Lawn Mower With Toro Power Tools
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Has it sat out in the rain?You may have rust on the magneto. Or there may be gunk in the carburetorSquirt just a little gas into the carburetor and crank it. If it fires up but dies, you have carburetor problems. If that is the case you will need tho remove it and clean it ( boil it in soapy water ).If no spark, you will need to remove cover and take off the magneto and sand off the rust. Then put a little oil on it to protect it. When re-installing it bring it to almost touching and tighten it.
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If the plug is clean or you`ve replaced it and the mower still won`t start, the issue could be a lack of fuel. Either the carburetor is dirty and not able to mist the fuel to be mixed with incoming air, or no gas is getting to it to begin with.
A dirty filter chokes off air to the engine making it hard to start so check to see if yours needs to be replaced. If you need a new filter be sure to use the original manufacturers part or the correct Toro replacement. These can often be purchased at your local Toro dealer or a home improvement store.
An airlock is one of the common causes why your mower won`t start after running out of fuel. An Airlock occurs when air replaces fuel in the fuel lines. As you refill your fuel tank, you could push the air towards your mower`s carburetor, which keeps the new fuel from reaching the engine.
When one of these engines is hard to start, one of the possible causes is a dirty air filter. You can confirm this by removing the filter and trying to start the mower. If the engine turns over, the conclusion is simple: you need to clean or replace the air filter.
Bad Spark Plugs
If the engine holds compression well, and the fuel system is working correctly, but it still won`t start, that tells us that your car`s spark plugs may not be working. The spark plugs ignite the air/fuel mixture inside the engine`s cylinders. It`s the resulting explosion that actually powers your car.
Your lawn mower turning over but not starting due to several reasons, such as a faulty or disconnected plug, a disconnected spark plug wire, a clogged air filter, or a contaminated fuel tank. A faulty carburetor, a dirty cutting deck, or a dysfunctional flywheel brake can also cause this.
Check the Fuel Filter
To start, tap the side of the carburetor to help the flow of gas. If that doesn`t work, you might have a clogged filter. Not all lawn mowers have a fuel filter, but for the ones that do, it`s usually located in the fuel line or the fuel tank.
If no spark appears, check for broken wires, shorts, grounds or a defective stop switch. Once you have confirmed that the stop switch is working, reconnect the spark plug lead.
If you haven`t turned on your engine recently, your mower won`t start and/or you have to tug repeatedly on the rewind to start the engine, a damaged spark plug may be the culprit. These problems may also cause excessive fuel consumption, deposits on the cylinder head and oil dilution.
Discover Relevant Questions and Answers for Your Specific Issue
the most relevant questions and answers related to your specific issue
Spark plug gap – Toro Lawnmower 20099 Mower Mowers Lawn
Petrol is spewing up from air filter on briggs and stratton 90208 ride on mower
Lol too much oil bud take a little out
I need the spark plug gap for an Ariens ST624E. the spark plug = 21533500
The recommended setting is .030″
<!– from fixya rte –>Spark plug gap setting poulan pro 033. – Poulan Pro Prod/Poulan Weedeater Poulan Pro PP5020AV 20" Gas Chain Saw
I have a pb-251. replaced carb, air filter, hoses, spark plug and cleaned spark arrestor. start easily. runs fine for 2 minutes and then stalls if I give it the gas but will idle all day long.
Loosen gas cap. Probably a bad Vent in the gas cap
Wont start new carberator, new fuel lines w/filter, new spark plug and air filter.
It ran like a champ. I put it away and a week later it wont start. Acts just like it did before I changed everything
If the same fuel is in it try draining and re filling with fresh fuel, if no better to rule out an ignition issue, spray some fuel oil mix straight down the carb throat, if it fires up it is still a fuel issue.
What should the spark plug gap be on a weedeater trimmer 25cc
I need the spark plug gap for a MTD mower model # 11A038A729. It has a Briggs 12M902 0451 E1. Thanks.
The proper gap is ..030″ Here is the Briggs application chart for L-Head engines like yours.