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-   -   Engine backfires on shutdown (https://www.onlycubcadets.net/forum/showthread.php?t=50919)

Walker1940 12-22-2017 01:17 PM

Engine backfires on shutdown
 
I have a Cub Cadet zrt 42inch deck mower. bought in 2010. Runs fine except when it is shut down the engine backfires one time. Engine is a Kohler SV470-SV620. Tried shutting down at different engine speeds, no change. Carbon Buildup in engine?

Sam Mac 12-22-2017 02:07 PM

Shut down solenoid my be bad. One thing that you may try is to pull the choke as you turn the key off.

Shrewcub 12-22-2017 04:15 PM

Once you park, try letting it idle for a whole minute before shutting it off. Letting my 1864 cool off helped it.

Ozcubowner 12-23-2017 07:55 PM

Slow engine down and shut off at half throttle is the correct procedure according to the Kohler book
Oz

Billy-O 02-04-2018 04:32 PM

I'm with Shrewcub on this! Bring down to idle and cool off a minute before shutdown.

Ozcubowner 02-15-2018 08:35 PM

Quote:

Originally Posted by Billy-O (Post 445656)
I'm with Shrewcub on this! Bring down to idle and cool off a minute before shutdown.

I am with the manual Billy O , me thinks they might have a rough idea how to turn off the engine
Oz

ol'George 02-15-2018 08:40 PM

Simple,
try both, go with what works :biggrin2:

J-Mech 02-15-2018 08:51 PM

Quote:

Originally Posted by ol'George (Post 446383)
Simple,
try both, go with what works :biggrin2:

What if neither work? :bigthink:

DieselDoctor 02-15-2018 09:02 PM

If niether works, you've got a great way to scare the neighbor when he least expects it! :biggrin2:

Cub Cadet 123 02-27-2018 09:02 PM

Shut off fuel supply and let the carb burn out any remaining fuel. My 2008 zero turn did the same, but I had a flame thrower on startup. I could feel the heat on my left arm and the flame was at least 4 feet out with the plastic fuel tan right above it.....Oh, what a ride! It had a hole in the carb bowl and the entire carb needed a rebuild. So, how does the carb hole get a hole in it, damned if I know, but I suspect sloppy work and a wild screwdriver from the shop when I took it in last. My questions to the owner were like a train with no wheels, ......soon get nowhere!

Sounds like you need a carb rebuild...

Cub Cadet 123


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