2010 polaris Ranger Pursuit 400 HO running rough

[PKR]

Neighbor dropped off his 2010 Ranger 400 HO. Said it was missing and backfiring. I replaced the plug as it was carboned up (kids use the side x side for chores and it is only idled around yard) Unit ran great, sent back home and it ran great for about 5 hours of run time and then it wouldn't start. He brought it back and I changed the plug again and it would start but would not run great. Pull plug and it was really wet. I suspect the carb needs cleaning and that is the direction I plan on going unless someone else knows anything about these units. ( I have never worked on one of these).

If you know of something else I should check let me know.

Also I am looking for a service manual for this unit.

Thanks

PKR

[Frank Angerano]

I would go right to the intake and check there first.   My guess would be something is in there or the air filter is breaking apart and small portions are getting sucked into the carb?  Air filters after a while break apart if they are not kept oiled.   Simple stuff first, after that get into the carburetor etc.  

Check for bad fuel, water in the fuel, poor fuel flow. Maybe a bad petcock or screen, all this stuff happens. 

[PKR]

Frank

Thanks for the reply. I had taken a gas sample from the tank yesterday and it looks good today, no sign of water.

The air filter and everything else looks good. My plan today was to pull the carb but I decided to try to start it first. It fired right up and purred like a pu*** cat. I ran it around the yard for about half an hour and it didn't miss a beat. I'm not to sure what is going on. I'm starting to wonder if the kids are flooding it when they try to start it and sitting out in the cold it isn't clearing itself???

The only difference between it being at the neighbours and being at my place is it is left outside there and is inside my shop here.

I'm going to move it outside tomorrow and let it sit for the day to see what happens.

[Frank Angerano]

Could be moisture getting into certain electrical components if its left outside  or just like you said, the kids flooded it.  Give everything a once over and make sure all plugs are good etc.  maybe run some high test fuel and monitor the machine for a bit.  

[PKR]

Thanks for the ideas, will check all the connections.

[Frank Angerano]

Your welcome.  Ride safe.