Experienced gardeners share their insights in answering this question :
Could you post a model number please? On many newer riding lawn mowers there is a seat switch that has to be activated by someone sitting in the seat to start the engine. Check for any loose wires or disconnected wires from the seat switch. Also the engine must have the correct amount of oil in it. There is an oil level sensor that will ground the ignition / kill the spark if the oil level is too low.
So check the seat switch (IF installed) and the oil level. If there is a seat switch in the seat there should be a seat safety note in your owners manual.
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Your Mower Won`t Start:
Other possible causes include: Loose, Dirty or Disconnected Spark Plug in Your Lawn Mower: Check it out, clean off debris, re-connect and tighten. Dirty Air Filter: Clean or replace. Fuel Not Reaching the Engine: Tap the side of the carburetor to help the flow of gas.
Disconnected, dirty or fouled spark plugs are common causes for engines that won`t start. For small engines, spark plugs typically need to be replaced every season or after 25 hours of use. You should also check to make sure the spark plug gap is set correctly.
The clicking noise comes from a part called the starter solenoid. The solenoid connects the battery to the starter motor when the solenoid is energized. The key switch and the safety switches in the starter circuit combine to energize the solenoid. If the solenoid is clicking, the circuit that triggers it is working.
If your lawnmower is starting and then stalling, the most likely issue is the carburetor. The most common issue is that the carburetor is dirty. Here`s what you need to know about how a dirty carburetor can cause a lawnmower to start, then stall out and die.
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.
Discover Relevant Questions and Answers for Your Specific Issue
the most relevant questions and answers related to your specific issue
Toro clear won't start – Toro Power Clear 621 R
Bad gas , plug ,air filter , no spark ck all need all 3 to start
Toro 149cc Lawn Mower Won't Start – Toro Lawn Mower With Toro Power Tools
Bad carburetor your old fuel jammed up the jet so it won’t get fuel and if it does it will start and shut off So replace the carb or try to clean the jet and run non oxy fuel only
My engine is leaking oil down the shaft so much so that when filled with oil the oil simply drains out and the lawnmower won’t start could you tell me what might be the cause and if so how can I fix
There is a crankshaft seal at the bottom of the case/crankshaft area that can be pulled and replaced. Using a pick or drilling a small hole in the seal and then screwing a small screw into the hole will faciltate seal removal
Mower won’t start
This may sound stupid but don’t mean it to…
Have you tried with the choke all the way open? Do you have an automatic cruise? Is the right (correct) pedal being pushed in? These will affect if it starts or not. Also if your drive belt or one of the other belts not being tight enough will affect if it starts or just turns over. Not too many things can stope it from starting with new/good battery AND if its getting gas. Try cleaning your gas line and obviously making sure there is no obstruction around or near your blade, if it does start with blade engaged that is :))
If it doesn’t start with blade engaged, well make sure it’s in neutral. Mine won’t start in reverse but will in forward or neutral.
Hope it helps.
My lawn mower won't start – Brute 7800802 22-Inch 190cc Briggs & Stratton 675 Series Gas Powered FWD Self Propelled Lawn Mower With High Rear Wheels
Your carb is jammed up with ethonal eithier clean t out or replace the carb and run non oxy fuel from now on and u won’t ever have any issues AGIAN
The lawnmower won t start after pulling the start up cord . changed the spark plug it still won t start
Try a touch of starting fluid right into the carburator by taking the air filter off. If it then starts but wont run or stay running, the reservoir below the carb should be removed to clean at and the pinhole in the intake tube above the bowl nut. This is the most common problem with lawnmower start problems, the pinhole can be unplugged with one wire from a wire brush. Be careful with the gas, at least pinch off the gas hose with a vise grips while removing the carb bowl.. Never use a droplight around gasoline.
B&S Quantum Power 4hp won’t start with fresh plug,
Did it run before you changed the plug?Gap is correct, flywheel shear pin may be bad, Water in the Gas?
While trying to start the saw the compression is so great that it is near imposible to pull the start rope ….ie won’t spin fast enough to start … new plug ,,,, new gas …..no start ,,,tired arm ,??????
Is there a compression release button?