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It's the same Onan CCKA 16.5hp as used on the 816. I think Gravely just upped the model number to 817 for the last year, before switching over to the 8000 series. They added the seat riser but dropped the rear liftable hitch and rear PTO. jason
 

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It's the same Onan CCKA 16.5hp as used on the 816. I think Gravely just upped the model number to 817 for the last year, before switching over to the 8000 series. They added the seat riser but dropped the rear liftable hitch and rear PTO. jason
:ditto:

One of my friends has one in decent running shape. I think you would definitely have rack and pinion steering and splined clutches with the 817 since it was at the end of the 800-series production, so those are pluses vs. early 816 tractors with keyed clutches and enclosed steering, but you don't get the liftable hitch and PTO axle block standard like you do on the 816.
 

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It could also be a B43, and I would find that to be more likely. Most 816Ts have B43s.
I've only seen 3 or 4 817s in person and they've all had CCKA engines. That's the reason it's an 817 - it has the 16.5 hp CCKA. Otherwise, the 16hp B43 gives you a model number of 816T. The '89 customer service update also lists the 817 as only having a CCKA, for what it's worth. I think it's correct in this case, though.
 

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Agreed. The whole 816/816S/816T/817/818T is annoying. I don't really know Gravely's reasoning for doing it. Engine availability? I supposed Gravely wanted to get the B-series Onans out there ASAP, even before the 8000-series changeover was ready.
 

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Hmm. So Gravely was making the 817 and 816T at the same time using 2 different engines? That seems totally redundant, but it doesn't surprise me.
Correct and I believe I have a 1978 brochure with the 816S, 816T, and 818 all sold concurrently. In 1978 the 8000s came out too. A lot going on that year.
 

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Correct and I believe I have a 1978 brochure with the 816S, 816T, and 818 all sold concurrently. In 1978 the 8000s came out too. A lot going on that year.
You don't happen to have a scan of that, do you? I'd be interested to see how Gravely's marketing department dealt with that.
 

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You don't happen to have a scan of that, do you? I'd be interested to see how Gravely's marketing department dealt with that.
I don't have a scan yet but I have been going through them slowly. I am about halfway to my goal of collecting all the full-line brochures between 1968 and 1987.

816 and 816S were in the lineup together in the 2/76 brochure.

816S, 816T, and 818T were in the lineup together in the 3/78 brochure.

9/78 rider brochure had changed to the 8166, 8167, 8177 (I'm only talking twins here). In that brochure all the tractors have the later seat pan.

Just to mix things up, the 8/78 full-line brochure had the 8162-T, 8163-T, and 8183-T. Boy, is that confusing.
 
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