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Walker D21d User Manual

Walker D21d
96 pages
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Please Read and Save These Instructions
For Safety, Read All Safety and Operation
Instructions Prior to Operating Machine
Beginning S/N: 154575
P/N 7000-16
Operator’s Manual
Safety, Assembly, Operating, and Maintenance Instructions

Table of Contents

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Walker D21d Specifications

General IconGeneral
Horsepower21 hp
Drive SystemHydrostatic
EngineKohler
Cutting Width52 inches
Cutting Height4.5 inches
Wheel Size13 x 6.5 inches (front)

Summary

Operator's Manual

Engine and Electrical System Specifications

Safety Instructions - Before Operating

General Pre-Operation Safety Rules

Covers reading the manual, clearing the area, keeping bystanders away, and wearing proper footwear.

Personal Safety and Machine Operation Rules

Safety Instructions - Operating

Safe Operating Practices and Hazards

Covers operating in daylight, sitting position, steering, interlocks, ventilation, and slope operation.

Operating Safety Procedures and Hazards

Safety Instructions - Maintenance

Preventing Accidental Starting During Maintenance

Covers key removal, electrical disconnection, and general safety during maintenance procedures.

Assembly Instructions

Battery Service and Safety

Details battery service, installation, and crucial safety precautions to prevent hazards.

Battery Activation, Charging, and Installation

Mower Deck Installation: Tilt-Up Rollers and Tractor Connection

PTO Shaft Connection and Counterweight Springs

Deck Leveling Procedure

Preoperating Checklist

Fuel System and Engine Oil Checks

Covers filling the fuel tank, checking engine oil, and inspecting the air cleaner system.

Cooling System and Belt Checks

Covers checking the cooling system, electric fan, and inspecting all drive belts.

Operating Instructions

Operator Controls Overview

Introduces operator controls and their importance for safe and efficient mower operation.

Forward Speed Control, Steering, and Parking Brake

Instrument Panel Overview

Hourmeter, Voltmeter, and Warning Systems

Starting the Engine

Pre-Start Safety Checks and Cold Weather Starting

Covers reading instructions, safety interlocks, and cold weather starting procedures.

Engine Starting Procedure and Troubleshooting

Details throttle, glow plug, and ignition sequence for starting and basic troubleshooting.

Adjusting Ground Speed and Steering

Basic Steering and Speed Control Operation

Explains how to maneuver the mower using steering levers and speed control.

Safety System Verification

Details checking the operator presence and safety interlock switches for proper function.

Recommendations for Mowing

Mowing Best Practices and Conditions

Provides advice on mowing conditions, blade sharpness, and patterns for optimal results.

Mowing Best Practices and Side Discharge Tips

Covers mowing conditions, blade sharpness, and side discharge deflector usage.

Engaging the Blade Drive

Blade Clutch Engagement Procedure and Safety

Details how to engage the blade clutch at appropriate speeds and safety switch functions.

Stopping the Machine

Normal Machine Shutdown and Safety Checks

Steps for stopping the engine, engaging the parking brake, and checking safety systems.

Adjusting Cutting Height

Slope Operation and No Driving Zones

Grass Handling System (GHS) Overview

Clogging Checklist

Clogging Prevention and Full Signal Horn

Full Signal Horn Operation and Adjustment

Explains the GHS full signal horn operation and how to adjust its sensitivity.

Maintenance Schedule Chart

Daily and 25-Hour Service Intervals

Lists maintenance tasks required daily and every 25 operating hours for the mower.

100-Hour and Yearly Service Intervals

Lists maintenance tasks required every 100 hours and yearly for optimal performance.

Important Tips for Kubota Engine Care

Fuel System and Starting/Stopping Tips

Covers fuel system care and engine starting/stopping best practices for longevity.

Cooling System and Air Cleaner Maintenance

Details cooling system requirements and air cleaner system care for engine health.

Lubrication - Engine Oil

Checking Engine Crankcase Oil Level

Explains how to check the engine oil level before use and during operation.

Changing Engine Oil and Filter

Details the procedure for changing engine oil and the oil filter at recommended intervals.

Grease Fitting and Oil Point Lubrication

Mower Deck Gearbox Lubrication

Gearbox, Dolly Wheel, and U-Joint Lubrication

Hydrostatic Transmission Fluid

Cleaning Engine Air Cleaner System

Donaldson Radialseal Air Cleaner Maintenance

Cleaning Engine Cooling System

Cleaning Mower Deck and GHS Blower

Checking/Servicing - Belts and Filters

Battery Electrolyte Level and Terminal Cleaning

Details checking battery electrolyte levels and cleaning corroded terminals.

Checking/Servicing - Battery, Tires, and Blades

Battery Charging and Tire Pressure

Covers charging the battery and checking tire pressure for proper operation.

Mower Blade Wear and Damage Inspection

Checking/Servicing - Drive Belts

Checking/Servicing - Controls and Safety Systems

Forward Speed Control Friction Lock Adjustment

Adjustments - Transmission Control

Steering Lever and FSC Travel Limit Adjustments

Maximum Forward Speed and Neutral Function Adjustments

Straight Ground Travel Adjustment

Adjustments - Blade Clutch (PTO)

Steering Handle and Tilt-Up Deck Stop Adjustments

GHS Full Signal Horn Adjustment

Replacing/Repairing Drive Belts

Engine PTO Drive Belt Replacement

Jackshaft Drive Belt Replacement

GHS Blower Drive Belt Replacement

Hydrostatic Ground Drive Belt Replacement

Engine Alternator Belt Replacement

Replacing Fuel Filters and Blade Shear Bolts

Replacing Mower Blades

Blade Straightness and Crack Inspection

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