This video troubleshoots a starter solenoid, along with other possible causes, including a bad starter motor, a wiring failure, a weak battery or a locked-up engine.

Batteries don't like sitting idle, they were designed to be charged and discharged continuously.

Check the solenoid terminals, all wiring should be secure and free from corrosion.

It will very often show you where the fault is.

If you're still reading, I fear the worst has happened. If your lucky you can get the straw of the wd40 directed at the gear head without removing any covers.

Learn how to troubleshoot why your riding lawn mower won\u2019t turn over or click when you turn the key to start the engine. You'll find a link to a good feeler gauge set on the "Small engine repair tools" page..

I've been a mechanic for over twenty years, I use my knowledge and experience to write "How to" articles that help fellow gear-heads with all aspects of mechanical repairs, from lawn mowers to classic cars. If you do hear a click sound when you turn the key, check out - "Mower Wont Start Just Clicks".

Outdoor Gasoline and Electric Powered Equipment and Small Engines - Husqvarna riding mower will not crank - I have a Husqvarna YTH24K48 riding mower. This video shows how to check the battery, solenoid posts and coil, fuse, ignition switch, brake interlock switch and blade switch. So if you have this newer type carburettor fitted, it's not likely you will have a hydro-locking condition.

The quick fix - hold down the lever to start the mower.

All modules will have a fuse either internal or external.

Wiring pin outs are specific to each manufacturer.

They're cheap and easy to fit. Replacing is simple, just pull out the old one and replace. Check battery voltage using dvom - attach volt meter to the battery and set to 20 volts. You can check sensors for continuity using a volt meter.

As you know the. Wiring specs for ignition systems vary, so I can't be more detailed.

If when removing the spark plug, gas pours from the spark plug hole - move on and check "Carburettor troubleshooting". Cross a metal screwdriver from one connection to the other, as per picture.

Wiring specs for ignition systems vary, so I can't be more detailed. The soda neutralises and removes the acid, you'll need gloves and protective eye wear.

Before we assume there's a problem, lets take take a minute to check that we're following the correct starting procedure. Electrically - the copper winding can break; brushes can break or wear out. Some engines will have a cover over the flywheel, if so, try turning the crankshaft with ratchet and socket, from the underside of the engine. Like the ignition switch, wires come loose, have a helper attempt to start the engine while you wiggle the wiring connectors. Use a Dvom to check battery voltage, simply connect red to positive and black to negative. Jump start mower - This is the fastest solution, but it may not be the long term fix.

Can a bad alternator ruin a battery? The fix - replace the seal or the complete carburetor.

Starters can bind against the flywheel. Be mindful that B&S have two types of starter - plastic gear head or metal, check before ordering. Often just finding the starter solenoid can be challenging, I sometimes think that they hide them for fun.

So when you hit the key all you hear is the click sound.

Sometimes finding it is the hardest part. This usually causes unreliable starting and shut downs. Check out "Valve lash adjusting" it's for a walk behind mower, but the process is identical.

... Control Modules are not fitted to all mowers. Battery cables become loose because lawn tractors vibrate a lot, this is why it's a good idea to service your mower at the start of every season, no matter how well she runs.
All modules will have a fuse either internal or external - Check it. Using your manual fuel valve will prevent future problems.

Check out "Carburettor types" page, it list popular mower carburettors.

When it blows all power is lost, changing it is simple. Failure commonly occurs in the older type carburettor when the rubber needle seal wears. I have listed the likely causes in order of commonality. Some starters will have a solenoid and starter motor combined in one unit.

A battery that gets fully discharged will sometimes not come back to life. Modules could be fitted anywhere, they are usually fitted inside a hard plastic box about the size of a mobile phone.

Be mindful all engines are shipped without oil. When valve lash is set correctly - you crank over the engine, the valves open and release cylinder pressure.

main fuse in a mower can blow, and if it does, it will kill the power to the ignition system. If your mower won't crank and makes no click sound - Check out "Lawn Tractor Won't Start".

The gear head of the starter motor can bind against the flywheel, this locks the engine and starter motor together. The length of time on charge will depend how low the battery is and the amp rating of the charger. My Husqvarna YTH2348 tractor won't start. The control module will often live behind the dash board in a plastic box about the size of a mobile phone. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites. If you have no lights - Need a volt meter to check battery voltage 12.65v is 100%, 12.30v is 70%, 12.05v is 50% charged.

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echanically - bearings top and bottom can wear, and the gear head can wear. If you're unable, it's likely you have excessive valve lash. Common problems includes, faulty regulator which damages the battery and alternator diode failure which drains the battery. A flat battery is a real pain in the ass.

You can jump-start from any 12 volt vehicle.

Starter motor for Briggs and Stratton offer a good quality starter.

Other signs that your carburettor needle seal leaks, are: over full oil level; white smoke from the muffler; oil leaking from the muffler; gas dripping from carburettor; strong smell of gas in the garage.

The lever spring gets weak and leaves the sensor in the open position which prevents starting.

So if you have this newer type carburettor fitted, it's not likely you will have a hydro-locking condition. Can you jump start a mower?

You can check out the starting procedure here -. Common Ignition switch problems, include: John Cunningham is an Automotive Technician and writer on

sensors are: brake pedal; seat; gear lever; blade engage control switch or lever and some models such as John Deere will have one fitted to the hood (Hood open - no start). The average life of a battery is 4 years, more if well cared for. But if the leaking is excessive, don't jump start, replace it. You can check the battery and alternator using a volt meter. If you have some petroleum jelly, a small coat will prevent a future build up. Check that both connections, positive (RED + ) and negative (BLACK - ) are clean and tight. You can check the battery and alternator using a volt meter. If you can, place your hands on the flywheel screen - try turning the engine clockwise.

Turning the engine anti-clockwise by hand will unlock it.

The most common reason for a no start, not even a click sound, is a totally flat battery, but other likely causes include: A tractor mower won't start if the blade lever/button is on, manual mowers need to be in Neutral gear, some mowers won't allow starting if the oil level is low or the hood is open. The solenoids job is to connect the battery to the starter motor and crank over the engine for as long as you hold the key.
You can visually inspect these modules for loose connections or water damage to the printed circuit. To clean the connections, add a couple of spoons of baking soda and a small amount of water, poor this on to the build up of acid on the connections and battery poles. On some engines the starter and solenoid will be one unit (Kawasaki and Honda engines). Solenoid's are fitted to the body usually under the hood. Husqvarna, craftsman like to hide theirs under the rear wheel fender or under the dash beside the steering column. Please enable Cookies and reload the page. So why won't your lawn tractor start, not even a click? As the engine wears this gap gets bigger, and will need to be adjusted. I have seen failures like: con rod breaking out through the engine casing; main bearing seizing; con rod bending; cylinder head failures. Ignition switches - send commands to the control module if fitted. The acid then crystallises causing high resistance, it looks like a white chalky build up on the connectors. The needle wears over time, they turn pink when worn.
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Wed. Nov 4th, 2020

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