Ongoing MS 200T Carburetor Issue

[HandLogger]

I like your thinking, because of the low hour runtime. My 200 had problems with the accelerator type carb already after 50 h or so. I repaired the O-ring that solved the problem for now, but if it occurs again, I'll go the JB weld route to block off the pump circuit, like Parris indicated.

I am glad we are able to solve the problem ourself; I'd hate to add more $$$$ in a Stihl top dollar saw, because of a obviously poor choice for a chinese crap carburator by Stihl. Guess they can afford it.

Cheers, Belgian.

Yes, we went ahead and ordered the "piston repair kit," as well. IF the new C1Q-S16A solves our problem, we'll go ahead and try the accelerator pump repair kit on our existing C1Q-S61D. That way, we should end up knowing exactly what caused our issues in the first place. It won't hurt having the original carb, albeit a patched up carb, around for the future either.

The JB Weld fix has met with mixed results, based on what I've read, but -- if the repaired S61D gives us trouble down the road -- I'll be dialing Mister J.B. Weld's number, no doubt.

By the way, you're right about the MS 361 and the beers. I was in Oostende, back in the day, and the beers "in the square" were pretty damn tasty.

 

[HandLogger]

Subscribing!!

Welcome aboard, SCHallenger!

If you're interested in knowing more about 200 issues, this is a pretty good place to be.

 

[MCW]

Just curious, did they correct that in the MS201 ?

I'd hope so as Stihl would be stupid if they didn't.

Sorry to seem like I've hijacked this thread here but I did a comparo between a new 200T and 201T here with a lot of photos of the carbies etc. I can see why the 200T's have become a hot item as although the 201T is a worthy saw it doesn't hold a candle to a 200T once the 200T's spark arrestor has been removed...

http://www.arboristsite.com/chainsaw/182225.htm

 

[HandLogger]

About your "old" MS 200T

MCW: I just watched the video you posted and everything looks great. I was wondering if the older MS 200T shown in the comparison was the one that your dealer changed from an accelerator pump Zama to the non-accelerator pump carb -- the C1Q-S16A 3YR? In other words, is that the saw you wrote about back on Page 1 of this thread?

If it is, I'm certainly looking forward to getting our MS 200T running with the Zama new C1Q-S16A we have on order. The older saw in the comparison video seemed to eat the MS 201T's lunch, mate. :msp_thumbup:

See ya when I see ya,
HandLogger

 

[MCW]

MCW: I just watched the video you posted and everything looks great. I was wondering if the older MS 200T shown in the comparison was the one that your dealer changed from an accelerator pump Zama to the non-accelerator pump carb -- the C1Q-S16A 3YR? In other words, is that the saw you wrote about back on Page 1 of this thread?

If it is, I'm certainly looking forward to getting our MS 200T running with the Zama new C1Q-S16A we have on order. The older saw in the comparison video seemed to eat the MS 201T's lunch, mate. :msp_thumbup:

See ya when I see ya,
HandLogger

Yeah mate it is the same saw in the video that had the carby change. It runs very well

 

[lone wolf]

There are a few reasons why we are investing in the carburetor first, Lone Wolf:

When we first began having trouble with this particular MS 200T, it could only be rectified by having a super clean air filter installed. This indicated to us that the saw was air-starved (running rich). As I wrote about earlier in this thread, the high-speed (H) adjustment screw on the factory carburetor -- a Zama C1Q-S61D 434A -- was limited at the factory with a plastic cap, a steel post and a "skirt" that is cast into the body of the carb. This "limiting assembly," as I call it, was cut away to free the H adjustment screw for more adjustability and, although this modification did get the saw to run better, it did not restore proper saw operation.

According to what I've read on the AS.com forum, among others, the Zama accelerator pump model carbs -- like the S61D we now have -- are notorious for malfunctioning, so, even if our carb is still good, it will give us a major headache eventually. Add this to more than one recommendation "to swap out what you have for a known good carb," and we thought it wise to get ourselves a reliable carb without an accelerator pump. The carb we've got on order -- a new Zama C1Q-S16A -- cost us just over $60.00 (shipped), so, when compared to what a replacement carb from the Stihl dealer would've cost us (over $100.00), we decided to invest in a "known good carb."

Lastly, we don't own the test equipment that's been mentioned in some of the forum posts. If the carb we have on order doesn't end up rectifying our issue, we will begin researching test equipment. At this point, however, it seems logical to try a reliable replacement carburetor.

By the way, it's a long haul for us to get to a Stihl dealer with a certified repair tech, so we do have an interest in becoming self-sufficient when it comes to our Stihl saws.

Hope this clarifies what we're thinking,
HandLogger

The super clean Air filter thing to me indicates a manifold intake boot leak!
Can you get another carb to try and try it with a restricted air filter?Also you should vac test that saw!

 

[HandLogger]

New Zama

According to the UPS tracking data, the new Zama C1Q-S16A should arrive late tomorrow, Lone Wolf. If aligning the new carb doesn't take care of the symptoms, the next step will be trying to figure out how to test the saw for leaks.

With all of the complaints I've read about the accelerator pump models, I'll be very glad to have the new non-accelerator pump carb (the S16A), regardless.

This thread will be maintained until this issue is resolved,
HandLogger

 

[lone wolf]

According to the UPS tracking data, the new Zama C1Q-S16A should arrive late tomorrow, Lone Wolf. If aligning the new carb doesn't take care of the symptoms, the next step will be trying to figure out how to test the saw for leaks.

With all of the complaints I've read about the accelerator pump models, I'll be very glad to have the new non-accelerator pump carb (the S16A), regardless.

This thread will be maintained until this issue is resolved,
HandLogger

opcorn:opcorn:opcorn:opcorn:opcorn:opcorn:

 

[MCW]

I hope the new carby works or I'm gonna look down right silly

 

[lone wolf]

I hope the new carby works or I'm gonna look down right silly

Naw you wont! That's why I have more than one of those saws so I could swap and see first.

 

[SCHallenger]

MS200T & carb issues

Welcome aboard, SCHallenger!

If you're interested in knowing more about 200 issues, this is a pretty good place to be.

Thanks Handlogger! I'm real interested & finding this REAL interesting. Could be that I may end up with one. FWIW, I have some located.

 

[Dan Forsh]

Naw you wont! That's why I have more than one of those saws so I could swap and see first.

More than 1 would be 2, you've got 6! What do you do juggle with em!

 

[HandLogger]

Look what just fell off of the Big Brown Truck!

Im pretty swamped today, but I wanted to post a few photos of what the UPS man just dropped off ...

Now, I just need to make the time to install and adjust the thing. I'll be back! :msp_wink:

 

[lone wolf]

More than 1 would be 2, you've got 6! What do you do juggle with em!

9 just did not change the number yet!

 

[lone wolf]

Im pretty swamped today, but I wanted to post a few photos of what the UPS man just dropped off ...

Now, I just need to make the time to install and adjust the thing. I'll be back! :msp_wink:

:msp_thumbup:opcorn: That is a very low hour saw right there!

 

[HandLogger]

Replacement Under Way

These two might appear to be fraternal Chinese twins ...

but... here's the difference in appearance. The C1Q-S61D (on left) has the compensator snorkel/elbow on top, while the C1Q-S16A (on right) does not.

Also, note that the -S61D has the small pill-shaped cover above the center of the choke opening, and the -S16A does not -- hallelujah, no friggin' accelerator pump!! :msp_thumbup:

... now how does all of this go back together?

 

[HandLogger]

That is a very low hour saw right there!

The nature of our work doesn't require top-handle saws on a daily basis, so our bigger saws see more use -- but they are all meticulously cared for.

 

[lone wolf]

Im here ,you got it?

 

[lone wolf]

Dont forget the two metal inserts that go on before the carb.

 

[HandLogger]

TWO Metal Inserts

Dont forget the two metal inserts that go on before the carb.

Do you happen to have any photos. Lone Wolf? I know we have one metal (gold) insert that goes over the two carburetor mounting bolts -- before the carb is mounted -- but where is the second one?