White Outdoor GT-2550 User Manual

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OPERATOR’S MANUAL

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

PRINTED IN U.S.A. FORM NO. 770-10315

Warning:

This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-

covered, brush-covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting

applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.

In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have

similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized

service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-9722.

(11/99)

Hydrostatic Garden Tractor

Models GT-2150

WHITE OUTDOOR PRODUCTS COMPANY P.O. BOX 361131 CLEVELAND, OHIO 44136-9722

GT-2550

Questions and Answers:

A
Angela LeAug 17, 2025
Why White Outdoor Lawn Mower engine fails to start?
- M
  Matthew EdwardsAug 17, 2025
  Your White Outdoor Lawn Mower may fail to start due to several reasons. Ensure the PTO knob is disengaged and the parking brake is engaged. Check that the spark plug wire(s) are connected, the throttle lever is in the FAST position, and the choke is activated. The fuel tank should be filled with fresh gas (less than 30 days old), and the fuel line should be clear. A faulty spark plug should be cleaned, adjusted, or replaced. If the engine is flooded, crank it with the throttle in the FAST position.
C
cooperbillyAug 20, 2025
What to do if White Outdoor Lawn Mower engine runs erratic?
- A
  anthonychenAug 20, 2025
  If your White Outdoor Lawn Mower engine runs erratically, there are a few things you can check. First, make sure the choke control is pushed in. Next, verify that the spark plug wire(s) are securely connected and tightened. A blocked fuel line or stale fuel can also cause issues, so clean the fuel line and fill the tank with fresh gasoline (less than 30 days old). Additionally, check if the vent in the gas cap is plugged and clear it or replace the cap if damaged. If there's water or dirt in the fuel system, drain the fuel tank and refill it with clean, fresh gasoline. Lastly, a dirty air cleaner can contribute to the problem, so replace the air cleaner cartridge/element or clean the pre-cleaner if your mower has one.
C
Catherine TaylorAug 22, 2025
Why White Outdoor GT-2550 engine overheats?
- H
  hharrisAug 22, 2025
  If your White Outdoor Lawn Mower engine overheats, it could be due to low engine oil level. Fill the crankcase with the proper capacity and weight of oil. Also, check for restricted airflow and clean any grass clippings and debris from around the engine’s cooling fins and blower housing.
E
Edward ColemanAug 26, 2025
What causes excessive vibration in White Outdoor GT-2550?
- L
  Luke ReynoldsAug 26, 2025
  Excessive vibration in your White Outdoor Lawn Mower can be caused by a loose or unbalanced cutting blade. Make sure to tighten the blade and spindle. Another cause could be a damaged or bent cutting blade, which would need to be replaced.
C
cheryl94Aug 28, 2025
How to fix uneven cut with White Outdoor GT-2550?
- J
  Jamie GriffinAug 28, 2025
  To fix an uneven cut with your White Outdoor Lawn Mower, first, perform a side-to-side deck adjustment if the deck is not balanced properly. If the blade is dull, sharpen or replace it. Finally, check the tire pressure in all four tires to ensure they are even.
J
jean37Aug 31, 2025
What to do if White Outdoor GT-2550 Lawn Mower idles poorly?
- J
  Jose ReyesAug 31, 2025
  If your White Outdoor Lawn Mower idles poorly, it could be due to a spark plug issue. Replace the spark plug if it's fouled, faulty, or has a gap that is too wide. Another potential cause is a dirty air cleaner, so replace the air cleaner cartridge/element or clean the pre-cleaner if your mower is equipped with one.
K
Kathleen EnglishSep 2, 2025
Why White Outdoor GT-2550 engine hesitates at high RPM?
- G
  gvelasquezSep 2, 2025
  If your White Outdoor Lawn Mower engine hesitates at high RPM, it may be due to the spark plug gap being too close. Remove the spark plug and reset the gap.
A
anthonyevansSep 8, 2025
What to do if White Outdoor Tractor engine cranks but will not start?
- A
  Andrew WilsonSep 8, 2025
  If your White Outdoor Tractor's engine cranks but doesn't start, first ensure that the throttle and choke are in the correct starting positions. Refer to the OPERATION section of this manual for guidance. Also, check if the gasoline tank is empty and fill it if necessary. A plugged fuel line or in-line fuel filter can also prevent starting; remove and clean the fuel line, and replace the fuel filter if needed. If there's no fuel reaching the carburetor, further investigation is required. Additionally, check for spark at the spark plug(s) using a spark tester. If no spark is present, have the engine’s magneto serviced by an authorized engine dealer. Lastly, a dirty air cleaner can cause starting issues; refer to the engine manual for cleaning instructions.
E
Emily FarmerSep 12, 2025
Why does my White Outdoor Tractor engine smoke?
- R
  rwareSep 12, 2025
  If your White Outdoor Tractor engine smokes, the engine oil may be overfilled, so check the oil level. Other potential causes include the engine losing crankcase vacuum, a dipstick that is not seated or is broken (replace the defective part), or a defective engine breather (replace it).
H
hornrandallSep 13, 2025
How to stop excessive vibration in White Outdoor Tractor?
- M
  Mike HansenSep 13, 2025
  If you experience excessive vibration with your White Outdoor Tractor, stop the engine immediately. A bent blade or damaged pulley could be the cause. Check all pulleys, blade adapters, keys, and bolts for tightness and any spindle damage.

White Outdoor GT-2550 Specifications

General

Brand	White Outdoor
Model	GT-2550
Category	Lawn Mower
Language	English

Summary

Finding Your Model Number

Important Safe Operation Practices

General Operation Safety

Key safety rules and instructions for operating the lawn mower safely.

Tractor Set-Up Procedures

Gas and Oil Fill-Up

Attaching the Cutting Deck

Step-by-step instructions for mounting the cutting deck to the tractor.

Tractor Controls Overview

Ignition Switch Operation

Throttle Control Lever

Adjust engine speed with the throttle control lever for optimal performance.

Drive Pedal and Brake Pedal Functions

Understand how to use the drive and brake pedals for tractor movement.

Tractor Operation Basics

Safety Interlock System

Setting the Cutting Height

Starting the Engine

Step-by-step guide for starting the tractor's engine.

Engine Stopping and Driving Procedures

Procedures for safely shutting down the engine and basic tractor driving.

Driving on Slopes

Mowing Guidance

Adjustments and Settings

Steering and Carburetor Adjustments

Cutting Deck Leveling

Maintenance Procedures

Engine and Fluid Service

Covers engine oil, filters, spark plugs, and hydrostatic transmission care.

Deck Belt Replacement

Cutting Deck Removal and Installation

Transmission Drive Belt Replacement

Cutting Blade Maintenance

Troubleshooting Common Tractor Issues

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