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346xp running a bit fast.?


carlos
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my 346 has started sounding like its running a bit quick and idling a bit fast too, using it today i checked the plug and it was more white than tan.

so is it a case of just tuning or looking for a fault? i will probably end up taking it to a repair shop but wouldnt mind having a look myself first.

want to to right by the saw as i love it so:biggrin:

thanks carl

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ye i switched to a different saw, what is the impulse line?

thanks carl

 

That is good advice from Andy as I have just repaired a seized 346xp with a split impulse.

 

If I had the saw, it would be pressure and vacuum checked. The impulse line on this saw is taken through the rubber manifold and joins the cylinder with a small dimple with a hole through it and this sometimes splits around the base, it is pretty hard to see and is easier to see if you slip the inlet manifold off its carrier.

 

Other issues could be the little impulse hose has slipped off under the inlet manifold. It could be a shot crank seal typically on the clutch side, worth checking the carb throttle rod isn't snagging somewhere and also make sure the saw has a metal inlet manifold clamp, the earlier ones were plastic and were upgraded due to the plastic ones unclipping.

 

These are the normal issues, hopefully your repair man is half decent as a bad one will just retune the carb leaving you with some issues.

 

Hopefully it will be simple but beware that an airleak will kill one of these high revving saws pretty quickly!

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That is good advice from Andy as I have just repaired a seized 346xp with a split impulse.

 

 

 

If I had the saw, it would be pressure and vacuum checked. The impulse line on this saw is taken through the rubber manifold and joins the cylinder with a small dimple with a hole through it and this sometimes splits around the base, it is pretty hard to see and is easier to see if you slip the inlet manifold off its carrier.

 

 

 

Other issues could be the little impulse hose has slipped off under the inlet manifold. It could be a shot crank seal typically on the clutch side, worth checking the carb throttle rod isn't snagging somewhere and also make sure the saw has a metal inlet manifold clamp, the earlier ones were plastic and were upgraded due to the plastic ones unclipping.

 

 

 

These are the normal issues, hopefully your repair man is half decent as a bad one will just retune the carb leaving you with some issues.

 

 

 

Hopefully it will be simple but beware that an airleak will kill one of these high revving saws pretty quickly!

 

 

You busy Steve? :biggrin:

 

To the OP: if you're local dealer is competent and has a good rep, they should be able to identify and fix the issue. Prices will vary. My local dealer however, is useless. I called to order a new chain for my 441 and they replied they'd have to order it in, as it was a "special item"...

 

Don't assume that just because there's a Stihl or Husky sight above the shop that they'll be competent. As a result all my saw work now goes Spud's way. The postage usually comes to around £20 return, but the job is done right the first time to the best standard. It's a whole lot more cost effective and efficient, believe me.

 

If you love the saw, get it done properly.

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thanks guys i will spend some time checking these things, got an alright repair guy but somtimes things get a bit lost in translation when you drop it off with the trainee etc.

spud, quick holiday full of rain and mountains and stout???and a sick saw :)

thanks again carl

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thanks guys i will spend some time checking these things, got an alright repair guy but somtimes things get a bit lost in translation when you drop it off with the trainee etc.

spud, quick holiday full of rain and mountains and stout???and a sick saw :)

thanks again carl

 

Sounds ideal! Enjoying the flatness of Norfolk at the moment but check out the courier if your local guy isn't up to it.

 

I am always busy but have a two week or under turn around on most kit!

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ye i switched to a different saw, what is the impulse line?

thanks carl

 

Ever wondered how fuel gets to the carburettor with out a fuel pump ?

 

When the piston goes down it creates pressure in the crankcase which should be airtight . This impulse is fed to the carburettor via an impulse line(small rubber hose) or a second small chamber inside the inlet manifold rubber boot . The impulse moves the diaphragm (inside the carburettor) up and down which pumps the fuel.:001_cool:

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