Craftsman 37406 User Manual

ENGINE
FUEL SYSTEM
IMPORTANT: It is important to prevent
gum deposits from forming in essential fuel
system parts such as carburetor, fuel filter,
fuel hose, or tank during storage. Alcohol
blended fuels (called gasohol or using
ethanol or methanol) can attract moisture
which leads to separation and formation
of acids during storage. Acidic gas can
damage the fuel system of an engine while
in storage.
• Empty the fuel tank by starting the en-
gine and letting it run until the fuel lines
and carburetor are empty.
• Never use engine or carburetor cleaner
products in the fuel tank or permanent
damage may occur.
• Use fresh fuel next season.
NOTE: Fuel stabilizer is an acceptable al-
ternative in minimizing the formation of fuel
gum deposits during storage. Add stabilizer
to gasoline in fuel tank or storage container.
Always follow the mix ratio found on stabilizer
container. Run engine at least 10 minutes
after adding stabilizer to allow the stabilizer to
reach the carburetor. Do not empty the gas
tank and carburetor if using fuel stabilizer.
ENGINE OIL
Drain oil (with engine warm) and replace
with clean engine oil. (See "ENGINE" in
the Maintenance section of this manual).
CYLINDER
1. Remove spark plug.
2. Pour one ounce (29 ml) of oil through
spark plug hole into cylinder.
3. Pull starter handle slowly a few times
to distribute oil.
4. Replace with new spark plug.
BATTERY
Disconnect the battery from the engine
connector and charge battery 48 hours.
OTHER
• Do not store gasoline from one season
to another.
• Replace your gasoline can if your can
starts to rust. Rust and/or dirt in your
gasoline will cause problems.
• If possible, store your unit indoors and
cover it to protect it from dust and dirt.
• Cover your unit with a suitable protec-
tive cover that does not retain moisture.
Do not use plastic. Plastic cannot
breathe, which allows condensation to
form and will cause your unit to rust.
IMPORTANT: Never cover mower while
engine and exhaust areas are still warm.
,I_CAUTION: Never store the lawn
mower with gasoline in the tank inside a
building where fumes may reach an open
flame or spark. Allow the engine to cool
before storing in any enclosure.
TROUBLESHOOTING =See appropriate section in manual unless directed
to a Sears Parts & Repair Center.
PROBLEM CAUSE CORRECTION
.
2.
3.
4.
5.
6.
7.
8.
9.
Does not start
Dirty air filter.
Out of fue!.
Stale fuel.
Water in fuel.
Spark plug wire is
disconnected.
Bad spark plug.
Loose blade or broken
blade adapter.
Control bar in released
position.
Control bar defective.
10. Fuel valve lever (if so
equipped) in OFF position.
11. Weak battery (if equipped).
12. Disconnected battery
connector (if equipped).
13. Blown fuse (if equipped).
Clean/replace air filter.
Fill fuel tank.
Empty fuel tank and refill tank
with fresh, clean gasoline.
Empty fuel tank and refill tank
with fresh, clean gasoline.
Connect wire to plug.
.
2.
3.
4.
5.
6. Replace spark plug.
7. Tighten blade bolt or
replace blade adapter.
8. Depress control bar to
handle.
9. Replace control bar.
10. Turn fuel valve lever
to the ON position.
11. Charge battery.
12. Connect battery to engine.
13. Replace fuse.
19

Craftsman 37406 Specifications

General

Engine Brand	Briggs & Stratton
Engine Type	4-Cycle
Engine Displacement	140cc
Cutting Width	21 inches
Starter Type	Recoil
Drive System	Push
Cutting Height	1.25-3.75 inches
Wheel Size	7 inches (front), 8 inches (rear)
Oil Capacity	15 oz

Summary

Warranty Information

Safety Rules

General Operation Safety

Instructions for safe and proper operation of the lawn mower.

Slope Operation Precautions

Guidance and precautions for operating the mower on slopes.

Child Safety

Safety precautions regarding children around the mower.

Gasoline Handling

Precautions for safe handling and storage of gasoline.

Product Specifications

General Service

Repair Protection Agreements

Accessories

Assembly and Pre-Operation

Mower Unpacking

Step-by-step guide to safely unpack the lawn mower from its packaging.

Handle Setup

Instructions for correctly unfolding and securing the mower's handle.

Operation

Engine Speed and Controls

Information on engine speed settings and operator presence control.

Drive Control System

How to engage drive, control speed, and adjust the drive system.

Cutting Height Adjustment

Guide on how to adjust the mower's cutting height for desired lawn length.

Mowing Tips

Mulching Mowing Tips

Specific advice for optimal mulching performance and lawn health.

Maintenance

Maintenance Schedule

A detailed schedule of required maintenance tasks based on usage intervals.

General Recommendations

Important advice for maintaining the mower and preserving warranty.

Lubrication and Charts

Details on lubrication points and the lubrication chart.

Engine Lubrication

Oil Change Procedure

Step-by-step guide for changing the engine oil.

Air Filter Service

Instructions for cleaning or replacing the air filter for optimal engine performance.

Cleaning Procedures

Mower Housing Cleaning

Guidance on cleaning the mower housing and underside.

Drive Cover Cleaning

Instructions for cleaning the underside of the drive cover.

Service and Adjustments

Rear Deflector

Information about the rear deflector and its safety function.

Drive Belt Service

Procedures for removing and replacing the drive belt.

Handle Adjustment

How to adjust the mower handle to different height positions for comfort.

Engine

Engine Speed and Carburetor

Information on factory-set engine speed and carburetor adjustments.

Storage

Mower Storage Preparation

Steps to prepare the mower for long-term storage.

Handle Folding for Storage

Instructions on folding the handle for safe storage or transportation.

Troubleshooting