Re: Re: Re: More timing question on a '47 H

Posted by Bob M on June 25, 2004 at 11:01:03 from (165.170.128.66):

In Reply to: Re: Re: More timing question on a '47 H posted by Dave in CT on June 25, 2004 at 10:14:40:

Not sure what those other timing marks are (my experience is limited to the “super” series H & M - they have marks only at TDC and 35 deg). My guess is the 4 deg ATDC mark is for magneto impulse setting. (When a mag impulse trip point is set after TDC the engine absolutely cannot kick backward while being hand cranked). The 180 deg mark is useful only when setting the valve lash on #2 and #3 cylinders.

My IHC parts manuals call out the distributor centrifugal advance weights/springs as “governor weight” and “governor spring”. Don't know why they did that - it seems confusing to me too…

Cannot answer your Blue Ribbon manual question. I’ve got the I&T manual + IHC parts catalogs for both my tractors. So far these have been adequate for my purposes – though the I&T is pretty vague on electrical system maintenance and ignition timing procedures.

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