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Craftsman 247.37034 - User Manual

Craftsman 247.37034
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Operator's Manual
CRRFTSMRH
21" LAWN MOWER
Model No. 247.37034
CAUTION: Before using
this product, read this
manual and follow all
safety rules and operating
instructions.
o SAFETY
ASSEMBLY
OPERATION
MAINTENANCE
PARTS LIST
o ESPANOL, p. 33
Sears Brands Management Corporation, Hoffman Estates, IL 60179, U.S.A.
Visit our website: www.craftsman.com FORMNO.769-07576A
12/6/2011

Table of Contents

Questions and Answers

  • G
    Gabriella StarkAug 13, 2025
    Why won't my Craftsman 247.37034 Lawn Mower start?
    • S
      Shannon Williams MDAug 13, 2025
      Your Craftsman Lawn Mower might not start due to several reasons. It could be that the blade control is disengaged, so ensure it is engaged. Another possibility is a disconnected spark plug boot; check and connect the wire to the spark boot. An empty or stale fuel tank can also prevent starting, so fill the tank with clean, fresh gasoline. A faulty spark plug may be the culprit, in which case you should clean, adjust the gap, or replace it. If the engine is flooded, wait a few minutes before attempting to restart. Finally, a blocked fuel line can cause this issue; contact your Sears Parts & Repair Center to have the fuel line cleaned.
  • G
    Gina JohnsonAug 17, 2025
    What to do if my Craftsman 247.37034 engine runs erratically?
    • E
      Emma JohnsonAug 17, 2025
      If your Craftsman Lawn Mower engine runs erratically, there are a few things to check. First, make sure the spark plug boot is securely connected and tightened. Stale fuel can also cause this issue, so fill the tank with clean, fresh gasoline. A plugged vent in the gas cap could be the problem; clear the vent. If there's water or dirt in the fuel system, run the engine until it stops from lack of fuel, then refill with fresh fuel. For a dirty air cleaner, refer to the Air Cleaner section in the Engine Maintenance guide. Finally, a blocked fuel line can cause this; contact your Sears Parts & Repair Center to have the fuel line cleaned.
  • W
    williamsdianeAug 20, 2025
    Why is my Craftsman 247.37034 engine overheating?
    • K
      Kevin GarciaAug 20, 2025
      Your Craftsman Lawn Mower engine might be overheating because the engine oil level is low. Fill the crankcase with the proper oil. Another cause could be restricted airflow. Clean the area around and on top of the engine to ensure proper ventilation.
  • S
    Sabrina DuncanAug 25, 2025
    How to fix an uneven cut with my Craftsman 247.37034 Lawn Mower?
    • D
      David DunnAug 25, 2025
      If your Craftsman Lawn Mower is producing an uneven cut, it might be due to incorrectly positioned wheels. Adjust the cutting height lever on the right front and right rear wheels to the same position. Also, a dull blade can cause an uneven cut, so sharpen or replace the blade.
  • E
    Eileen SandovalAug 28, 2025
    How to fix a Craftsman Lawn Mower that idles poorly?
    • J
      Jeanne PetersAug 28, 2025
      A Craftsman Lawn Mower that idles poorly can be due to a few reasons. The spark plug might be fouled, faulty, or have a gap that is too wide. Reset the gap to .030” or replace the spark plug. Also, a dirty air cleaner can cause poor idling. Refer to the Air Cleaner section in the Engine Maintenance guide.
  • J
    Jennifer PriceAug 31, 2025
    What to do if my Craftsman 247.37034 will not mulch grass?
    • M
      Megan AtkinsonSep 1, 2025
      If your Craftsman Lawn Mower isn't mulching grass effectively, it could be due to a few reasons. Wet grass can prevent proper mulching, so avoid mowing when the grass is wet and wait until it's drier. Excessively high grass can also be a factor; mow once at a high cutting height, then mow again at the desired height, or make a narrower cutting path. A dull blade will hinder mulching, so sharpen or replace the blade.
  • C
    Christopher JohnsonSep 4, 2025
    Why does my Craftsman 247.37034 have excessive vibration?
    • S
      Sarah PerrySep 4, 2025
      Excessive vibration in your Craftsman Lawn Mower can stem from a couple of issues. The cutting blade might be loose or unbalanced. Tighten the blade and adapter, and balance the blade. Alternatively, the cutting blade could be bent, in which case you should replace the blade.
  • H
    hudsonrodneySep 8, 2025
    Why does my Craftsman Lawn Mower occasionally skip or hesitate?
    • N
      ncoleSep 8, 2025
      If your Craftsman Lawn Mower occasionally skips or hesitates, it might be because the spark plug gap is too close. Adjust the gap to .030”.

Summary

Safety Instructions

General Operation

Read and understand all instructions before operating the machine.

Safety Hazards

Important safety alerts regarding hazards like rotating blades and thrown debris.

Slope and Child Safety

Safety precautions for operating on slopes and around children.

Gasoline Handling Safety

Safe procedures for handling gasoline, including refueling and storage.

Engine and Spark Arrestor Safety

Safety precautions for engine maintenance and spark arrestor requirements.

Safety Symbols

Explanation of safety symbols used in the manual.

Assembly

Carton Handling

Instructions for opening and removing the mower from its packaging.

Handle Assembly

Step-by-step guide to assembling the mower handle.

Grass Catcher Attachment

Instructions for attaching the grass catcher to the mower.

Side Discharge Cover

How to attach the side discharge cover for grass clipping dispersal.

Cutting Height & Handle Adjustments

Procedures for adjusting cutting height and handle pitch.

Operation

Mower Components

Overview of key operational components like blade control, height adjustment, and recoil starter.

Deck Cleaning

Instructions for using the deck wash system to clean the mower deck.

Discharge Options

Information on mulch cover and side discharge cover use.

Fuel and Oil Fill-Up

Detailed instructions for filling the engine with gasoline and oil.

Starting and Stopping

Step-by-step guide to starting and stopping the mower engine.

Operating Modes

How to operate the mower in mulching mode or with a grass catcher.

Service and Maintenance

Maintenance Schedule

A schedule of recommended maintenance tasks and intervals.

General Service Guidelines

General advice for performing maintenance safely and effectively.

Engine Maintenance

Procedures for maintaining the engine, including spark plug and air cleaner.

Oil Checks and Changes

How to check and change the engine oil.

Engine Cleaning and Lubrication

Instructions for cleaning the engine and lubricating moving parts.

Deck Cleaning

How to use the deck wash system to clean the mower deck.

Blade Care

Procedures for inspecting, sharpening, and replacing the mower blade.

Off-Season Storage

Engine Preparation for Storage

Steps to prepare the engine for long-term storage.

Mower Preparation for Storage

Instructions for cleaning and preparing the mower for storage.

Troubleshooting

Starting Problems

Common causes and remedies for an engine that won't start or runs erratically.

Engine Performance Issues

Troubleshooting for overheating, hesitation, poor idling, and vibration.

Cutting Quality Issues

How to resolve problems with mulching and uneven grass cutting.

Parts List

Labels

Emission Control System Warranty Statement

California & US Emission Warranty

Details of the warranty for emission control parts in California and the US.

Owner Warranty Responsibilities

Owner's duties regarding maintenance and warranty claims.

Warranty Provisions

Specific terms and conditions of the emission control warranty.

Repair Protection Agreement

Craftsman 247.37034 Specifications

General IconGeneral
Engine Displacement140cc
Cutting Width21 inches
Starter TypeRecoil
Deck MaterialSteel
Weight65 lbs
Drive SystemFront Wheel Drive
Cutting Height Positions6
Speed SettingsVariable
Mulching CapabilityYes
Bagging CapabilityYes
Side Discharge CapabilityYes
Wheel Size7 inches front, 8 inches rear
Fuel Capacity0.95 gallons
Cutting Height1.25 to 3.75 inches
Fuel Tank Capacity0.95 gallons
EngineBriggs & Stratton

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