Craftsman 900.370520 User Manual [en, es]

Operator’s Manual
CRRFTSMRN.
CORDLESS
24VOLTir CONVERTIBLE MULCHING
MOWER
Model No. 900.370520
CAUTION: Before using this product, read
this manual and follow all its
Safety Rules and Operating instructions.
Sears, Roebuck and Co., Hoffman Estates, IL 6017
• Safety
• Assembly
• Operation
• Maintenance
• Parts
• Español
264774-01
TABLE OF CONTENTS

Warranty

Safety Instructions

Assembly
Operation Maintenance Schedule Product Specifications
LIMITED TWO YEAR WARRANTY ON CRAFTSMAN POWER MOWER For two years from date of purchase, when this Craftsman Lawn Mower is maintained,
lubricated, and tuned up according to the operating and maintenance instructions in the
owner’s manual, Sears will repair free of charge any defect in material or workmanship. If this Craftsman Lawn Mower is used for commercial or rental purposes, this warranty
applies for only 90 days from the date of purchase. This Warranty does not cover:
• Expendable items which become worn during normal use, such as rotary mower blades, blade adapters, and belts.
• Repairs necessary because of operator abuse or negligence, including bent crank shafts and the failure to maintain the equipment according to the instructions contained in the owner’s manual.
WARRANTY SERVICE IS AVAILABLE BY returning the Craftsman power mower to the nearest Sears Service Center in the United States. This warranty applies only while this product is in use in the United States.
This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sears, Roebuck and Co., Hoffman Estates, 11 60179 USA.
2
Maintenance 16
2
Service and Adjustments 17 5 Storage 8
Troubleshooting
16 16 Parts Ordering
WARRANTY
Illustrated Parts List
17 18 19 20
SAFETY INSTRUCTIONS
WARNING: Do not attempt to operate this mower until you thoroughly read and com
pletely understand all instructions, safety rules, etc. contained in this manual. Failure to comply can result in accidents Involving fire, electric shock, or serious personal injury. Save Owner's Manual and review frequently for continuing safe operation and instructing others who may use this mulching mower.
Safety standards require an Operator Presence Control Switch to minimize the
risk of injury. Your unit is equipped with such a Control Switch. Do not attempt to defeat its function under any circum stances.

TRAINING:

• Read this operator’s manual carefully. Become familiar with the controls and know how to operate your mower prop erly. Learn how to quickly stop mower.
• Avoid dangerous environments. Do not use your mower in the rain or in damp or wet locations. Do not operate it in gaseous or explosive atmospheres.
Motors normally spark and sparks may
Ignite fumes,
• Do not allow children to use your mower. Never allow adults to use mower without proper instructions. _
• Keep the area of operation clear of all
persons, especially small children and pets.
• Usé'mower only as described in this manual.
• Do not operate mower if it has been dropped or damaged in any manner. Always have damage repaired before using your mower.
• Do not use accessory attachments that are not recommended in this manual. Use of such attachments^may be haz ardous.
• The blade always turns when the motor is running.
• Avoid accidental starting. Do not play with the Operator Presence Control switch when mower is not in use.

PREPARATION:

• Always thoroughly check the area to be mowed and clear it of all stones, sticks, wires, bones, and other foreign objects. These objects will be thrown by the blade and can cause severe injury.
• Always wear safety glasses or eye shields when starting and while using your mower.
• Dress properly. Do not operate mower when barefoot or wearing open sandals. Wear only solid shoes with good traction when mowing.
• Always make wheel height adjustments before starting your mower. Do not attempt to do this while the mower is
running.
• Mow only in daylight or good artificial light.
• Do not plug mower in until it is ready to be used.
• Protect your lungs. Wear a face or dust
mask if mowing operation is dusty.
• Remove all adjusting wrenches from mower before turning it on.

OPERATION:

The operation of any lawn mower can result in foreign objects thrown into the eyes, which can
result in severe eye damage. Always wear
safety glasses or eye shields while operat
ing your lawn mower or performing any adjustments or repairs. We recommend a wide vision safety mask over the specta cles or standard safety glasses with side
shields, available at Sears.
CAUTION; Frequently check gasscatch­er bag for deterioration or wear. Replace, if necessary, with identical Craftsman bag. Failure to do so may result in Injuiy from mower discharge of grass and debris.
• Keep your eyes and mind on your mower and the area being cut. Do not fet other interests distract you.
• Do not mow wet or slippery grass. Never run while operating your mower. Always be sure of your footing - keep a firm hold on the handles and walk.
• Do not put hands or feet near or under rotating parts. Keep clear of the dis charge opening at all times.
• Always stop the motor whenever you leave or are not using your mower, or before crossing driveways, walks, roads, and any gravel-covered areas.
• Never direct discharge of material toward bystanders or allow anyone near the mower while you are operating it.
• Guard against electric shock. Repair or replace damaged mower cord or exten sion cord immediately.
• Don’t abuse the cord. Never pull lawn­mower by the cord. Disconnect by gently pulling the plug, not the cord,
• Before cleaning, inspecting, or repairing your mower, stop the motor and make absolutely sure the blade and all moving parts have stopped. Then unplug the cord to prevent accidental starting.
• If lawn mower strikes a foreign object, follow these steps:
i) Stop lawn mower. Release the switch. ii) Remove safety key. iii) Inspect for damage. iv) Repair any damage before restarting
and operating the lawn mower.
• Do not operate your mower if it vibrates abnormally. Excessive vibration is an indication of damage; stop the motor and safely check for the cause of vibration. Repair as required.
• Do not run the motor indoors.
• Never cut grass by pulling the mower towards you. Mow across the face of slopes, never up and down or you might lose your footing. Do not mow exces sively steep slopes. Use caution when
operating the mower on uneven terrain or when changing directions - maintain good footing.
• Never operate your mower without prop er guards, plates or other safety devices in place.
• Don't force the mower. It will do the job better and safer at the rate for which it is
designed. When mowing on rough sur faces or in high grass, select a higher cutting position.
• Don’t overreach. Keep proper footing
and balance at all time.
• Stay alert. Watch what you are doing
and use common sense. Do not operate mower when you are tired. Do not run or
rush when mowing.
• Do not operate mower while under the
influence of drugs, alcohol, or any med ication. Attempting to do so can result in serious injury.
• Keep away from blade area. Be aware of
the risk of injury. Keep hands and feet away from the blade.
DANGER: DO NOT attempt to remove
cut material or unclog debris from under mower deck while blade is moving, or you will be seriously injured.
• If mower stalls, release operator pres ence control switch and wait for blade to stop rotating. Remove safety key before
attempting to remove anything from
under mower deck. Thoroughly inspect
and have any damage repaired before
restarting and operating mower.

BATTERY OPERATION & CARE

CAUTION: Use only identical replacement
battery. Take mower to a Sears Service Center for Battery Replacement.
The battery in your cordless mower is a
24-volt sealed lead acid system. Since there is no liquid contained within the bat tery, the mower can be stored in any posi tion without fear of leakage.
• To get maximum battery life, fully
charge battery prior to initial use.
• It may take 2 or 3 initial charging cycles to achieve maxiumum run time capacity.
• The battery should be charged after
every use, even if not fully discharged.
• For optimum performance the battery should be kept on constant charge when
not in use.
• The battery charges best in a cool, dry place.
• The battery does not need to be fully dis charged before recharging.
• The battery can be safely stored down to
-40“C (-40T).
• The battery is maintenance free.
• Off-season storage
i. In warmer climates to ensure optimum
performance, the battery should be maintained on constant charge.
ii. The mower may be stored with the
charger disconnected If all of the fol lowing conditions are met.
-the mower is fully charged before stor ing.
-the average temperature of the stor age location is below 10°C (50“F)
-Storage duration is less than 6 months

CHARGER SAFETY RULES

• Plug charger directly into an electrical
outlet. DO NOT ABUSE THE CORD. Never carry charger by cord. Do not
■ disconnect the charger from the outlet or mower by pulling it by the cord.
CAUTION; To reduce the risk of fire, electrical shock, or personal injury do not attempt to use this charger with any other product. Likewise, do not attempt to charge the mower with any other charger.
• Do not service mower with charger or safety key installed.
• Do not operate a damaged charger. Replace damaged cords or charger immediately at a Sears Service Center.
• Always charge the mower in a dry area protected from the weather. Do not expose the mower or charger to rain. Do not charge in wet locations. Do not charge mower when temperature is above 40”C (104T) or below 5“C (41 “F).
• Keep the mower and charger away from water and heat sources, (such as radiators, heaters, stoves etc.), flames or chemicals. Be careful not to damage the charger cord. Keep cord away from sharp edges.
CAUTION: Unplug charger from wall out let before unplugging charger cord from mower. Failure to do so may result in per sonal injury or damage to charger. Always unplug charger before attempting to clean mower.
MAINTENANCE AND STORAGE:
• Check the blade and the motor mounting bolts often to be sure they are tightened properly. .
• Check all bolts, nuts and screws at fre quent intervals for proper tightness to be sure mower is in safe working condition.
• Keep all safety devices in piace and working.
• To reduce fire hazard, keep the motor
free of grass, leaves or excessive grease
and oil.
• Always keep the blade on your mower
sharp.
• Allow motor to cool before storing in any
enclosure.
• Keep mower dry and clean. Always use a clean damp cloth when cleaning. Never use brake fluids, gasoline, petrole um-based products, solvents, or water to clean mower.
• Do not mow if switch does not turn mower on and off. Have defective switch replaced at Sears Service Center.
• Check damaged parts. Before further use of the mower, a guard or other part that Is damaged should be carefully checked to determine that It will operate properly and perform its Intended func tion, Check for alignment of moving parts, binding of moving parts, breakage of parts, and any other conditions that may affect mower operation. A guard or other part that is damaged should be properly repaired or replaced by a quali fied service technician.
• When servicing use only identical Craftsman replacement parts. Servicing
of this mower should be performed only by a qualified service technician. For repair service we suggest you return mower to your nearest Sears Service Center.
• When replacing blade, uea only Identical Craftsman replacement blade. Use of
any other blade may result In serious personal injury or damage to mower.
Store mower inside. When not in use, mower should be stored indoors in a garage, basement, etc. Storage area should be a dry, locked-up place - out of reach of children.
Maintain mower with care. Keep blade sharp and clean for best and safest per formance. Follow instructions for lubricat ing and changing accessories.
REPLACEMENT BLADE
The replacement blade is stock # 33243 and is available at Sears Retail Stores and Service Centers.
ASSEMBLY
CARTON CONTENTS
• Mulching Mower (Shipped with Mulch Insert installed)
• Side discharge chute
• Grassbag
• Graascatcher frame
• Charger
TO REMOVE MOWER FROM CARTON
Your mulching mower has been complete
ly assembled at the factory except for the
Grasscatcher. CAUTION: Do not lift the mower off the
ground by holding the height adjustment finger grip.
• Remove the Grasscatcher frame, Grassbag, Side discharge chute, charger
and cardboard fillers.
• Remove the mower from the carton and place all four wheels on the ground or floor.
• Check the carton thoroughly and make sure there are no loose parts remaining inside.
To Unfold Handle
Raise the handle section into place and secure by tightening the two knobs. See figure below.
WARNING: For your own safety DO NOT use this mower without either the Grasscatcher or Mulch Insert in operating position.

QRASSCATCHER ASSEMBLY

• Slide the grassbag onto the grasscatcher frame. (See Fig. A)
• The grassbag has attachment dips sewn
around the bag opening.
• Attach the two top clips to the frame, then attach the side clips, and lastly the bottom dip. (See Fig. B)
• Refer to “To Install Grasscatcher” instruc tion before attaching to mower.

TO INSTALL GRASSCATCHER

• Reach down between the mower handle and raise the rear door to a vertical posi tion. (See Fig. A)
• Remove the mulch insert. See page 12 “To Remove Mulch Insert”,
• Pick up the grasscatcher by the handle and lower the grasscatcher between the lawnmower handles. Position the grass catcher hanger hooks on the metal rod under the rear door. (See Fig. B).
• Release the rear door. WARNING: Never operate the mower
unless the hanger hooks on the grass catcher are seated properly, and the rear
discharge door rests firmly against the top of the grasscatcher.
TO INSTALL SIDE
DISCHARGE CHUTE
• Shut the mower off, wait until the blade stops, and unplug power cord.
• Reach down between the mower han dles, raise the rear door and hold it up with one hand. Ensure that the mulch insert has been removed. See page 12, 'To Remove Mulch Insert",
• Grasp the discharge chute with the other hand and while tilting It downwards Insert its hook into the mower’s discharge opening. (See Fig. A)
• Rotate the chute until it is in flat contact with the deck, and the bottom ribs fit into the deck grooves. (See Fig. B)
• Lower the rear door until it rests on top of the discharge chute.

WARNING:

• Do not use the discharge chute if it is
damaged.
• For your own safety, DO NOT use the mower without either the grasscatcher, mulch insert, or the discharge chute in
operating position.

OPERATION

KNOW YOUR MULCHING MOWER READ THIS OWNER’S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR
MOWER. See diagram below to familiarize yourself with the location of various controls
and adjustments. Save this manual for future reference. These symbols may appear on your mower or in literature supplied with the product.
Learn and understand their meaning.
CAUTION
OR WARNING
PAWOBira
DANGER, KEEP HANDS
AND FEET AWAY

MEETS UL 1447 SAFETY REQUIREMENTS

Sears rotary, walk-behind, electrically powered lawn mowers conform to the safety requirements of Underwriters Laboratories (UL) Standard 1447.
WARNING: Blade always turns when motor is running.
Safety key (1) Operator Presence Control Switch consists
of Bail handle (2) and Switch lever (3)
Handle adjustment knobs (4)
Handle storage knobs (5) Grassbag (6)
Cutting Height Adjustment Release (7) Cutting height indicator (8)
CHARGING BATTERY
Although your mower battery was fully charged when it left the factory, it is nec essary to recharge it before initial use. This will ensure that the battery operates at full performance capability.
There are two charge Indicator lights on your mower. The red light (1) glows while the battery is charging. The green light (2) glows when the battery is fully charged. During the mowing season, plug the charger into mower whenever mower is not being used.
Safety Key
To prevent accidental start-up or unautho rized use, your mower has a removable Safety Key (3). The mower will not oper ate when the Safety Key is removed. The Safety Key has a hole In its center to allow for storage on a nail, out of the reach of children.
CAUTION! Always ramove Safety Key from mower when leaving mower unat tended, even for a short period of lime.
To Charge Battery
• Remove safety key (3).
• Plug the charger cord (4) into the recep tacle (5) on the mower. The charger cord plug has a retaining clip (6) which will lock the plug into the mower while charging to avoid accidental removal.
• insert the 120 volt plug (7) of the charg er (8) into the wall receptacle.
• The red light on the mower should come on Indicating you have power and the
battery Is being charged. The red light should extinguish and the green light com© on when charging is complete. It takes approximately 24 hours to charge
B fully dlicherged battery,
• l-or opilmum pGrloinumce during Ihe mowing season, always connect the mower to the charger when mower is not in use.
• To remove the plug from the mower, press retaining clip (6) firmly in the direction of the arrow and pull plug from charging receptacle on mower.
TO ADJUST CUTTING HEIGHT
(1-1/2" TO 3-1/2")
CAUTION: Before making any adjust
ments, release switch to turn mower off,
wait for blade to stop, and remove safety
key.
• Your mower features a "one touch” wheel height adjustment system. This system adjusts all four wheels at the same time.
• To raise or lower the cutting height, place the palm of your hand on the palm rest (1) and with your fingers squeeze upward on the finger grip (2) and hold. (See Fig. A)
While holding the finger grip up, you can raise or lower the cutting height. The mower has seven cutting height posi tions. They are indicated by the scale (1) and pointer (2) at the front of the mower. (See Fig. B)
When you have the mower at the height
you want, hold it in place by gripping the mower’s lower right handle bar with your left hand. Then release your right hand from the finger grip to lock the cut ting height into place.
NOTE: To ensure that the deck is securely locked in one of the seven cutting posi tions, press down on the palm rest after releasing the finger grip.
HANDLE ADJUSTMENT
TO START MOWER
• Make sure that charger cord is unplugged from the mower.
• Insert Safety Key into place on motor shroud. Push key down until it is seated.
The mower is now operational and can
be started by activating the switch sys tem.
CAUTION: Never attempt to override the operation of this switch and key system.
OPERATOR PRESENCE CONTROL SWITCH
Your mower has a variable height handle
adjustment feature. To adjust the handle
position, use the following procedure:
• Remove both knobs (1) on the middle part of the handlebars and remove the bolts (2).
• Slide the upper handle Into one of the 3 adjustment positions (3), aligning the holes in the upper and lower handles.
• Insert the bolts and install the knobs,
tightening securely. The knobs should always be on the outside of the handles to avoid interference with the rear door and grass bag,
TO STOP MOWER

To stop mower fully release your grip on the operator presence control switch.

CAUTION; Federal regulations require an Operator Presence Control Switch to be installed on lawn mowers in order to mini mize the risk of blade contact injury. DO NOT under any circumstances attempt to defeat the function of this switch. Remem ber that the blade always turns when the motor is running.
To operate the operator presence control switch, first grasp the bail handle (1} and
pull it to the handlebar (2). Then firmly push the switch lever (3) forward until it
snaps into the “on" position. To turn the
mower off, just release the bail handle.
in
BATTERY GAUGE
1
B ■
Highly Charged
2
B JH
Charge Depleted
Your Cordless Mulching mower has a gauge to provide you with information on your battery state of charge. While oper ating the mower, the gauge constantly senses and displays the battery condition as follows:
• When the needle is pointing in the green area (1), the battery is in a highly charged condition.
• When the needle is pointing in the red
area (2), the battery charge is depleted.
• Before using your mower for the first
time, charge the battery overnight to
ensure that it is fully charged. When
you first start your mower, the battery gauge ihould point In the green area,
Indicating a fully charged battery.
• As you use your mower, you will notice
that the needle in the battery gauge drops slowly as the battery discharges.
• While cutting grass with your cordless
mower, it is normal for the battery gauge needle to fluctuate somewhat as the cutting conditions change.
• When your battery gauge needle points
consistently in the red area, your battery is now discharged, even though the mower may still be capable of cutting grass. Continuing to operate your mulching mower with the battery in this discharged condition may reduce the life and performance of your battery,

Tha following sugoMtlona will help you to obtain optimum run time from your cordteae mower;

• Slow down in areas where the grass is especially long or thick, or raise the cut height.
• When mulching, avoid cutting more than
1-1/2 inches off the grass.
• Avoid mowing when the grass is wet from rain or dew-soaked.
• Cut your lawn frequently, especially dur ing high growth periods.
NOTE: You should recharge your mower after each use, regardless of the position of the battery gauge needle. Frequent charging will not harm your battery, and will ensure that the battery is fully charged and ratdy for its next use.

SAFETY SHIELD AND REAR DOOR

This safety shield (1) is designed to mini mize the throwing of stones or other objects by the mower blade backward from under the mower deck. The shield, along with the rear door (2), minimizes the possibility of accidental foot contact with the blade. DO NOT operate mower with out the safety shield and rear door in place.

WARNING;

• For your own safety DO NOT use this mower without either the grasscatcher or mulch insert in operating position.
* Do nol oparata the mower if the spring in
the rear door loses Its tension. Take your iawnmower to the nearest Sears Service center for repair.
11

MOWING TIPS

• Mow across the face of slopes, never up-and-down. Exercise extreme caution
when changing direction on slopes. Do not mow excessively steep slopes. Always maintain good footing.
• Release switch to turn mower "OFF"
when crossing any graveled area (stones can be thrown by the blade).
• Set mower at highest cutting height,
when mowing in rough ground or in tall weeds.
• From time to time turn off mower and
wait for the blade to come to a complete stop. Then remove the safety key and turn mower on its side. Using an object such as a stick, wipe out any accumula tion of grass in the biade area. Be care ful of the sharp edges of the blade.
• If grasscatcher is used during the fast
growing season, the grass may tend to clog up at the discharge opening. Turn the switch “OFF and remove the safety
key. Remove the catcher and shake the
grass down to the back end of the bag. Also clean out any grass or debris which
may be packed around the discharge opening, Replace the grass catcher, Clean often in wet, spring grass.
• If mower should start to vibrate abnor mally, turn mower “OFF" and remove safety key. Check immediately for cause. Vibration is a warning of trouble. Do not operate mower until a service check has been made.
• ALWAYS turn the switch “OFF" and remove safety key when leaving mower unattended even for a short period of time.

MULCHING

• Your mower is designed to re-cut the grass clippings many times and reduce
them in size so that, as they fall Into the
lawn, they will disperse into the grass and not be noticed. Also, the mulched grass will biodegrade quickly to provide nutrients to the lawn.
• Your mower was shipped with the Mulch Insert installed.
the maintenance section of this manual.
• Avoid cutting the lawn when it is wet. Wet grass tends to form clumps which interfere with the mulching action. The best time to mow your lawn is in the late afternoon. At this time the grass is dried and the newly cut area will not be exposed to the direct sun.
• For best results, adjust the mower cut ting height so that the mower cuts off only the top one-thirdof the grass blades. If the lawn is overgrown it will be neces sary to increase the cutting height to reduce the pushing effect and reduce overloading the motor. For extremely heavy mulching make narrower cuts and mow slowly.
• Certain types of grass and grass condi tions may require that an area be mulched a second time to completely hide the clippings. When doing a second cut, mow across or perpendicular to the first cut path. DO NOT mow perpendic
ular to the first path if It would cause
. mowing across a hiii.
• Change your cutting pattern from week to week. Mow north to south one week and east to west the next week. This will help prevent matting and graining of the lawn.

TO REMOVE MULCH INSERT

• Shut the mower off, wait until the blade stops and remove safety+:ey.
• Raise the rear door and hold it up.
• Locate your hand in the handle pocket of the mulch insert, lift and pull out the mulch insert completely.
• The rear discharge door is spring loaded. When you release it the door will return to the closed position.

TO INSTALL MULCH INSERT

• Shut the mower off, wait until the blade stops, and remove safety key.
• Raise the rear door and slide the mulch
insert into the discharge opening until it is firmly in contact with the deck.
• Release the rear door.

MULCHING MOWING TIPS

• For best performance, keep the mower housing free of built-up grass and trash. Clean after each use. See CLEANING in
12
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