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Kubota ZD28-EC - User Manual

Kubota ZD28-EC
253 pages
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ZD21N-EC,ZD21-EC,ZD28-EC
WORKSHOP MANUAL
ZERO TURN MOWER
KiSC issued 09, 2006 A

Table of Contents

Questions and Answers

  • W
    whitesallyAug 9, 2025
    What to do if Kubota ZD28-EC Lawn Mower power output is deficient?
    • J
      Jennifer WadeAug 9, 2025
      If your Kubota Lawn Mower has deficient output, try the following: adjust the injection timing, repair or replace the engine’s moving parts, repair or replace the injection pump, repair or replace the nozzle, or replace the head gasket and tighten cylinder head screws, glow plugs, and nozzle holders.
  • W
    William BryantAug 16, 2025
    Why is my Kubota ZD28-EC Lawn Mower producing black exhaust?
    • J
      Jay WoodsAug 16, 2025
      If you notice black or dark gray exhaust gas from your Kubota Lawn Mower, try these solutions: lessen the load, use the specified fuel, replace the fuel filter, clean or replace the air cleaner element, or repair or replace the nozzle.
  • M
    Matthew LloydAug 23, 2025
    How to fix an uneven Kubota ZD28-EC engine?
    • S
      Sheila ShawAug 25, 2025
      If your Kubota Lawn Mower engine revolution is not smooth, you can try the following: replace the fuel filter, clean or replace the air cleaner element, tighten the retaining nut, repair or replace the injection pump, adjust nozzle injection pressure, repair or replace the injection nozzle, or repair the governor.
  • S
    scott69Aug 30, 2025
    Why is my Kubota Lawn Mower blowing blue or white smoke?
    • L
      Lisa MoodyAug 31, 2025
      If you observe white or blue exhaust gas from your Kubota Lawn Mower, here are a few things you can try: reduce to the specified engine oil level, repair the piston ring and bore an oversize piston, adjust the injection timing, or replace each of the bearings.

Summary

Safety First

Specifications

General Information

General Precautions

Essential safety and handling precautions for servicing.

Maintenance Check List

A comprehensive list of maintenance tasks and their service intervals.

Engine System

Engine Disassembly and Servicing Procedures

Procedures for checking, disassembling, and servicing engine parts.

Transaxle System

Transaxle Disassembly and Assembly

Procedures for disassembling and assembling transaxle components.

Front Axle System

Front Axle Checking and Adjusting

Procedures for checking and adjusting front axle components.

Hydraulic System

Hydraulic Circuit Diagram

Diagram and explanation of the hydraulic system circuit.

Hydraulic Control Valve and Valve Adaptor

Explanation of the hydraulic control valve and its adaptor.

Hydraulic System Servicing

Procedures for servicing hydraulic components.

Electrical System

Wiring Diagram

Electrical wiring diagram for the machine.

Rotary Mower

Kubota ZD28-EC Specifications

General IconGeneral
TypeZero-Turn Mower
Engine TypeDiesel
Gross Power28 hp
TransmissionHydrostatic
Deck TypeFabricated
Blade Tip Speed18, 500 fpm
Displacement1123 cc
Cutting Width60 inches

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