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Craftsman 247.378970 - User Manual

Craftsman 247.378970
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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
• UNPACKING P. 8
• ASSEMBLY
• OPERATION
• MAINTENANCE
• ESPAÑOL
21” LAWN MOWER
Model No. 247.378970
Form No. 769-10785
(December 10, 2015)

Table of Contents

Questions and Answers

  • A
    Adam HayesAug 8, 2025
    What to do if my Craftsman 247.378970 Lawn Mower engine fails to start?
    • Q
      qbellAug 8, 2025
      If your Craftsman Lawn Mower engine won't start, there are several possible reasons. First, make sure the blade control is engaged. Check that the spark plug boot is connected securely. Ensure the fuel tank isn't empty and that you're using fresh gasoline. If your mower has a primer, use it as instructed. The spark plug might be faulty, so clean, adjust the gap, or replace it. If the engine is flooded, wait a few minutes before trying to restart it. If the fuel line is blocked, contact a qualified service to have it cleaned.
  • K
    kathy32Aug 12, 2025
    Why does my Craftsman 247.378970 have an uneven cut?
    • J
      james84Aug 12, 2025
      An uneven cut with your Craftsman Lawn Mower is often caused by a dull blade; sharpen or replace it. Another cause could be that the wheels are not positioned correctly; adjust the cutting height lever on the left front and left rear wheel to the same position.
  • R
    Rebecca BarryAug 16, 2025
    What to do if Craftsman Lawn Mower will not self propel?
    • S
      Stephen CarrilloAug 16, 2025
      If your Craftsman Lawn Mower won't self-propel, first stop the engine, disconnect the spark plug boot, and clean out any debris clogging the drive operation. If that doesn't work, the belt may be damaged or worn, in which case you should have it replaced by a qualified service dealer. Finally, the drive control may be out of adjustment, so you should adjust it.
  • L
    lthompsonAug 20, 2025
    Why does my Craftsman 247.378970 Lawn Mower engine run erratically?
    • J
      Jeffery HillAug 20, 2025
      An erratic running engine in your Craftsman Lawn Mower could stem from a few issues. A loose spark plug boot could be the culprit; connect and tighten it. Old fuel can also cause problems, so refill the tank with fresh gasoline. The vent in the gas cap might be plugged, so clear it. Additionally, water or dirt in the fuel system can cause this, in that case run the engine until it stops from lack of fuel and refill with fresh fuel.
  • P
    perrycindyAug 25, 2025
    What causes a Craftsman 247.378970 to overheat?
    • C
      cynthia97Aug 26, 2025
      If your Craftsman Lawn Mower engine is overheating, check the oil level first and fill the crankcase with the proper oil if it's low. Also, ensure that there is no restriction of airflow; clean the area around and on top of the engine.
  • K
    Kevin MeltonAug 29, 2025
    Why does my Craftsman 247.378970 have excessive vibration?
    • K
      Kathleen MorganAug 29, 2025
      Excessive vibration in your Craftsman Lawn Mower can be due to a loose or unbalanced cutting blade; tighten the blade and adapter, and balance the blade. Alternatively, the cutting blade might be bent, in which case you should replace it.
  • A
    Amanda GregorySep 2, 2025
    Why does my Craftsman Lawn Mower idle poorly?
    • M
      Madison GutierrezSep 2, 2025
      A Craftsman Lawn Mower that idles poorly might have a spark plug that is fouled, faulty, or has a gap that is too wide; reset the gap or replace the spark plug.

Craftsman 247.378970 Specifications

General IconGeneral
BrandCraftsman
Model247.378970
CategoryLawn Mower
LanguageEnglish

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