Short lived happiness with my MS360

[blsnelling]

I would not make a practice of free revving it without B&C.

 

[Overkill338]

I would not make a practice of free revving it without B&C.

Ok, did you watch the video though?

 

[blsnelling]

Ok, did you watch the video though?

Yes. It sounds like it's 4-stroking but post another video with the B&C installed.

 

[Overkill338]

Yes. It sounds like it's 4-stroking but post another video with the B&C installed.

Ok, it will be tomorrow. I'll put the 24" back on it. That's what I was trying to tune it to run.

 

[TheTone]

Don't just randomly starts replacing parts, even the rubber ones. Vac/pressure test and visually inspect all rubber parts. Replace what's needed. Any used saw should be gone through entirely and EVERYTHING inspected.

Agree. On used saws with OEM rubber lines I draw full vacuum and bend them all around. Then the same with pressure. If they are supple and hold P&V, I would rather leave them in than put in aftermarket rubber. Especially with Stihl dealers charging $15+ for fuel lines.

 

[Yukon Stihl]

Then why did I need one?

You don't need a tach,you may want one because it is another tool to use to get to the end of a successful rebuild/tune.
But you can do the same by ear.You just can't brag about RPM's without a tach

 

[Overkill338]

@blsnelling

 

[blsnelling]

Definitely 4-stroking.

 

[Overkill338]

Definitely 4-stroking.

is that what it's supposed to do? Would you keep running it until it breaks?

 

[blsnelling]

No, don't even start the saw again until you've repaired the new damage and fixed whatever is wrong. No amount of scoring is ok. It creates high spots and is even more likely to score the next time you run it. You have an issue if it won't 4-stroke at 1 1/2 turns out.

This.

 

[Overkill338]

This.

You are a snarky fella arentcha Brad lol

 

[Overkill338]

You don't need a tach,you may want one because it is another tool to use to get to the end of a successful rebuild/tune.
But you can do the same by ear.You just can't brag about RPM's without a tach

Bragging I will lol My MS241 topped out at 13,500 rpms

 

[captain dangers]

I'm of the subjective opinion that the original problem/scoring wasn't caused by leaking or lean mixture , but by the engine drawing in flaked off carbon from the exhaust port? as you can clearly see where carbon has flaked off, this is a very common fault on stihls, and I put it down to the restricted exhausts, I have started drilling the ends out of the baffle to allow a better air flow which in turn, I hope, will keep the cylinder exhaust port clean of carbon build up ? it does release extra power also, but you will need to richen up the mixture . CD

 

[Overkill338]

I'm of the subjective opinion that the original problem/scoring wasn't caused by leaking or lean mixture , but by the engine drawing in flaked off carbon from the exhaust port? as you can clearly see where carbon has flaked off, this is a very common fault on stihls, and I put it down to the restricted exhausts, I have started drilling the ends out of the baffle to allow a better air flow which in turn, I hope, will keep the cylinder exhaust port clean of carbon build up ? it does release extra power also, but you will need to richen up the mixture . CD

I hadn't given any thought to the exhaust port carbon.

 

[Totembear]

Replace the piston!! While your in there inspect impulse, intake boot, muffler and bearings. That should get you on the safe side of things at your carbs settings.