Stihl BG 55 Blower ringing

Differential · May 15, 2010

I've got a bg55 that has started making a ringing sound. I did a search, and it seems that it's typically the clutch bell housing.

Should this be normal on a blower? I've heard a Stihl trimmer the other day making this same noise.

Blower is only 1.5 months old, and has been well taken care of (fuel mix correct, no ethanol, etc.)

Alan0354 · May 15, 2010

You have clutch in the blower?

Differential · May 15, 2010

I don't know if there's a clutch on it...

Alan0354 · May 15, 2010

I never heard of blower having clutch. If your blower have air blowing out even at idle, I doubted you have a clutch. Meaning the ringing sound is not from the clutch.

topsites · May 15, 2010

Try answering the phone lol

On the trimmers it's normal, full metal clutch,
never have heard my hand held blowers doing it.

Differential · May 15, 2010

yeah, it's concerning me. i'll probably run it by the dealer and have them tell me it's normal (or not).

Lawnut101 · May 15, 2010

This may be a dumb question, but is your air intake jammed or anything? That's the only time mine has ever made a whistling sound.

Differential · May 15, 2010

not a dumb question at all. sometimes my clothes get sucked against the intake, but that's not the problem.

it's just doing it 100% of the time.

Jhill19 · May 15, 2010

mine used to do that, and it just quit over time, I don't think it's anything serious, my bg 55 is about 4 years old and its fine. might check the exhaust on it tho

Alan0354 · May 15, 2010

You sure it's not from the muffler. Those cat muffler make sound. My M242 makes random tapping sound when idle. I thought it was a problem and I brought it back, they start another one to show me it was normal. It just randomly go tap tap tap.......tap tap.............tap tap tap tap............tap...............!!!!:laugh::laugh:

Merkava_4 · May 15, 2010

Differential said:
I did a search, and it seems that it's typically the clutch bell housing.

Alan0354 said:
You have clutch in the blower?

Differential said:
I don't know if there's a clutch on it...

Alan0354 said:
I never heard of blower having clutch.

BAWAHAHAHAHAHAHAHAHAHAH!!!!!!!!!!!!!! :laugh:

thelawnkid · May 15, 2010

a bg 55 that has a slight whistle at full throttle means it it is running very good. They hardly ever do from the dealer when they are new but after i tune them they do. are you sure thats not what your hearing

rreyn1812 · May 15, 2010

Alan0354 said:
You sure it's not from the muffler. Those cat muffler make sound. My M242 makes random tapping sound when idle. I thought it was a problem and I brought it back, they start another one to show me it was normal. It just randomly go tap tap tap.......tap tap.............tap tap tap tap............tap...............!!!!:laugh::laugh:

I have the BG85 and I also had the ringing sound. The bolts on the muffler had loosened and just needed to be tightened.

Differential · May 15, 2010

Took it to the dealer and he said that everything was cool. He said that there's two metal pieces (in a crosshair configuration) where the tube meets the engine. He said that it's harmonic vibration from those metal pieces.

Guess I'll just run the crap out of it, and if it burns up, take it to him and say wtf.

Stihl BG 55 Blower ringing

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