Craftsman 247.39767 Series

Questions and Answers

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Laura GrayAug 15, 2025
Why Craftsman Lawn Mower engine fails to start?
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  msullivanAug 15, 2025
  The Craftsman Lawn Mower engine may fail to start due to several reasons: - The blade control might be disengaged, so ensure it is engaged. - The spark plug boot could be disconnected; check and connect it. - The fuel tank may be empty or contain stale fuel; refill with fresh gasoline. - The engine may not be primed; prime it as instructed in the Operation section. - The spark plug might be faulty; clean, adjust the gap, or replace it. - The engine could be flooded; wait a few minutes before restarting.
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daniel24Aug 18, 2025
What to do if Craftsman 247.39767 engine fails to start with electric starter?
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  Kenneth McclureAug 18, 2025
  If your Craftsman Lawn Mower engine fails to start with the electric starter, consider the following: - Ensure the Electric Starter Push Key is fully inserted into the starter housing until it snaps into place. - The battery may not be charged. Charge the battery. - The circuit breaker might have tripped. Stop the engine, remove the Electric Starter Push Key, and disconnect the spark plug boot. Check for and carefully remove any debris obstructing the blade. Reattach the spark plug boot and reinsert the Electric Starter Push Key. Wait one minute for the circuit breaker to automatically reset, then try starting again.
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Leslie HamiltonAug 21, 2025
What to do if Craftsman Lawn Mower engine runs erratic?
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  Joseph SparksAug 21, 2025
  If your Craftsman Lawn Mower engine runs erratically, it could be due to: - A loose spark plug boot. Connect and tighten the spark plug boot. - Stale fuel. Replace the fuel 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 due to lack of fuel, then refill with fresh fuel. - A dirty air cleaner. Refer to the Air Cleaner Maintenance section in the Engine Manual.
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charles43Aug 25, 2025
Why Craftsman Lawn Mower has uneven cut?
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  William SpencerAug 26, 2025
  An uneven cut with your Craftsman Lawn Mower can result from: - Wheels not positioned correctly. Adjust the cutting height lever on the right front and right rear wheel to the same position. - A dull blade. Sharpen or replace the blade.
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Kathryn NelsonAug 27, 2025
What to do if Craftsman 247.39767 Lawn Mower idles poorly?
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  Rachael SchwartzAug 28, 2025
  If your Craftsman Lawn Mower idles poorly, it might be because: - The spark plug is fouled, faulty, or the gap is too wide. Reset the gap or replace the spark plug. - The air cleaner is dirty. Refer to the Air Cleaner Maintenance section in the Engine Manual.
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Courtney WheelerAug 30, 2025
Why Craftsman 247.39767 will not self propel?
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  Kayla LambAug 30, 2025
  Your Craftsman Lawn Mower might not self-propel due to: - The belt not installed properly. Check the belt for proper pulley installation and movement. - Debris clogging the drive operation. Stop the engine, disconnect the spark plug boot, and clean out any debris. - A damaged or worn belt. Inspect the belt.
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Tyler WilliamsSep 2, 2025
Why Craftsman Lawn Mower engine overheats?
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  Tara RitterSep 3, 2025
  The Craftsman Lawn Mower engine may overheat if: - The engine oil level is low. Fill the crankcase with the proper oil. - The airflow is restricted. Clean the area around and on top of the engine.
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Susan RomeroSep 5, 2025
Why Craftsman Lawn Mower will not mulch grass?
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  Gabriel ByrdSep 5, 2025
  Your Craftsman Lawn Mower might not mulch grass effectively due to: - Wet grass. Avoid mowing when the grass is wet; wait until it's dry. - Excessively high grass. Mow once at a high cutting height, then mow again at the desired height or make a narrower cutting path. - A dull blade. Sharpen or replace the blade.
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sonyabrooksSep 8, 2025
Why Craftsman 247.39767 has excessive vibration?
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  cole78Sep 8, 2025
  Excessive vibration in your Craftsman Lawn Mower could be due to: - A loose or unbalanced cutting blade. Tighten the blade and adapter, and balance the blade. - A bent cutting blade. Replace the blade.
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lforbesSep 12, 2025
Why Craftsman 247.39767 Lawn Mower occasionally skips?
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  Matthew MunozSep 12, 2025
  Occasional skipping or hesitation in your Craftsman Lawn Mower may be due to: - The spark plug gap being too close. Adjust the gap, referring to the Spark Plug Maintenance section in the Engine Manual.

Summary

Safety Instructions

General Operation Safety

Read and follow all safety rules and operating instructions for safe use.

California Proposition 65 Warning

Warning regarding chemicals in engine exhaust that may cause cancer or birth defects.

Operator Responsibility

Restrict use to trained persons who understand warnings and instructions.

Slope Operation Safety

Use caution on slopes, avoid steep ones, and operate across them.

Children Safety Precautions

Keep children away from mower and never allow unsupervised operation.

Safe Handling of Gasoline

Precautions for handling flammable gasoline safely.

General Service Safety

Disconnect spark plug wire and ground it before performing any maintenance.

Do Not Modify Engine

Avoid modifying the engine to prevent unsafe speeds and potential accidents.

Spark Arrestor Notice

Information regarding the spark arrestor requirement for certain lands.

Safety Symbols Explained

Explains various safety symbols and their meanings for proper operation.

Using the Slope Gauge

Guide to determine if a slope is too steep for safe operation.

Assembly

Unpacking Instructions

Steps for opening the carton and removing loose parts and the mower.

Attaching the Handle

How to assemble and attach the mower handle securely.

Completing Handle Assembly

Final steps to secure the mower handle in place.

Rope Guide and Cable Ties

Attaching the rope guide and securing control cables.

Attaching the Grass Catcher

Steps to assemble and attach the grass catcher to the mower.

Attaching Side Discharge Cover

Instructions for fitting the side discharge cover.

Adjustments

Cutting Height Adjustment

How to adjust the cutting height of the mower.

Drive Control Adjustment

Adjusting the drive control for belt tension.

Handle Pitch Adjustment

Adjusting the handle position for operator comfort.

Operation

Control Identification

Identifies key controls like Blade Control, Drive Control, etc.

Blade Control Operation

How to operate the blade control to start and stop the engine and blade.

Drive Control Operation

Engaging and disengaging the mower's drive system.

Cutting Height Adjustment Lever

Adjusting the cutting height for desired grass length.

Side Discharge Cover Usage

Using the side discharge cover for grass dispersal.

Recoil Starter Operation

How to start the engine using the recoil starter.

Gas and Oil Fill-Up

Filling the engine with gas and oil before starting.

Engine Starting Procedure

Step-by-step guide to start the mower engine safely.

Mulching Operation

How to configure and use the mower for mulching.

Grass Catcher Operation

Instructions for using the grass catcher to collect clippings.

Service and Maintenance

Maintenance Schedule

Chart detailing service intervals and tasks for the mower.

Lubrication Points

Guidance on lubricating moving parts for smooth operation.

Blade Control Lubrication

Lubricating the blade control for free movement.

Engine Cleaning and Maintenance

How to clean and maintain the engine.

Mower Deck Cleaning

Procedures for cleaning the underside of the mower deck.

Deck Wash System Usage

Using the deck wash port for cleaning.

Blade Service and Balancing

Inspect, balance, and replace the cutting blade.

Belt Care

Information on servicing the self-propulsion drive belt.

Charging Electric Starter Battery

Instructions for charging the electric starter battery.

Replacing Electric Starter Battery

Steps for safely replacing the electric starter battery.

Off-Season Storage

Preparing the Engine for Storage

Steps to prepare the engine for long-term storage.

Preparing the Lawn Mower for Storage

Cleaning and lubricating the mower for storage.

Battery Storage

Best practices for storing the battery during off-season.

Troubleshooting

Engine Fails to Start

Common causes and remedies for engine starting issues.

Engine Fails to Start with Electric Starter

Troubleshooting electric start issues.

Engine Runs Erratic

Diagnosing and fixing engine running problems.

Engine Overheats

Solutions for engine overheating issues.

Engine Idles Poorly

Troubleshooting an engine that idles poorly.

Excessive Vibration

Causes and solutions for excessive mower vibration.

Mower Will Not Mulch Grass

Reasons and fixes for mulching failures.

Uneven Cut

How to correct an uneven grass cutting pattern.

Mower Will Not Self Propel

Troubleshooting issues with the self-propel function.

Craftsman 247.39767 Series Specifications

General

Engine	Briggs & Stratton
Drive Type	Self-Propelled
Weight	78 lbs
Deck Material	Steel
Mulching Capability	Yes
Bagging Capability	Yes
Side Discharge Capability	Yes
Engine Type	Gas
Cutting Width	21 inches
Start Type	Recoil
Drive System	Rear Wheel Drive
Fuel Capacity	0.5 gallons
Discharge Options	Side, Mulch
Cutting Height	1.25 - 3.75 inch
Wheel Size	8 inch (front), 11 inch (rear)
Fuel Tank Capacity	0.5 gallons