Are you mixing it richer than what is recommended? That may cause it to throw oil out of the muffler.

 

Nope mixing 50:1. It's not leaking out the muffler exhaust port and the spark arrester is clean. It's like it's leaking it where the muffler is crimped together. Ill try and get a pic up of it
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My 128ld was doing that and it's because I wasn't running the rpm's up high enough. I didn't believe my dealer when he told me that was the issue, but since I have been doing that, it has cleared up. So that could be the answer??

 

The dealer is tellin' you the TRUTH! Why do you think they have a line cutter on the guard? Prolly removed the guard, didn't ya??? Usually that voids the warranty!
As was mentioned, too long a line creates too much drag and limits the top no-load RPM, which trimmers need to run efficiently, and it helps with the cooling between cutting cycles. It bogs the unit.
So, do what ya want!

 

I know that running too much line will bog it down but I run both trimmers the same way and am having problems with the new one. Yes the guard is removed and that's fine if it voids warranty I prefer trimming without it. However I think their saying that is why it's leaking oil sounds fishy to me
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I know that running too much line will bog it down but I run both trimmers the same way and am having problems with the new one. Yes the guard is removed and that's fine if it voids warranty I prefer trimming without it. However I think their saying that is why it's leaking oil sounds fishy to me
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Do your own test, run it for a few days like the maker says to run it, wide open... see if it clears up, if it doesn't then you can complain some more..lol.

they make high torque gear heads for people that like a 20"+ weedeater path, they do not spin as fast, but negate the negative effects of that abuse, like towing in granny gear instead of overdrive, it makes a difference. These engines are basic, there is no way for it to compensate for how you want to use it.

Like when you ate chilly the other night, next day you pick up something heavier than usual and ya sharted unintentionally... basically the same thing lol

 

Gosh that's annoying, you need to get that taken care of because of more reasons than that but being that it's a new trimmer under warranty I would go ahead and follow the dealer's recommendation. Do I think it's BS, doesn't matter, so long that trimmer is under warranty it's their baby. So follow their instructions and run the right length string with the guard on, then if it doesn't clear up you can take it back to them.

 

Sounds like you got your mind made up already. So keep looking for the answer you want. Good lord, some people are clueless. Put a thermocoupler on the plug. Check how the operating temp skyrockets with too long a line. You unit is overheating slick. Your dealer seems to know that already. This one shows an issue. The others dont. So what?

 

Sounds like you got your mind made up already. So keep looking for the answer you want. Good lord, some people are clueless. Put a thermocoupler on the plug. Check how the operating temp skyrockets with too long a line. You unit is overheating slick. Your dealer seems to know that already. This one shows an issue. The others dont. So what?

i'm confused by your statement. their paperwork says specifically that due to a lack of guard the extra line is not allowing the engine to get hot enough and therefore not burning cleanly. It isn't blowing much smoke, and the actual exhaust port is clean, but theres oily residue all on the muffler. apparently all this due to some January ruling by the EPA tightening restrictions. sounded like a BS claim to me so here i am asking the question. I should not have to run the trimmer wide open all the time either like they say. the bigger point is 2 trimmers used in the same manner, same fuel, same oil, one is leaking oily sludge which isn't normal. IF the EPA did change something that might explain things, if not then i need to look elsewhere

 

The engine is laboring due to overload. Operating temps go up, way up. Plug temps can go up over 100 - 120 degrees with just 2'' too long. Clutch drum temps also go up which transfer to clutch then crank and so on. Their claim is wrong.The problem is not that is not coming up to operating temp. You're overloading an engine that's not even close to broken in. Cooking it. Quite a few new units might clog screens once or twice, but then, after break-in, clean up. Rest assured, your sludge will turn into deposits soon enough. Some trimmers (FS90 FS110) have the power to turn heads with 7" of line out and don't seem any worse for wear. What I don't understand, the manufactuers design these units to be run with a specific amount of line. Is there a secret society of landscaping engineers that tell you guys otherwise? LOL

 

try changing to a different brand of oil. stil ultra is very rich oil and isnt burning cleanly. also try adjusting the carb leaner. your dealer is full of bs. i had one of my fleet of huskys do this too. replaced the carb and the prob went away . its was worse with synth oil. dino burner cleaner

 

My old one has been running with no guard and longer line with absolutely zero issues...runs like a champ. It'll bog if I bump it TOO much but I mainly like it for the edging visibility. It ran better today and didn't seem to leak anymore sludge but it doesn't run as well as the old one still. It's just not nearly as responsive and I can't seem to tune that out. My old one I've run hard and pulled the plug and it looks fine...in my motocross days that was a good indicator of combustion chamber temps.
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my original carb was defective from day one. adjustments didnt sole it. i replaced carb-only 25$ . problem solved. runs clean like the others

 

replaced the carb yesterday, the leaking oil has gone away. still runs like crap no amount of tuning will make it better. It'll bog down when giving it juice, and doesn't idle or run consistently. idle speed changes everytime it goes back down to idle. flip it upside down to edge at part throttle and it'll bog and cut out. basically same problems as before, even with the guard on and ''correct'' length of line. starts fine but its annoying having a trimmer that doesn't have snappy response and wants to die everytime you go to give it some throttle.

 

replaced the carb yesterday, the leaking oil has gone away. still runs like crap no amount of tuning will make it better. It'll bog down when giving it juice, and doesn't idle or run consistently. idle speed changes everytime it goes back down to idle. flip it upside down to edge at part throttle and it'll bog and cut out. basically same problems as before, even with the guard on and ''correct'' length of line. starts fine but its annoying having a trimmer that doesn't have snappy response and wants to die everytime you go to give it some throttle.

I agree it is annoying to have a trimmer that isn't responsive.

 

not sure where the problem could be. my old one runs like a top. this one just can't make up its mind how it wants to run. I can get it to run fairly good on the top end but its the idle and low speed i can't get to run right, and then in the midrange it wants to stumble sometimes.

 

Swap the carbs between the two trimmers--see if problem follows carb--at least you can zero in on problem.
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i will try that next. its weird when i flip it upside down it runs real bad, and if it starts missing and stumbling, flip it back over and it clears up. even on a full tank of fuel. 2 stroke should run fine in all positions

 

Do you have new fuel lines and grommets and fuel filter on this unit.
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its literally brand new, only had about 12-15 tanks run through it

 

Could be bad gas. Muffler screen stopped up. Fuel filter clogged. Or your not adjusting carb right. You say you put on new carb. Was the intake gasket good. Did you make sure it was put on right. Also didnt you say you checked case for leaks right.
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It's under warranty, take it back and tell them to give you a good one, doesn't matter if it's brand new it can still have defective parts but once you try and fix it the machine is yours so take it back before you own it.