Zetor PRIMO HT 20 NC User manual

OPERATOR´S MANUAL
PRIMO HT
1/2020
20
Tractor is Zetor. Since 1946.
1/20201/2020

ZETOR
This Operator’s Manual for the Zetor tractors, which we are presenting to you will help you to
become familiar with the operation and maintenance of your new tractor.
Although many of you have rich experience with the operation of other tractors, please, read the
information contained in this Operator’s Manual very carefully.
In the Manual you will find a lot of new information and get a perfect overview of how to use the
tractor with maximum efficiency during various kinds of work.
If you observe the rules of tractor operation and maintenance and driving safety, your new tractor will
become your reliable and long-term friend.
The manufacturer of the tractor wishes you thousands of hours of satisfactory work.
ZETOR
Brno
The technicalspecificationsandinformationaboutthedesign,equipment,materialandappearancearevalidatthe time
ofprint.The manufacturerreserves therightto implementchanges.
The instructions forusearea partofthe machine.
Printing errors reserved
1

2

Location of serial numbers..............................................................................................................................7
Product Warranty...........................................................................................................................................7
About this manual ............................................................................................................................................9
Rops (roll over protection structures)..........................................................................................................11
Roll-Over Protection Structure (ROPS).......................................................................................................11
ROPS damage ............................................................................................................................................12
Sliding Seat..................................................................................................................................................13
How to adjust the seat.................................................................................................................................13
Safety instructions .........................................................................................................................................15
Introduction to safety information ................................................................................................................15
Signal words................................................................................................................................................15
Introduction to safety instructions Introduction to safety instructions..........................................................15
Protection children.......................................................................................................................................15
Use of rops and seat belt ............................................................................................................................16
Precaution to avoid tipping..........................................................................................................................16
Safe parking of the tractor...........................................................................................................................16
Keep riders off tractor..................................................................................................................................16
Handle fuel safely-avoid fires ......................................................................................................................17
Stay clear of rotating shafts.........................................................................................................................17
Always use safety lights and devices..........................................................................................................17
Practice safe maintenance..........................................................................................................................18
Avoid high-pressure fluids...........................................................................................................................18
Prevent battery explosions..........................................................................................................................18
Prevent acid burns.......................................................................................................................................19
Battery disconnect.......................................................................................................................................19
Service tractor safely...................................................................................................................................19
Work in ventilated area................................................................................................................................20
Tractor runaway...........................................................................................................................................20
Safety starter switch....................................................................................................................................20
Safe operation of your tractor......................................................................................................................21
Safety Tips During Maintenance .................................................................................................................21
Mounting and demounting implements .......................................................................................................22
The following precautions are suggested to help prevent accidents ..........................................................23
Diesel fuel....................................................................................................................................................25
DO'S AND DON'T'S.....................................................................................................................................26
DO'S-for better performance.......................................................................................................................26
Don'ts - for safe operation ..........................................................................................................................27
General informations......................................................................................................................................29
Exterior view................................................................................................................................................29
Warning Symbols ........................................................................................................................................32
Tractor controls..............................................................................................................................................37
Instruments and Switches ...........................................................................................................................37
Main Switch .................................................................................................................................................38
Tachometer..................................................................................................................................................39
Hour Meter...................................................................................................................................................39
Fuel Gauge..................................................................................................................................................39
Coolant Temperature Indicator Light...........................................................................................................40
Combined Switch.........................................................................................................................................41
Warning Lights Switch.................................................................................................................................41
Indicator Lights............................................................................................................................................42
PTO ON / OFF Switch.................................................................................................................................45
Cruise Control Switch..................................................................................................................................45
Controls Operation ......................................................................................................................................46
Throttle Lever ..............................................................................................................................................47
Brake Pedal.................................................................................................................................................47
Control Pedals.............................................................................................................................................48
Travel Speed...............................................................................................................................................48
Parking Brake Pedal....................................................................................................................................48
Reduced and Road Gears Shift Lever ........................................................................................................49
Differential lock pedal..................................................................................................................................50
Front Axle Drive Shift Lever (4WD).............................................................................................................51
Seat and Seat Belt.......................................................................................................................................52
Pto ...............................................................................................................................................................53
CONTENTS
3

Tips for using the steering wheel with power steering ................................................................................53
Implement Lifting Control System ...............................................................................................................54
Implement Lowering Speed Control Dial.....................................................................................................55
Cruise Control..............................................................................................................................................56
Mower deck .....................................................................................................................................................57
Preface ........................................................................................................................................................57
Help with Manual Use..................................................................................................................................57
Use of the Machine......................................................................................................................................57
Mower Deck.................................................................................................................................................58
Operation in General...................................................................................................................................59
Operation on the Slope................................................................................................................................60
Transport .....................................................................................................................................................60
Operation (1) ...............................................................................................................................................61
Operation (2) ...............................................................................................................................................62
Maintenance (1)...........................................................................................................................................63
Maintenance (2)...........................................................................................................................................64
Table of fillings change and service intervals..............................................................................................64
Safety Labels...............................................................................................................................................65
Information Labels.......................................................................................................................................66
Technical data of the middle mower deck...................................................................................................68
Lubrication...................................................................................................................................................70
Mower Deck Adjustment..............................................................................................................................71
Universal joint..............................................................................................................................................72
Rear Link .....................................................................................................................................................73
Front Link.....................................................................................................................................................73
Front Link Assembly....................................................................................................................................74
Mower Deck Settings...................................................................................................................................75
Link Settings................................................................................................................................................76
Front and Rear Cutting Height Adjustment .................................................................................................78
Left and Right Cutting Height Adjustment...................................................................................................79
Fasteners torque table (ISO).......................................................................................................................80
Parts Replacement......................................................................................................................................81
Blade Disassembly......................................................................................................................................81
Blade Installation.........................................................................................................................................81
Belt Replacement........................................................................................................................................82
Belt Replacement........................................................................................................................................82
Transmission ...............................................................................................................................................83
Operation.........................................................................................................................................................85
How to Start the Engine...............................................................................................................................85
Switching the Engine Off.............................................................................................................................85
Switching Off ...............................................................................................................................................85
Engine Idling................................................................................................................................................86
Engine Idling in General..............................................................................................................................86
Run-in..........................................................................................................................................................86
Driving Off, Shifting and Driving ..................................................................................................................87
Driving Off....................................................................................................................................................87
Parking.........................................................................................................................................................87
Driving on a Slope.......................................................................................................................................87
Driving Off on a Steep Slope.......................................................................................................................87
Tips for Driving on a Slope..........................................................................................................................88
Precautions when Entering / Exiting a Field................................................................................................88
Loading on Truck / Unloading......................................................................................................................88
Precautions when Driving on the Road.......................................................................................................89
Operation Check while Driving....................................................................................................................89
Engine Oil Pressure.....................................................................................................................................89
Coolant ........................................................................................................................................................89
Workflow..........................................................................................................................................................91
Maintenance....................................................................................................................................................93
Covers Opening...........................................................................................................................................93
Hood Opening .............................................................................................................................................93
Checked Items.............................................................................................................................................94
Checked Items.............................................................................................................................................94
Check and Change of Coolant....................................................................................................................95
CONTENTS
4

Check and Change of Engine Coolant........................................................................................................95
Cleaning the Radiator and Radiator Grilles.................................................................................................96
Oil Check and Replacement........................................................................................................................96
Engine Oil and Replacement.......................................................................................................................96
Transmission Fluid Check and Change ......................................................................................................98
Front Axle Oil Check and Change.............................................................................................................100
Filter and Element Replacement...............................................................................................................101
Transmission Fluid Filter Element Replacement.......................................................................................101
Cleaning the Transmission Fluid Dirt Trap................................................................................................101
Oil filter Element Replacement..................................................................................................................102
Fuel System...............................................................................................................................................103
Check and Cleaning of the Air Filter..........................................................................................................104
Vacuum Valve Cleaning............................................................................................................................104
Air Filter Cleaning......................................................................................................................................104
Air Filter Replacement...............................................................................................................................104
Lubrication Points......................................................................................................................................105
Lubricating Arm .........................................................................................................................................105
Hoses Check .............................................................................................................................................105
Electric System Check...............................................................................................................................105
Battery Check and Charging .....................................................................................................................105
Recharge...................................................................................................................................................106
Starting with an External Battery...............................................................................................................106
Electric Connection Check ........................................................................................................................107
Fuse Check and Replacement..................................................................................................................107
Fuse Box....................................................................................................................................................107
High Capacity Fuse (50 A) ........................................................................................................................108
Light Bulb Replacement ............................................................................................................................108
Check and Adjustment of Parts.................................................................................................................109
Check and Adjustment of Brake Pedal......................................................................................................109
Brake Pedal Play.......................................................................................................................................109
Check and Adjustment of the Fan Belt......................................................................................................110
Check of Fuel Hose (Main Fuel Filter).......................................................................................................110
Check of Air Filter Hose.............................................................................................................................111
Check of Radiator Hose ............................................................................................................................111
Tire Inflation Pressure ...............................................................................................................................112
Checks and Service...................................................................................................................................113
General Information...................................................................................................................................113
Periodical Check and Service Table .........................................................................................................114
Fuel, oil and fluid specification diagram. ...................................................................................................115
Recommended ZETOR service fillings .....................................................................................................116
Storage and disposal ...................................................................................................................................117
Tractor Storage..........................................................................................................................................117
Short-term Storage....................................................................................................................................117
Long-term Storage.....................................................................................................................................117
Use after a Long Downtime.......................................................................................................................118
Use and Disposal ......................................................................................................................................118
Troubleshooting ...........................................................................................................................................119
Engine Faults.............................................................................................................................................119
Engine Faults.............................................................................................................................................120
Engine Faults.............................................................................................................................................121
Brake system faults...................................................................................................................................122
Steering system faults...............................................................................................................................122
Hydraulic system faults..............................................................................................................................123
Electrical system faults..............................................................................................................................124
Appendix .......................................................................................................................................................125
Index...............................................................................................................................................................129
CONTENTS
5

6

The engine number is stamped on the left hand side of the engine block.
The chassis number is stamped on the left hand side of the machine, see the picture.
PHTN001
1- Position of the stamped engine number and engine type
2- Position of the stamped chassis number
Product Warranty
The manufacturer provides the warranty for this product. The warranty terms are set out in a separate
document.
After-Sales Service
The objective of ZETOR TRACTORS a.s. company is complete customer satisfaction with the purchased
product.
Any problems with your machine will be solved by your dealer / distributor service department.
Service
Service is available from any ZETOR TRACTORS a.s. dealer in the relevant area.
Spare Parts
To obtain spare parts, contact your nearest dealer and provide the following information:
Tractor model
Tractor serial number
Tractor engine number
Part number and description
Quantity required
LOCATION OF SERIAL NUMBERS
7

NOTES
8

This manual has been prepared to assist you in following / adopting the correct procedure for running-in
operation and maintenance of your new ZETOR Tractor.
Your tractor has been designed and built to provide maximum performance, low fuel consumption and ease
of use. To maintain the condition and ensure trouble-free performance, it is important that maintenance is
performed at the recommended intervals as described in this manual.
Read this Manual carefully and keep it in a convenient place for future reference.
If at any time you require advice concerning your Tractor, do not hesitate to contact your Authorized ZETOR
dealer / Distributor. He has trained personnel, genuine parts and necessary equipments to undertake all your
service requirements.
All data given in this book is subject to production variations. Dimensions & weight are approximate only and
the illustrations do not necessarily show Tractors in standard condition.
For exact information about an
y
p
articular Tractor,
p
lease consult
y
our ZETOR dealer / Distributor
.
ABOUT THIS MANUAL
9


NOTES
10

Roll-Over Protection Structure (ROPS)
Zetor tractors are equipped with a frame to protect the operator.
On tractors with a cab, this frame is built into the cab structure.
The objective of the frame or the cab design is to protect the operator in the event of rolling over, they are
designed to support the full weight of the tractor.
Each ROPS or cab structure, as well as any mounting brackets and screws or other fasteners, have been
designed and tested to meet safety and government standards.
Danger
For the ROPS frames to effectively protect the tractor operator, the operator in the driver's seat
must be wearing a seat belt. This will keep the driver inside the ROPS-protected area in the event of
a rollover. Failure to use the seat belt can result in serious injury or death.
Some models of the ROPS frame can be folded, which can be used when entering low buildings, etc.
Be careful when lowering the top part of the ROPS and be very careful when driving with the ROPS lowered.
Do not use the seat belt with the ROPS lowered and remember that the folding mechanism is intended for
special use only and not for daily routine operation.
Using a tractor with the ROPS folded can cause serious injuries.
Since the ROPS frame or ROPS cab, together with the seat belt, have been designed to meet safety
standards, they must be maintained in good order and in good condition.
For maximum safety, both the frame and seat belt must be regularly inspected (whenever the tractor is
serviced).
If the seat belt is damaged or frayed, it must be replaced and if the ROPS frame or any part of its mounting
structure is damaged or cracked, the defective part must be replaced by a new one.
Such a part must meet all test criteria of the original set.
The use of poor quality component(s) affects the certification of the entire ROPS and the effectiveness of the
structure in the event of an accident.
Drilling or welding or making any unprofessional modifications of ROPS is prohibited.
ROPS (ROLL OVER PROTECTION STRUCTURES)
11

ROPS damage
If the tractor has rolled over or the ROPS has been damaged (for example, by hitting a low overhead object
or during transport), the ROPS must be replaced to provide the guaranteed protection.
After an accident, check for damage on:
1. ROPS.
2. Seats
3. Seat belt and seat mountings.
Replace any damaged parts before operating the tractor.
CCL25003
Do not weld, drill or straighten the ROPS.
Warning: Never attach chains or ropes to the ROPS for towing; it will cause the tractor to roll
over. Always use the points specified on the tractor for towing. Be careful when driving through open
doors or under low overhead objects. Ensure sufficient overhead clearance for ROPS to avoid fatal
injuries.
Warning: When removing or replacing the ROPS, ensure that the correct fasteners are used to
replace the ROPS and that the fastening bolts are tightened to the recommended torque values.
Warning: If the tractor is equipped with ROPS, always use the seat belt.
ROPS (ROLL OVER PROTECTION STRUCTURES)
12

Sliding Seat
How to adjust the seat
Before operating the tractor, it is important to adjust the seat to the most comfortable position and ensure
that it is properly locked in its position.
CCL25004
1- Seat Belt
2- Forward / Reverse Position Adjustment Lever
Warning: Do not place your hand between the seat and the guide rail when adjusting the seat.
You may be injured.
To select the seat position, move the adjustment lever and move the seat closer or further away from the
instrument panel and controls.
Danger: Check that the seat is properly locked in its position before driving the tractor.
Danger: Always use the seat belt when the ROPS is installed/lifted. Do not use the seat belt if
the ROPS is folded down or not installed. Check the seat belt regularly and replace it if it is frayed or
damaged.
NOTE:
Do not use solvents to clean the seat. Use warm water and add a little of deter
g
ent to it
.
ROPS (ROLL OVER PROTECTION STRUCTURES)
13


NOTES
14

Introduction to safety informatio
n
This symbol means ATTENTION! YOUR SAFETY IS INVOLVED. The message that follows the
symbol contains important information about safety. Carefully read the message.
Signal words
Danger
Warning
Caution
A signal word - DANGER, WARNING OR CAUTION - is used with safety alert symbol. DANGER identifies
the most serious hazards. Safety signs with signal Word - DANGER OR WARNING - are typically near
specific hazards. General precautions are listed on CAUTION safety signs.
Introduction to safety instructions Introduction to safety instructions
Protection children
Carefully read all safety instructions given in this manual
for your safety. Tempering with any of the safety devices
can cause serious injuries or death. Keep all safety signs
in good condition.
Replace missing or damaged safety sings.
Keep your tractor in proper condition and do not allow any
unauthorized modifications to be carried out on the tractor,
which may impair the function/safety and affect tractor life
.
U18N134
When using the tractor, prevent other persons from
accessing the tractor.
Reverse travel
- Look around if someone is not behind the tractor.
- Do not allow anyone to ride on the tractor or implement.
U18N135
SAFETY INSTRUCTIONS
15

Use of rops and seat belt
Precaution to avoid tipping
Safe parking of the tractor
Keep riders off tractor
The Roll Over Protective Structure (ROPS) has been
certified to industry and/or government standards. Any
damage or alternation to the ROPS, mounting hard-ware,
or seat belt voids the certification and will reduce or
eliminate protection for the operator in the event of a roll-
over. The ROPS, mounting hardware, and seat belt
should be checked after the first 100 hours of tractor and
every 500 hours thereafter for any evidence of damage,
wear or cracks. In the event of damage or alternation, the
ROPS must be replaced prior to further operation of the
tractor.
The seat belt must be worn during machine operation
when the machine is equipped with a certified ROPS
.
Failure to do so will reduce or eliminate protection for the
o
p
erator in the event of a roll over
.
U18N136
Do not drive where the tractor could slip or tip.
Stay alert for holes and rocks in the terrain, and other
hidden hazards.
Slow down before you make a sharp turn.
Driving forward out of a ditch or mired condition could
cause tractor to tip over backward. Back out of these
situations if possible.
U18N137
Before working on the tractor:
Lower all equipment to the ground.
Stop the engine and remove the key.
U18N138
Do not allow other persons to ride on the tractor besides
the operator.
Persons on the tractor are exposed to the risk of injury,
e.g. due to the impact of a foreign object or falling from the
tractor.
U18N139
SAFETY INSTRUCTIONS
16

Handle fuel safel
y
-avoid fires
Stay clear of rotating shafts
Always use safety lights and devices
Handle fuel with care; it is highly flammable. Do not refuel
the tractor while smoking or near open flame or sparks.
Always stop engine before refueling tractors.
Always keep your tractor clean of accumulated grease,
and debris. Always clean up spilled fuel.
U18N140
Entanglement in rotating shaft can cause serious injury or
death.
Keep PTO shield in place at all times.
Wear close fitting clothing. Stop the engine and be sure
PTO drive is stopped before making adjustments,
connections, or cleaning out PTO driven equipment.
U18N141
Use of hazard warning lights and turn signals are
recommended when towing equipment on public roads
unless prohibited by state or local regulations.
Use slow moving vehicle (SMV) sign when driving on
public road during both day & night time, unless prohibited
by low.
U18N142
SAFETY INSTRUCTIONS
17

Practice safe maintenance
Avoid high-pressure fluids
Prevent battery explosions
Be thoroughly familiar with the service procedure before
performing work.
Keep the tractor area clean and dry.
Do not attempt to service the tractor while it is in motion.
Be careful not to let your body or clothing get into the
rotating shaft.
Always lower all attached equipment on the ground. Turn
off the engine.
Remove the ignition key. Let the tractor cool down before
any repairs.
All parts of the tractor that need to be lifted for service
work must be securely supported.
Keep all parts in good conditions and properly installed.
Replace worn or damaged parts. Replace
damaged/missing plates.
Remove any accumulated excess grease or oil from the
tractor.
Disconnect the battery ground cable (-) before making
adjustments to electrical systems or performing welding
work on the tractor
.
U18N143
Liquid escaping under pressure can penetrate the skin
and cause serious injury. Be especially careful when
handling the injection elements - there is a risk of injecting
liquids under high pressure under the skin of your hands
or other parts of your body. If ANY liquid penetrates the
skin, contact your doctor immediately.
U18N144
Keep sparks, lighted matches, and open flame away from
the top of battery. Battery gas can explode. Never check
battery charge by placing a metal object across the poles.
U18N145
SAFETY INSTRUCTIONS
18

Prevent acid burns
1. When working with your tractors electrical components you must first disconnect the battery cables.
2. To ensure that there are no accidents from sparks you must first disconnect the negative battery
cable.
Service tractor safely
Protect the top of the battery from sparks, flammable
materials and open flames. Accumulated battery fumes
can explode. Never check the battery charge by
connecting the battery terminals with a metal object.
Sulfuric acid in the battery electrolyte is hazardous to
health. It is strong enough to burn the skin, burn through
the clothing and cause blindness when it gets into the
eyes.
To ensure adequate safety, always:
1. Refill the batteries in a well-ventilated place.
2. Wear eye protection and acid-resistant gloves.
3. Do not inhale the released vapors after the
electrolyte has been added.
4. Do not add water to the electrolyte, as it may cause
expansion and subsequent severe burns.
If you get stained with acid:
1. Rinse skin with water.
2. Rinse eyes with water for 10 - 15 minutes. Seek
medical advice immediately.
U18N146
Battery disconnect
UCL18N007
Do not wear a tie, scarf or any other loose clothing when
working near moving parts. If any of these garments is
caught, a serious injury may occur.
Do not wear rings or other jewellery to avoid electrical
short circuits and entanglement in moving parts.
U18N147
SAFETY INSTRUCTIONS
19