Christie Digital Systems Matrix Hd7 Users Specifications

							Matrix Series
Powerhouse Simulation Display Solutions 
Today’s simulation environments are more demanding than ever before.
With extreme specifications including high contrast and brightness and the
need to project onto a variety of screen shapes and sizes . . . each system is
unique. The Christie Matrix Series is purposebuilt to handle even the most
challenging of today’s simulation display requirements.
Offering the highest resolution and the highest contrast ratios, the Christie
Matrix Series is based on DLP
®technology and offers a range of 2500 
to 7000 ANSI lumens. Our SuperCRTMtechnology provides contrast ratios 
up to 5000:1 allowing for low black levels for incredibly accurate night
scene images. Combined with the highest color uniformity and features
such as ChristieTWIS
T
TMimage warping and edgeblending, RGB color
matching, full control of gamma curves and grayscale tracking, high input
bandwidth and less than one frame of propagation delay, the Matrix Series
is suited to many applications and is also an ideal CRT replacement solution.
Recreate reality with the Christie Matrix Series.
Uses
Flight simulation
Vehicle operation
Ship bridge simulation
Homeland security/
operations training
Air traffic control simulation
Heavy machinerysimulation
Architecture, engineering
andconstruction     
						

							Matrix Series
Display Technology
Featuring highquality DLP®technology and
true SXGA+(1400 x 1050) and full HD (1920 x
1080)  resolutions, the Christie Matrix Series is
highly reliable and will accept signals from
VGA to QXGA (2048 x 1536) 
resolution.DLP®
technologydelivers high brightness and
unsurpassedcolor,brightness uniformity and
control capabilities. As well, this proven digital
technology is low maintenance and completely
compatible with 4:3, 5:4 and 16:9 content. 
Image Quality
The Matrix S+5K and all Matrix HD projectors
are driven by Xenon illumination and deliver
superior image quality and the ability to color
match multiple projectors for extremely bright,
color rich, uniformimages – whether multiple
projectors on a single screen, or multiple tiled
screen displays. The Matrix 3000 features dual
Osram PVIP
®lamps for increased brightness,
reliability and costeffective operation. The Matrix
S
+2K, Matrix S+5K and ALL Matrix HD models
utilize a Color Purity Filter (CPFTM)to enable
superior color saturation, color matching and
superior black levels for unsurpassed day and
night scene blending. 
Image Processing
With 10bit image processing, the Christie
Matrix Series offers high bandwidth signal
processing for excellent reproduction of the
source without motion artifacts and smearing.
For added ease of blending in tiled applications,Digital Black Level Adjustment lets the user
match the blended (gutter) black levels with
the nonblended black levels.
Ease of Use
A userfriendly Graphic User Interface (GUI)
makes operation and setup of the entire
Christie Matrix Series uncomplicated. The GUI
enables full and easy control of the projector.
Multiple control options let the user choose
what’s best for their application – builtin, IR
and wired remote keypad; RS422 or RS232
control; or through ChristieNET
TMvia an
Ethernet port. Motorized lens functions
provide power focus, zoom, horizontal and
vertical offset – all at the touch of a button.
Auto setup recognizes sources and sets up
correct brightness, contrast and position.
Serviceability
Operation and maintenance of the Christie
Matrix Series is easy as well with lower power
consumption, fewer lamp changes and less
downtime. Fieldalignable DMDs and a
cleanable optical engine put full control in the
hands of the user.Replacement lamp costs 
are low and Christie offers the best warranties
on the market – 2 years parts and labor
(excluding lamp).
The Canadian Marine Institute (CMI) is
part of the Memorial University of
Newfoundland, and is Canada’s foremost
fisheries and marine training facility.
Established in 1964, the complex is used
extensively for training a variety of
scenarios ranging from applications based
around navigating the Atlantic Ocean at
various times of the day (both full daylight
and nighttime scenarios), as well as
difficult winter and Arctic environments.The Christie TotalVIEW™ solution
operated by CMI is a Full Mission Bridge
Simulator (FMB) comprised of a full 360˚
fieldofview screen that is 24 tall, with
the ship bridge being mounted on a full
motion platform. The upgraded display
now produces almost 15 million pixels,
and is powered by Christie Matrix Series
projectors – the world’s leading purpose
built DLP
®simulation projection technology.
The TotalVIEW™ solution also features
ChristieTWIST™ – a stateoftheart edge
blending and image warping technology.
A Breakthrough In Simulation
For 3Chip DLP®Projectors
As a new firmwarefeature update for Matrix
Matrix S+5K and Matrix HD Series DLP®
simulation projectors.
•Developed specifically to address the simulation 
market, this feature enables the removal  of any 
perceived “double imaging” of content due to 
image frame perception in the eye.
• Our Matrix line offers an industry first with 
accurate frame display for NONCRT projectors 
that has been able to nullify the artifact to the 
eye of smearing or double image perception 
for use in fast simulation environments.
•Can be considered to reduce latency when 
compared to the current Simulation line (one 
frame plus as few as 1020 lines for warping 
if required).
•AccuFrame
™technology is being added as a 
free firmware upgrade to all current and 
futurethree chip models.
• Fully adjustable to support various frame 
rates and environments.
AccuFrame™     
						

							Benefits
•Purposebuilt for simulation environments
•Optimized for complex arrays where color matching is very critical 
•Matrix S
+2K and Matrix S+5K can be used on motion platform simulation systems
• Small, compact designs
The Christie Matrix Series features userreplaceable
lamp modules with adjustable lamp power for
lower brightness. The stable color temperature 
over the course of the lamp life and the power
range provides the best lamp technology for color
matching across multiple screens.The Christie Matrix Series features an
extremely high SuperCRTMratio of up to
5000:1 full field – with the motorized IRIS,
users can adjust for high contrast ratio and
better black levels, for any given application.
An optional suite of specificallydesigned lenses
includes both fixed and zoom lenses ranging from
0.67:1 to 7.5:1 zoom and features a durable lens
mount with motorized horizontal and vertical
offset. With quick lens insertion the Christie Matrix
Series is easy to work with.
Accessories
Standard:
•IR keypad (w/batteries)
• Power cord
•ChristieTWIST
TMimage warping module 
with enhanced edgeblending
•User manual
Optional:
•A large variety of fixed and zoom lenses 
available with throw ratios from 0.67:1 
to 7.3:1
•Matrix HD2, HD7 and Matrix S
+5K models have
two optional slots for analog/digital modules
•Remote control wired extension
•Remote IR sensor
•Ethernet, RS232, RS422 cables
•Service manual
•KoRE
TM10bit librarian
•Lens adapter (for competitive lenses)
The Christie Matrix Series features the widest 
source compatibility and has builtin Ethernet
networking for full compatibility with ChristieNET
TM
for total projector monitoring and control capabilities.
Inputs
The Christie Matrix Series offers installation flexibility and compatibility with any data, video or 
HDTV source in use today… from VGA to QXGA. The multistandard video decoder and horizontal 
and vertical scaling of all inputs gives you the ability to connect to virtually anything.
RGBHV/YPbPr via 5 BNC
DVII for digital/analog RGB/YPbPr (HDCP)
One composite video, one SVideo
Matrix HD2, HD7 and Matrix S+5K models have two optional slots for analog/digital modules
Two RS232 ports, one RS422 port and one GPIO port
OnboardChristieNET
TMconnectivity (RJ45)
Builtin backlit keypad and IR remote control         
						

							Image Warping and Enhanced Edgeblending 
withChristieTWISTTM
Designed with enduser applications in mind, ChristieTWISTTMprovides fingertip control 
to expertly edgeblend multiple nonlinear images on all four sides seamlessly. Images can be 
warped to fit any dimension or shape. And the multiple blend and warp properties can be stored onthe projector – providing easy access and immediate recall of settings.
For highquality,largerthanlife displays, the Primary Color Adjust (PCA
TM) and input/output gamma
correction produce exact color matching between displays. With an extremely fine level of control of the warping grid, users can map pixel locations precisely for absolute  geometric accuracy.
Warp to any shape or surface – curved or spherical screens and anything in between. ChristieTWIST
TM
features a userdefined warp grid and easytouse software with latency of less than one frame.
ChristieTWIST
TM–the ultimate in total image control.
ChristieTWISTTM
With blending and warping grids that are
completely userdefinable and offer an
extremely fine level of control, displays can
take on any shape or dimension required.
And the multiple warps and blend
properties can be stored on the projector 
or an external PC.
ChristieTWIST
TM





ChristieTWISTTMSoftware  Features Basic 1.0 Pro 1.0
Allows warping, blending and masking of projectors (standard on Matrix Series)
Allows up to a 10x10 warping grid
Blends are defined with a black and white curve pair for each edge 
(top, bottom, left, right)of the screen
Masks aredefined with a mask curve for each edge of the screen
Has a “Blend Calculation” feature that calculates the blend automatically from the current warp 
Contains online help and a printed manual. The PDF of the printed manual is installed and is included on the CD
Supports one projector at a time
Suppor
ts multiple projectors – can warp/blend/mask multiple projectors simultaneously
Allows an unlimited and arbitrarynumber of grid lines 
(up to and beyond a 10x10 warping grid)
Display control points and warp lines on projector – a test pattern that is generated in the projector that shows 
the warp grid and identifies the warp control points
Auto save to projector – periodically save workinprogress to the projector
Projector control – provides features normally available from projector menus 
(select test patterns, shutter projector, select input source, etc.)









Application displayed 
courtesy of Rockwell Collins     
						

							Digital Color Management
(DCMTM)
Only Christie offers a specially designed 
optical system with a very tight ± 5nm tolerance
for primary colors, making multichannel
adjustments between multiple projectors an 
easy task to accomplish.
Color Temperature 
Control (CTCTM)
Provides the flexibility of color temperature
adjustment with a range from 3200K – 9300K.
Comprehensive Color
Adjustment (CCATM)
Individually adjust actual RGB channels for 
even color matching within individual projectors
for perfectlymatched images.
LiteLOCTM
(Light Output Control)
Constant brightness tracking monitors lamp
output and automatically adjusts power to
ensure continual, uniform brightness.
Minimum Processing
Latency (MPLTM)
With less than a single frame of the
propagation delay between projector input
and display, the result is sharp, vibrant images
without loss of detail. Minimum delay between
input and projection display is critical to
simulate realtime interaction between trainee
and simulation imagery.
Lamp Power 
Management (LPMTM)
Provides users with the ability to adjust power 
to the lamps for a consistent and uniform
brightness, to monitor and manage the lamp
operation in the display.
SuperCRTMContrast Ratio
With the internal variable contrast aperture,
contrast ratios range from 15005000:1 for
vivid, dynamic image reproduction and low black
levels for accurate nightscenery mode.
Spatial Light Image
Construction (SLICTM)
Christiebuilt DLP®engines ensure highquality
convergence and registration between red,
green and blue DMDs.
Seamless Image 
Mapping (SIMTM)
Provides multichannel display with edge
blending on all four sides of the image
through proprietary software that can control
blend width from 48 to 464 pixels. Easy to
use, intuitive onscreen display menus can be
remotely controlled via RS232. Black levels 
can be further blended through external 
optomechanical blinders.
Color Purity Filter (CPFTM)
Astandard feature on the Christie Matrix S+2K,
S+5K and all Matrix HD the Color Purity Filter
(CPF™)enables superior color for both dark
scenes in night time simulation and bright scenes
in daytime simulation.
Christie’s Primary Color
Adjustment (PCATM) provides
the ability to individually
adjust actual RGB channels for
even color matching within
individual projectors,
producing true color
representation across multi
screen applications for a
completely blended image.
Matrix Series (cont’d)
PRIMARY COLOR ADJUSTMENT
(C olor Space Control )
No LiteLOCLiteLOC  TIME BRNatural Lamp Brightness
Lamp Power Constant Regulated Brightness       
						

							BRIGHTNESS•3000 (dual)/1500 (single) ANSI lumens (± 10%)•90% brightness uniformity (corrected)
CONTRAST•SuperCRTMcontrast – 15005000:1 full field•300:1 ANSI minimum
LAMP•Dual Osram PVIP®300 W•2000 hours (typical) lifetime•LiteLOCTM(Light Output Control)
POWER•100 – 240 VAC @ 50/60 Hz•Power consumption: 480 W (dual); 840W (single)•Thermal dissipation: 3210 BTU/hr•O
perating current: 8.4A @100V (dual); 3.4A @
2
00V (
dual); 4.8A @ 100V (single); 2A @ 200V
(
single)
DIMENSIONS (EXCLUDING LENS)•Weight: 36 lb (16 kg)•Shipping weight: 45 lb (20.4 kg)•Size (L x W x H): 14.7 x 20.1 x 10.1
(374 x 510 x 257 mm)
R
EGULATORY APPROVALS•UL/CSA/IEC 609501•FCC Class A•RoHS/WEEE compliant•CE, eK, CCC, PSE, MIC•EN55022; EN55024
BRIGHTNESS•4000 ANSI lumens (±10%)•90% brightness uniformity (corrected)•Color Purity Filter (CP FTM)
CONTRAST•SuperCRTMcontrast – 15002000:1 full field•450:1 ANSI minimum
LAMP•1.0 kW CERMAX®Xenon lamp module•1500 hours (typical) lifetime•LiteLOCTM(Light Output Control)
POWER•100 – 240 VAC @ 50/60 Hz•Power consumption: 1600 W maximum•Thermal dissipation: 5460 BTU/hr•Operating current: 10.4A @100V/8A @200V
DIMENSIONS (EXCLUDINGLENS)•Weight: 75 lb (34 kg)•Shipping weight: 120 lb (54.4 kg)•Size (L x W x H): 22.3 x 26.0 x 12.3
(566 x 660 x 313 mm)
REGULATORY APPROVALS•UL/CSA/IEC 609501•FCC Class A, CCC•RoHS/WEEE compliant
Matrix 3000Matrix S+5K
Matrix HD4
BRIGHTNESS•5000 ANSI lumens @ 220 VAC, 4000 ANSI 
lumens @ 110 VAC
•90% brightness uniformity (corrected)•Color Purity Filter (CP FTM)
CONTRAST•SuperCRTMcontrast – 15002000:1 full field•450:1 ANSI minimum
LAMP•1.0 kW CERMAX®Xenon lamp module•1500 hours (typical) lifetime•LiteLOCTM(Light Output Control)
POWER•100 – 240 VAC @ 50/60 Hz•Power consumption: 1600 W maximum•Thermal dissipation: 5460 BTU/hr•Operating current: 10.4A @ 100V/8A @ 200V
DIMENSIONS (EXCLUDING LENS)•Weight: 72 lb (32.1 kg)•Shipping weight: 115 lb (52 kg)•Size (L x W x H): 22.3 x 26 x 12.3
(566 x 660 x 313 mm)
REGULATORY APPROVALS•UL/CSA/IEC 609501•FCC Class A•RoHS/WEEE compliant•CE, eK, CCC, PSE, MIC•EN55022; EN55024
SPECIALTY FEATURE•Motion platform ready available build to order*
Copyright 2007 Christie Digital Systems, Inc. All rights reserved. All brand names and product names are trademarks, 
registered trademarks or tradenames of their respective holders. Canadian manufacturing facility is ISO 9001:2000 certified.
The DLP™ logo and DLP™ Medallion aretrademarks of Texas Instruments. 
Performance specifications aretypical. Due to constant research, specifications are subject to change without notice. 
Printed in Canada. 2172
Apr 07NA
WWW.CHRISTIEDIGITAL.COM
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Matrix HD7
BRIGHTNESS•7000 ANSI lumens (±10%)•90% brightness uniformity (corrected)•Color Purity Filter (CP FTM)
CONTRAST•SuperCRTMcontrast – 15002000:1 full field•450:1 ANSI minimum
LAMP•1.2 kW CERMAX®Xenon lamp module•1500 hours (typical) lifetime•LiteLOCTM(Light Output Control)
POWER•200 – 240 VAC @ 50/60 Hz•Power consumption: 2000 W maximum•Thermal dissipation: 6825 BTU/hr•Operating current: 10A @ 200V
DIMENSIONS (EXCLUDING LENS)•Weight: 75 lb (34 kg)•Shipping weight: 120 lb (54.4 kg)•Size (L x W x H): 22.3 x 26.0 x 12.3
(566 x 660 x 313 mm)
REGULATORY APPROVALS•UL/CSA/IEC 609501•FCC Class A, CE, CCC•RoHS/WEEE compliant
SPECIALTY FEATURE•Motion platform ready available build to order*
BRIGHTNESS•2500 ANSI lumens (± 10%)•90% brightness uniformity (corrected)•Color Purity Filter (CP FTM)
CONTRAST•SuperCRTMcontrast – 15002000:1 full field•450:1 ANSI minimum
LAMP•500 W CERMAX®Xenon lamp module•1500 hours (typical) lifetime•LiteLOCTM(Light Output Control)
POWER•100 – 240 VAC @ 50/60 Hz•Power consumption: 1000 W maximum•Thermal dissipation: 3415 BTU/hr•Operating current: 10A @ 100V/5A @ 200V
DIMENSIONS (EXCLUDING LENS)•Weight: 72 lb (32.1 kg)•Shipping weight: 115 lb (52 kg)•Size (L x W x H): 22.3 x 26 x 12.3
(566 x 660 x 313 mm)
REGULATORY APPROVALS•UL/CSA/IEC 609501•FCC Class A•RoHS/WEEE compliant•CE, eK, CCC, PSE, MIC•EN55022; EN55024
SPECIALTY FEATURE•Motion platformready available build to order*
Matrix S+2K
Matrix HD2
Christie Matrix SeriesSpecifications
BRIGHTNESS•2300 ANSI lumens @ 500 W•1960 ANSI lumens @ 350 W•90% brightness uniformity (corrected)•Color Purity Filter (CPFTM)
CONTRAST•1500 – 2000:1 full field•450:1 ANSI minimum
LAMP•Single 500 W CERMAX®Xenon lamp module•Up to 4,000 hours starting @ 350 W•Up to 2,500 hours @ 500 W
POWER•100 – 240 VAC @ 50/60 Hz•Power consumption: 879 W•Thermal dissipation: 3000 BTU/hr•Rating: 10A @ 100V, 5A @ 200V
DIMENSIONS (EXCLUDING LENS)•Weight: 75 lb (34 kg)•Shipping weight: 120 lb (54.4 kg)•Size (L x W x H): 22.3 x 26.0 x 12.3
(566 x 660 x 313 mm)
REGULATORY APPROVALS•UL/CSA/IEC 609501•EMC  emissions: FCC part 15 and EN55022
(CISPR22) Class A 
•EMC  immunity: EN55024 
SPECIALTY FEATURE•Motion platform ready available build to order*
The first duallamp singlechip
DLP®simulation projector, the
Christie Matrix 3000 delivers
bold images, builtin connectivity
and failsafe reliability in a
compact, costeffective package.
For the most current specification information, please visitwww.christiedigital.com
WARRANTY•2years parts and labor (excluding lamp)   •Lamp – prorated
Matrix 4000 available build to order         
						

							 
English
 
 – 7
 
SAFETY INSTRUCTIONS
 
• If the muffler on your machine is fitted with a spark 
arrestor mesh then it should be cleaned regularly. A 
blocked mesh causes the engine to overheat, which can 
lead to serious damage. Never use a muffler with a 
defective spark arrestor mesh. 
 
Cutting equipment
 
This section describes how to choose and maintain your 
cutting equipment in order to:
• Obtain maximum cutting performance.
• Extend the life of cutting equipment.
 
General rules
 
1 Only use cutting attachments with the guards we 
recommend! See the chapter on Technical data.
2 Check the cutting attachment for damage or cracks. A 
damaged cutting attachment should always be replaced.
 
Locking nut
 
• When fitting, tighten the nut in the opposite direction to the 
direction of rotation of the cutting attachment. To remove 
it, undo the nut in the same direction as the cutting 
attachment rotates. (CAUTION! The nut has a left-hand 
thread.)
• Tighten the nut using the socket spanner. 35-50 Nm (3.5-
5 kpm).
 
CAUTION! 
 
 The nylon lining inside the locking nut must not be 
so worn that you can turn it by hand. The lining should offer a 
resistance of at least 1.5 Nm. The nut should be replaced 
after it has been put on approx. 10 times.
 
Cutting equipment
 
Trimmer head
 
• Only use the recommended trimmer heads and trimmer 
cords. These have been tested by the manufacturer to suit 
a particular engine size. This is especially important when 
a fully automatic trimmer head is used. Only use the 
recommended cutting attachment. See the chapter on 
Technical data.
• Smaller machines generally require small trimmer heads 
and vice versa. This is because when clearing using a 
cord the engine must throw out the cord radially from the 
trimmer head and overcome the resistance of the grass 
being cleared.
• The length of the cord is also important. A longer cord 
requires greater engine power than a shorter cord of the 
same diameter.
• Make sure that the cutter on the trimmer guard is intact. 
This is used to cut the cord to the correct length.
• To increase the life of the cord it can be soaked in water 
for a couple of days. This will make the line tougher so that 
it lasts longer.
!
 
WARNING! Never use a machine with faulty 
safety equipment. The machine’s safety 
equipment must be checked and maintained 
as described in this section. If your machine 
fails any of these checks contact your 
service agent to get it repaired.
 
IMPORTANT!
This section describes how to choose and maintain your 
cutting equipment in order to:
Reduce the risk of blade thrust.
Obtain maximum cutting performance.
Extend the life of cutting equipment.
Only use cutting attachments with the guards we 
recommend! See the chapter on Technical data.
Refer to the instructions for the cutting attachment to check 
the correct way to load the cord and the correct cord 
diameter.
IMPORTANT! Always ensure the trimmer cord is wound 
tightly and evenly around the drum, otherwise the machine 
will generate harmful vibration.
!
 
WARNING! Always stop the engine before 
doing any work on the cutting attachment. 
This continues to rotate even after the 
throttle has been released. Ensure that the 
cutting attachment has stopped completely 
and disconnect the HT lead from the spark 
plug before you start to work on it. 
						

							 
8 – 
 
English
 
SAFETY INSTRUCTIONS
 
General safety precautions
 
Starting
 
• The complete clutch cover and shaft must be fitted before 
the machine is started, otherwise the clutch can come 
loose and cause personal injury.
• Never start the machine indoors. Exhaust fumes can be 
dangerous if inhaled.
• Observe your surroundings and make sure that there is no 
risk of people or animals coming into contact with the 
cutting equipment.
• Place the machine on the ground, ensure the cutting 
attachment is clear of twigs and stones. Hold the body of 
the machine on the ground using your left hand (CAUTION! Not with your foot). Then grip the starter 
handle with your right hand and pull the starter cord.  
 
Never wrap the starter cord around your hand
 
 
 
Fuel safety
 
• Always use a fuel container with an anti-spill valve.
• Never refuel the machine while the engine is running. 
Always stop the engine and let it cool for a few minutes 
before refuelling.
• Make sure there is plenty of ventilation when refuelling or 
mixing fuel (gasoline and 2-stroke oil).
• Move the machine at least 3 m from the refuelling point 
before starting it.
• Never start the machine: 
1 If you have spilt fuel on it. Wipe off the spillage and 
allow remaining fuel to evaporate.
2 If you have spilt fuel on yourself or your clothes, 
change your clothes. Wash any part of your body that 
has come in contact with fuel. Use soap and water.
3 If the machine is leaking fuel. Check regularly for leaks 
from the fuel cap and fuel lines.
4 Avoid all skin contact with fuel. Fuel is a skin irritant 
and may even cause skin changes.
 
Transport and storage
 
• Store and transport the machine and fuel so that there is 
no risk of any leakage or fumes coming into contact with 
sparks or naked flames, for example, from electrical 
machinery, electric motors, electrical relays/switches or 
boilers.
• When storing and transporting fuel always use approved 
containers intended for this purpose.
• When storing the machine for long periods the fuel tank 
must be emptied. Contact your local gas station to find out 
where to dispose of excess fuel.
IMPORTANT!
The machine is only designed for trimming grass.
The only accessories you can operate with this engine unit 
are the cutting attachments we recommend in the chapter 
on Technical data.
Never use the machine if you are tired, if you have drunk 
alcohol, or if you are taking medication that could affect your 
vision, your judgement or your co-ordination.
Never use the machine in extreme weather conditions such 
as severe cold, very hot and/or humid climates.
Never use a machine that has been modified in any way 
from its original specification.
Wear personal protective equipment. See instructions 
under the heading Personal protective equipment.
Never use a machine that is faulty. Carry out the checks, 
maintenance and service instructions described in this 
manual. Some maintenance and service measures must be 
carried out by trained and qualified specialists. See 
instructions under the heading Maintenance.
All covers and guards must be fitted before starting. Make 
sure the spark plug cap and HT lead are not damaged. 
Otherwise you could get an electric shock.
The machine operator must ensure that no people or 
animals come closer than 15 metres while working. When 
several operators are working in the same area the safety 
distance should be at least twice the tree height and no less 
than 15 metres.
!
 
WARNING! A faulty cutting attachment may 
increase the risk of accidents.
!
 
WARNING! When the engine is started with 
the choke in either the choke or start throttle 
positions the cutting attachment will start to 
rotate immediately. 
						

							 
English
 
 – 9
 
SAFETY INSTRUCTIONS
 
• The transport guard must always be fitted to the cutting 
attachment when the machine is being transported or in 
storage.
 
General working instructions
 
Basic safety rules
 
1 Look around you:
• To ensure that people, animals or other things cannot 
affect your control of the machine.
• To ensure that people, animals, etc., do not come into 
contact with the cutting attachment or loose objects that 
are thrown out by the cutting attachment.
• CAUTION! Do not use the machine unless you are able to 
call for help in the event of an accident.
2 Do not use the machine in bad weather, such as dense 
fog, heavy rain, strong wind, intense cold, etc. Working in 
bad weather is tiring and often brings added risks, such as 
icy ground, unpredictable felling direction, etc.
3 Make sure you can move and stand safely. Check the area 
around you for possible obstacles (roots, rocks, branches, 
ditches, etc.) in case you have to move suddenly. Take 
great care when working on sloping ground.
4 Switch off the engine before moving to another area. Fit 
the transport guard before carrying or transporting the 
equipment any distance.
5 Never put the machine down with the engine running 
unless you have it in clear sight.
 
Basic working techniques
 
• Always slow the engine to idle speed after each working 
operation. Long periods at full throttle without any load on 
the engine can lead to serious engine damage.
 
Grass trimming using a trimmer head and 
plastic blades
 
Trimming
 
• Hold the trimmer head just above the ground at an angle. 
It is the end of the cord that does the work. Let the cord 
work at its own pace. Never press the cord into the area 
to be cut.
• The cord can easily remove grass and weeds up against 
walls, fences, trees and borders, however it can also 
damage sensitive bark on trees and bushes, and damage 
fence posts.
• Reduce the risk of damaging plants by shortening the 
cord to 10-12 cm and reducing the engine speed.
 
Clearing
 
• The clearing technique removes all unwanted vegetation. 
Keep the trimmer head just above the ground and tilt it. Let 
the end of the cord strike the ground around trees, posts, 
statues and the like. CAUTION! This technique increases 
the wear on the cord.
• The cord wears quicker and must be fed forward more 
often when working against stones, brick, concrete, metal 
fences, etc., than when coming into contact with trees and 
wooden fences.
• When trimming and clearing you should use less than full 
throttle so that the cord lasts longer and to reduce the 
wear on the trimmer head.
!
 
WARNING! Take care when handling fuel. 
Bear in mind the risk of fire, explosion and 
inhaling fumes.
 
IMPORTANT!
This section describes the basic safety precautions for 
working with clearing saws and trimmers.
If you encounter a situation where you are uncertain how to 
proceed you should ask an expert. Contact your dealer or 
your service workshop.
Avoid all usage which you consider to be beyond your 
capability.
You must understand the difference between forestry 
clearing, grass clearing and grass trimming before use.
!
 
WARNING! Sometimes branches or grass 
get caught between the guard and cutting 
attachment. Always stop the engine before 
cleaning. 
						

							10 – English
SAFETY INSTRUCTIONS
Cutting
• The trimmer is ideal for cutting grass that is difficult to 
reach using a normal lawn mower. Keep the cord parallel 
to the ground when cutting. Avoid pressing the trimmer 
head against the ground as this can ruin the lawn and 
damage the tool.
• Do not allow the trimmer head to constantly come into 
contact with the ground during normal cutting. Constant 
contact of this type can cause damage and wear to the 
trimmer head.
Sweeping
• The fan effect of the rotating cord can be used for quick 
and easy clearing up. Hold the cord parallel to and above 
the area to be swept and move the tool to and fro.
• When cutting and sweeping you should use full throttle to 
obtain the best results.
!
WARNING! Neither the operator of the 
machine nor anyone else may attempt to 
remove the cut material while the engine is 
running or the blade is rotating, as this can 
result in serious injury. Stop the engine and 
blade before you remove material that has 
wound around the blade shaft as otherwise 
there is a risk of injury. The bevel gear can 
get hot during use and may remain so for a 
while afterwards. You could get burnt if you 
touch it.
!
WARNING! Watch out for thrown objects. 
Always wear eye protection. Never lean over 
the cutting attachment guard. Stones, 
rubbish, etc. can be thrown up into the eyes 
causing blindness or serious injury.
Keep unauthorised persons at a distance. 
Children, animals, onlookers and helpers 
should be kept outside the safety zone of 15 
m. Stop the machine immediately if anyone 
approaches.