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Craftsman 917.378770 User Manual

Craftsman 917.378770
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Owner's Manual
ICRRFTSMRN'I
ROTARY LAWN MOWER
7.0 Horsepower
Power-propelled
21" Rear discharge
Model No.
917.378770
CAUTION:
Read and follow all
Safety Rules and Instructions
beforeoperatingthisequipment
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
Visit our Craftsman website:www.sears.com/craftsman
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Craftsman 917.378770 Specifications

General IconGeneral
Engine Power6.75 ft-lbs Gross Torque
Engine Displacement190cc
Cutting Width22 inches
Fuel Tank Capacity1.6 quarts
Engine TypeBriggs & Stratton
Cutting Height1.25 to 3.75 inches
Warranty2 years
Drive TypeSelf-Propelled (Rear Wheel Drive)

Summary

WARRANTY AND SAFETY

Limited Two Year Warranty

Describes warranty terms and coverage for the mower.

General Safety Warnings

Highlights critical safety warnings and cautions for operation.

Specific Hazard Alerts

Details warnings about engine exhaust, battery components, and hot engine parts.

GENERAL OPERATION AND SAFETY

Safe Operating Practices

Covers safe use, clearances, footwear, and general handling.

Slope Operation Safety

Advises mowing across slopes and avoiding obstacles or steep inclines.

Protecting Children During Mowing

Emphasizes operator alertness and keeping children away.

Fuel Handling Safety

Provides safety advice for handling gasoline and fuel storage.

ACCESSORIES AND MAINTENANCE PARTS

Performance Accessories

Lists optional performance-enhancing attachments for the mower.

Maintenance Parts List

Lists common maintenance parts and consumables for the mower.

ASSEMBLY AND PRE-OPERATION

Unpacking and Setup

Instructions for removing the mower from its carton and unfolding the handle.

Installing Attachments

Information on attaching accessories like grass catchers or mulchers.

OPERATION OVERVIEW

Mower Controls Identification

Familiarizes users with the location of controls and parts on the mower.

Control Functions Explained

Explains the purpose of key controls like the operator presence bar and throttle.

USING YOUR LAWN MOWER

Engine Speed and Drive Control

How to adjust engine speed and operate the self-propelled drive.

Adjusting Cutting Height

Provides instructions on how to set the mower's cutting height.

PRE-START PROCEDURES

Converting Mower Function

Instructions for switching between mulching and bagging modes.

Adding Oil and Fuel

Guides on correctly adding engine oil and gasoline before operation.

STARTING AND MOWING PROCEDURES

Engine Starting and Stopping

Step-by-step guide for starting and safely shutting off the engine.

General Mowing Advice

Advice on cutting tall grass, bagging, and mower maintenance.

Mulching Mowing Best Practices

Specific advice for achieving optimal mulching results.

MAINTENANCE SCHEDULE AND LUBRICATION

Maintenance Task Schedule

Outlines maintenance tasks based on usage hours or time.

Lubrication Chart and Guidelines

Details where and how to lubricate mower components.

PRODUCT SPECIFICATIONS AND BLADE CARE

Mower Specifications

Lists key specs like capacity, oil type, and spark plug gap.

Blade Maintenance

Instructions for removing, replacing, and sharpening the mower blade.

COMPONENT MAINTENANCE

Grass Catcher and Drive Wheels

Instructions for maintaining the grass catcher and drive wheels.

Engine Oil and Lubrication

Details on oil type, viscosity, and changing engine oil.

MAINTENANCE: AIR FILTER, SPARK PLUG, CLEANING & ADJUSTMENTS

Air Filter and Spark Plug Service

How to service the air filter and replace the spark plug.

Mower Cleaning Procedures

Instructions for cleaning the mower housing, underside, and deflector.

Cutting Height Adjustment

How to adjust the mower's cutting height.

DRIVE BELT, HANDLE ADJUSTMENT, AND GRASS CATCHER

Drive Belt Service

Instructions for removing and replacing the mower's drive belt.

Handle Adjustment

How to adjust the handle position for comfort and storage.

Grass Catcher Assembly

Step-by-step guide to put together the grass catcher bag.

ENGINE SETTINGS AND STORAGE PREPARATION

Engine Speed and Carburetor Notes

Information on factory-set engine speed and carburetor.

Preparing Mower for Storage

Steps for cleaning, lubricating, and securing the mower for storage.

STORAGE FUEL SYSTEM AND TROUBLESHOOTING

Fuel System Preparation for Storage

Advises on draining fuel or using stabilizer for long-term storage.

Engine Oil and Cylinder Prep

Instructions for draining oil and preparing the cylinder for storage.

TROUBLESHOOTING ENGINE START ISSUES

Engine Won't Start Causes and Fixes

Lists common causes and corrections for an engine that won't start.

CONTINUED TROUBLESHOOTING

Power Loss and Cut Quality Issues

Addresses issues like power loss, uneven cutting, and vibration.

Starting, Drive, and Handling Problems

Covers troubleshooting for hard starting, loss of drive, and pushing difficulty.

SERVICE NOTES

General Service Remarks

Placeholder for service-related notes or comments.

REPAIR PARTS - GEAR CASE

Gear Case Assembly Parts List

Identifies components and part numbers for the gear case assembly.

REPAIR PARTS - MOWER ASSEMBLY

Main Mower Component Parts

Lists part numbers for various mower components.

Optional Accessories List

Lists accessories not included with the mower.

REPAIR PARTS - DRIVETRAIN AND CHASSIS

Drivetrain and Wheel Component Parts

Lists part numbers for drive cover, gear case, and wheels.

REPAIR PARTS - ENGINE INTERNALS

Engine Internal Component List

Lists part numbers for engine internals like pistons and crankshaft.

REPAIR PARTS - ENGINE EXTERNAL AND SETTINGS

Engine External Component List

Lists part numbers for external engine components like starter and carburetor.

Engine RPM Settings

Specifies recommended engine speed ranges for low and high settings.

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