cub cadet model #13AVA1CS009 runs fine for about 10 min, then starts running rough and cuts off. New carb installed. 18HP twin cam . sputtering and

When you start it back up, does it run fine for another 20 minutes? Could a coil be going bad and it goes down to one cylinder after it heats up after 20 minutes?
 
Post up the model, type and code info of the engine.
Using that model number from the tractor leaves room for lots of speculation and Cub used several different engines on the same model tractor at times so with engine info we can then maybe get on the same page as you.

thanks
 
Start with easy mechanical thingslike valve lash
Excessivly loose exhaust will do this.
If they are OK check the coils by removing the kill wires for a single mow ( don't forget to replace them )
Then there is a vacuum lock because the tank vent is not working so loosen the fuel cap so air can get in
Work your way through that lot & get back to us with the results .
 
Forest#2 said:
Post up the model, type and code info of the engine.
Using that model number from the tractor leaves room for lots of speculation and Cub used several different engines on the same model tractor at times so with engine info we can then maybe get on the same page as you.

thanks
Click to expand...
Model # 13VAV1CS009 11102373 Serl# 1C237H40229 XT1 LT 42KH Check carb ,gal line and filter all check out fine. Tried to cut grass today. need fine for about 25 min. then started bucking and trying to cut off. It is worse when blades are turning

Thanks for concern I gave the wrong #
should read Ser@4706730603 Spec # PS-SV5413218
Thanks again
 
Last edited:
bertsmobile1 said:
Start with easy mechanical thingslike valve lash
Excessivly loose exhaust will do this.
If they are OK check the coils by removing the kill wires for a single mow ( don't forget to replace them )
Then there is a vacuum lock because the tank vent is not working so loosen the fuel cap so air can get in
Work your way through that lot & get back to us with the results .
Click to expand...
Will check
Thanks
 
three things make an engine run. Fuel and air mixture, compression, and properly timed ignition (spark). Heat can affect all three. As suggested the tank may not be venting. The coil may be going bad. Valves may be too tight and as they heat up they expand and hold open a bit. The low hanging fruit is make sure the tank is venting. Next I think someone here suggested a device that goes between the spark plug and wire to verify it is firing properly. If it has a fuel filter make sure it is clean or new.
 
154 hours on the machine.

Is it still under warranty?

Is this link the machine?
could not find a 13VAV1CS009 ENGINE

Cub Cadet XT1-LT 42 (13AVA1CS009) - Cub Cadet 42" XT1 Enduro Lawn Tractor (2015) Engine Accessories (Kohler Single) Parts Lookup and Diagrams | PartsTree

Find genuine OEM replacement parts and diagrams for the Engine Accessories (Kohler Single) for the Cub Cadet XT1-LT 42 (13AVA1CS009) - Cub Cadet 42" XT1 Enduro Lawn Tractor (2015)
www.partstree.com www.partstree.com

Is it a Kohler single cylinder?
 
bertsmobile1 said:
Start with easy mechanical thingslike valve lash
Excessivly loose exhaust will do this.
If they are OK check the coils by removing the kill wires for a single mow ( don't forget to replace them )
Then there is a vacuum lock because the tank vent is not working so loosen the fuel cap so air can get in
Work your way through that lot & get back to us with the results .
Click to expand...
T
Forest#2 said:
154 hours on the machine.

Is it still under warranty?

Is this link the machine?
could not find a 13VAV1CS009 ENGINE

Cub Cadet XT1-LT 42 (13AVA1CS009) - Cub Cadet 42" XT1 Enduro Lawn Tractor (2015) Engine Accessories (Kohler Single) Parts Lookup and Diagrams | PartsTree

Find genuine OEM replacement parts and diagrams for the Engine Accessories (Kohler Single) for the Cub Cadet XT1-LT 42 (13AVA1CS009) - Cub Cadet 42" XT1 Enduro Lawn Tractor (2015)
www.partstree.com www.partstree.com

Is it a Kohler single cylinder?
Click to expand...
Single cyl. twin cam 18hp Model # 13AVA1CS009-11100273 Out of warrnty
 
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