Lawnboy mower model 10743 will not start

1. Out of GAS: It sounds crazy, but it happens!
   Make sure you check your fuel level each time before you fire up your mower.
2. Stale Gas Leads to Clogged Carburetor: How long ago did you fill up your gas tank? And how old was the gas you used?
   Gas only has a shelf life of about 30 days because of the ethanol it contains. If you have old gas in your tank, the ethanol may have caused corrosion and clogged your carburetor.
3. Clogged fuel filter: The purpose of the fuel filter is to filter out all of the sediment from the gasoline.
   This filter can get clogged up from normal sediment, or from stale gas containing ethanol.
   The lack of proper fuel flow to the carburetor will prevent your mower from starting.
   If this is the case, the fuel filter will need to be replaced.
4. Dead Battery: Batteries typically last a long time, but there isn't always a warning sign that it is going dead. Check your battery with a voltmeter to see if it's lacking juice.
   If you have a 12V battery, the voltage should read very close to 12V. If it's less, your battery may not have enough juice to start the mower.
5. BAD STARTER SOLENOID: If you turn the key in your ignition, and hear a clicking sound, it is probably your starter solenoid.
   If you notice this clicking, your best bet is to install a new starter solenoid.
6. DISCONNECTED DIRTY SPARK PLUG: Did you recently perform maintenance? Maybe you left your spark plug wire un-hooked! Be sure to check this out, this is a quick and simple fix.
   Your spark plug could also be dirty or damaged. Spark plugs are cheap, so try replacing your spark plug.

indicates that the voltage regulator is not supplying power to run the electric clutch for the cutter deck and the power is being taken away from the ignition

wherever it runs the best.

ck. governor linkage connections

check for water in fuel or stale fuel. May need carb diaghram replaced

Battery is likely dead - or has built a sediment bridge - shorting the anode and cathode.
Jump-start the tractor with your vehicle - or another battery to check.

Or - use a multimeter to ensure your battery is not draining to 0V when you attempt to start.
This also indicates a failed battery. It may have a decent float charge - but when the load starter) is applied - the voltage will drop right out.

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The battery needs to be checked.If its running with jump start this indicates that mower is fine but the battery is not supporting it for normal start.In some cases the battery has low charge so getting the battery charged helps.In some cases the battery is dead so battery needs to be replaced.And in some cases the battery is new ,its charged but actually the terminals from the battery gets rusted and do not get connected so this leads the problem.So check the battery,if its low on charge get it charged,if its not getting charged then replace the battery ,if its charged and new then clean its terminals and reconnect and check. But if battery is properly charged and connected properly ,then also you see the same problem then its fault in the starter and starter solenoid.It needs to be checked and replaced.
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if you play with it u will void the warrantee. call the dealer u got it from

Hi
Sounds like a clogged carb which is a common problem for snowblowers due to they set around more then they get used and gas turns stale and clogs carb. Most of the times the problem is in the bolt that holds the carb bowl on it should have 2 or 3 small holes in it. Check that the holes are all open and clean if this does not help you will need to remove and clean whole carb.
Sam
Please vote

I would try and remove carb and clean it thuroughly. You can soak the parts in solvent or equivelant. The carb would be right after the air filter tube to the intake of engine.