Question about Husqvarna 160 CC Honda OHC Engine 21 in

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My husqvarna lawn mower 7021 ch1 with brigg n straten 7.0 motor It is 2 summers old it was running great I went to mow the next time and it will start but runs for about 3 seconds,We drained fuel put new plug in cleaned air filter,drained all fuel and leand cou carborator (we found little condinsation in it) Does and one please have any ideas on whats the problom is

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Honda 160cc mower engine starts and dies.

Your carbeurator is crudded up. Get a can of aerosol carbeurator cleaner at any auto parts store. Remove the air filter and spray two squirts of cleaner into the air intake. Start the engine and keep it running by squirting more carb. cleaner into the air intake. WIth a little patience you will clean your carb. and solve your problem.

Posted on Sep 14, 2009

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SOURCE: wheres the oil drain plug for model 7021 CH1

Most horizontal 4 stroke engines have them on the bottom next to the crank/output shaft that the blade rides on. Tip the mower on it's side and look under it. You should be able to see the bottom of the engine. If it's full of grass/dirt, brush it off. You should see the drain plug.

Posted on Apr 30, 2010

SOURCE: husqvarna 7021 kohler 173cc looks like its leaking

The carburetor probably needs cleaning -- the float is sticking.

Charlie

Posted on Jan 07, 2011

  • 1 Answer

SOURCE: lawn mower husqvarna problem

I have an XT721F self-propelled, auto choke Husqvarna mower. The first time I used it this season it ran for a short time and then just quit on me. I have since emptied out all of the gas and have replaced it with high octane 91, and have also added Seafoam to clean out any other issues. I mowed two weeks ago with no problems and went to mow again today and only made it through 2/3 of my back yard and the mower stalled out on me again. What's going on?

Posted on Jun 28, 2011

Knucklebstr
  • 222 Answers

SOURCE: PROBLEM STARTING OF HUSQVARNA 7021

An engine needs three things in order to start and run; 1. Spark 2. Compression 3. Fuel. Sounds like you've got good spark if the engine starts, so it seems you may have a fuel problem. This could be several things, from a kinked fuel line or a bad gas cap, to a plugged or gummed carburetor. The carb is usually the issue if your machine has sat for any time with Ethanol Gas in it. The carb should be taken apart and thoroughly cleaned with a good carb cleaner (better left to a professional if you're not familiar). Your machine appears to have a Honda engine on it and I have had problems with stuck valves on them. The valve cover is right up front and if you prop the front of the machine up, can be removed without losing your oil. Make sure the valves are working properly and not sticking. One more possibility is that you may have struck something hard with the blade and knocked the timing out of whack (broken timing key underneath the flywheel. That's the best I can do without actually looking at your machine. Best of luck to you.
James

Posted on Nov 08, 2011

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I have an XT721F self-propelled, auto choke Husqvarna mower. The first time I used it this season it ran for a short time and then just quit on me. I have since emptied out all of the gas and have replaced it with high octane 91, and have also added Seafoam to clean out any other issues. I mowed two weeks ago with no problems and went to mow again today and only made it through 2/3 of my back yard and the mower stalled out on me again. What's going on?

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Wheres the oil drain plug for model 7021 CH1


Most horizontal 4 stroke engines have them on the bottom next to the crank/output shaft that the blade rides on. Tip the mower on it's side and look under it. You should be able to see the bottom of the engine. If it's full of grass/dirt, brush it off. You should see the drain plug.

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