Question about Ariens 21 In Classic Walk Behind Push Lawn Mower ()

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(Ariens A173K22) the gas is leaking of air filter compatment and I can not get the mower to start. How do I ckeck to make sure that the spark plug is sparking before going to the next step. Also How do I get access to fuel filter and carburator.

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Gas leaking out means carb problem. Do not use the unit until you solve the issue, as you are a fire hazard. Typically, you need to rebuild the carb.

Posted on May 21, 2011


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Posted on Jan 02, 2017


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22' snapper walk behind mowewont start .cleaned spark plug and still wont start .swapped spark plugs from another mower that does work and the other mower starts with the snapper mower's spark plug .

You need several things for a running internal combustion engine:
  • Air
  • Spark (to start)
  • Fuel
  • Compression
  • Lubrication
  • Exhaust.
You've shown that you have a workable spark plug so far. Going from the above, consider as well
  • Fuel. Bad / old / contaminated fuel. Clogged fuel filter. If it's a motor that needs gas/oil mix, does your gas have the right oil mix?
  • Air: Dirty, clogged air filter or air inlet.
  • Spark. Is any electricity making it to that proven-workable spark plug?
  • Compression. For this one, the most likely problem (other than a toss-the-engine thing like a broken piston) would be if the spark plug is not tightened into the mount hole, allowing the air to leak out rather than compress.
  • Exhaust. Most lawn mowers will have a spark arrestor on the exhaust to make sure you don't set a dry yard on fire with your exhaust. It's often overlooked in diagnosing two-stroke engines. Make sure it's not clogged or blocked.
  • Lubrication. Is there oil of the right type, and up to a proper level on the dipstick. No oil equals way too much friction in the engine.
Good Luck!


Apr 25, 2016 | Snapper Garden

1 Answer

2 months old, won't start...Brigg and Stratton engine started the last time but blew out a bit of black smoke

black smoke usually states to much gas, check spark plug/air filter. if they are clear check gas cap

Sep 22, 2014 | Ariens 21 In Classic Walk Behind Push Lawn...

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After sitting for a week my new Ariens 22hp B&S won't start , no gas, tank full spark is good

Does it poot and ****? That's water in the gas.
You got spark - so no gas is correct, otherwise it would go - Maybe you have water in the tank and the carb. Gas tanks and gas cans **** it in nightly. Moisture condenses and falls to the bottom of the tank. Try a little
starting fluid spray in the air filter area,

Sep 10, 2013 | Ariens Garden

1 Answer

Model A173K22 Primer Where?

What? !O_O!

Oh,.....................I was going to say, I don't remember any laptops coming with a priming feature, lol!

In answer to your question there is no priming feature, for an Ariens walk behind gas lawnmower, model A173K22,

Page 9,


Aug 28, 2012 | Computers & Internet

1 Answer

Trouble starting murray riding mower model # 42560x92a

it has to be ignition coil or gas feed ckeck coil by removeing spark plug leave coil wire connected turn mower over see if you have spark if so it is in fuel delivery if not check and be sure ground is releasing on the flywheel brake if it is then check fuel filter if ok rebuild and clean carburator.

Jul 31, 2012 | Murray Garden

1 Answer

I need to know what type of oil to add to my ariens a173k22 lawn mower

Hi, if it has a Briggs and Stratton engine you need sae 30 engine oil. Regards Phil.

Apr 30, 2011 | Ariens 21 In Classic Walk Behind Push Lawn...

1 Answer

Problem: How to start the mower (Ariens A173K22). The mower sat all winter. I have gassed it up and checked the oil. Pulled the cord. Nothing happens. I bought the mower new in the fall and used it...

For initial start up, I suggest removing the air filter off of the intake to the carburetor. Then get an aerosol spray can of carburetor/choke cleaner at auto parts store or Walmart. Your next step is to open the choke and the throttle of the mower and spray a couple shots into the carburetor throat. Then, choke the carburetor and immediately pull the starter cord.If it fails to attempt to run, repeat the process. I would get your manual, but I need the serial number off of the mower. You provided the model number, try to find the serial number and input that info here to download a manual. I think you can order a printed one from here as well.

Apr 13, 2011 | Ariens 21 In Classic Walk Behind Push Lawn...

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Mower only runs two min and quits

Sounds like a blocked or dirty fuel inlet.

Remove the carb bowl and work the float up and down until gas flow improves. Be gentle! Just a little light pressure from beneath and the float should swing up about a quarter inch.

The short run is due to the carb bowl not refilling fast enough to keep up with full throttle demand.

Make sure when you put the carb bowl back on there arent any fuel leaks before trying to run the mower.

Good luck and be careful!

Jul 25, 2010 | Ariens 21 In Classic Walk Behind Push Lawn...

1 Answer

Mower was working fine then engine coughed and died. Plenty of fuel but can't get it started again. Any suggestions?

Ckeck the spark plug cable and make sure it is tight on the plug. You did not say what kind of mower but some have low oil shutdowns. Make sure the oil is up to the full mark. If neither of these items solve the problem check the spark. If there is good spark remove the air cleaner and squirt some gas into the carbburator and try to start. If it runs then dies you know it is a fuel problem.

Dec 03, 2009 | Garden

1 Answer

I have a 22" bolens push mower with a 5.0 hp Briggs and Stratton engine. Despite a clean air filter, clean oil and good spark plug, the mower would only operate at low idle today (2 years old). I...

Speed Control out of adjustment if one on mower. You probably bound up the linkage when you removed the engine cover. If linkage is not damaged make sure it has free and clear movement. Your mower carb probably flooded the engine, pull spark plug and turm engine over a few times, ckeck spark plug to see it is not wet from gas. Hope this helps !

Sep 11, 2009 | Garden

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