Yard Tractor 46-inch 22-hp Engine Yth21k46

Experienced gardeners share their insights in answering this question :
Put a little Lock-Tight on the threads of the bolts.

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

Husqvarna YTH21K46 (46″) 21HP Kohler Lawn Tractor (2012 Model)
Loss of power while working

If you feel loss of power while you are working with your Ride-On mower, this could be due to: Damaged belt tensioner which is tensioning the cutting deck belt. The belt connecting the cutting deck being damaged.

If it is difficult to start the ride-on mower, the most common reasons include: Old fuel; make sure to use fresh fuel, especially after winter storage. Spark plugs might be dirty or damaged. How to examine and replace a spark plug on your ride-on mower.
Single Cylinder Engines

Husqvarna use our highly durable FJ180V engines. Discover the benefits of their exceptional build-quality for you and your business.

With proper maintenance, you can expect your Husqvarna riding mower to last up to 10 years or more. How long it will last depends on the model and how well you take care of it. Generally speaking, a Husqvarna riding lawn mower should last for at least 5-7 years with basic maintenance.
One of the common problems with Husqvarna riding mowers is their sudden power loss. If you ask our lawn care team, the problem stems from different reasons like bad gas in the fuel tank, plugged air filter, broken cooling pins, dirty carburetors, and clogged fuel lines.
Dirty/Clogged Air Filter

If the air filter becomes too clogged with dirt or dust, there may not be sufficient air reaching the cylinder. This can cause the fuel to not burn, and the engine will not start as a result. If upon visual inspection the filter appears dirty or dusty, follow our Air Filter Replacement Guide.

If your tractor cranks, but won`t start, you`ll want to look at a few different engine components. Is the fuel making it to the cylinder? Check the fuel level, the shutoff valve, and the fuel filter. If those components look ok, air might not be making it to the cylinder.
Disconnected, dirty or fouled spark plugs are common causes for engines that won`t start. Spark plugs typically need to be replaced every season or 25 hours of use. You should also check that the spark plug gap is set properly.
Husqvarna 7021P 160-cc 21-in Push Gas Lawn Mower with Honda Engine.
Husqvarna Self-Propelled Push Mower with 5.5 HP Honda OHC Engine, 21in. Cutting Width.
Model: 13WN77KS011 Pony (2011)

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Mower start up and runs, but starts to cut back, and smokes just a little bit. The mower stops smoking when it throttle up. It will continue to run but not at full throttle. I can hold a finger gently over the fuel primer bulb and it will throttle up for a small time.
ANSWER : It sounds like she’s being deprived of the correct fuel / air mixture due to a dirty carburetor (the biggest problem with mowers when gas is left to sit for a period of time). If you do not know how to take the carburetor apart and clean it thoroughly, then I suggest taking it to the local shop (hardware store or mower shop) and having it tuned up. It’ll probably be just fine and worth the money. Hope this helps and good luck.James

Sputtered, died. Will not start anymore – Husqvarna Lawn Tractor – 54in. Deck, 26 HP, Model# LGT2654
ANSWER : Sounds like the carburetor needs cleaned and maybe rebuilt. If you can spray a little starting fluid (or a little carb. cleaner or anything volitile) into it and it starts and dies, you know it is in the carburetor.I hope this helps.

Mower jerks when going up an incline. – Husqvarna Riding Lawn Mower 46 Cut Kohler Yth21k46
ANSWER : Belt spilling

Change drivebelt – Husqvarna 8 12hp Riding Mower 970 Blade Hub 506935901
ANSWER : Remove deck and drive the mower up on some kind of ramp and crawl under and look it over then go to doing it .

How do I bypass the brake switch
ANSWER : Follow the shaft/arm that the brake pedal is attached to, the switch will be activated by that pedal arm.

M0wer wont start good fire ther is fuel to carb
ANSWER : Clean out the jets in the carb

When I hold the bar down that engages the blade it will not cut?
ANSWER : Is the blade sharp?

Lawn mower cranck but wont start…
ANSWER : Since you already checked for spark and air I would drain all the fuel out of it and check that fuel for water. Over time some lawn mowers end up with contaminated fuel. You can see the water sitting on the bottom of the fuel if you let it stand for a bit in a small plastic bowl.

Be sure to empty and dry out you fuel can as well. Especially if the mower stopped running right after a refuel. Which is a good sign your gas can is contaminated too.