View Full Version : exmark lazer is backfiring

04-24-2007, 05:54 PM
i have a exmark lazer with a kholer 2 cylinder engine, its been backfiring and loosing power. its not really backfiring as much as sputtering i guess or it does kinda make a pop sound as its running. any ideas what it could be? i repalced plugs, air filter and sprayed this Amsoil spray into the intake to clean the carb/engine. it kinda fied the problem for a week but now its back.

04-24-2007, 09:41 PM
Try changing out the plugs.

04-24-2007, 10:54 PM
Could be water/trash in the carb....

04-24-2007, 11:31 PM
I guess I can't read. I see now you changed out the plugs. Restrorobs onto it.

04-25-2007, 07:50 AM
its almost as if it were running with the choke on, is the carb. adjustable? maybe its running too rich?

04-25-2007, 08:02 AM
Take the carb. off, Tear it down and clean all ports and passages with carb. & choke spray cleaner with the little straw. Check the float needle valve for a wear ring around the tip and replace it if so.

Some of these carbs. had a low speed adjustment on the top but no adjustment on the high speed where it sounds like your problem is.

04-25-2007, 08:08 AM
is there a DIY around here for the steps to removing a carb and dismantling?

04-25-2007, 08:14 AM
Yeah, It's me but gotta get to work right now !

04-25-2007, 07:04 PM
Click on the link below then enter your engine model, You can down-load a PDF service manual with detailed instructions.....