314 idle speed

[deebig 85]

I just installed a tach and was wondering what is a proper idle speed for a AC314 with 14hp kohler.    

[PhanDad 3,246]

Per the Kohler K series service manual, idle speed is 1200rpm, max 1500.  

 

Edited July 27, 2018 by PhanDad
revised range 1200 not 120

[deebig 85]

1 hour ago, PhanDad said:

Per the Kohler K series service manual, idle speed is 120rpm, max 1500.  

 

Thanks Bill but kohler manual also says idle speed may depend on equipment. Mine is at 1050 now. I like the way it sounds at that speed, 1200 sounds like a lawn mower!

[tadams 904]

Main thing is to keep enough air moving around the engine to keep it from over heating.

[Bill725 907]

Idle speed of 120 RPM? Did you happen to mean 1200 RPM?

[deebig 85]

My concern is the compression release happens below a set speed and centrifugal force turns it off as speed increases. Cooling is also a concern. 

[PhanDad 3,246]

15 hours ago, Bill725 said:

Idle speed of 120 RPM? Did you happen to mean 1200 RPM?

Yup

[kwt 298]

On 7/26/2018 at 1:50 PM, tadams said:

Main thing is to keep enough air moving around the engine to keep it from over heating.

I've always figured that it had more to do with the oil dipper flinging enough oil at low speed.

[deebig 85]

1 hour ago, kwt said:

I've always figured that it had more to do with the oil dipper flinging enough oil at low speed.

Had thought of that. I set it at 1200 b/c that is recommended. 900rpm does sound cool though!

[kwt 298]

I'm guilty of having a too low idle on a couple machines for that exact reason.

 

I once seized a main bearing on a 6cyl industrial engine turning about 200 rpm. Lesson learned.