Engine runs rough at low throttle
#1
11-15-13, 04:34 PM
Engine runs rough at low throttle
My Husqvarna YTH24K48 with less than 100 hours run rough as cobb at low throttle. It seems to run much better a full throttle with or without load. Does anyone have any corrective maintenance recommendations? 
#2
11-15-13, 09:05 PM
Forum Topic Moderator
Sounds like some trash got in the carb. You might luck out by running some seafoam in the gas over the next couple of uses, but if not, you'll probably have to disassemble and clean out the carb.
#3
11-17-13, 03:13 PM
Hey Cheese, thanks.....I have used SEAFOAM in my old pickup truck...I used one can in 10 gal of gas in the tank....should I use a whole can in my 3+gal lawnmower tank?
#4
11-17-13, 09:26 PM
Forum Topic Moderator
It's not necessary to make it that strong, look at the directions. I don't think it will hurt at that strength though.
#6
11-19-13, 02:59 PM
I used spray SEAFOAM directly in the carb and also put SEAFOAM in the gas tank. The engine runs very nice at full throttle, but still somewhat lopes at half to low throttle. If it continues to run very good at full throttle that will work when cutting grass. It continues to be annoying when I'm towing my sprayer and would like less noise and speed (when pressing pedal all the way). Guess I can live with it and hope maybe the SEAFOAM will improve situation with a bit more use.
Would appreciate more ideas from folks out there.
Would appreciate more ideas from folks out there.
#7
11-19-13, 06:16 PM
I use Sea Foam all the time, as a first try especially. I would put four ounces to a quart of gas for a 4 stroke, with nothing else in the tank. Run it in the throttle range that's giving you trouble - for about five minutes, choke it to kill the engine, then let it sit for half an hour. Then repeat.
If the problem clears up, then finish filling the tank with straight gasoline and use the 1 ounce per gallon for the next couple tanks full.
If the problem clears up, then finish filling the tank with straight gasoline and use the 1 ounce per gallon for the next couple tanks full.
