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Craftsman M115 - User Manual

Craftsman M115
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WARNING!
Before using this equipment, read the manual and follow all safety rules and operating instructions. SAVE THESE INSTRUCTIONS.
Form No. 769-20451
(February 13, 2019)
INSTRUCTION MANUAL | MANUAL DE INSTRUCTIONES
MOWER
Model Nos. M115
M125
IF YOU HAVE QUESTIONS OR COMMENTS, CONTACT US.
SI TIENE DUDAS O COMENTARIOS, CONTÁCTENOS.
1-888-331-4569 WWW.CRAFTSMAN.COM
NOTE: This Operator’s Manual covers several models. Features may vary by model. Not all features in this manual are applicable to all models and the model depicted may differ
from yours.
TABLE OF CONTENTS
Safety Instructions ............................................... Pages 2-5
Slope Guide ..........................................................Page 6
Unpacking ...........................................................Page 7
Assembly .........................................................Pages 7-9
Adjustments ..............................................................9
Operation .......................................................Pages 10-11
Service and Maintenance ........................................Pages 12-14
Off-Season Storage ..................................................Page 15
Troubleshooting .....................................................Page 16
Español ...........................................................Page 17

Table of Contents

Questions and Answers

  • O
    Oscar WuAug 12, 2025
    Why won't my Craftsman M115 start?
    • J
      Johnny GrayAug 12, 2025
      If your Craftsman Lawn Mower engine won't start, several factors could be at play. First, make sure the blade control is engaged. Next, check that the spark plug boot is connected securely. An empty or stale fuel tank can also prevent starting, so fill it with clean, fresh gasoline. If your mower has a primer, use it as instructed. A faulty spark plug might be the culprit, requiring cleaning, gap adjustment, or replacement. In case the engine is flooded, wait a few minutes before attempting to restart. Finally, a blocked fuel line can cause starting issues; contact a Parts & Repair Center to have it cleaned.
  • C
    cjuarezAug 16, 2025
    Why does my Craftsman M115 have an uneven cut?
    • S
      Suzanne LewisAug 16, 2025
      If your Craftsman Lawn Mower is providing an uneven cut, ensure the wheels are positioned correctly by adjusting 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 it.
  • R
    Robert RobinsonAug 20, 2025
    Why does my Craftsman M115 engine run erratic?
    • J
      Juan GrahamAug 20, 2025
      If your Craftsman Lawn Mower engine is running erratically, start by checking the spark plug boot to ensure it is tightly connected. Stale fuel can also cause this issue, so replace it with fresh gasoline. Make sure the vent in the gas cap isn't plugged; clear it if necessary. Water or dirt in the fuel system could be the problem; run the engine until it stops from lack of fuel, then refill with fresh fuel. If the air cleaner is dirty, refer to the Engine Manual for Air Cleaner Maintenance. A blocked fuel line might also be the cause; contact a Parts & Repair Center to have the fuel line cleaned.
  • R
    Russell MartinAug 25, 2025
    What to do if my Craftsman Lawn Mower will not mulch grass?
    • K
      Kimberly ReyesAug 25, 2025
      If your Craftsman Lawn Mower is not mulching grass effectively, it might be due to wet or excessively high grass or a dull blade. Avoid mowing when the grass is wet; wait until it's dry. If the grass is too high, mow it first at a high setting, then mow again at the desired height, or reduce the cutting path width. If the blade is dull, sharpen or replace it.
  • M
    markadamsAug 27, 2025
    Why is my Craftsman M115 Lawn Mower engine overheating?
    • M
      Mrs. Stacy CoxAug 28, 2025
      If your Craftsman Lawn Mower engine is overheating, check the engine oil level and fill the crankcase with the correct oil if it's low. Also, ensure that airflow isn't restricted by cleaning the area around and on top of the engine.
  • J
    Jennifer FosterAug 31, 2025
    Why is my Craftsman M115 Lawn Mower vibrating so much?
    • K
      Kara CarrAug 31, 2025
      If your Craftsman Lawn Mower is vibrating excessively, it could 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.
  • K
    knormanSep 4, 2025
    Why does my Craftsman M115 idle poorly?
    • B
      browncaseySep 4, 2025
      If your Craftsman Lawn Mower idles poorly, the spark plug may be fouled, faulty, or have a gap that is too wide. Reset the gap or replace the spark plug. If the air cleaner is dirty, refer to Air Cleaner Maintenance in the Engine Manual.
  • R
    robert13Sep 7, 2025
    What causes occasional skips in Craftsman M115 Lawn Mower?
    • L
      Lisa OneillSep 7, 2025
      If your Craftsman Lawn Mower occasionally skips or hesitates, the spark plug gap might be too close. Adjust the gap, referring to the Spark Plug Maintenance section in the Engine Manual.

Summary

Safety Instructions

General Operation and Dangers

Covers general operation, critical dangers, warnings, and Proposition 65.

Safe Mowing Practices

Details specific safe practices for mowing, including hand placement and backing up.

Slope and Children Safety

Focuses on safe operation on slopes and ensuring children's safety around the mower.

Gasoline and Engine Safety

Provides guidelines for safe gasoline handling and general engine safety precautions.

Service and Storage Safety

Covers safety during service, storage, engine modification, and emissions compliance.

Safety Symbols Explained

Explains the meaning of various safety symbols used on the mower and in the manual.

Slope Gauge

Using the Slope Gauge

Instructions on how to use the provided slope gauge to determine safe mowing angles.

Slope Operation Warnings

Warnings about operating on slopes, emphasizing caution and maximum angle limits.

Operation

Blade Control and Safety

Explains the function and safety aspect of the blade control lever.

Recoil Starter

Gas and Oil Fill-Up

Important instructions on filling the engine with gasoline and oil before operation.

Starting the Engine

Foreign Object Impact

Stopping the Engine

Service and Maintenance

Maintenance Schedule

Engine Maintenance

Blade Care

Procedures for inspecting, removing, balancing, and installing the mower blade.

Troubleshooting

Engine Fails to Start

Common causes and remedies for the engine not starting.

Engine Runs Erratic

Engine Overheats

Occasional Skips or Hesitation

Idles Poorly

Excessive Vibration

Uneven Cut

Craftsman M115 Specifications

General IconGeneral
Engine Displacement140cc
Cutting Width21 inches
Grass Bag Capacity1.9 bushels
Mulching CapabilityYes
Side DischargeYes
Rear DischargeNo
Cutting Height Positions6
Wheel Size7 inches front, 8 inches rear
Cutting Height1.25 - 3.75 in
Engine TypeGas
Start TypePull Cord

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