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Cub Cadet PR-521 User Manual

Cub Cadet PR-521
20 pages
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21” Rear & Side
Discharge Mulching
Mower
Model PR-521
PRINTED IN U.S.A.
Operator’s Manual
FORM NO.
770-10088B.fm
(10/2000)
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
CUB CADET CORP. P.O. BOX 368023 CLEVELAND, OHIO 44136-9722
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 368023 Cleveland, Ohio 44136-9722.
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Cub Cadet PR-521 Specifications

General IconGeneral
Drive SystemSelf-Propelled
Cutting Width21 in
Cutting Height1.25 - 3.75 in
Deck MaterialSteel
Mulch CapableYes
Side DischargeYes
Rear BagYes
Engine159cc Cub Cadet OHV
Fuel Capacity0.5 gallons
Warranty3-Year Limited

Summary

Model and Serial Number Identification

Locating Model and Serial Numbers

Instructions for finding the mower's model and serial number on the equipment.

Customer Support Contact

Details on how to contact customer support for assistance with assembly or operation.

Key Safety Operation Practices

General Operation Safety

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

Child Safety

Specific precautions and rules regarding children's proximity and operation of the mower.

Slope Operation Safety

Guidelines and warnings for safely operating the mower on inclines and slopes.

Service and Fuel Safety

Precautions for safe gasoline handling and general maintenance safety procedures.

Operator Responsibility

Defines the user's duties and responsibilities for safe equipment use and maintenance.

Slope Gauge and Operation Guide

Using the Slope Gauge

Instructions on how to use the provided slope gauge to determine safe mowing areas.

Safe Slope Operation Rules

Rules for operating the mower on slopes, including direction and maximum angle.

Lawn Mower Assembly

Unpacking and Initial Setup

Steps for removing the mower from its carton and preparing it for assembly.

Handle and Control Assembly

Instructions for attaching the handle, connecting cables, and securing components.

Spark Plug Wire Safety

Procedure for disconnecting the spark plug wire for safety before assembly.

Grass Catcher Attachment

Steps for securely attaching the grass catcher assembly to the mower.

Grass Catcher Bag Assembly

Instructions for assembling the fabric grass bag to its frame.

Understanding Your Lawn Mower

Mower Configuration Options

Details on converting to side discharge and the use of mulching components.

Key Component Identification

Overview of major mower parts including the grass catcher, mulching plug, and controls.

Blade Control and Height Adjustment

Explanation of the blade control handle and cutting height adjustment levers.

Operating the Lawn Mower

Fueling and Pre-Operation Checks

Guidance on filling fuel and oil, and performing essential checks before starting.

Starting and Stopping Procedures

Step-by-step instructions for safely starting and stopping the mower engine and blade.

Mowing Techniques and Mulching

Best practices for mowing, including avoiding wet grass, cutting height, and mulching.

Mower Adjustments

Carburetor and Cutting Height Adjustments

Instructions for adjusting the carburetor and setting the cutting height for each wheel.

Handle Height Adjustment

Procedure for lowering the mower handle for user convenience.

Lawn Mower Maintenance

Blade and Deck Maintenance

Care instructions for the cutting blade, blade adapter, and mower deck.

Engine Maintenance

Guidance on engine maintenance, including referring to the engine manual.

Lubrication Procedures

Details on lubricating moving parts of the mower, including blade control and wheels.

Off-Season Storage Preparation

Steps for preparing the mower for off-season storage, including cleaning and lubrication.

Troubleshooting Lawn Mower Issues

Engine Starting and Running Issues

Common engine problems like failure to start or erratic running, with corrective actions.

Mower Performance Troubleshooting

Solutions for issues like excessive vibration, uneven cut, and mulching problems.

Parts List and Diagram

Parts Identification Diagram

Visual diagram identifying various parts of the mower with corresponding numbers.

Detailed Parts Reference List

Comprehensive list of part numbers and descriptions for the mower components.

Manufacturer's Limited Warranty

Warranty Coverage and Service

Details on the warranty period, what is covered, items not covered, and how to obtain service.

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