In this video we will look at a Husqvarna string trimmer where the customer complains that it just bogs. We'll go over some simple tune up procedures and basic carb adjustments. #smallenginerepair
Thx alot for that my man !! Thats the best detailed explanation ive been looking for months especially for my 525lst Mark II and finally i got it !! Thx 😎
The term "four stroking" is used to describe a rich condition at full throttle. You can adjust a carb so the engine runs perfectly smooth at full throttle but if you richen it up just a little more it will eventually run so rich that the tone changes. It almost sounds like it misses a beat...kinda like a four stroke engine that only fires every other stroke. I should point out that you can pick up on this same rich condition at idle once you know what you're listening for.
Thats possible but I don't think so. It could have had a lean tune even for hot weather and when it got cold outside that tune would have been even leaner. I've also seen where units sit a while and the fuel starts to gum in the hi and low passages. Fiddling with the adjustments gets things full flowing again. I know that seems weird but I've seen it many times.
@@rooster3019 I knew someone was gonna ask because good running units don't usually just all of the sudden need a carb adjustment...unless there is an elevation or temperature change. I think that might have been a factor here because I saw a lot of lean runnings saws recently as well. This trimmer could have been lean the whole time and our cold snap was just too much.
@@TheGreasyShopRag I was asking in regards to a husky 141 I'm working on. Replaced piston and cylinder, fuel line and filter, rebuilt carburator, new impulse and and intake boot. Starts up, idles but wont rev just bogs.