Toro lawn mower troubleshooting

Toro is a US-based company specializing in lawnmowers, snow removal equipment, and water-saving irrigation system supplies. The manufacturer is headquartered in Bloomington, Minnesota. The company was created in 1914, and its original purpose was to build tractor engines for the Bull Tractor Company. However, in the course of time its range grew wider, and now it includes a variety of lawn equipment.
Looking for reliable repair tips? This is exactly what you’ll find below. The tables below list the most common malfunctions (lawnmower won t start etc.). Whatever the problems are (for instance, your lawnmower is not working for more than a week or is not starting), we have a solution.

Toro 30187 lawn mower troubleshooting

The 30187 number can refer to three models produced by the US manufacturer of lawn care equipment Toro. Models with this number are mid–size traction units varying by power (some lawnmowers have a 15hp engine, while others have a 14hp engine).

PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION
Engine will not start, starts hard, or fails to keep running.1. Fuel tank is empty.1. Fill fuel tank with gasoline.
2. Choke is not ON.2. Move choke lever to ON.
3. Air cleaner is dirty.3. Clean or replace air cleaner element.
4. Spark plug wire is loose or disconnected.4. Install wire on spark plug.
5. Spark plug is pitted, fouled, or gap is incorrect.5. Install new. correctly gapped spark plug.
6. Dirt in fuel filter.6. Replace fuel filter.
7. Dirt, water, or stale fuel is in fuel system.7. Contact Authorized Service Dealer.
8. Battery is dead.8. Charge battery.
Engine loses power.1. Engine load is excessive.1. Reduce ground speed.
2. Air cleaner is dirty.2. Clean air cleaner element.
3. Oil level in crankcase is low.3. Add oil to crankcase.
4. Cooling fins and air passages under engine blower housing are plugged.4. Remove obstruction from cooling fins and air passages.
5. Spark plug is pitted, fouled, or gap is incorrect.5. Install new. correctly gapped spark plug.
6. Vent hole in fuel cap is plugged.6. Clean or replace the fuel cap.
7. Dirt in fuel filter.7. Replace fuel filter.
8. Dirt, water, or stale fuel is in fuel system.8. Contact Authorized Service Dealer.
Engine overheats.1. Engine load is excessive.1. Reduce ground speed.
2. Oil level in crankcase is low.2. Add oil to crankcase.
3. Cooling fins and air passages under engine blower housing are plugged.3. Remove obstruction from cooling fins and air passages.
Abnormal vibration.1. Engine mounting bolts are loose.1. Tighten engine mounting bolts.
2. Loose engine pulley, idler pulley, or blade pulley.2. Tighten the appropriate pulley.
3. Engine pulley is damaged.3. Contact Authorized Service Dealer.
Machine does not drive.1. Hydrostatic fluid level low. 1. Fill hydrostatic fluid tank.
2. Traction belt is worn, loose or broken. 2. Change Belt.
3. Traction belt is off pulley. 3. Change Belt.
Machine does not drive up hills or inclines.1. By-pass valve is adjusted too far open. 1. Adjust by-pass valve
Machine moves slowly in neutral.1. Neutral is mis-adjusted. 1. Adjust hydro pump neutral.
2. Return spring is broken or missing. 2. Replace return spring.
3. Linkage is dirty or bent. 3. Clean and lubricate linkage. Replace bent or worn parts.
Machine drive is too aggressive. Mower lifts when drive is engaged.1. By-pass valve is adjusted too far closed. 1. Adjust by-pass valve

Toro 71429 lawn mower troubleshooting

Creators of the Toro 71429 lawnmower refer to this model as Wheel Horse XL 440H lawn tractor. It has several features that make working with this lawn tractor easier, for instance the possibility of adjusting the front-to-rear blade slope, setting the height of cut etc.

ProblemPossible CausesCorrective Action
The starter does not crank.1. The blades (PTO) are engaged.1. Push the blade control (PTO) to Disengaged.
2. The parking brake is not on.2. Set the parking brake.
3. The battery is dead.3. Charge the battery.
4. The electrical connections are corroded or loose.4. Check the electrical connections for good contact.
5. A fuse is blown.5. Replace the fuse.
6. A relay or switch is damaged.6. Contact an Authorized Service Dealer.
The engine will not start, starts hard, or fails to keep running.1. The operator is not seated.1. Sit on the seat.
2. The fuel tank is empty.2. Fill the fuel tank with gasoline.
3. The air cleaner is dirty.3. Clean or replace the air cleaner element.
4. The spark plug wire is loose or disconnected.4. Install the wire on the spark plug.
5. The spark plug is pitted, fouled, or the gap is incorrect.5. Install a new, correctly-gapped spark plug.
6. The choke is not closing.6. Adjust the throttle cable.
7. There is dirt in the fuel filter.7. Replace the fuel filter.
8. The idle speed is too low or the mixture is incorrect.8. Adjust the carburetor idle speed and idle mixture.
9. Dirt, water, or stale fuel is in the fuel system.9. Contact an Authorized Service Dealer.
The engine overheats.1. The engine load is excessive.1. Shift into lower gear to reduce ground speed.
2. The oil level in the crankcase is low.2. Add oil to the crankcase.
3. The cooling fins and air passages under the engine blower housing are plugged.3. Remove the obstruction from the cooling fins and air passages.
The engine loses power.1. The engine load is excessive.1. Shift into lower gear to reduce ground speed.
2. The air cJeaner is dirty.2. Clean the air cleaner element.
3. The oil level in the crankcase is low.3. Add oil to the crankcase.
4. The cooling fins and air passages under the engine blower housing are plugged.4. Remove the obstruction from the cooling fins and air passages.
5. The spark plug is pitted, fouled, or the gap is incorrect.5. Install a new. correctly-gapped spark plug.
6. The vent hole in the fuel cap is plugged.6. Clean or replace the fuel cap.
7. There is dirt in the fuel filter.7. Replace the fuel filter.
8. Dirt, water, or stale fuel is in the fuel system.8. Contact an Authorized Service Dealer.
There is abnormal vibration.1. The cutting blades are bent or unbalanced.1. Install a new cutting blades.
2. The blade mounting bolt is loose.2. Tighten the blade mounting bolt.
3. The engine mounting bolts are loose.3. Tighten the engine mounting bolts.
4. There is a loose engine pulley, idler pulley, or blade pulley.4. Tighten the appropriate pulley.
5. The engine pulley is damaged.5. Contact an Authorized Service Dealer.
The blades does not rotate.1. The blade drive belt is worn, loose, or broken.1. Install a new blade drive belt.
2. The blade drive belt is off of the pulley.2. Install a blade drive belt and check the idler pulley and belt guides for the correct position.
The tractor does not drive.1. The drive control is in the Push position.1. Move the drive control to the Operate position.
2. The traction belt is worn, loose, or broken.2. Contact an Authorized Service Dealer.
3. The traction belt is off of the pulley.3. Contact an Authorized Service Dealer.
The cutting height is uneven. The mower is cutting unevenly.1. The tire pressure is incorrect.1. Set the tire pressure.
2. The mower is not level.2. Level the mower from side-to-side and front-to-rear.
3. The underside of the mower is dirty.3. Clean the underside of the mower.
4. The gage wheels are improperly adjusted.4. Adjust the gage wheels.

Toro 74946 lawn mower troubleshooting

The Toro 74946 lawnmower belongs to the Z Master®Series. It is a riding mower with 60in and 72in turbo force discharge. The rotary-blade mower is designed for cutting grass on well-maintained lawns on residential or commercial properties. The 74946 mower can be used both by residential homeowners or professional operators.

ProblemPossible CauseCorrective Action
The oil-temperature light is on and the engine rpm is low.1. The engine-control unit has limited engine rpm, known as “limp" mode.1. Check the engine-oil level. If the level is above the “add" line, contact an Authorized Toro Service Dealer.
The oil-pressure light is on and the engine rpm is low.1. The engine-control unit has limited engine rpm, known as “limp" mode.1. Let the engine cool and check the engine-oil level. If the level is above the “add" line, contact an Authorized Toro Service Dealer.
The malfunction indicator light (MIL) comes on.1. The engine is too hot.1. Turn the engine off and let it cool.
2. There is old gas in the gas tank.2. Use new gas.
3. The fuel-shutoff valve is not open completely.3. Open the fuel-shutoff valve.
4. The air cleaner is dirty.4. Make sure that the air cleaner and precleaner are clean. Replace if necessary.
5. The battery is not charged.5. Charge or replace the battery.
6. Inconect fuel filters are being used or the fuel filters are dirty.6. Contact an Authorized Service Dealer.
7. The connections to the sensors electronic control unit (ECU) and fuel injectors are not secured properly.7. Contact an Authorized Service Dealer.
8. There is low voltage from the battery.8. Ensure a good 12-volt battery is being used and is fully charged.
9. A fuse is blown.9. Check and replace any blown fuses.
The starter does not crank.1. The blade-control switch (PTO) is engaged.1. Move the blade-control switch (PTO) to the disengaged position.
2. The parking brake is not engaged.2. Set the parking brake.
3. The motion-control levers are not in the Neutral-lock position.3. Ensure that the motion-control levers are in the Neutral-lock position.
4. The operator is not seated.4. Sit on the seat.
5. The battery is dead.5. Charge the battery.
6. The electrical connections are conoded or loose.6. Check the electrical connections for good contact.
7. The fuse is blown.7. Replace the fuse.
8. The relay or switch is worn or damaged.8. Contact an Authorized Service Dealer.
The engine does not start, starts hard, or fails to keep running.1. The fuel tank is empty.1. Fill the fuel tank.
2. The fuel-shutoff valve is closed.2. Open the fuel-shutoff valve.
3. The oil level in the crankcase is low.3. Add oil to the crankcase.
4. The throttle is not in the correct position.4. Be sure that the throttle control is midway between the slow and fast positions.
5. There is dirt in the fuel filter.5. Replace the fuel filter.
6. There is dirt, water, or stale fuel in the fuel system.6. Contact an Authorized Service Dealer.
7. The air cleaner is dirty.7. Clean or replace the air-cleaner element.
8. The seat switch is not functioning properly.8. Check the seat-switch indicator. Replace the seat if necessary.
9. The electrical connections are corroded, loose, or damaged.9. Check the electrical connections for good contact. Clean the connector terminals thoroughly with electrical-contact cleaner, apply dielectric grease, and make the appropriate connections.
10. The relay or switch is worn or damaged.10. Contact an Authorized Service Dealer.
11. The spark plug is fouled or improperly gapped.11. Adjust or replace the spark plug.
12. The spark-plug wire is not connected.12. Check the spark-plug wire connection.
The engine loses power.1. The engine load is excessive.1. Reduce the ground speed.
2. The air cleaner is dirty.2. Clean the air-cleaner element.
3. The oil level in the crankcase is low.3. Add oil to the crankcase.
4. The cooling fins and the air passages above the engine are plugged.4. Remove the obstruction from the cooling fins and the air passages.
5. The vent hole in the fuel cap is plugged.5. Clean or replace the fuel cap.
6. There is dirt in the fuel filter.6. Replace the fuel filter.
7. There is dirt, water, or stale fuel in the fuel system.7. Contact an Authorized Service Dealer.
The engine overheats.1. The engine load is excessive.1. Reduce the ground speed.
2. The oil level in the crankcase is low.2. Add oil to the crankcase.
3. The cooling fins and the air passages above the engine are plugged.3. Remove the obstruction from the cooling fins and the air passages.
The mower pulls left or right (with levers fully forward).1. The tracking needs adjustment1. Adjust the tracking.
2. The tire pressure is not correct in the drive tires.2. Adjust tire pressure in the drive tires.
The machine does not drive.1. The bypass valves are not closed tight.1. Tighten the bypass valves.
2. The pump belt is worn, loose or broken.2. Change the belt.
3. The pump belt is off a pulley.3. Change the belt.
4. The idler spring is broken or missing.4. Replace the spring.
5. The hydraulic oil level is low or too hot.5. Add hydraulic oil to reservoirs or let it cool down.
There is an abnormal vibration.1. The cutting blade(s) is/are bent or unbalanced.1. Install new cutting blade(s).
2. The blade mounting bolt is loose.2. Tighten the blade mounting bolt.
3. The engine mounting bolts are loose.3. Tighten the engine mounting bolts.
4. The engine pulley, idler pulley, or blade pulley is loose.4. Tighten the appropriate pulley.
5. The engine pulley is damaged.5. Contact an Authorized Service Dealer.
6. The blade spindle is bent.6. Contact an Authorized Service Dealer.
7. The motor mount is loose or worn.7. Contact an Authorized Service Dealer.
Mowing is resulting in uneven cutting height.1. The blade(s) is/are not sharp.1. Sharpen the blade(s).
2. The cutting blade(s) is/are bent.2. Install new cutting blade(s).
3. The mower deck is not level.3. Level the mower deck from side-to-side and front-to-rear.
4. The underside of mower is dirty.4. Clean the underside of the mower.
5. The tire pressure is not correct.5. Adjust the tire pressure.
6. The blade spindle bent.6. Contact an Authorized Service Dealer.
The blades do not rotate.1. The mower deck belt is worn, loose, or broken.1. Install a new deck belt.
2. The mower deck belt is off the pulley.2. Install the mower deck pulley and check the idler pulley, idler arm. and spring for correct position and function.
3. The pump drive belt is worn, loose, or broken.3. Check the belt tension or install a new belt.
4. The idler spring is broken or missing.4. Replace the spring.
The clutch does not engage.1. A fuse is blown.1. Replace the fuse. Check the coil resistance, battery charge, charging system, and wiring connections and replace if necessary.
2. There is low voltage supply at the clutch.2. Check the coil resistance, battery charge, charging system, and wiring connections and replace if necessary.
3. The coil is damaged.3. Replace the dutch.
4. There is inadequate current supply.4. Repair or replace the clutch lead wire or electrical system. Clean the connector contacts.
5. The rotor/armature airgap is too large.5. Remove the shim or replace the dutch.

Error codes and troubleshooting