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Craftsman 247.37108 - User Manual

Craftsman 247.37108
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Operator's Manual
PRO E S S I 0 N A
21" SELF=PROPELLED MOWER
Model No. 247.37108
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. 37
Sears Brands Management Corporation, Hoffman Estates, IL 60179, U.S.A.
Visit our website: www.craftsman.com FORMNO.769-05501
1/5/2010

Table of Contents

Questions and Answers

  • J
    James JohnsonAug 15, 2025
    Why does my Craftsman 247.37108 engine fail to start?
    • J
      Jessica BondAug 15, 2025
      Your Craftsman Lawn Mower engine might fail to start due to several reasons: the blade control may be disengaged (engage it); the spark plug boot may be disconnected (connect it); the fuel tank may be empty or contain stale fuel (fill it with clean, fresh gasoline); the spark plug may be faulty (clean, adjust the gap, or replace it); the engine may be flooded (wait a few minutes before restarting). For a blocked fuel line, contact your Sears Parts & Repair Center to have it cleaned.
  • L
    Lisa LawsonAug 18, 2025
    What to do if Craftsman 247.37108 Lawn Mower engine overheats?
    • J
      Joseph HardyAug 18, 2025
      If your Craftsman Lawn Mower engine overheats, it could be due to a low engine oil level (fill the crankcase with the proper oil) or restricted airflow (clean the area around and on top of the engine).
  • J
    James WeaverAug 22, 2025
    Why Craftsman 247.37108 Lawn Mower will not mulch grass?
    • L
      lutzstephenAug 22, 2025
      If your Craftsman Lawn Mower won't mulch grass, it may be due to wet grass (do not mow when grass is wet; wait until later to cut), excessively high grass (mow once at a high cutting height, then mow again at desired height or make a narrower cutting path), or a dull blade (sharpen or replace the blade).
  • S
    Shannon JonesAug 25, 2025
    Why Craftsman Lawn Mower has an uneven cut?
    • C
      Charles JacobsAug 25, 2025
      An uneven cut with your Craftsman Lawn Mower is likely due to a dull blade. Sharpen or replace the blade.
  • N
    Nicole LambertAug 28, 2025
    What to do if Craftsman 247.37108 Lawn Mower idles poorly?
    • M
      Mary MayoAug 28, 2025
      If your Craftsman Lawn Mower idles poorly, it could be due to a spark plug that is fouled, faulty, or has a gap that is too wide (reset the gap to .020” or replace the spark plug). If the air cleaner is dirty, refer to the Air Cleaner section in the Engine Maintenance section.
  • J
    Jennifer MillerAug 31, 2025
    Why Craftsman 247.37108 Lawn Mower will not self propel?
    • J
      Jeffrey KimAug 31, 2025
      If your Craftsman Lawn Mower will not self propel, it might be because the belt is not installed properly (check the belt for proper pulley installation and movement) or debris is clogging the drive operation (stop the engine, disconnect the spark plug boot, and clean out the debris). For a damaged or worn belt, contact your Sears Service Center.
  • J
    Jennifer SotoSep 3, 2025
    Why does my Craftsman 247.37108 engine run erratically?
    • Q
      qmoodySep 3, 2025
      An erratic running engine in your Craftsman Lawn Mower can be caused by a loose spark plug boot (connect and tighten it), stale fuel (fill the tank with fresh gasoline), a plugged vent in the gas cap (clear the vent), or water/dirt in the fuel system (run the engine until it stops from lack of fuel, then refill with fresh fuel). For a blocked fuel line, contact your Sears Parts & Repair Center to have it cleaned. If the air cleaner is dirty, refer to the Air Cleaner section in the Engine Maintenance section.
  • D
    David DavidsonSep 7, 2025
    Why Craftsman Lawn Mower has excessive vibration?
    • B
      Bryan MillerSep 7, 2025
      Excessive vibration in your Craftsman Lawn Mower may be due to a loose or unbalanced cutting blade (tighten the blade and adapter, and balance the blade) or a bent cutting blade (replace the blade).
  • A
    Anna FullerSep 12, 2025
    Why Craftsman Lawn Mower occasionally skips (hesitates)?
    • M
      Melanie WhiteSep 12, 2025
      If your Craftsman Lawn Mower occasionally skips (hesitates), it is possible that the spark plug gap is too close. Adjust the gap to .020”.

Summary

WARRANTY INFORMATION

SAFETY INSTRUCTIONS

GENERAL OPERATION GUIDELINES

SLOPE OPERATION SAFETY

Precautions and guidelines for safe mowing on inclines and slopes.

CHILD SAFETY AND SUPERVISION

Instructions to ensure children's safety around the mower.

ASSEMBLY AND SETUP

OPERATING YOUR MOWER

MOWER CONTROLS AND STARTING

Explanation of blade control, recoil starter, and engine start procedures.

FUEL AND OIL MANAGEMENT

Guidance on filling the fuel tank and checking engine oil levels.

SERVICE AND MAINTENANCE

PERIODIC MAINTENANCE SCHEDULE

Recommended service intervals for engine, filters, and general upkeep.

ENGINE MAINTENANCE PROCEDURES

OFF-SEASON STORAGE

TROUBLESHOOTING GUIDE

PARTS LIST AND DIAGRAMS

Craftsman 247.37108 Specifications

General IconGeneral
Engine Type4-cycle
EngineBriggs & Stratton
Engine Displacement140cc
Cutting Width21 inches
Cutting Height Positions6
Starting SystemRecoil
Drive TypeSelf-propelled
Speed SettingsVariable
Grass Bag Capacity1.9 bushels
Cutting Height1.25-3.75 inches
Drive SystemRear-wheel drive
Discharge OptionsSide, Rear, Mulch
Wheel Size8 inches front, 11 inches rear

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