Kohler K91S

[formariz 11,849]

Does anyone know or seen where or what application a Kohler K91S (starter/generater set up) was used for? With the exception of mine and the Fireman's I have never seen or heard of them used  in any application. I just got two more from the same source as the first one (also the source for Fireman's) and they came  from a long out of business RV manafacturer. Perhaps used for The RV's generater?

 

Edited July 7, 2013 by formariz

[953 nut 51,541]

I have one that came on a generator, picked it up used at a flea merket and the seller had no idea what it had been used for but it was painted OD Green so we figured it ma have been Army.

 

 

[formariz 11,849]

I have one that came on a generator, picked it up used at a flea merket and the seller had no idea what it had been used for but it was painted OD Green so we figured it ma have been Army.

 

 

are you using it on any tractor?

[whfan74 2,015]

Bought one myself that was used on a Amish washing machine. No lie!

[buckrancher 2,673]

is that the one that was on e-bay a week ago

[formariz 11,849]

is that the one that was on e-bay a week ago

No that is the one on my tractor now. Photo from 4 years ago. The one that was on ebay is on the way here now with another twin.The triplets will finally be together again.

[AMC RULES 36,945]

So, did you keep the starter/gen set up on the tractor? 

 

[formariz 11,849]

Here it is on tractor

[AMC RULES 36,945]

I'd say you did.   

Looks pretty busy down in the nut roasting dept.  

Thanks for the picts. 

[MarkPalmer 80]

Do you have a spec number on these engines?  If so, if its in one of my books I can possibly figure out who they were made for and what the purpose was.  Most generator engines have tapered PTO shafts, but it could still be a possibility.  The S variant of the K91 isn't something that you come across every day, the starter/gen and other items probably cost as much to provide as the engine itself cost back then.  That bluish-green color was a common Kohler replacement engine color in the 1960's. 

 

-Mark-

[formariz 11,849]

Spec no. 31G73A.

 

Serial No. G176353.

[MarkPalmer 80]

I’m thinking the G in your spec should be a number 8, if so K91 spec 31873A references to Kifco Ag Rain, who made (and still make) irrigation sprinklers.  Just a big old guess, but the engines might have been spares for large sprinklers used by the RV manufacturer to test RV’s for water leaks. 

 

-Mark-

[formariz 11,849]

looking at it closer it is actually a 6.

 

31673A  positively the spec #

[MarkPalmer 80]

The 31673A is just a basic spec K91 with starter generator, it wasn't made specifically for any manufacturer or a specific purpose.  An "off the shelf" complete replacement engine so to say.  Sorry it wasn't used in something exciting until your tractor 

 

-Mark-

Edited July 8, 2013 by MarkPalmer

[formariz 11,849]

Thanks Mark

 

Makes sense. I cannot think of too many  practical uses for a motor with only 4HP with a setup like that. In addition to the additional cost  it it needed to have a battery to run. Seems that their final destiny will have to be some motorless RJs. I see no other option.

[Kbs 1]

I have a k91s came in my Wayne power sweeper. spec 31734a

[formariz 11,849]

4 hours ago, Kbs said:

I have a k91s came in my Wayne power sweeper. spec 31734a

Can we see a photo of it?

[953 nut 51,541]

4 hours ago, Kbs said:

I have a k91s came in my Wayne power sweeper. spec 31734a

We would like to hear more about it and your  interest.

https://www.wheelhorseforum.com/forum/47-introductions/

[WHX?? 46,707]

Kbs

Older thread but we all have abit of interest in early 90/91s with SG. 

Edited September 24, 2019 by WHX24
Manners