660 muffler differences?

[j.williams]

Could someone tell me what the difference is between muffler 1122 140 0604 & 1122 140 0603. Which would be better for adding the DP cover on?

 

[Stihl-Pioneer]

The 0603 is the dp muffler assy

 

[j.williams]

I thought 1122 140 0800 was the dp cover. So is 0603 the muffler and cover together?

 

[Stihl-Pioneer]

Yes 0800 is just the cover, 0603 is the muffler and cover together.

 

[Tzed250]

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Info about the 0603:

A while back I asked a question in this thread:

http://www.arboristsite.com/showthread.php?t=59011

The question was about the part number for the muffler with the large outlet, the one used before OSHA strangled the saw. No one seemed to know what the part number was.

After looking in the IPL I decided to order the whole assembly that included the dual port cover. I thought there might be a chance that they would match. The gamble paid off.

Part number 1122 140 0603 includes the large outlet muffler, the dual port casing, both spark screens, and the screw for the front screen.

A pic of the large outlet muffler

It would be great if Stihl would sell an MS660 Power Up kit, like this one:

Pictured are the:

Large outlet, dual port casing muffler (1122 140 0603)
Limiter caps (4203 121 2700)
Limiter cap puller (5910 890 4500)

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