3.5 horsepower MS260?

[MaddBomber]

I've been surfing around the internet, and came across a 2.6 kW (3.5 hp) MS260 C. I've looked and cannot find the difference between the 3.5 hp and the 2.4 kW (3.2 hp) versions. I do know that a number of countries (not USA) still offer the 3.5 hp MS260. I am assuming it is exhaust and carb tuning, but I am not sure. Anyone out there know the difference, or is it just like muscle cars of the late 1960s..... Under-rated for legal reasons?

 

[computeruser]

My guess would be the absence of a choked-down muffler.

 

[nmurph]

I've been surfing around the internet, and came across a 2.6 kW (3.5 hp) MS260 C. I've looked and cannot find the difference between the 3.5 hp and the 2.4 kW (3.2 hp) versions. I do know that a number of countries (not USA) still offer the 3.5 hp MS260. I am assuming it is exhaust and carb tuning, but I am not sure. Anyone out there know the difference, or is it just like muscle cars of the late 1960s..... Under-rated for legal reasons?

the muffler is more restricted in the US version. that part is easy enough to correct. you will then need an adjustable carb to tune it correctly. i think it is a walbro 194 (?).

 

[MaddBomber]

My MS260 has a modded exhaust. I have a 194 adjustable carb. Do you think that puts me near the 3.5 hp mark?
I love that saw, and use it the most out of my others.

I did an exhaust very similar to Erick, but with a larger cut-out.

 

[nmurph]

my brother has a husky 55 which is rated at 3.4. i MM my 026 and with the same chain, his saw still feels a little faster down low. when they are cutting in the upper range, i would say they are comparable.

 

[rburg]

I believe up until about 05 the 026/260 was rated at 3.5hp in the US.

 

[Stihl Crazy]

My 260 is rated at 3.5 but I think it has a bit more.
http://www.youtube.com/watch?v=fjwlebiHkYw

 

[SawTroll]

the muffler is more restricted in the US version. that part is easy enough to correct. you will then need an adjustable carb to tune it correctly. ....

Yes!

 

[SawTroll]

My 260 is rated at 3.5 but I think it has a bit more.
http://www.youtube.com/watch?v=fjwlebiHkYw

The CA and EU ones sure does - but yours doesn't count, LOL....

 

[Stihl Crazy]

Our saws come from the US now (except Arctic saws) so we have the lower rated ones also.
http://www.stihl.ca/STIHL_Products/ViewProduct.aspx?ProductID=3

 

[SawTroll]

Our saws come from the US now (except Arctic saws) so we have the lower rated ones also.
http://www.stihl.ca/STIHL_Products/ViewProduct.aspx?ProductID=3

Oouuuuuch - bad news...:jawdrop:

 

[2000ssm6]

My 260 is rated at 3.5 but I think it has a bit more.
http://www.youtube.com/watch?v=fjwlebiHkYw

Yup, that is rolling on out pretty good!

 

[2000ssm6]

Also between the muffler and air filter, .3hp can be made up easy.

 

[Evan]

you can mod fixed H 026/260

you just have to mod in small increments untill she blubern on the top like she should be, think of the muffler as the H jet and your kinda directly adjusting the H by opening up the muffler outlet.

dont mod the muffler if the saw is already burning the plug carhart brown or is alread blubering just right.

but chances are its very rich from the factory. elevation also plays a key to. my saw unmodded ran very rich at 3200. at sea level it might be just right for you

 

[huskystihl]

you can mod fixed H 026/260

you just have to mod in small increments untill she blubern on the top like she should be, think of the muffler as the H jet and your kinda directly adjusting the H by opening up the muffler outlet.

dont mod the muffler if the saw is already burning the plug carhart brown or is alread blubering just right.

but chances are its very rich from the factory. elevation also plays a key to. my saw unmodded ran very rich at 3200. at sea level it might be just right for you

Exactly. I just modded a 270, it took about 10 minutes. I pulled the muffler and snuck a 1/2" drillbit under the deflector and done deal. Mine came very rich as well, to the point I had it leaned out almost against the cap just so it would cut decent. After the mod just turned it back against the cap to the rich side and good to go, runs like a whole different saw. In fact I was crosscutting red oak with the bar burried last night and it ripped through it more like a 361 than a 270. Great saw with a simple adjustment but extremely limited with the stock exhaust.

 

[MaddBomber]

Walbro 194 vs 824????

I always assumed (yes I'm ignorant) that my MS260 Pro had a WT-194 carb on it. So I went poking through my IPL and it lists 4 different carbs (WT-426, WT-427, WT-590, WT-403A). I have bot H and L adjustments, so I knew it wasn't the WT-403A. I pulled the carb off, and found that it says WTE-824. This carb isn't listed in the IPL, and I can find very little info on it. Is the WT-194 a better carb?

My saw makes decent power and I am happy with it, and wouln't switch unless i'm missing out on easy power.
Also what's up with the WTE? I know most Walbros for 50cc are the WT and HD. I can't find any listing for any WTE carbs anywhere (only WT/WTA).

 

[smokinj]

My 260 is rated at 3.5 but I think it has a bit more.
http://www.youtube.com/watch?v=fjwlebiHkYw

Id have to agree with you nice 260

 

[Guarddog1]

My 260 is rated at 3.5 but I think it has a bit more.
http://www.youtube.com/watch?v=fjwlebiHkYw

That seems to cut pretty quick what size bar what tooth drive and what type chain is on that puppy?

 

[Evan]

mine still has the fixed H and is running this muffler with a slight burble on top at 3200 and alittle more burble at 8000.

the factory exit port is now gone. i have adjustable carb on my 260 project saw , i thought about adding second 3/4" tube and swapn the carb on but i decided this is plenty for limbing saw its actualy seen big wood to

 

[Stihl Crazy]

That seems to cut pretty quick what size bar what tooth drive and what type chain is on that puppy?

It has a 16 inch bar, 7 tooth 3/8 rim and has 73 Oregon chain.