MS201 TC rebuild

[trains]

you wont see anything visible, when they wear, they over fuel, and the computer cant adjust any further.
even just removing them and refitting them can mess up their seal into the carb face where they seal at the end where they deliver the fuel.

Get a new solenoid and filter/ orange fine one, and get back to us.

I assume the new carb was a genuine one ?
did it have a new solenoid with it, or did you just swap over the old one ?
am assuming its a new solenoid with carb, but its easier to ask questions than assume

Just catching up to where your at, the joys of online diagnosis.

 

[Aussie076]

The soleniod came installed in carry.
My take is that the saw is not getting good spark.........i can feel a pulse but no visible spark.

 

[capetrees]

@lone wolf

 

[lone wolf]

I pulled it out to see if anything was wrong but couldn't see anything....i have put back together and still can't get it to start.

If a new solenoid don't work, try a new wiring harness.

 

[singinwoodwackr]

I pulled it out to see if anything was wrong but couldn't see anything....i have put back together and still can't get it to start.

You would never see anything. Those things are pretty complicated inside. There is an exploded view of all 3 around somewhere

 

[singinwoodwackr]

The soleniod came installed in carry.
My take is that the saw is not getting good spark.........i can feel a pulse but no visible spark.

With mtronic you won't see any spark. Even chucking up a drill to the clutch won't do it.
Test all wires for continuity

 

[singinwoodwackr]

Where did you get a carb with solenoid installed? Used? They don't come on a new oe carb.

 

[Aussie076]

Where did you get a carb with solenoid installed? Used? They don't come on a new oe carb.

I brought it online,

I also can see how it could have failed already..........was running and then would not restart.

 

[stihltech]

I use a good sparkplug with a very wide gap to check spark. Best to use recoil starter to turn over.

 

[singinwoodwackr]

So, used, and you don't know if it came off a running saw

 

[Aussie076]

So, used, and you don't know if it came off a running saw

No it was brand new

 

[lone wolf]

No it was brand new

OEM or cheap knock off?

 

[Aussie076]

OEM or cheap knock off?

I believe it's OEM it has all the stihl markings on it.

 

[angelo c]

I'm with Wolfie on this so far...if you have a known new solenoid AND carby then get a new wiring harness. They get wonky with the slightest fray

 

[singinwoodwackr]

I believe it's OEM it has all the stihl markings on it.

That doesn’t sound right. it either has to be nos or off a used saw to be sold online.
either way. Test all wiring for continuity. As suggested, those harnesses can be problematic, especially if off a well unused 201. The wires may look fine but they often get stretched at the front of the handle and the wire inside the plastic severs and it not really noticeable.

 

[lone wolf]

That doesn’t sound right. it either has to be nos or off a used saw to be sold online.
either way. Test all wiring for continuity. As suggested, those harnesses can be problematic, especially if off a well unused 201. The wires may look fine but they often get stretched at the front of the handle and the wire inside the plastic severs and it not really noticeable.

Yup, the harness can give fits when not tested!

 

[singinwoodwackr]

Yup, the harness can give fits when not tested!

I've replaced 2 that did that. Both looked normal

 

[angelo c]

I've replaced 2 that did that. Both looked normal

Yup...the few that I've replaced tested perfectly as well....continuity, ohms ect.
Swaped it out and never looked back . I think the harness is about $20.....hardly worth the time to test it.