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Craftsman 247.377000 - User Manual

Craftsman 247.377000
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Sears Brands Management Corporation, Hoffman Estates, IL 60179, U.S.A.
Visit our website: www.craftsman.com
CAUTION: Before using this product,
read this manual and follow all safety
rules and operating instructions.
Operator’s Manual
• SAFETY
• ASSEMBLY
• OPERATION
• MAINTENANCE
• ESPAÑOL
21” LAWN MOWER
Model No. 247.377000
Form No. 769-09471B
(August 25, 2015)

Table of Contents

Questions and Answers

  • H
    Hannah WuAug 14, 2025
    Why won't my Craftsman Lawn Mower engine start?
    • J
      john72Aug 14, 2025
      There are several reasons why your Craftsman Lawn Mower engine might fail to start: * The blade control may be disengaged. Ensure it is engaged. * The spark plug boot might be disconnected. Connect the wire to the spark plug boot. * The fuel tank could be empty or contain stale fuel. Refill with clean, fresh gasoline. * The engine may not be primed (if equipped with a primer). Prime the engine as instructed. * The spark plug might be faulty. Clean, adjust the gap, or replace it. * The engine could be flooded. Wait a few minutes before attempting to restart. * The fuel line may be blocked. Contact your Sears Parts & Repair Center to have the fuel line cleaned.
  • M
    maynardrobertAug 17, 2025
    What to do if Craftsman 247.377000 has an uneven cut?
    • D
      Dennis CoxAug 17, 2025
      If your Craftsman Lawn Mower is producing an uneven cut: * Ensure the wheels are positioned correctly. Adjust the cutting height lever on the right front and right rear wheels to the same position. * Check for a dull blade. Sharpen or replace the blade.
  • A
    Anna WilsonAug 20, 2025
    Why does my Craftsman 247.377000 engine run erratic?
    • L
      Lori EricksonAug 21, 2025
      Your Craftsman Lawn Mower engine might run erratically due to: * A loose spark plug boot. Connect and tighten the spark plug boot. * Stale fuel. Replace it with clean, fresh gasoline. * A plugged vent in the gas cap. Clear the vent. * Water or dirt in the fuel system. Run the engine until it stops from lack of fuel, then refill with fresh fuel. * A dirty air cleaner. Refer to the Air Cleaner Maintenance in the Engine Manual. * A blocked fuel line. Contact your Sears Parts & Repair Center to have the fuel line cleaned.
  • J
    Jennifer PerezAug 25, 2025
    Why is my Craftsman 247.377000 Lawn Mower engine overheating?
    • L
      Logan GonzalezAug 25, 2025
      Your Craftsman Lawn Mower engine may be overheating because: * The engine oil level is low. Fill the crankcase with the proper oil. * Air flow is restricted. Clean the area around and on top of the engine.
  • E
    Eric WareAug 27, 2025
    What to do if my Craftsman Lawn Mower will not self propel?
    • S
      Susan SnyderAug 27, 2025
      If your Craftsman Lawn Mower is not self-propelling: * Check if the belt is not installed properly. Check the belt for proper pulley installation and movement. * Debris might be clogging the drive operation. Stop the engine, disconnect the spark plug boot, and clean out any debris. * The belt may be damaged or worn. Inspect the belt and, if necessary, see your Sears Parts & Repair Center to have the belt replaced.
  • M
    Mrs. Lisa Hancock MDAug 30, 2025
    Why does my Craftsman 247.377000 Lawn Mower idle poorly?
    • A
      Austin EscobarAug 30, 2025
      Your Craftsman Lawn Mower might idle poorly due to: * A spark plug that is fouled, faulty, or has a gap that is too wide. Reset the gap or replace the spark plug. * A dirty air cleaner. Refer to Air Cleaner Maintenance in the Engine Manual.
  • A
    Anna PatelSep 3, 2025
    What to do if my Craftsman 247.377000 Lawn Mower is not mulching grass?
    • B
      Bryan LewisSep 3, 2025
      If your Craftsman Lawn Mower isn't mulching grass effectively: * Avoid mowing when the grass is wet; wait until it's dry. * If the grass is excessively high, mow once at a high cutting height, then mow again at your desired height, or make a narrower cutting path. * Check for a dull blade. Sharpen or replace it.
  • R
    Robert SotoSep 6, 2025
    Why does my Craftsman 247.377000 have excessive vibration?
    • S
      Shannon RobinsonSep 6, 2025
      Excessive vibration in your Craftsman Lawn Mower can be caused by: * A loose or unbalanced cutting blade. Tighten the blade and adapter, and balance the blade. * A bent cutting blade. Replace the blade.
  • N
    Nathan ParksSep 10, 2025
    Why Craftsman 247.377000 Lawn Mower occasionally skips (hesitates)?
    • M
      Marie WebbSep 10, 2025
      Your Craftsman Lawn Mower might occasionally skip or hesitate if the spark plug gap is too close. Adjust the gap, referring to the Spark Plug Maintenance section in the Engine Manual.

Summary

Warranty Statement

Safety Instructions

California Proposition 65 Safety

Warning regarding chemicals known to cause cancer and birth defects from engine exhaust.

General Operation Safety

Key safety precautions for operating the lawn mower, including general use and handling.

Slope Operation Safety

Guidelines for safe operation on sloped terrain to prevent loss of control and accidents.

Children Safety Precautions

Instructions to ensure children are kept away from the mower during operation and maintenance.

Slope Gauge

Assembly

Handle Assembly

Steps for attaching the mower handle to the main unit for operation.

Grass Catcher Attachment

Instructions for connecting the grass catcher bag to the mower frame.

Side Discharge Cover Installation

Procedure for installing the side discharge cover for alternative grass clipping management.

Cutting Height and Handle Pitch Adjustment

Adjusting the mower's cutting height and handle angle for operation and comfort.

Operation

Engine Starting and Stopping

Procedures for safely starting and stopping the lawn mower engine.

Blade and Drive Controls

Understanding and using the primary controls for blade and propulsion engagement.

Mulching and Grass Bagging

How to use the mower for mulching grass or collecting clippings in a bag.

Operational Safety Features

Key safety components like the trail shield and blade control during operation.

Service and Maintenance

Maintenance Schedule

Recommended service intervals and tasks for the lawn mower.

Lubrication Points

Identifying and lubricating key pivot points for smooth operation.

Engine and Mower Cleaning

Procedures for cleaning the engine and the mower deck.

Blade Maintenance and Balancing

Instructions for inspecting, sharpening, and balancing the cutting blade.

Drive Belt Care

Information on inspecting and servicing the mower's drive belt.

Off-Season Storage

Engine Preparation for Storage

Steps to prepare the engine for long-term storage to prevent fuel system issues.

Mower Preparation for Storage

Cleaning and greasing the mower components for protection during storage.

Troubleshooting

Engine Performance Issues

Diagnosing and resolving common engine starting and running problems.

Operational Problems

Addressing issues related to mulching, cutting quality, and self-propulsion.

Vibration and Cutting Issues

Identifying causes and solutions for excessive mower vibration and uneven cuts.

Craftsman 247.377000 Specifications

General IconGeneral
Engine Type4-Cycle
Engine Displacement140cc
Cutting Width21 inches
Cutting Height Positions6
Drive TypeSelf-Propelled
Speed SettingsVariable
Warranty2 Year Limited
EngineBriggs & Stratton
Cutting Height AdjustmentDual Lever
Fuel Capacity1.0 quart
Fuel Tank Capacity1.0 quart
Discharge OptionsMulch

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