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Stihl ms-660 vs ms-880

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tlandrum:
the exhaust exit on the muffler needes to be 75% the size of the exhust exit on the cylinder. pull the limiter caps on the carb and tune the saw with a tach to 13500-14000. without a tach tune it til it four strokes or burbles.

Rocky_J:
There are a multitude of steps to take before buying an 880 to cut firewood. You must be a monster of a man because most men aren't man enough to swing an 880 around all day long.

There is still a ton of power available in the 660, especially the newer ones. There is also a ton of speed to be gained through improvement of cutting style and sharpening technique. 80%-90% of chainsaw users are not very good at sharpening chains. If you're one of the minority who are very good, then you probably wouldn't be considering an 880 for cutting 16" firewood (unless you were into hotsaw competitions).  8)

windthrown:
One thing about the 880; it is a rough saw to run from the very high vibration levels. Running the 880 almost rattled my teeth fillings out. The 660 is a lot smoother. The 660 is 6 pounds lighter than an 880. 880 is also a bear to start; harder than a 660. Husky 395 was a lot easier to run as well.

I would add a dual port muffler to your 660 and re-tune the carb to richen up the H jet. I added a DP muffler to my 066 and it made a huge difference. I ran my 066 with a 32 inch bar in Doug fir after the DP muffler mod. No problemo.

DP muffler cover only for the 660 Mag: Stihl part number 1122 140 0800
DP muffler base and cover for the 660 Mag: Stihl part number 1122 140 0603

DP muffler cover for the 660 & 660 W: Stihl part number 1122 145 0801
DP muffler base and cover for the 660 & 660 W: Stihl part number 1122 140 0602

7845Robert:

--- Quote from: windthrown on February 24, 2010, 11:43:52 pm ---One thing about the 880; it is a rough saw to run from the very high vibration levels. Running the 880 almost rattled my teeth fillings out. The 660 is a lot smoother. The 660 is 6 pounds lighter than an 880. 880 is also a bear to start; harder than a 660. Husky 395 was a lot easier to run as well.

I would add a dual port muffler to your 660 and re-tune the carb to richen up the H jet. I added a DP muffler to my 066 and it made a huge difference. I ran my 066 with a 32 inch bar in Doug fir after the DP muffler mod. No problemo.
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Thanks you the info, I think I will work on my 660, dual the muffler and retune, will see what that does.
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ladylake:
Set a little on the lean side you'll have no torque on any saw , just high RPM's.   Steve

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