Why does my Toro 73542 operate erratically?
- VVincent SmithSep 23, 2025
If your Toro Lawn Mower operates erratically, fill the transmission oil to the full mark on the transmission oil dipstick when the transmission is cold.

Why does my Toro 73542 operate erratically?
If your Toro Lawn Mower operates erratically, fill the transmission oil to the full mark on the transmission oil dipstick when the transmission is cold.
What to do if Toro 73542 Lawn Mower engine cranks but won't start?
If your Toro Lawn Mower's engine cranks but doesn't start, first ensure you're following the correct starting procedure. Check if the fuel tank is empty and fill it with fresh fuel if needed. Make sure the fuel shut-off valve is open. Inspect the fuel system for dirt, water, or stale fuel, and drain and flush if necessary, then add fresh fuel. Also, check for a clogged fuel line and clean or replace it. Ensure the spark plug lead is connected and the spark plug isn't faulty; replace the spark plug if needed.
Why my Toro 73542 Lawn Mower engine cranks but will not start?
If your Toro Lawn Mower's engine cranks but doesn't start, begin by ensuring the fuel tank isn't empty and the fuel shut-off valve is open. Check for any dirt, water, or stale fuel in the fuel system. Also, make sure the spark plug lead is properly connected and the spark plug is in good condition. If the fuel line is clogged, clean or replace it.
Why Toro Lawn Mower engine starts but does not keep running?
If the engine of your Toro Lawn Mower starts but doesn't keep running, the fuel system may be the culprit. Dirt or water in the fuel system can cause this issue; drain and flush the system, then add fresh fuel. A clogged fuel filter could also be the problem, so replace it. Additionally, check for loose wires or poor connections and tighten them. A fuse may be blown or loose, so correct or replace it.
How to fix Toro 73542 Lawn Mower engine losing power?
If your Toro Lawn Mower engine is losing power, start by checking the crankcase oil level and adjust it to the full mark. Inspect the air cleaner element for dirt and clean or replace it if necessary. Additionally, ensure that the fuel system is free of dirt, water, or stale fuel by draining and flushing it, then adding fresh fuel. Replace a faulty spark plug. Reduce ground speed if the engine load is excessive.
Why does my Toro Lawn Mower engine overheat?
If your Toro Lawn Mower engine is overheating, ensure the crankcase oil level is correct by filling or draining to the full mark. Reduce the load and use a lower ground speed. Clean the air intake screens with every use. Also, clean the cooling fins and air passages under the engine blower housing and/or the rotating air intake screen with every use.
What to do if Toro Lawn Mower front wheels do not turn with the steering wheel (power steering models)?
If the front wheels of your Toro Lawn Mower (power steering model) do not turn with the steering wheel, there may be air in the hydraulic system. With the engine running, operate the lift and turn the steering wheel back and forth several times.
What to do if the starter does not crank on my Toro Lawn Mower?
If the starter on your Toro Lawn Mower isn't cranking, several factors could be at play. Ensure the PTO is in the off position and the parking brake is set. Confirm that you're seated properly. Check all electrical connections for corrosion or looseness, and inspect the fuse. If these steps don't resolve the issue, the battery may need charging or replacement.
What to do if Toro 73542 engine overheats?
If your Toro Lawn Mower engine overheats, ensure the crankcase oil level is correct by filling or draining to the full mark. Reduce excessive loading by using a lower ground speed. Clean the air intake screens and the cooling fins and air passages under the engine blower housing and/or the rotating air intake screen with every use.
What to do if my Toro Lawn Mower engine starts, but does not keep running?
If your Toro Lawn Mower starts but doesn't keep running, first ensure that there's no dirt or water in the fuel system. If the fuel filter is clogged, replace it. Check and tighten any loose wire connections, and make sure the fuse is working correctly; replace it if necessary.
| Brand | Toro |
|---|---|
| Model | 73542 |
| Category | Lawn Mower |
| Language | English |
Location and importance of product model and serial numbers for service.
General safety guidelines for operating the tractor to avoid injury.
Safe operation rules, operator responsibilities, and precautions for slopes.
Warnings regarding children and safety precautions during maintenance.
Specific safety information for Toro riding mowers not covered by general standards.
Identifies safety decals and their locations on the tractor for operator awareness.
Provides part numbers and service intervals for quick reference.
Instructions on how to open and close the tractor's hood for access.
Steps to remove the side panels for access to the tractor's components.
Procedures for adding fuel safely and using fuel stabilizer/conditioner.
Procedure for checking the engine oil level before operation.
Instructions on inspecting and cleaning the tractor for debris to prevent overheating.
Procedures to test the safety interlock system and check the brakes.
Review safety and familiarize with tractor controls before starting.
Procedures for starting, stopping the engine, and using the parking brake.
Operating PTO and understanding safety interlock systems.
Instructions for driving, steering adjustments, and stopping the tractor.
Operating attachment lift, positioning seat, and using lights.
Using cruise control and understanding the Smart Turn™ steering feature.
Procedures for servicing the air cleaner and engine oil/filter.
Maintenance tasks for spark plugs and general greasing of the machine.
Checking tire pressure, adjusting brakes, and fuel system maintenance.
Adjusting front wheel toe-in and servicing transaxle fluid/filter.
Maintenance of fuses, lights, and the battery.
Steps for cleaning the tractor and preparing it for storage.
Guidelines for storing the tractor, including fuel and battery.
Diagnosing problems with the starter or engine failing to start.
Troubleshooting for engine stalling, knocking, overheating, or power loss.
Diagnosing problems with the tractor's drive system and abnormal vibration.
Troubleshooting for PTO belt problems and other operational faults.
Details on what is covered, not covered, and owner responsibilities under warranty.
Steps to follow for initiating warranty service or repairs.