Spearhead TRIDENT 400 Assembly instructions

8999139EN: v1.2 17/12/2020
1 Original instructions (ENGLISH)
Website: www.spearheadmachinery.com
Spearhead Machinery
Operator Instruction Manual For
4.0-6.0m cut width, 540/1000 PTO input

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IMPORTANT
Verification Of Warranty Registration
Dealer Warranty Information & Registration Verification
It is imperative that the selling dealer registers this machine with Spearhead before delivery to the end user.
Failure to do so may affect the validity of the machine warranty.
To register machines go to the Spearhead Machinery Limited web site at:
https://my.spearheadmachinery.com/warranty/machine-registration/
Should you experience any problems registering a machine in this manner please contact the Spearhead
Service Department on 01789 491867.
Confirm to the customer that the machine has been registered in the section below.
Registration Verification
Model Type:
Trident
Model Number:
9____________
Serial Numbers:
Machine:
S__________
Cutting Implement:
S__________
Other:
Name Of Owner:
Name Of Installing Dealer:
Dealer Address:
Dealer Signature:
Date Of Delivery / Installation:
Date Of Warranty Registration:
IMPORTANT
At the point of transfer of ownership record the above information. Note the serial number of your machine and
always quote it in any communication with us or your dealer. (The serial number plate is located on the machine
mainframe.) This is particularly important when ordering spares. Remember to include all numbers and letters.
The information given throughout this manual is correct at the time of publication. However, in the course of
constant development of Spearhead machines, changes in specification are inevitable. Should you find the
information given in this book to be at variance with the machine in your possession, you are advised to contact
the Spearhead Service department where up-to-date information will be provided.
The manual can contain standard and optional features and is not to be used as a machine specification.
The machine has been tested and is considered safe if carefully used. Ensure your operator is properly trained
in its use and maintenance.

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Trident Series Flail Mower
This manual covers the Trident series of folding flail mowers which are available in 4.0m, 5.0m and 6.0m cut
widths.
4.0m and 5.0m Trident machines can be optioned to be trailed from the rear of the tractor or mounted front
or rear via the tractors three-point linkage. 6.0m Trident machines can only be optioned to be mounted on
the front or rear of the tractor via the tractors three-point linkage.
They are all fitted with hydraulic rams which provide a folding ability making the machine legal for road
transportation.
These trailed medium-duty machines can be specified with various specifications to suit the end users
specific requirements.
These machines are fitted with 540 rpm as standard; 1000 rpm optional.
It is essential that the safety guards (including the rear roller) are always fitted during operation and that the
machine is operated in line with the procedures and practices detailed in this manual.
IMPORTANT
This operator’s manual should be regarded as part of the machine. Suppliers of both new and second-hand
machines are advised to retain documentary evidence that this manual was provided with the machine.
This machine is designed solely for ground vegetation control and must not be used for any other purpose.
Use in any other way is considered as contrary to the intended use. Compliance with, and strict adherence to,
the conditions of operation, service, and repair, as specified by the manufacturer, also constitute essential
elements of the intended use.
This machine should be operated, serviced, and repaired only by persons who are familiar with its
characteristics and who are acquainted with the relevant safety procedures.
Accident prevention regulations, all other generally recognised regulations on safety and occupational
medicine, and all road traffic regulations must always be observed.
Any arbitrary modifications carried out to this machine may relieve the manufacturer of liability for any resulting
damage or injury.
It is potentially hazardous to fit or use any parts other than genuine Spearhead parts.
The company disclaims all liability for the consequences of such use which, in addition, voids the machine
warranty.

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Contents List
1Machine Description.............................................................................................................................10
1.1 Intended Usage.......................................................................................................................10
1.1.1 Allowed Uses.............................................................................................................10
1.1.2 Improper Uses...........................................................................................................10
1.2 General Arrangement .............................................................................................................11
1.2.1 Trident Trailed............................................................................................................12
1.2.2 Trident Mounted ........................................................................................................13
1.3 Machine Identification .............................................................................................................14
1.4 Rotation Definitions & Conventions........................................................................................15
1.5 Machine Specification.............................................................................................................16
1.5.1 Standard Specification...............................................................................................16
1.5.2 Machine Options........................................................................................................18
2Safety....................................................................................................................................................22
2.1 Level Of Danger......................................................................................................................22
2.2 Terminology.............................................................................................................................22
2.3 Safe Use..................................................................................................................................23
2.3.1 Operators Manual......................................................................................................23
2.3.2 Personnel Preparation...............................................................................................23
2.3.3 Tractor and Machine Preparation For Work .............................................................23
2.3.4 Work Site Preparation...............................................................................................26
2.3.5 Machine At Work & Observation...............................................................................27
2.3.6 Transporting The Machine........................................................................................29
2.3.7 Machine Storage .......................................................................................................30
2.4 Safe Maintenance...................................................................................................................31
2.5 Safety & Operational Decals...................................................................................................34
2.5.1 Definitions..................................................................................................................34
2.5.2 Placement..................................................................................................................36
2.5.3 Replacement .............................................................................................................36
2.6 Guards.....................................................................................................................................37
2.6.1 Mandatory Guards.....................................................................................................37
2.7 Sound......................................................................................................................................37
2.8 Personal Protective Equipment ..............................................................................................38
2.9 The Machine & The Environment...........................................................................................38
2.9.1 Disposal.....................................................................................................................38
2.10 Proposition 65 .........................................................................................................................39
3Machine Preparation.............................................................................................................................40
3.1 Lifting The Machine.................................................................................................................40
3.2 Post-delivery/First Use Inspection..........................................................................................41
3.2.1 Tractor Inspection......................................................................................................41
3.2.2 Machine Adjustment..................................................................................................41
3.3 PTO Shaft................................................................................................................................42
3.3.1 PTO Setup & Adjustment (first use)..........................................................................42
3.3.2 Bottoming Out Test....................................................................................................43
3.3.3 Engagement Test......................................................................................................43
3.3.4 Modifying & Shortening The Input PTO Shaft...........................................................44
3.3.5 Fitting The PTO Shaft................................................................................................46
3.4 Wheels & Tyre Installation (trailed version only) ....................................................................46
4Usage Instruction..................................................................................................................................48
4.1 Operator Requirements ..........................................................................................................48
4.2 Tractor Requirements.............................................................................................................49
4.3 Connecting & Disconnecting Hydraulic Hoses & Electric Cables..........................................50
4.4 Hitching & Unhitching The Machine........................................................................................51
4.4.1 Mounted.....................................................................................................................51
4.4.2 Trailed........................................................................................................................53
4.4.3 Safety Towing Chain (trailed version only) ...............................................................55
4.5 PTO Shaft................................................................................................................................56
4.5.1 Fitting & Removal Of The Input PTO Shaft...............................................................56
4.5.2 PTO Shaft Specifications ..........................................................................................59
4.6 Unfolding & Folding The Machine...........................................................................................60
4.7 Setting Up The Machine.........................................................................................................61

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4.7.1 Wing Cowls................................................................................................................62
4.7.2 Front and Rear Cowl.................................................................................................63
4.8 Setting Cutting Height.............................................................................................................64
4.9 Work Site Assessment............................................................................................................67
4.9.1 Foreign Debris Hazards ............................................................................................67
4.9.2 Stopping The Machine In An Emergency.................................................................67
4.9.3 Bystanders.................................................................................................................68
4.9.4 Weather.....................................................................................................................68
4.9.5 Fire.............................................................................................................................68
4.10 Safe Driving Practices.............................................................................................................69
4.11 Using The Machine.................................................................................................................70
4.11.1 Engaging The Power Take-off (PTO).......................................................................70
4.11.2 Disengaging the Power Take-off (PTO)....................................................................71
4.11.3 Forward & Power Take-off Speed.............................................................................71
4.11.4 Cornering...................................................................................................................72
4.11.5 Crossing Ditches & Steep Inclines............................................................................72
4.12 Road Transporting The Machine............................................................................................73
4.13 Transporting The Machine On A Trailer.................................................................................74
5Maintenance .........................................................................................................................................76
5.1 Periodic Maintenance..............................................................................................................76
5.2 Lubrication & Greasing............................................................................................................76
5.2.1 Gearboxes.................................................................................................................76
5.2.2 PTO Shaft..................................................................................................................78
5.2.3 General Machine Greasing Point Locations.............................................................81
5.2.4 Greasing Schedule....................................................................................................82
5.3 PTO Shaft................................................................................................................................82
5.3.1 Size Adjustment & Fitting To The Tractor.................................................................82
5.3.2 Greasing....................................................................................................................82
5.3.3 Input PTO Shaft - Bearing Ring Replacement..........................................................83
5.3.4 Wing & Front/Rear Cowl PTO Shaft - Bearing Ring Replacement..........................87
5.4 Belts.........................................................................................................................................89
5.4.1 Using A Belt Tension Gauge.....................................................................................89
5.4.2 Primary Drive - Checking Tension............................................................................90
5.4.3 Primary Drive - Adjusting Belt Tension.....................................................................91
5.4.4 Primary Drive –Replacing Belts ...............................................................................92
5.4.5 Secondary Drive - Checking Tension .......................................................................93
5.4.6 Secondary Drive - Adjusting Belt Tension ................................................................95
5.4.7 Secondary Drive –Replacing Belts ..........................................................................96
5.5 Flails & Rotor...........................................................................................................................97
5.5.1 Flail Options...............................................................................................................97
5.5.2 Flail Inspection...........................................................................................................98
5.5.3 Rotor Inspection ........................................................................................................99
5.5.4 Flail Bolt Inspection..................................................................................................100
5.6 Hydraulic Components..........................................................................................................101
5.6.1 Ram Inspection........................................................................................................101
5.6.2 Wing Ram Replacement.........................................................................................102
5.6.3 Front/Rear Cowl Lift Ram Replacement.................................................................104
5.6.4 Hoses.......................................................................................................................106
5.6.5 Machine Hose Diagrams.........................................................................................107
5.7 Wheels, Hubs & Tyres (trailed version only) ........................................................................108
5.7.1 Tyre Pressures........................................................................................................109
5.7.2 Hub Greasing ..........................................................................................................109
5.7.3 Maximum Road Operating Speed...........................................................................109
5.8 Other Key Components........................................................................................................110
5.8.1 Pins & Bushes.........................................................................................................110
5.8.2 Skids........................................................................................................................110
5.9 Torque Settings.....................................................................................................................111
5.9.1 Nuts & Bolts.............................................................................................................111
5.9.2 Hydraulic Fittings.....................................................................................................112
5.10 Machine Inspection Record..................................................................................................114
5.11 Machine Storage...................................................................................................................116
5.11.1 Preparing The Machine For Storage.......................................................................116

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5.11.2 Returning The Machine Back To Work...................................................................117
6Troubleshooting..................................................................................................................................118
7Spare Parts.........................................................................................................................................120
7.1 How To Obtain The Correct Spare Part Numbers...............................................................120
7.2 Spare Parts Ordering............................................................................................................121
7.3 Dealer Network .....................................................................................................................121

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1 Machine Description
1.1 Intended Usage
1.1.1 Allowed Uses
The Trident series of flail mowers are ideal for matching to compact tractors and excels in parkland, amenity
mowing, golf course, orchard and paddock topping applications.
They are designed for use on level, undulating or inclined ground and for a duty cycle of 1000 hours per
annum. They will cut vegetation up to 20mm thickness.
Trailed Trident machines require an agricultural tractor with a minimum of 80hp (Trident 400) and 90hp
(Trident 500).
Mounted Trident machines require the same minimum power requirement each; however also require a
tractor with a minimum weight of 7000kg/15432 lbs.
1.1.2 Improper Uses
DANGER! Spearhead declines any and all liability for damages caused by the machine to persons,
animals or property, resulting from use in any other way than described in this manual, or due to
damage caused by negligence or by not observing the instructions contained in this manual.
The machine, due to its typical construction, may also be suitable for uses other than from those foreseen by
the manufacturer. For this reason Spearhead has selected, as non-exhaustive examples, a series of
improper uses that can be reasonably foreseen, which are:
•Using the machine for hedge cutting.
•Using the machine for stubble mulching purposes.
The uses listed above and those not specifically indicated in this manual, including reasonably foreseeable
improper uses, are definitively prohibited.
Figure 1.1 Spearhead Trident
(Trailed 400 model illustrated)

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1.2 General Arrangement
The layout and naming convention used throughout this manual for each of the machines are shown in the table
below. The numbering and positioning of the relevant item can be found for the particular machine in Section
1.2.1 for trailed Trident machines and Section 1.2.2 for mounted Trident machines.
Item No.
Description
Item No.
Description.
1
Centre Chassis
21
Wing PTO Shaft
2
PTO Support Bracket
22
Wing Retention Strap
3
Left-hand Wing Cowl
23
Wing Ram
4
Right-hand Wing Cowl
24
Front/Rear Cowl Gearbox
5
Front/Rear Cowl
25
Rotor Pulley
6
Drawbar
26
Rotor Belt
7
Headstock
27
Jack
8
Driveshaft Guard
28
Towing Eye Wear Pad
9
Belt Guard
29
Input Pulley
10
Left-hand Wing Arm
30
Output Pulley
11
Right-hand Wing Arm
31
PTO Cone
12
Rear Flap
32
Drawbar Threaded Link
13
Rear Roller
33
Adjustable Top Link
14
Wing Cowl Mount Bracket
34
Front/Rear Cowl Lift Ram
15
Front/Rear Cowl Headstock
35
Hydraulic Hose Guide
16
Rotor Shaft
36
Front/Rear Lower Linkage
17
Flail
37
Gearbox
18
Skid
38
Documents Tube
19
Light
39
Wing Driveshaft
20
Input PTO Shaft
40
Rear Cowl Cross-shaft
Table 1.1 –Trident Machine Components

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1.2.1 Trident Trailed
Figure 1.2 –Trident Trailed General Arrangement
(Trailed 400 model illustrated)

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1.2.2 Trident Mounted
Figure 1.3 –Trident Mounted General Arrangement
(Front Mount 600 model illustrated)

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1.3 Machine Identification
Each machine is equipped with a serial plate; see Figure 1.4 that includes the following data in this order:
1. UKCA Conformity Marking.
2. Machine Whole Goods Code (WGC).
3. Serial number of the machine.
4. Mass in kg.
5. Production Year (year of construction).
6. Design conformity standard.
7. Machine Product Group Code.
8. EU Authorised Representative QR scan code.
9. Manufacturer marking with name and address.
10. EAC Eurasian/Russian Conformity Marking.
11. EC European Conformity Marking.
Figure 1.4 –Serial Plate
Data on the Spearhead manufacturer’s plate should always be referred to when requesting assistance and/or
requiring replacement spare parts.
This data can identify the machine and its characteristics and specification for its particular time of manufacture,
certifying that it responds to current regulations. For this reason the plate should never therefore be removed nor
be used for other purposes; if the machine is dismantled, it should be destroyed to prevent any form of abuse.
By utilising a smart phone and scanning the Authorised Representative QR scan code found on the right-hand
side of the serial plate (ref 8, Figure 1.4) using a suitable QR scanning App, you can find details for Spearhead
Machinery authorised representatives for its various territories.
The serial plate is located near the front of the machine, by either the three-point linkage or drawbar. There is a
secondary serial plate on the front/rear cowl (dependant on machine specification); see Figure 1.5.
Trailed Trident
Mounted Trident
(Trailed 400 model illustrated)
(Front Mount 600 model illustrated)
Figure 1.5 –Serial Plate Location

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1.4 Rotation Definitions & Conventions
This instruction manual refers to relative rotational directions. The terms clockwise and anti-clockwise are
defined by looking at the machine from right-hand size, with the tractor being at the right; see Figure 1.6. To
eliminate confusion the following definitions will be used throughout this operator’s manual.
In order to create a consistent and quality cut and through-flow of material through and out of the machine,
Trident machines have anti-clockwise flail cutting rotors.
Figure 1.6 –Trident Rotor Shaft Rotation Directions
(Trailed 400 model illustrated)
Additionally, other references to ‘clockwise’ and ‘anti-clockwise’ actions by the operator conform to international
right-hand thread conventions for ‘screw down’ and ‘un-screw’ respectively.
This convention also extends to the definition of PTO drive rotation from the prime mover, see Figure 1.7.
Figure 1.7 –Tractor PTO Shaft Rotation Definitions

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1.5 Machine Specification
1.5.1 Standard Specification
Trident
Trailed
Mounted
400
500
400
500
600
Tractor
Recommended
Minimum Tractor HP
80hp/60kW
90hp/68kW
80hp/60kW
90hp/68kW
120hp/90kW
PTO
Speed
540rpm
Size
1” 3/8 input and output
Protection
Slip clutch and overrun
Machine
(1) (2)
Mass
1850kg
(4079lbs)
2200kg
(4851lbs)
T.B.C.
T.B.C
2250kg
(4961lbs)
Hitch
Multi-positional Drawbar
Three-point Linkage
Cutting Width (A)
4.37m
(14’ 4”)
5.12m
(16’ 9”)
4.37m
(14’ 4”)
5.12m
(16’ 9”)
6.11m
(20’)
Working Width (B)
4.76m
(15’ 8”)
5.52m
(18’ 2”)
4.76m
(15’ 8”)
5.52m
(18’ 2”)
6.51m
(21’ 5”)
Working Length (C)
3.66m (12’)
2.31m (7’ 7”)
Transport Width (D)
2.59m (8’ 6”)
2.48m (8’ 2”)
Transport Length (E)
3.63m (11’ 11”)
2.29m (7’ 7”)
Transport Height (F)
2.88m
(9’ 6”)
3.32m
(10’ 11”)
2.69m
(8’ 10”)
3.07m
(10’ 1”)
3.38m
(11’ 2”)
Cowl Height
(top to skid)
0.81m (2’ 8”)
Wing Working Angles
45° up/15° down
Wheels
2
N/A
Gearbox
Lubricant
EP80-90W or GL-4/GL-5
Oil
Capacity
Centre
Chassis
(x2)
1.00l (1.76 pints)
Front/Rear
Cowl
1.00l (1.76 pints)
Flails
Twisted (quantity)
156
180
156
180
210
Tip Speed
49mps (9645 fpm)
Cutting
Capacity
Height
15-100mm (9/16”-4”)
Diameter
20mm (13/16”)
Driveline
Approval
ASAE Category 4
Protection
Slip clutch and overrun on input shaft. Belts on centre chassis and
cowls
Table 1.2 –Trident 400/500 (Trailed) & Trident 400/500/600 (Mounted) Specification
Notes: (1) Spearhead constantly reviews and improves product designs and reserve the right to change this
information. Actual machines may vary from the above specification. Contact your Spearhead
Sales representative if you have any queries.
(2) All dimensions are determined from computer models, so actual measurements may vary slightly.
The following machine figure guides for working dimensions (Figure 1.8), are illustrated using trailed and
mounted versions of the Trident 400.
The following machine figure guides for transport dimensions (Figure 1.9), are illustrated using trailed and
mounted versions of the Trident 400.

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Trailed
Mounted
(Trailed 400 model illustrated)
(Front Mount 400 model illustrated)
Figure 1.8 Working Dimensions
Trailed
Mounted
(Trailed 400 model illustrated)
(Front Mount 400 model illustrated)
Figure 1.9 Transport Dimensions

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1.5.2 Machine Options
Trident machines can be ordered in a variety of different specifications to fit the user’s requirements.
Option
Picture
Mainframe
Trailed
Front Mounted
Rear Mounted
Trident 400/500 only
Option
Picture
Front/Rear Cowl
1.80m
2.10m
Trident 400/500 only
Standard on Trident 600
Option
Picture
Tyres
Road
Turf
Option
Picture
Drawbar
Standard
Euro

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Option
Picture
Hydraulics
2 Spool
3 Spool
Option
Picture
Rear Roller
Standard
Domed Ends
Option
Picture
Flail
Twisted
Long Scoop
Option
Picture
Taps
2 Spool hydraulic system only

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Option
Picture
Gearbox
Engage
Disengage
Option
Picture
Input Speed
540rpm
1000rpm
Option
Picture
Rear Flaps