Its not a powertorque at all. You should only need to go aas far as removing the flywheel and cam under it, put a dribble of fuel around the seal and see if it promptly leaks past.

Entire Thread
Subject	Posted By	Posted
Over revving and governor?	tiger	23/09/13 02:09 PM
Re: Over revving and governor?	vccomm	23/09/13 07:54 PM
Re: Over revving and governor?	tiger	23/09/13 08:20 PM
Re: Over revving and governor?	vccomm	23/09/13 08:32 PM
Re: Over revving and governor?	tiger	23/09/13 09:30 PM
Re: Over revving and governor?	tiger	25/09/13 07:19 PM
Re: Over revving and governor?	vccomm	25/09/13 09:32 PM
Re: Over revving and governor?	tiger	25/09/13 10:50 PM
Re: Over revving and governor?	Anonymous	26/09/13 05:38 AM
Re: Over revving and governor?	tiger	26/09/13 08:48 AM
Re: Over revving and governor?	tiger	26/09/13 02:32 PM
Re: Over revving and governor?	David2stroke	26/09/13 08:38 PM
Re: Over revving and governor?	tiger	26/09/13 09:32 PM
Re: Over revving and governor?	Deejay	27/09/13 07:00 AM
Re: Over revving and governor?	tiger	27/09/13 08:25 AM
Re: Over revving and governor?	Deejay	27/09/13 10:21 AM
Re: Over revving and governor?	ron ludwig	20/10/13 04:41 PM
Re: Over revving and governor?	Anonymous	27/09/13 11:16 AM
Re: Over revving and governor?	tiger	27/09/13 11:24 AM
Re: Over revving and governor?	Deejay	28/09/13 11:19 AM
Re: Over revving and governor?	Anonymous	27/09/13 11:35 AM
Re: Over revving and governor?	tiger	28/09/13 10:25 AM
Re: Over revving and governor?	tiger	28/09/13 06:57 PM
Re: Over revving and governor?	tomo4192	29/09/13 05:49 PM
Re: Over revving and governor?	tiger	29/09/13 07:32 PM
Re: Over revving and governor?	tomo4192	29/09/13 08:44 PM
Re: Over revving and governor?	tomo4192	02/10/13 10:16 PM
Re: Over revving and governor?	tiger	02/10/13 10:43 PM
Re: Over revving and governor?	tomo4192	03/10/13 01:44 PM