What in the world is this???!!! MS661 related.

[blsnelling]

I took the cylinder off a MS661R yesterday in order to port it. What I found is unlike anything I've ever found in a saw before. Look what was in the intake boot! Talk about impeding air flow!!! This saw has been used, and surprisingly didn't run that bad, according to the owner. I sure would love to know what they are and how/why the got in there!

Two large rubber "washers" where stacked on top of each other, slightly folded, and tucked into the intake boot.

 

[redoakneck]

Are those on the IPL??? Suspecting not. Weird!

Time to call Bryan??

 

[SAWMIKAZE]

Wowsers.

 

[blsnelling]

Are those on the IPL??? Suspecting not. Weird!

Time to call Bryan??

This saw came from California.

 

[Outlaw5.0]

I'm guessing those parts got mixed in with the intake boots and got lodged in that boot. Then made it through the process without being seen.

 

[farmer steve]

This saw came from California.

probably some wacky CA emissions thing .

 

[woods works]

Well obviously they are restrictor plates for racing saws in California. Required by the NCSRA.


Or, flashing from the molding process that missed the QC inspection.

 

[blsnelling]

I'm guessing those parts got mixed in with the intake boots and got lodged in that boot. Then made it through the process without being seen.

Two of them? Stacked neatly on top of each other? Then folded and tucked in the boot? Just sayin', lol. I can't imagine it being done on purpose, but wow, is this odd!

 

[blsnelling]

Or, flashing from the molding process that missed the QC inspection.

That possibility was suggested by the owner. It does seem to be the same kind of rubber. If they had been in the bellow of the boot, I would have found that much more likely.

 

[showrguy]

Another case for the official CSI (chain saw investigator).... Mr. Snelling

 

[o8f150]

maybe to keep the boot more ridged so it wont collasp

 

[mp5n]

They appear to be molded. Were they positioned in the bellows of the intake manifold? If they were it may be something to reduce the power to through CA emissions requirements.

 

[singinwoodwackr]

They appear to be molded. Were they positioned in the bellows of the intake manifold? If they were it may be something to reduce the power to through CA emissions requirements.

Actually it made the emissions worse...bad carbon fouling. I doubt they got there on purpose. Saw bogged in medium wood with 28 but ran ok with the 42, go figure. Sure glad I sent it out

 

[angelo c]

That's a responsible adult saw....the second "gasket" was fer ifn the first one broke...

Oh wait...looks like he broke through both....

 

[Chris-PA]

"What in the world is this???!!!"

Brad, that's what's called quality German manufacturing. You pay the big bucks and you get extra parts!

 

[tacomatrd98]

Husky planted an employee in Stihls facility to eff stuff up till they can catch up with a 90cc auto tune

 

[blsnelling]

They appear to be molded. Were they positioned in the bellows of the intake manifold? If they were it may be something to reduce the power to through CA emissions requirements.

They were laying sideways, positioned just as you see them in the pics.

 

[blsnelling]

Actually it made the emissions worse...bad carbon fouling. I doubt they got there on purpose. Saw bogged in medium wood with 28 but ran ok with the 42, go figure. Sure glad I sent it out

I think that had more to do with the oil you were using. This was the hardest carbon I've ever seen. IIRC, Klotz Super Techniplate is known to carbon up a saw. Someone correct me if I'm wrong.

 

[Outlaw5.0]

Klotz R50 made my saw look terrible after only a few tanks. I don't think we run our saws hard enough compared to motocross bikes.

 

[Roll Tide]

Oh lord that's nasty for a new saw.