My husband bought a 2011 Husqvarna YTH2348. I am the one that mows the grass. We had the mower serviced last week. We have a HUGE lawn and I mowed all but the orchard. The next day, I went out to finish mowing and it started ok, but when I turned up the throttle, it started blowing out black smoke and backfiring. I checked the air filter, it wasn't too bad, I ran it with the filter out, but it ran the same. I put in a new spark plug. That didn't help. It seems to run fine at half throttle, but when I increase it beyond that, then it spits and sputters. Also, if I try to turn the mower on, it makes it worse, there is just now power to run it. The oil is fine. I had just bought a new gas can of gas, so I didn't think it could be that. I assume that they replaced the fuel filter when the service was done. I am at a loss!!! Is there anything else I can try before I take it to the shop AGAIN!!!

SOURCE: Sputtering Mower

It might not be disengaging the mower deck all the way off. I had this problem on an older model.

Wade Mobley

• 513 Answers
• Posted on Jul 05, 2009

SOURCE: Craftsman Lawn Tractor/ hard start/ whitish smoke

does it turn over slow or fast if it turns slowly thats the problem so it could be battery or starter they have to have a good amount of rpms to burn fuel right when starting if not it floods out the engine with gas hope this helps thanks wade

SOURCE: Husqvarna YTH2348 drive belt slipping

Is there the proper amount of tension on the belt?Look in your owner's manual to find out how to adjust the tension.

SOURCE: engine runs but sputters after engaging blades

ck for water in carb bowl. also ck for filter in gas tank, or something in gas tank.

Ginko

• 19396 Answers
• Posted on Sep 26, 2010

SOURCE: Husqvarna riding mower w/20 hp

Hi.

There is gas smell in the carburetor because the engine is not starting and carburetor is flooding.

As first thing ensure that there is spark, pull the spark plug wire and put the end near to engine block while cranking. You will see the spark. If there is no spark, check distribution coil and wires.

If there is spark, check if there is fuel pressure, if there is smell from carb, then the fuel pressure should be Ok.
Once you are sure that the pump is doing its job, and that there is pressure, check the carburetor settings. The mixture is probably too rich or too lean, and for that reason it is not igniting.
If it is not a matter of carburetor settings, then the carb must be taken apart to check carburetor filter.

To get parts and diagrams see: Outdoor Distributors - Lawn Mower Parts