Toro Titan MX5400 User Manual

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FormNo.3394-246RevA

TITAN

®

MX4800,MX5400,or

MX6000Zero-Turn-RadiusRiding

Mower

ModelNo.74891—SerialNo.315000001andUp

ModelNo.74892—SerialNo.315000001andUp

ModelNo.74893—SerialNo.315000001andUp

Registeratwww.Toro.com.

OriginalInstructions(EN)

*3394-246*A

Table of Contents

Questions and Answers:

E
Edward ColeAug 18, 2025
Why won't my Toro Titan MX5400 engine start?
- S
  shane99Aug 18, 2025
  If your Toro Lawn Mower engine won't start, starts with difficulty, or stops running, several factors could be at play. First, ensure the fuel tank isn't empty and the fuel shutoff valve is open. Check that the oil level in the crankcase is sufficient. For starting, position the throttle midway between SLOW and FAST, using the choke (ON for a cold engine, OFF for a warm one). Other potential issues include a dirty fuel filter (replace it), a dirty air cleaner (clean or replace the element), or a faulty spark plug (clean, adjust, or replace it). Also, check the spark plug wire connection and ensure the seat switch is functioning correctly. Finally, inspect electrical connections for corrosion or looseness, cleaning and reconnecting as necessary.
J
Jessica PatrickAug 21, 2025
What to do if my Toro Titan MX5400 starter does not crank?
- M
  Miss Angela Carey MDAug 21, 2025
  If the starter on your Toro Lawn Mower isn't cranking, there are several things to check: * Ensure the blade-control switch (PTO) is disengaged. * Confirm that the parking brake is set. * Make sure the drive levers are in the NEUTRAL-LOCK position. * Verify that the operator is seated. Also, check if the battery is dead (charge it), if the electrical connections are corroded or loose (check for good contact), or if the fuse is blown (replace it). If none of these steps resolve the issue, the relay or switch might be defective, and you should contact an Authorized Service Dealer.
A
anthonycooperAug 23, 2025
Why is my Toro Lawn Mower engine losing power?
- C
  Crystal EricksonAug 23, 2025
  If your Toro Lawn Mower engine is losing power, consider these possible causes. First, the engine load may be excessive, so reduce the ground speed. Check the air cleaner element and clean it if it's dirty. Ensure the oil level in the crankcase is adequate by adding oil if needed. Clear any obstructions from the cooling fins and air passages above the engine. Also, verify the vent hole in the fuel cap isn't plugged; clean or replace the cap if necessary. Lastly, if there is dirt in the fuel filter, replace it.
M
Michael BallAug 26, 2025
What to do if my Toro Titan MX5400 won't drive?
- J
  joelsanchezAug 26, 2025
  If your Toro Lawn Mower isn't driving, check the following: Ensure the bypass valves are tightened. Inspect the pump belt for wear, looseness, or breakage; change the belt if needed. Verify the pump belt is correctly positioned on the pulley. If the idler spring is broken or missing, replace it. Finally, check the hydraulic oil level; add oil to the reservoirs if it's low, or allow it to cool down if it's too hot.
S
sherrytorresAug 28, 2025
Why are the blades not rotating on my Toro Lawn Mower?
- J
  Joseph PowellAug 28, 2025
  If the blades on your Toro Lawn Mower aren't rotating, it could be due to several reasons. Check the mower deck belt for wear, looseness, or breakage; install a new deck belt if necessary. If the mower deck belt is off the pulley, reinstall it and inspect the idler pulley, idler arm, and spring for proper positioning and function. Also, inspect the pump drive belt for wear, looseness, or breakage; check the belt tension or install a new belt. Finally, if the idler spring is broken or missing, replace it.
C
Christopher JohnsonAug 30, 2025
What causes uneven cutting height on my Toro Lawn Mower?
- L
  Lisa MorganAug 30, 2025
  If your Toro Lawn Mower is cutting unevenly, there are several potential causes. First, the blades might not be sharp, so sharpen them. If the cutting blades are bent, replace them. Ensure the mower deck is level from side-to-side and front-to-rear. Clean the underside of the mower if it's dirty. Check and adjust the tire pressure. If the blade spindle is bent, contact an Authorized Service Dealer.
S
Steven HurleySep 1, 2025
How to fix Toro Titan MX5400 engine when it loses power?
- N
  Nathan DonaldsonSep 2, 2025
  If your Toro Lawn Mower engine loses power, consider these solutions: * Reduce the ground speed. * Clean the air cleaner element. * Add oil to the crankcase. * Remove any obstructions from the cooling fins and air passages. * Clean or replace the fuel cap. * Replace the fuel filter.
U
ufergusonSep 3, 2025
Why aren't the blades rotating on my Toro Titan MX5400 Lawn Mower?
- S
  Steven JohnsonSep 3, 2025
  If the blades on your Toro Lawn Mower do not rotate, you can try: * Installing a new deck belt. * Installing the mower deck pulley and checking the idler pulley, idler arm, and spring for correct position and function. * Checking the belt tension or installing a new belt. * Replacing the spring.
B
Brittany WilliamsSep 6, 2025
How to prevent my Toro Titan MX5400 Lawn Mower engine from overheating?
- A
  Ashlee WiseSep 6, 2025
  If your Toro Lawn Mower engine is overheating, here are a few things to investigate. First, the engine load might be too high, so try reducing the ground speed. Also, check the oil level in the crankcase and add oil if it's low. Finally, make sure the cooling fins and air passages above the engine are free of any obstructions; remove any debris you find.
M
Mark HamiltonSep 8, 2025
Why is my Toro Lawn Mower vibrating so much?
- R
  ryanmasonSep 8, 2025
  If your Toro Lawn Mower is vibrating abnormally, several issues could be the cause. Start by checking the cutting blades for bending or imbalance; replace them if necessary. Ensure the blade mounting bolt and engine mounting bolts are tightened securely. Also, inspect for any loose engine pulleys, idler pulleys, or blade pulleys, and tighten them as needed. If the engine pulley is damaged, the blade spindle is bent, or the motor mount is loose or worn, contact an Authorized Service Dealer.

Toro Titan MX5400 Specifications

General

Cutting Width	54 inches
Fuel Capacity	5 gallons
Transmission	Hydrostatic
Spindle Material	Cast aluminum
Number of Blades	3
Warranty	3-year limited
Ground Speed Forward	8.5 mph
Ground Speed Reverse	4 mph
Cutting Height	1.5 - 4.5 in / 3.8 - 11.4 cm
Deck Material	10-Gauge High-Strength Steel
Blade Tip Speed	18, 000 ft/min

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