Clark TWLi20 User manual
Operator's Manual
TWLi20
OM-1206
JUN 2022 | REV 1.4
IMPORTANT! Do not remove this manual from the lift truck.
© 2022 CLARK Material Handling Company
4
Table of Contents
OM-1206
Information............................................................................................................................... 6
Overview................................................................................................................................... 7
A Message to Operators ......................................................................................................... 8
Introduction.............................................................................................................................. 9
How to Use this Manual .........................................................................................................11
Safety Standards ................................................................................................................... 12
Section 1. General Safety Rules........................................................................................... 13
Do’s and Don’ts ............................................................................................................... 14
Operator Protection ......................................................................................................... 15
Pedestrians ..................................................................................................................... 16
Upright............................................................................................................................. 17
Travel............................................................................................................................... 18
Parking ............................................................................................................................ 19
Tipover............................................................................................................................. 20
Section 2. Operating Hazards............................................................................................... 23
Load Handling ................................................................................................................. 24
Collisions ......................................................................................................................... 26
Drop-Os......................................................................................................................... 27
Ramps and Grades ......................................................................................................... 28
Surface and Capacity ...................................................................................................... 29
Section 3. Know Your Lift Truck........................................................................................... 31
Overview ......................................................................................................................... 32
Operator Controls............................................................................................................ 33
Seat ................................................................................................................................. 36
Steering Column.............................................................................................................. 37
Armrest............................................................................................................................ 38
Parking Brake.................................................................................................................. 39
Operator Presence System ............................................................................................. 40
Data Plate........................................................................................................................ 41
Decals ............................................................................................................................. 42
5
Section 4. Operating the Display ......................................................................................... 45
Display Overview............................................................................................................. 46
Icons................................................................................................................................ 48
Menu ............................................................................................................................... 52
Operator Settings ............................................................................................................ 55
Section 5. Operating Your Lift Truck ................................................................................... 57
Before Operating the Lift Truck ....................................................................................... 58
Safe Operation ................................................................................................................ 59
Forks and Upright............................................................................................................ 60
Load Handling ................................................................................................................. 61
Braking ............................................................................................................................ 66
Parking ............................................................................................................................ 67
Section 6. Maintaining Your Lift Truck ................................................................................ 69
Safe Maintenance ........................................................................................................... 70
Operator's Daily Checklist ............................................................................................... 71
Daily Inspection ............................................................................................................... 72
Cleaning .......................................................................................................................... 74
Planned Maintenance...................................................................................................... 75
Forks and Lift Chain ........................................................................................................ 77
Wheels and Tires............................................................................................................. 79
Lithium-Ion Battery .......................................................................................................... 80
Section 7. Towing .................................................................................................................. 85
Emergency Towing .......................................................................................................... 86
Section 8. Specications ...................................................................................................... 89
TWLi20 ............................................................................................................................ 90
6
Information
Lift Truck Information
Lift Truck Information
Model
Type
Serial No.
Truck Weight
Rated Capacity
Gross Weight
Component Serial Number
Drive Axle (left)
Drive Axle (right)
Steer Axle
Hydraulic Pump/Motor
Controller(s)
7
Overview
Overview
YOU can prevent accidents
First: Know the rules of safe lift truck operation and the safety
rules specic to your work area.
Next: Read the Operator's Manual. If you do not understand
something, ask your supervisor.
LEARN about the lift truck you operate!
WARNING
If you do not follow these rules, there is a risk of injury or death.
IMPORTANT!
Do not expose this manual to hot water or steam.
Know YOUR lift truck
Then: Operate your lift truck safely.
And: Keep your lift truck in a safe operating condition
with correct and regular maintenance.
8
A Message to Operators
A Message to Operators
Your CLARK lift truck is a specialized machine with unique operating characteristics, designed to
perform a specic task. It requires specic instructions and rules for safe operation and maintenance.
Its function and operation is not like a car or ordinary passenger vehicle. Specialized instructions
and rules are required to ensure safe and correct operation and maintenance.
The safe operation of our lift trucks is of utmost importance to CLARK.
Lift truck accidents are most commonly caused by...
• An incorrectly trained operator.
• An inexperienced operator.
• An operator not obeying basic lift truck safety rules.
• A damaged or malfunctioning lift truck.
For these reasons, CLARK wants you to know how to safely operate and properly maintain
your lift truck.
The primary function of this manual is to help you learn how to safely operate your lift truck. This
manual gives the correct safety rules and hazards of lift truck operation. It also identies the
special components and features of your specic lift truck and tells their function.
This manual is not a training manual. It is a resource to assist trained and authorized operators
how to safely operate their lift truck by showing the correct procedures.
This manual does not include information about every possible condition that may result in an
accident. Be aware of all possible hazards in your specic work area and be certain to correct
or avoid them.
Always make sure that the lift truck is maintained to a safe, working condition. Do not operate a
damaged or malfunctioning lift truck. Practice safe operation each time you operate your lift truck.
Let's set high standards in safety together!
Before starting the lift truck, make sure you understand all safe and correct operating procedures.
It is your responsibility to operate the lift truck safely and eciently.
Know that both the federal Occupational Safety and Health Act (OSHA) and state and local law,
require operators to be trained and certied in the safe operation of their lift truck. It is an OSHA
requirement that lift truck be inspected BEFORE every shift. If you have not been certied (or
need recertication) to operate or inspect your lift truck, tell your supervisor.
All CLARK lift trucks are designed and built to handle hard work, but not abuse from an operator.
They are designed and built to be dependable, but are only as safe and ecient as the operator(s)
and person(s) responsible for using and maintaining them.
Do not make repairs to any lift truck unless you have been authorized and properly trained to do so.
For questions concerning the proper maintenance or repair of your CLARK lift truck, please
contact your CLARK dealer.
Only use genuine CLARK replacement parts and accessories to ensure optimal performance
of your lift truck!
9
Introduction
Introduction
Foreword
CLARK welcomes you to the growing group of professionals who own, operate, and maintain
our lift trucks. We take pride in our tradition of quality product and superior value that the CLARK
name represents.
This operator's manual has been specially prepared to help you use and maintain your CLARK
lift truck in a safe and correct manner. It describes the safe operation, maintenance, and features
unique to your CLARK lift truck.
The safe and productive operation of your lift truck depends on both skill and operator knowledge.
The operator must...
• Read and understand the safety rules found in this manual.
• Read and practice the safe driving and safe load handling techniques shown in
this manual.
• Know the construction and features of the lift truck and how they function.
• Know the capabilities and limitations of the lift truck.
• Ensure the lift truck is maintained to a safe working condition
Your CLARK lift truck has been designed and built to be as safe and ecient as today’s technology
can allow. As manufactured, it meets all applicable and mandatory design and construction
requirements of the ANSI / ITSDF B56.1 Safety Standard for Low Lift and High Lift Trucks.
Importance of Routine Inspection and Maintenance
The regular care and maintenance of your CLARK lift truck is absolutely necessary for your
safety. It ensures a lower overall cost of ownership and optimal lift truck productivity. A damaged
or malfunctioning lift truck is a potential source of danger to the operator, any personnel working
nearby, and anyone else in the area.
Always keep your lift truck in a safe, operating condition by following the recommended service
schedule described in the Planned Maintenance section of this manual.
Operator's Daily Inspection
You are required to inspect your lift truck daily and to ensure it is safe to operate. The importance
of this Daily Inspection is described later in this manual. You can provide your own checklist
sheet or your CLARK dealer can supply you with copies of a helpful Operator's Daily Checklist
that is specic to your lift truck.
Planned Maintenance
In addition to the Daily Inspection, CLARK recommends that a Planned Maintenance (PM) program
be performed by an authorized and properly trained technician. This safety and maintenance
inspection and service will provide an opportunity to thoroughly examine the operating condition
of your lift truck. Any Planned Maintenance can be scheduled through your CLARK dealer to
meet your particular lift truck application and usage.
10 Introduction
The periodic Planned Maintenance program covers inspections, operational checks, cleaning,
lubrication, and minor adjustments. Any necessary adjustments and timely maintenance will be
performed to maximize the service life of components and reduce unscheduled downtime. These
procedures are outlined in this manual and described in detail in your specic lift truck's service
manual. Your CLARK dealer can help with implementing a Planned Maintenance program and
providing properly trained and authorized service technicians to keep your lift truck operating
safely and eciently.
Always Practice Safe Operation
Incorrect operation can cause accidents. Do not operate an improperly setup, damaged, or
malfunctioning lift truck.
Read and understand the procedures for safe driving and maintenance described in this manual.
If you have questions, ask for assistance.
Stay alert and follow the safety rules, regulations, and procedures for lift truck operation. Avoid
accidents by identifying and avoiding potentially dangerous procedures or situations.
Drive and work safely and follow the safety messages in this manual and attached to your lift truck.
Safety Messages and Warnings
The safety messages and warnings, found in this manual and attached to the lift truck, identify
specic areas where potential hazards exist. Make sure to know and understand the meaning
of these instructions, symbols, and messages. Damage to the lift truck, serious injury, or death
to you and/or other personnel may result if these messages are not followed.
NOTE
Provides helpful information related to procedures, equipment, tools, specications, or
other special data.
WARNING
There is a risk of injury or death to the operator or nearby personnel.
CAUTION
There is a risk of damage to the lift truck or nearby objects.
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