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Craftsman 917.378420 User Manual

Craftsman 917.378420
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Owner's Manual
JCRHFTSMIIWJ
6.75 HORSEPOWER
21" REAR DISCHARGE
POWER PROPELLED
ROTARY LAWN MOWER
Model No.
917.378420
Safety
Assembly
Operation
Maintenance
EspaSol
Repair Parts
CAUTION:
Read and follow all
Safety Rules and Instructions
before operating this equipment
Sears, Roebuck and Co., Hoffman Estates, IL 60179
Visit our Craftsman website: www.sears.com/craftsman
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Craftsman 917.378420 Specifications

General IconGeneral
Model Number917.378420
CategoryLawn Mower
EngineBriggs & Stratton
Engine Type4-Cycle
Engine Power6.75 ft-lbs Gross Torque
Cutting Width21 inches
Speed SettingsVariable
Deck MaterialSteel
Warranty2-year limited
Drive SystemRear Wheel Drive
Fuel Capacity1.6 qt
Fuel Tank Capacity1.6 qt

Summary

Warranty Information

Safety Rules and Precautions

General Operation Safety

Instructions and precautions for operating the lawn mower safely.

Children Safety Precautions

Warnings and precautions related to children during operation.

Service Safety Precautions

Safety precautions for maintenance and repair of the lawn mower.

Assembly Instructions

Lawn Mower Operation

Drive Control System

Before Starting Engine Procedures

Add Engine Oil

Instructions for checking and adding engine oil before starting.

Add Gasoline

Instructions for adding gasoline to the fuel tank before starting.

Start Engine Procedure

Procedure for starting the lawn mower engine.

Stop Engine Procedure

Procedure for stopping the lawn mower engine.

Maintenance Schedule and Recommendations

Maintenance Schedule Overview

Outlines a schedule for regular maintenance tasks for the lawn mower.

General Maintenance Recommendations

Provides overall advice for maintaining the lawn mower and warranty.

Lubrication Procedures

Information and chart for lubricating mower components.

Product Specifications and Blade Care

Blade Care and Replacement

Guidance on removing, replacing, and sharpening the mower blade.

Engine Lubrication Details

Air Filter Maintenance

Mower Cleaning Procedures

Service and Adjustments

Engine Specifications and Controls

Storage and Winterization

Engine Fuel System Storage

Preparing the fuel system for storage to prevent gum deposits.

Engine Oil Before Storage

Instructions for draining and replacing engine oil before storage.

Cylinder Preparation for Storage

Procedure for adding oil to the cylinder before storage.

Troubleshooting Common Problems

Engine Does Not Start Troubleshooting

Identifies causes and corrections for the engine failing to start.

Loss of Power Troubleshooting

Addresses issues causing reduced engine power and performance.

Starter Rope Hard to Pull Troubleshooting

Troubleshooting steps for a stiff or difficult starter rope.

Loss of Drive Troubleshooting

Identifies causes and corrections for loss of drive or self-propulsion.

Gear Case Assembly Repair Parts

Mower Assembly Exploded View

Mower Assembly Parts List

Wheel and Deck Assembly Diagram

Wheel and Deck Assembly Parts List

Craftsman 4-Cycle Engine Overview

Craftsman 4-Cycle Engine Parts List

Engine Carburetor Parts

Engine Recoil Starter Parts

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