Kohler CH15 Carb Question
 

I have a Cub 2155 with a CH15 engine. A friend has a same era CH16 with a blown engine. He put a new carb on it shortly before it bit the dust. Will his carb fit my CH15?

Thank you for any help

My spec# is 44508. Would the other engine spec# have to be the same, or do others interchange?

From what I have been able to find out. The carb from the CH16 should work on a CH15. The engine you have uses Kohler part # 12853169S, the CH16 uses Kohler part # 1285393S. Although the numbers are different in looking at the info they say this carb is also used on the CH15. Also the CH16 is evidently only used in Cub Cadets. looks like the main difference is the CH16 has the infamous SAM ignition. Looking at the pics of the 2 carbs the CH16 carb has a fuel shut off solenoid and I don't see one on your engine so you may need to come up with a power supply for it or remove it, cut the plunger off and reinstall it. Hope this helped.

Carb Swap Update
 

Hello All,
I got the carb off the ch16 (no solenoid) a put it on my ch15. It's hard to start and when it does the governor is hunting. I did the governor shaft adjustment and have been experimenting with the spring placement. I thought it was pretty good and tried to mow. Now it runs good for a few minuets then sputters and shuts off. I have the gas tank off and I'm cleaning everything out. Would a bad fuel pump act this way or do they either work or not?
Thank's again for every ones help.

Rick

Did you clean the carb?

Update
 

I did take the carb bowl off and cleaned with carb cleaner. Cleaned the tank out and blew air threw the line. After it started I sprayed carb cleaner in the carb at full throttle little at a time. Just got done mowing 1-1/2 hours and running good. Yahoo!! Will get the lawn sweeper out tomorrow after work and see how she runs.
Thank You All,

Rick