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  Graham Taylor May 6, 2019 at 10:54pm

  There's some screws under the flywheel that hold the crankcases together............ these can sometimes work loose and lock the engine though I would have thought it would stay locked and not free off. Might be worth removing the flywheel to check on those screws though.
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    Jason Bibiloni > Graham Taylor May 7, 2019 at 1:37pm

    Ok cheers I will have a look
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      Jason Bibiloni > Jason Bibiloni May 10, 2019 at 8:15am

      So took off the flywheel but all the screws were in place ... ...anyone with any other ideas?
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  Adam Pilgrim May 10, 2019 at 9:01am

  Soundsl ike a possible broken piston ring or collapsed main bearing to me. If its the rings, it will need a piston and barrel and new rings at best.

  Another option is that it is partially seized and is occasionally 'picking up'.

  Remove exhaust and check piston and barrel for scoring (if your mechanical abilities cover this).
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  David Benson May 10, 2019 at 11:21pm

  check the magneto has the propper clearance on the magnets of the flywheel 
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    Jason Bibiloni > David Benson May 12, 2019 at 8:42am

    Any idea what the clearance should be?

    Had a look online but couldn't see anything
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      David Benson > Jason Bibiloni May 12, 2019 at 10:59pm

      do not know the propper clearance but its very small when you took off the pull start did you take the plug out and rotate the fly wheel by hand to see if you could detect what was jamming the rotation 
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        Jason Bibiloni > David Benson May 12, 2019 at 11:29pm

        Yeah had a look ...everything seems to run freely......

        I think I am going to put it on the back burner till winter.....

        All I can say is I am baffled
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  Jason Bibiloni May 12, 2019 at 9:18am

  I Think I might give up with this blower as I can't find anything wrong with it unless the teeth on the flywheel have worn but it doesn't look like it has excessive wear.

  I have another blower I can use ,it's the same model but it is the quieter version bg66c.

  It's seems to lack some power ....does anyone know how they make them quieter ?

  I just thinking that I could swap the parts from one blower to another and make one decent one