Ms150 tc muffler mod

[Pbtaylor2014]

Hi giys off tomorrow to get the ms150 tachometer what should the rpm be thanks

[spudulike]

MS150s are a bit strange, they have limited coils which means the saw will hit the limiter and then the tach will bounce all over the place. I usually open the H screw up to get the revs down and increase them to hit the limiter and do the last bit by ear. The MS150s and MS201s are a bit strange like that and unlike other unlimited carbs.

[Pbtaylor2014]

 

Hi guys how the spark plug looking a bit dark any recommendations on what to do thanks

 

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[spudulike]

Run it some more and go from there. It looks normal to a little rich, it will do no harm but you may get a little more if you lean it out slightly and check again.

[Rich Rule]

On my 150 I took of the deflector, 1 screw, then opened up the recess underneath then shaped the deflector out slightly to help improve gas flow, I also advanced the ignition. I've noticed though, working on another 150 that the exhaust has no removable deflector.

 

My 150 is transformed, incredible difference.

 

Can you put up a picture of that Carl? Cheers

[High Scale]

Here you go Rich, USA made.

[Pbtaylor2014]

Hi carl that's what i have done i filed out the recessed metal but haven't touched the deflection hete in the use most saws haven't got any spark screen so never had to deal with this also haven't done anything with the ignition

[Pbtaylor2014]

Join Date: Nov 2014

Posts: 174

Re: Ms150 tc muffler mod

Hi carl that's what i have done i filed out the recessed metal but haven't touched the deflection plate in the UK most saws haven't got any spark screen so never had to deal with this also haven't done anything with the ignition

[Pbtaylor2014]

 

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[Pbtaylor2014]

Hi guy been useing for a while now after the muffler mod it's started to run a little off the plug is quite black any idea what to do thanks in advance

Photos are up above thanks

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