PDF Operation & Maintenance Manual Komatsu WA150-5 Wheel Loader - 971 KB
This is the complete Operation & Maintenance Manual for the Komatsu WA150-5 Wheel Loader (SN 73685 and up).
It provides operators with essential knowledge on safety, controls, and proper operating techniques.
The manual also outlines all scheduled maintenance procedures to ensure the machine's longevity and reliability.
Following these guidelines is the best way to protect your investment and maintain peak performance.
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TEN00209-05
WHEEL LOADER WA150 -5
SERIAL NUMBERS 73685 and up
WARNING
Unsafe use of this machine may cause serious injury or
death. Operators and maintenance personnel must read
this manual before operating or maintaining this machine.
This manual should be kept near the machine for
reference and periodically reviewed by all personnel who
will come into contact with it.
NOTICE
Komatsu has Operation & Maintenance Manuals
written in some other languages. If a foreign language
manual is necessary, contact your local distributor for
availability.
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CONTENTS FOREWORD
INITIAL 250 HOURS SERVICE 4- 16
WHEN REQUIRED 4- 17
CHECK BEFORE STARTING 4- 37
EVERY 50 HOURS SERVICE 4- 38
EVERY 100 HOURS SERVICE 4- 39
EVERY 250 HOURS SERVICE 4- 42
EVERY 500 HOURS SERVICE 4- 48
EVERY 1000 HOURS SERVICE 4- 54
EVERY 2000 HOURS SERVICE 4- 58
EVERY 4000 HOURS SERVICE 4- 64
SPECIFICATIONS 5- 1
SPECIFICATIONS 5- 2
ATTACHMENTS, OPTIONS 6- 1
SELECTING BUCKET AND TIRES 6- 2
HANDLING BATTERY DISCONNECTOR SWITCH 6- 3
EXPLANATION OF COMPONENTS 6- 3
HANDLING 6- 3
HANDLING MACHINES EQUIPPED WITH KOMTRAX 6- 4
BASIC PRECAUTIONS 6- 4
INDEX 7- 1
1 - 10
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SAFETY LABELS SAFETY
(17) Prohibition of engine start by short-circuiting (09842-A0481)
2 - 10
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PRECAUTIONS FOR OPERATION SAFETY
PRECAUTIONS FOR OPERATION
STARTING ENGINE
If there is a warning tag hanging from the work equipment control
lever, do not start the engine or touch the levers.
CHECKS BEFORE STARTING ENGINE
Carry out the following checks before starting the engine at the beginning of the day's work.
Remove all dirt from the surface of the window glass to ensure a good view.
Remove all dirt from the surface of the lens of the front lamps, working lamps, and rear combination lamp, and
check that they light up correctly.
Check the coolant level, fuel level, and oil level in engine oil pan, check for clogging of the air cleaner, and check
for damage to the electric wiring.
Check that there is no mud or dust accumulated around the movable parts of the accelerator pedal or brake pedal,
and check that the pedals work properly.
Adjust the operator's seat to a position where it is easy to carry out operations, and check that there is no damage
or wear to the seat belt or mounting clamps.
Check that the gauges work properly, check the angle of the lights and working lamps, and check that the control
levers are all at the neutral position.
Before starting the engine, make sure that the work equipment lock lever is in the LOCK position.
Adjust the mirrors so that the rear of the machine can be seen clearly from the operator's seat. See "ADJUST
REAR VIEW MIRROR (PAGE 3-80)".
Check that there are no persons or obstacles above, below, or in the area around the machine.
PRECAUTIONS WHEN STARTING
Start and operate the machine only while seated.
Do not attempt to start the engine by short-circuiting the engine starting circuit. Such an act may cause a serious
bodily injury or fire.
When starting the engine, sound the horn as a warning.
Do not allow anyone apart from the operator to ride on the machine.
When starting the engine, always check that the work equipment control levers are at the HOLD position.
2 - 20
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PRECAUTIONS FOR OPERATION SAFETY
STARTING WITH BOOSTER CABLES
If any mistake is made in the method of connecting the booster
cables, it may cause the battery to explode, so always do as
follows.
When starting with a booster cable, carry out the starting
operation with two workers (one worker sitting in the operator's
seat and the other working with the battery).
When starting from another machine, do not allow the two
machines to touch.
When connecting the booster cables, turn the starting switch
OFF position for both the normal machine and problem
machine. There is a hazard that the machine will move when the
power is connected.
Be sure to connect the positive (+) cable first when installing the
booster cables. Disconnect the negative (-) cable (ground side)
first when removing them.
When removing the booster cables, be careful not to let the
booster cable clips touch each other or to let the clips touch the
machine.
Always wear safety glasses and rubber gloves when starting the
engine with booster cables.
When connecting a normal machine to a problem machine with
booster cables, always use a normal machine with the same
battery voltage as the problem machine.
For details of the starting procedure when using booster cables,
see "STARTING ENGINE WITH BOOSTER CABLE (PAGE
3-122)" in the OPERATION section.
2 - 30
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EXPLANATION OF COMPONENTS OPERATION
E01: When a failure occurs in the mechanical system, such as a
drop in the level of the engine coolant, the maintenance
location is displayed. If the maintenance caution lamp lights
up at the same time, inspect and perform maintenance of the
item indicated after completion of the day's work or when
changing shifts. If "MAINTENANCE" is displayed together
with E01, check the failure code and ask for repairs to be
carried out.
REMARK
"E01" is displayed on the character display, and then
"MAINTENANCE" or the part of the machine requiring inspection,
filling of fluid, or replacement is displayed on the bottom line.
E00: If travel speed overrun is displayed, ease the accelerator
pedal back to reduce speed.
REMARK
"E00" is displayed on the character display, and then "OVERRUN
PROTECT" and "E00" are displayed in turn for 3 seconds each.
3 - 10
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EXPLANATION OF COMPONENTS OPERATION
INSPECTION AND MAINTENANCE ITEMS
CAUTION
If these lamps light up, stop operations quickly and carry out the following action.
(1) Radiator coolant level caution lamp (3) HST oil filter clogging caution lamp
(2) Maintenance caution lamp
RADIATOR COOLANT LEVEL CAUTION LAMP
This lamp (1) lights up to warn the operator that the coolant level in
the radiator has gone down.
During checks before starting (when the starting switch is turned to
the ON position but the engine is not started), this monitor lights up
if the coolant level in the radiator is low.
At the same time, "E01" and "COOLANT LOW" are displayed on
the character display in turn. Check the coolant level in the radiator
sub-tank, and add coolant.
During operation (engine running)
If the coolant level in the radiator becomes too low, the radiator
coolant level caution lamp will light up.
At the same time, "E01" and "COOLANT LOW" are displayed on the character display in turn. Stop the engine,
check the coolant level in the radiator sub-tank, and add coolant.
3 - 20
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EXPLANATION OF COMPONENTS OPERATION
SWITCHES
(1) Starting switch (8) Hazard lamp switch
(2) Speed range selector switch (9) Front working lamp switch
(3) Variable shift control switch (10) Rear working lamp switch
(4) Traction control switch (11) Monitor panel mode selector switch 1
(5) E.C.S.S. (Electronic Controlled Suspension (12) Monitor panel mode selector switch 2
System) switch (if equipped) (13) Front wiper switch
(6) Lamp switch (14) Rear wiper switch
(6) Turn signal lever (15) Cigarette lighter
(6) Dimmer switch (16) Room lamp switch
(7) Horn button
STARTING SWITCH
This switch (1) is used to start or stop the engine.
OFF position
The key can be inserted or with drawn. The switches for the electric
system are all turned off and the engine is stopped.
ON position
In this position, electric current flows to the charging circuit, lamp
circuit, and accessory circuit.
Keep the starting switch key at the ON position while the engine is
running.
START position
This is the engine-start position. Keep the key at this position during cranking. Immediately after starting the engine,
release the key. It will automatically return to the ON position.
3 - 30
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EXPLANATION OF COMPONENTS OPERATION
PARKING BRAKE LEVER
WARNING
Always apply the parking brake when leaving the machine or when parking it.
NOTICE
Never use the parking brake lever to slow the machine when traveling except in an emergency. The parking brake may be
damaged and this may lead to a serious accident. Apply the parking brake only after the machine has stopped.
If the parking brake has been used as an emergency brake when traveling at high speed (near the maximum speed), contact
your Komatsu distributor to have the parking brake checked for any abnormality.
This lever (6) operates the parking brake.
Pull the lever up to the LOCK position to actuate the parking brake.
At the same time, the parking brake pilot lamp will light up.
To release the brake, pull the lever, then press button (A) at the tip
of the lever and return the lever to the FREE position. At the same
time, the parking brake pilot lamp will go out.
REMARK
If the directional lever is placed at the FORWARD or REVERSE
position with the parking brake still applied, the central warning
lamp will light up and the buzzer will sound.
Before operating the directional lever, check that the parking brake
lever is at the FREE position.
When the parking brake is applied, the machine will not move even
if the directional lever is operated.
3 - 40
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EXPLANATION OF COMPONENTS OPERATION
METHOD OF OPERATION
LISTENING TO RADIO
1. Turn radio power switch (1) ON.
2. "BAND" switch (2) is used to select MW (AM) or FM.
3. Use the preset switch or tuning switch (3) to select the station.
4. Adjust the volume and tone as desired.
5. To turn the radio OFF, turn VOL knob (1) to the left until a click
is heard.
METHOD FOR SELECTING STATION AUTOMATICALLY
When the "SEEK" switch is pressed, it moves up to higher
frequencies and when it finds a station that can be received, it
stops automatically.
METHOD FOR SELECTING STATION MANUALLY
When the TUNE button U is pressed, the frequency goes up;
when the V button is pressed, the frequency goes down. If it is
kept pressed, the frequency changes continuously.
3 - 50
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EXPLANATION OF COMPONENTS OPERATION
REVERSING TAPE
When listening to the tape, press both FAST FORWARD,
REWIND buttons (A) and (B) at the same time lightly.
When this is done, the tape direction display will be reversed.
PRECAUTIONS WHEN USING
WARNING
If a voltage greater than the specified voltage is input, it may cause fire, electrocution, or other failure. Never input any voltage
other than the specified voltage.
Places inside the radio are under high voltage. Do not remove the cover.
Do not carry out any modifications. This may cause fire, electrocution, or other failure.
If the sound cannot be heard, nothing is displayed, or any other problem occurs, turn off the power switch and ask your
Komatsu distributor to make repairs without delay.
Stow the antenna when traveling in places with low overhead clearance.
To ensure safety during operations, keep the volume at a level where it is possible to hear other machines.
If water gets inside the speaker case or radio (auto tuning), it may cause a serious problem, take care not to let
water get in these items.
Do not wipe the scales or buttons with solvent such as benzene or thinner. Wipe with a dry soft cloth. If the dirt
cannot be removed easily, soak the cloth with alcohol.
NOTICE
Handling cassette tape
Clean the tape head approx. once a month with a commercially available head cleaning tape.
Do not leave the tape any place where it is exposed to direct sunlight, any place that is excessively dusty, or any place where
there is a magnetic field.
Do not use 120-minute tapes. The tape is thin and it easily gets caught up inside the machine.
If the tape is slack, it easily gets caught up inside the machine. Use a pencil to wind in the tape to remove any slack.
Do not use any cassette tape if the label has started to come off. It may cause defective rotation, or it may be impossible to get
the tape out of the machine.
3 - 60
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OPERATION OPERATION
CHECK WATER SEPARATOR
The water separator separates water mixed in the fuel. If float (1)
goes above water drain line (2), drain the water as follows.
1. Loosen drain plug (3) and drain the accumulated water until the
float (1) reaches the bottom.
2. Tighten drain plug (3).
3. If the air is sucked into the fuel line when draining water, be
sure to bleed air in the same manner as for the fuel filter. See
"REPLACE FUEL FILTER CARTRIDGE (PAGE 4-50)".
CHECK DUST INDICATOR
1. Check that the red piston has not appeared in the transparent
portion of dust indicator (1).
2. If the red piston has appeared, clean or replace the element
immediately.
For details on cleaning the element, see "CHECK, CLEAN, OR
REPLACE AIR CLEANER ELEMENT (PAGE 4-17)".
3. After checking, cleaning, or replacing the air cleaner element,
press the knob of dust indicator (1) to return the red piston to its
original position.
3 - 70
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OPERATION OPERATION
ADJUST REAR VIEW MIRROR
Sit in the operator's seat and adjust the rear view mirror so that you
can see properly to the rear.
3 - 80
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OPERATION OPERATION
CHANGING DIRECTION
WARNING
When changing direction between FORWARD and REVERSE, check
that the new direction of travel is safe. There is a blind spot behind the
machine, so be particularly careful when changing direction to travel in
reverse.
Do not switch between FORWARD and REVERSE when traveling at high
speed.
When switching between FORWARD and REVERSE, depress the brake
to reduce the travel speed sufficiently, then change the direction of
travel. (Max.speed for changing direction: 13 km/h (8.1 MPH))
There is no need to stop the machine even when switching
between FORWARD and REVERSE.
Place directional lever (1) in the desired position.
Position (a): FORWARD
Position N: NEUTRAL
Position (b): REVERSE
Check that the backup alarm sounds when the directional lever is set to REVERSE. If the backup alarm does not
sound, please contact your Komatsu distributor for repairs.
3 - 90
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OPERATION OPERATION
PRECAUTIONS FOR OPERATION
PERMISSIBLE WATER DEPTH
When working in water or on swampy ground, do not let the water
come above the bottom of the axle housing.
After finishing the operation, wash and check the lubricating points.
IF WHEEL BRAKE DOES NOT WORK
If the machine is not stopped by depressing the brake pedal, use the parking brake to stop the machine.
NOTICE
If the parking brake has been used as an emergency brake, contact your Komatsu distributor to have the parking brake checked
for any abnormality.
PRECAUTIONS WHEN DRIVING UP OR DOWN SLOPES
LOWER THE CENTER OF GRAVITY WHEN TURNING
When turning on slopes, lower the work equipment to lower the center of gravity before turning. It is dangerous to
turn the machine suddenly on slopes.
BRAKING ON DOWNHILL SLOPE
If the brake pedal is used frequently when traveling downhill, the brake will overheat and may be damaged. Release
the accelerator pedal to make full use of the braking force of the engine when traveling downhill.
Use the right brake pedal for braking.
If the brakes are used excessively, the axle oil temperature caution lamp may light up and the alarm buzzer may
sound intermittently. For details of the necessary action to take, see "AXLE OIL TEMPERATURE CAUTION LAMP
(PAGE 3-16)" in EXPLANATION OF COMPONENTS.
IF ENGINE STOPS
If the engine stops on a slope, apply the parking brake immediately, and lower the work equipment to the ground
and stop the machine. Then put the directional lever in neutral position, and start the engine again.
3 - 100
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TRANSPORTATION OPERATION
SECURING MACHINE
Load the machine onto a trailer as follows:
1. Lower the work equipment slowly.
2. Check that the work equipment control lever is at the HOLD
position, then set the work equipment lock lever to the LOCK
position.
3. Pull parking brake lever to the LOCK position while stepping
the brake pedal, then make sure the machine is completely
stopped.
4. Turn the starting switch to the OFF position to stop the engine,
and pull out the starting switch key.
5. Set the frame lock bar to the LOCK position to lock the front
frame and rear frame.
3 - 110
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TROUBLESHOOTING OPERATION
The towing machine should normally be of the same class as the machine being towed. Check that the towing
machine and towed machine both have ample braking power and that the towing machine has ample rimpull to
control both machines on the slopes or on the tow road.
When towing a machine downhill, it may be necessary to connect another machine to the rear of the machine
being towed in order to provide ample rimpull and braking power. This makes it possible to prevent the machine
from losing control.
Towing may be carried out under various differing conditions, so it is impossible to determine beforehand the
requirements for towing. Towing on flat horizontal roads will require the minimum rimpull, while towing on slopes
or on uneven road surfaces will require the maximum rim pull.
Connect a wire rope to the part indicated with the arrow in the
diagram at right.
WHEN ENGINE CAN BE USED
If the transmission and steering wheel can be operated, and the engine is running, it is possible to tow the
machine out of mud or to move it for a short distance to the edge of the road.
The operator should sit on the machine being towed and operate the steering in the direction that the machine
is towed.
WHEN ENGINE CANNOT BE USED
When towing a machine with the engine stopped, use the following procedure.
1. The transfer oil does not lubricate the system, so remove the front and rear drive shafts. If necessary, block the
tires to prevent the machine from moving.
2. The steering cannot be operated, so remove the steering cylinder.
Even if the brakes are in good condition, the brakes can only be used a limited number of times. There is no
change in the operating force for the brake pedal, but the braking force is reduced each time the pedal is
depressed.
3. Connect the towing equipment securely. When carrying out towing operations, use two machines of at least the
same class as the machine being towed. Connect one machine each to the front and rear of the machine being
towed, then remove the blocks from the tires and tow the machine.
EMERGENCY TRAVEL OPERATION
The normal gear shifting operation is carried out by electric signals. If there should be a failure in the electrical
system and the machine does not move, please contact your Komatsu distributor to have the machine moved.
NOTICE
Always request your Komatsu distributor to carry out the emergency travel operation.
3 - 120
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GUIDES TO MAINTENANCE MAINTENANCE
GUIDES TO MAINTENANCE
Do not perform any inspection and maintenance operation that is not found in this manual.
CHECK SERVICE METER:
Check the service meter reading every day to see if the time has come for any necessary maintenance to be
performed.
KOMATSU GENUINE REPLACEMENT PARTS:
Use Komatsu genuine parts specified in the Parts Book as replacement parts.
KOMATSU GENUINE OILS:
For lubrication of the machine, use the Komatsu genuine lubricants. Moreover use oil of the specified viscosity
according to the ambient temperature.
ALWAYS USE CLEAN WASHER FLUID:
Use automobile window washer fluid, and be careful not to let any dirt get into it.
ALWAYS USE CLEAN OIL AND GREASE:
Use clean oil and grease. Also, keep the containers of the oil and grease clean. Keep foreign materials away from
oil and grease.
CHECKING FOR FOREIGN MATERIALS IN DRAINED OIL AND ON FILTERS:
After oil is changed or filters are replaced, check the old oil and filters for metal particles and foreign materials. If large
quantity of metal particles or foreign materials are found, always report to the person in charge, and carry out
suitable action.
FUEL STRAINER:
Do not remove the strainer from the filler port when adding fuel.
WELDING INSTRUCTIONS:
Turn off the engine starting switch.
Do not apply more than 200 V continuously.
Connect grounding cable within 1 m (3.3 ft) of the area to be welded. If grounding cable is connected near
instruments, connectors, etc., the instruments may malfunction.
If a seal or bearing happens to come between the part being welded and grounding point, change the grounding
point to avoid such parts.
Do not use the area around the work equipment pins or the hydraulic cylinders as the grounding point.
DO NOT DROP THINGS INSIDE MACHINE:
When opening inspection windows or the oil filler port of the tank to carry out inspection, be careful not to drop
nuts, bolts, or tools inside the machine.
If such things are dropped inside the machine, it may cause damage and/or malfunction of the machine, and will
lead to failure. If you drop anything inside the machine, always remove it immediately.
Do not put unnecessary things in your pockets. Carry only things which are necessary for inspection.
4-2
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STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS MAINTENANCE
STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS
TORQUE LIST
CAUTION
If nuts, bolts, or other parts are not tightened to the specified torque, it will cause looseness or damage to the tightened parts, and
this will cause failure of the machine or problems with operation.
Always pay careful attention when tightening parts.
Unless otherwise specified, tighten the metric nuts and bolts to the torque shown in the table below.
If it is necessary to replace any nut or bolt, always use a Komatsu genuine part of the same size as the part that was
replaced.
Thread Width Tightening torque
diameter across
Target value Service limit
of bolt flats
(a)(mm) (b)(mm) Nm kgm lbft Nm kgm lbft
6 10 13.2 1.35 9.8 11.8-14.7 1.2-1.5 8.7-10.8
8 13 31 3.2 23.1 27-34 2.8-3.5 20.3-25.3
10 17 66 6.7 48.5 59-74 6.0-7.5 43.4-54.2
12 19 113 11.5 83.2 98-123 10.0-12.5 72.3-90.4
14 22 172 17.5 126.6 153-190 15.5-19.5 112.1-141
16 24 260 26.5 191.7 235-285 23.5-29.5 170.0-213.4
18 27 360 37 267.6 320-400 33.0-41.0 238.7-296.6
20 30 510 52.3 378.3 455-565 46.5-58.0 336.3-419.5
22 32 688 70.3 508.5 610-765 62.5-78.0 452.1-564.2
24 36 883 90 651 785-980 80.0-100.0 578.6-723.3
27 41 1295 132.5 958.4 1150-1440 118.0-147.0 853.5-1063.3
30 46 1720 175.0 1265.8 1520-1910 155.0-195.0 1121.1-1410.4
33 50 2210 225.0 1627.4 1960-2450 200.0-250.0 1446.6-1808.3
36 55 2750 280.0 2025.2 2450-3040 250.0-310.0 1808.3-2242.2
39 60 3280 335.0 2423.1 2890-3630 295.0-370.0 2133.7-2676.2
Apply the following table for Hydraulic Hose.
Width Tightening torque
Nominal -
across
No. of Target value Permissible range
flats (b)
threads (a)
(mm) Nm kgm lbft Nm kgm lbft
9/16 -18UNF 19 44 4.5 32.5 35 - 63 3.5 - 6.5 25.3 - 47.0
11/16 -16UN 22 74 7.5 54.2 54 - 93 5.5 - 9.5 39.8 - 68.7
13/16 -16UN 27 103 10.5 75.9 84 - 132 8.5 - 13.5 61.5 - 97.6
1 -14UNS 32 157 16.0 115.7 128 - 186 13.0 - 19.0 94.0 - 137.4
13/16 -12UN 36 216 22.0 159.1 177 - 245 18.0 - 25.0 130.2 - 180.8
4 - 12
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SERVICE PROCEDURE MAINTENANCE
5. Set a container in position to catch the coolant, then open valve
(3) under the radiator to drain coolant.
6. After draining the water, close drain valve (3) and fill with city
water.
7. When the radiator is full, start the engine, and run it at low idle.
Keep the engine running at low idle for 10 minutes until the
coolant temperature reaches more than 90°C (194°F).
8. Stop the engine, open drain valves (3), drain the water, then
tighten them again.
9. After draining the water, clean the cooling system with cleaning agent.
For the cleaning method, see the instructions for the cleaning agent.
10. Replace the corrosion resistor, then open 2 valves (1).
For details of the procedure for replacing the corrosion resistor, see "REPLACE CORROSION RESISTOR
CARTRIDGE (PAGE 4-57)".
(Machines equipped with corrosion resistor)
11. Add coolant through the water filler port up to the mouth of the port. For details of the COOLANT density, see
"COOLANT DENSITY TABLE".
12. To bleed the air from the cooling system, run the engine at low idle for 5 minutes, and for a further 5 minutes at
high idle. (When doing this, leave the radiator cap off.)
13. Drain the coolant from sub-tank (4), clean the inside of the
sub-tank, then add coolant until the coolant level is between
the FULL and LOW marks.
14. Stop the engine, wait for approximately 3 minutes, add coolant
up to the mouth of the filler port, and tighten the cap.
4 - 22
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SERVICE PROCEDURE MAINTENANCE
CHECK AIR CONDITIONER
(If equipped)
CHECK LEVEL OF REFRIGERANT (GAS)
WARNING
If the refrigerant used in the air conditioner gets into your eyes or on your hands, it may cause loss of sight or frostbite. Do not
touch the refrigerant. Never loosen any part of the refrigerant circuit.
Do not bring any flame close to any point where the refrigerant gas is leaking.
Remove cap (1) of the engine hood.
The sight glass of the receiver can be seen through the cap hole.
If there is a lack of refrigerant (gas), the cooling performance will be
poor. When operating the air conditioner at high speed with the
engine at full throttle, use the receiver sight glass (inspection
window) to check the condition of the refrigerant gas (R134a)
flowing in the refrigerant circuit.
No bubbles in refrigerant flow: Suitable
Some bubbles in flow
(bubbles pass continuously): Lack of refrigerant
Colorless, transparent: No refrigerant
REMARK
When there are bubbles, the refrigerant gas level is low, so contact your Komatsu distributors to have refrigerant
added. If the air conditioner is run with the refrigerant gas level low, it will cause damage to the compressor.
OPERATING THE AIR CONDITIONER OFF-SEASON
Even during the off-season, operate the air conditioner for 3 to 5 minutes once a month to maintain the oil film at all
parts of the compressor.
4 - 32
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SERVICE PROCEDURE MAINTENANCE
EVERY 250 HOURS SERVICE
Maintenance for every 50 and 100 hours service should be carried out at the same time.
CHECK BATTERY ELECTROLYTE LEVEL
Carry out this procedure before operating the machine.
WARNING
Do not use the battery if the battery electrolyte level is below the LOWER LEVEL line. This will accelerate deterioration of the
inside of the battery and reduce the service life of the battery. In addition, it may cause an explosion.
The battery generates flammable gas and there is danger of explosion, do not bring fire or sparks near the battery.
Battery electrolyte is dangerous. If it gets in your eyes or on your skin, wash it off with a large amount of water and consult a
doctor.
When adding distilled water to the battery, do not allow the battery electrolyte to go above the UPPER LEVEL line. If the
electrolyte level is too high, it may leak and cause damage to the paint surface or corrode other parts.
NOTICE
If there is a fear that the battery water may freeze after refilling with purified water (e.g. commercially available replenishment water
for a battery), do the replenishment before the day's work on the next day.
Inspect the battery electrolyte level at least once a month and follow the basic safety procedures given below.
WHEN CHECKING ELECTROLYTE LEVEL FROM SIDE OF BATTERY
If it is possible to check the electrolyte level from the side of the battery, check as follows.
1. Open the cover of the battery box.
There are two battery boxes: One on each side at the rear of the machine.
2. Use a wet cloth to clean the area around the electrolyte level
lines and check that the electrolyte level is between the
UPPER LEVEL (U.L.) and LOWER LEVEL (L.L.) lines.
If the battery is wiped with a dry cloth, static electricity may
cause a fire or explosion.
3. If the electrolyte level is below the midway point between the
U.L and L.L lines, remove cap (1) and add distilled water to the
U.L line.
4. If distilled water has been added to any cell of cap (1), add
distilled water also to the other cells.
5. Clean the vents of the battery caps, then close the caps
securely.
Keep the top of the battery clean and wipe it with a wet cloth.
REMARK
If distilled water is added to above the U.L. line, use a syringe to lower the level to the U.L. line. Neutralize the