael E]

There are chinese adjustable carburetors out there for about 10$ that should be a straight swap.

If your saw suddenly changed behaviour, you might first find out what caused it. Just throwing a carb at the saw might fix it... or not...

 

[Redbeard343]

well the hoses are all recently new, as in a year old new, ive only ever used stihl premixed gas and when it sits i run it out of fuel, air filter and spark plug look good and after pulling the muffler and carburetor i cannot see any marks on the engine. my rebuild used the old crankshaft and it didn't look bad but i had some really bad wear on the old piston and cylinder so those were replaced. i worry about the old crankshaft but there was some fuel i used abouta month ago that was suspicious, mightve been old but was within the timeframe of usage from stihl. so idk, i dont really throw parts at things unless im stumped, and i don't have the equipment to test the vacuum of the tank and lines but it doesnt leak any fuel and the valves are as new as the hoses and clean/free from dirt.