Rok 150-85-50379 User manual

f'
l
I .
I
11
..
;_ ,'
33cc Petrol Brush Cutter &Grass Trimmer
150-85-50379
~~
· ~
I
~ (, /!\
INST RUCTION MANUAL
I I Wrw1 1i 11 r i: rrn' YOIJI' personal safety,
I I N 11 11 1fl lJN O[ RSTAND before u sing .
11
f\VI I 11 ' .1 II J' ii I llJC rIDNSI OR FU TURE REFERENCE
M1 11fl 1 11 1 Chinn ~ ( E

TECHNICAL DATA
MODEL
Main unit
~ t e t ype
Maximum speed of spindle/onnino speed(r/min)
Idle speed of engine(r/minj
Centrifugal speed(r/min)
~ - __ -_- __ ~-
Measured vibration emission v111i11 1
at each manipulation (m/s2)
(According to ISO 22867)
Measured sound pressure level L
pA dB(A)
(According to ISO 22868)
Measured sound power level LwA dB(A) I
(According to ISO 22868)
Guaranteed sound power level
(According to ISO 2000/14/EC) -
Li ne Max. Cutting Pa th /Diameter of l in e -
Metal blade ( Ty pe/Diameter)
Rotation direction
of cutti ng device
Type
of aluminum polo -
150-85 -5 0379
Ce ntrifugal Clutch; ha rd shaft
8,000/10,000
3,000
3,800
Brush cu tt er:
•Io
ft h andle : 3. 1 72 mis'.
l{ljl
ht 1 1011d le :27 30 111 /0'
Cl r 1m~ tnmm o1
I dt h 1111dlo 6 464 111 /•'
I 11111 11 11111<1!0 ll 0 '11 11 1hi·
I \• 111 111 /M
1 •1111 h 1· 1111 1 •1 ti '••I I 1111 tA
I 111 1 ~• l1 11 1ll1 l1tl 1111 111111 (I
I \• 1111 1( 1\i
I\llillh Itilft!f· i! )t! "' 1111 (~
l1111a•1 ll1111t1 \111 I OI ! hi till t
I• l1lll(A)
1
1' 1 1111 ( /\)
44 Cnl(ljl'.I ~ . 111111 / ' 00 1 11 •11
3-l oo lh , I 4111111• J IOl 11111
1p :'.b 4111111 ' I UJ!ltl 1111 11 I
Count rn Ulm kw 111 0
_t;oo n 11 0 111111 0 lop)
2 pl rn 1 1•1
e4 tl
l
II.)
Woi fJht whon dry(k{I)
---
Enf 1111 0 N
111 11 0 of 1111 r11 11 11
---
IYf 111
I h11 j1 hll 11 11 111 111 ( 11 11
1
)
M11c11 1 11111 1111 111 1 1ll (l 1W/t/111 • 11)
(11 111 1111 1d 1 11 1111Wi iii 11 11 111 111 1:1) -
1·(
1111 lf11 11 1111 I• • 11 '111 11tp ll1i ll Ill ll lllX
1111 q 11111 1 01 1f 11 1111 1 11 1•11 'UlkWl1>
~
--
I 111 Itl lll llttl
11 11111 .. 11
M 11 t ft1 .. l t·I ri. 111 111 1 --
I 111 •1 11 1!• 1
I 11111 I 111k I II '·" tl y( 1111
1
) . --
l 11 1i h11l o 11 l Ih 1t i1 11 11hJ 1111 t 1 11 0 111111110 without notlco
~ P t <3 0!
Air-cooled, 2 cycle; verti•
Piston valve;gasoline e
nb
al
in e
33
1.017500
I
S5 20
.,. ,
Diaphragm-type
Non-
co ntact electronic ifJll
ll f lll
Recoil type
h1el mi
xe d with lu br te 11ll11 1 I I
(ratio of 40:1)
96 0
GRAPHIC WARNINGS
Because a trimmer/cutter is a high-speed, fast cu tt i ng power too l, special safety pre cau tions
must be observed
to reduce t he risk of personal injury. Read this manual carefully. Be familiar
with the controls and the proper use of the
unit Know how to shut it off, and how to unhook a
harnessed unit quickly.
&
~
Ci)
10
0
~
.&
~
&
11 .. t
&
£
Ch olie control
Iii
ItI
• Warning
• Read the instr
uc tion manual
• Weareye protection, ear muffles and helmet
• Wearfoot protection
• Wear glove to protect youi 1
1111 1< 1•1
• Beware
of foot injury by o u111 1 10 ottachmont
• Beware of thrown objocts hit by cutti
ng attachmen t.
Never use wi th out prop er ly mounte <d guard.
Beware of blade thrust
• Beware of falling objects
• Koop bystanders at least 15 m away
• Shorp blade on
th e safety guard, donot touch th e cut off
knife
• I xhomely hot surface. Do not touch a hol mufflor,
oo ar box
01 cylinder, you may get burned. Th ese parls got oxlr1imoly
hot
fr om operation and remain hot for a sho 1t lin11 11111111 t ho
111111 1s turned off.
• SIOll
pou ltlon (oh ok11 olr111rn l)
Run position (C hoko o p1 111)

.£
£
Always TURN OFF ENGNINE and make sure the cutting tool has
stopped before cleanin
g, removing or adjusti ng blade.
WARNING! Nevermodify a trimmer or cutter in any way.
Improper u se of the ma chine can cause SERIOUS OR FA T AL
PERSONAL INJURY.
WARNING & DAN
GER
The engine exhaust from this product contains chemicals that can be harmful. Ensure
unit is used in well ventilated, outdoor areas_.
__ _ _ ___ __.
Specifications, descriptions and illustrati ve material in this manual a re as accurate as known at
the time
of publication, but are subj ec t to change without notice. Illustrations may in clude
optional equipment and accessories, and may
not include all standa rd equipment.
SAFETY RULES & PRECAUTIONS
Proper safety precautions mu st be observec:I. Like all power equipment this unit must be
handled carefully. DO NOT EXPOSE YOURSELF OR OTHERS TO DANGER.
Follow th ese general rules. Do not permit others to use this machine unless they are thoroughly
responsible and have read, and understand the machine manual and are trained in its operation.
• Secure the machine during transport to prevent loss of fue l, damage or in j ury .
• Always wear safety goggles for eye protection. D re ss properly, do not wear loose clothing or
jewelry that could become caught in moving parts of the unit. Safe, st
urdy, nonskid footw ea r
should always be worn. Long hair should be tied back. It is recommended that legs and feet
be
covered to protect from flying debrisduring operation.
• Inspect th e en ti re machine for loose parts (nuts, bolts, screws, etc.) and any damage. Repair or
replace as necessary before
us ing th e machine.
• DO NOT USE any attachment with this power head otherthan the ones re
co mmended by our
company. Serious injury to the operator or bystanders could result as well as damage
to the
machine.
• Keep the han
dl es free from oil and fuel.
•A lways use proper handles and shou ld er strap whencuttin g.
• Do not smoke while mixing fuel or filling tank.
• Do notmix fuel in an enclosed room
or near opon flames.Assure adequate ventilation.
• Always mix and store the fuel in a properly
ma rked container that is approved by local codes
and ordinances for such usage.
•N ever remove the fu el tank capwhile the engine is running.
• Neverstart
or run the engage inside a cl osed room or building. Fumes from th e exhaust contain
dangerous carbon monoxide.
• Never attempt to make engine adjus
tm en ts while the unit is running and strapped to the
operator. Always make engine adjustments with the unit resting on a flat, clear surface.
• Do not use the unit
if it is damaged or po orly adjusted. Never remove t he ma ch i ne 's gua rd .
Serious injury to the operator or bystanders could result as well as damage to the machine.
•
In spect t he area to be cut and remove all debris that could become entangled in the nylon
cu ttu if Jhead. Also remove any ob jec ts that the unit may throw dur ing cutting.
• l
<oo p children away. Onlookers should be kept at a safe distance from the work area, at least
1S Ml !HE S (50 FEET).
• N
11 vn1loove the machine unattended.
• lJu nnt
11 so this unit f or any job other than those for which it is intended as des cr ibed in this
manw
1I
• Do 1101 overreach. Keep proper footing and ba lance at all times. Do not run the unit wh ile
standing 0
11 n ladder or on any other unstable footing location
• Keep hundu ond feet clear
of the nylon cutting head or blade whilo 11nil In 111 11 so
• Do not u
oo this type of mach in e for sweeping away debris.
• Do not uso tho unit when you are tired, ill or underthe influence ormedication, clru go or alcohol.
• Only u
se n yl or. ...... tllng head which is free of damage. If a stone or any othor obu tu clo Is hil, stop
the engine and chock the nylon cutting head. A broken or unbalanced nylon cut
ti ng head must
never
be used.

FOLLOW INSTRUCTIONS FOR CHANGINGACCESSORIES
• Do not store in a closed area where fuel vapors can reach an open flame from hot wa ter
heaters, furnaces, etc. Store only in a locked, we ll ventilated area.
• Ensure safe and proper performance
of your product. The use of any other acce.ssories or
attachments
may cause a potential hazard or injury to the user, damage to the machine and void
this warranty.
• Clean the machine completely, especially, the fuel tank, its surroundings, and the air cleaner.
• When refueling, be sure to stop the engine and
co nfirm that it is cooled dow n. Never refuel
wh en the engine is running or hot. When gasoline spills, be sure to wi pe it up completely dispose
of those materials before starting the engi
ne .
• Stay clear
of other workers or by standers by at least 15 meters/50 feet.
• When ever approaching an operatorof the machin
e, carefully call his attention and confirm that
the operator stops the engi
ne . Be careful not to startle or distract the operator which can cause
an unsafe situation.
• Never touch the nylon cutting head or blade when ever the engine is running. If it is necessary
to replace the
pr otector or cutting attachment, be sure to st op tho engine and confirm that the
cutting device has stopped running.
• The engine should be turned offwhen the machine is moved between work areas.
• Be careful not to hit the nylon cutting head against stones, or t
he ground.
• Unreasonable rough operation will shorten the life
of the machine as well as create an unsafe
environment for yourselfand those around you.
• Payattention and
be aware of loosening and overheating of parts. Ifthere is any abnormality of
the machine, stop operation immediately and check the machine carefu lly. If necessary, have the
machine serviced by an authorized dealer. Never continue to operate a machine which may
be
malfunctioning.
• In start-up or
dur ing operation of the engine, never touch hot parts such as the muffler. the high
volt
ag e wire or the spark·plug.
• After the engine has stopped, the muffl
er is still hot. Never place the machine in any places
where there are flammable materials (drygrass, etc.), co
mb ustible gasses or co mb ustible liquids
• Pay special attenti
on to opera ti on 1n I lle ra in oriusl aner th e rain as the gr ound may be slippery.
•
If you slip or fall lo th o ground or tn to n hal o, rolease th e throttle lever immediat ely.
• Be car ef ul not to dr op lho mach1no or llll 1t u9 t 11n st obstacles.
• Before proceed
111g to ad iust or repair lhe machine, be sure to st op the engine and detach the
spa
rk plug.
• When the machine is placed in storage for a long time, drain fuel from the fuel tank and
carburetor, clean the parts, move the machine to a safe place and confirm that
th e engine is
cooled down.
• Make periodic inspections to assure safe and efficient opera
ti on. For a thorough inspec ti on of
yo ur machin e, please contact a dealer.
• Keep the machine away from fire or sparks.
•
When using the ma chine for a long period of time, if you experience discomfort, redness 1111d
swelling of the fingers followed by whitening and loss of feeling, consult your physician bof(ltu
further use.
• Always wear ear protection, loud noise
fo r long periods can make hearing debase and loud tu
lost hearing.
• Total face and head protection must
be worn to prevent possible injury.
• Wear no-slip heavy duty work gloves to improve your g
ri p on the brush cutter·handlo CltlVllO
also reduce the t ra nsmission of m ac hine vibration to y our hands.
•WARNING : Th e c utt er area is still dangerous while the ma chine is coasting t oo ot op .
& •
When transporting, this unit must be handled carefully. Do not
expose you
rs elf oro th ers to dan ger.
• Envelop the blade before storage. Keep children away from it.
• Neverremove the machine's guard.
• Do not store in a closed area where fuel vapors can reach an open flame from hot water heaters,
furnaces, etc. Only store in a locked, well ventilated area.
• Never place the machine in any places where there are flammable mate
ri als (dry grass, etc.),
combustible gasses
or combustible liquids.
•
Wh en the machine is placed in storage for a long time, drain fuel from the fuel tank and
carburetor, cle
an the parts, move the machine to a safe place and confirm that the engine is
cooled down.
Kickback and Related Warnings
• Kickback is a sudden re action to a pinched or snagged rotating whee l, backing pad, brush orany
ot her accessory. Pinching or snagg in g causes rapid sta ll ing of the rotat in g accessory which in turn
causes
th e uncontro lle d power tool to be forced in the direction opposite of the accessory's rotation
at the point of the bindin g.
• Forexample, if an abrasive wheel is snagged or pinched by the work piece, the edge of the wheel
that is entering into the pinch point can d
ig into the sur fa ce of the material causing the wheel to climb
out
or kick out. The wheelmayeitherjump toward or nway from the operator,depending on direction
of the wheel's movement at the point of pinching Abrasive wheels may also break under these
conditions.
• Kickback is the result
of power tool misuse and/or incorre ct operating procedures or conditions and
can be avoided by
ta king properprecautions as given below.
a) Ne
ve r place your hand near th e rota tin g accesso ry . Accessory may kickback overyour ha nd.
b) Do no t position your bo dy in the ar ea whe re power t oo l will move if k ic kb ack occurs.
Kickback will propel the tool in direction opposite tothe whee l' smovement at the point of snagging.
c) U
so special care wh en working cotners , sh ar p edges etc. Avoid bouncing and snagging
tii o access ory . Corners. sharp edges or bouncing have a tendency to snag the rotat in g accessory
nncl
e< iuse loss of control orkickback.
QPl:RATION OF QUICK RELEASE MECHANISM
IJ 11 ll lli ll ntnp 10 release the machine from you in th e case of an emergency.
.

DESCRIPTION
5
l
.. ~~ 1 ·.
¢'Col
...-:-. -::~~
- ...- I . ........ '"-.. ~
,f. ' -- ~;. i!A '
./• --- ~~- ...• .
I /T ~ · · .. ;.
,,,., ·~, ..
' . ,~ .. ... . . ' ''· ,.,...-.
/' ~·.,
2
12
3 '•
/'> •
1. BLADE 3-tooth blade for grass,weed or brush cutting application s. Ha rn ess and metal shield
are required for blade operation.
2. NYLON CUTTER HEAD Contains replaceable nyl
on trimmi ng line that advances wh en the
trimmer head is tapped
aga inst the ground wh ile the head is turning <=1 t normal opera tin g speed.
3. DEBRIS SHIELD Mounted just above the cutting attachmen t. Helps prot es t operator by
deflecting debris produced during the trimming operation.
Do not operate unit without shield.
4. CUT-OFF KNIFE Trims nylon filament to the correct length-7". head to e nd of line-when
nylon trimming head
is bumped on th e ground during operation. line advanc e. If trimmer is
operated without a cut-off knife
th e line becomes too lo ng th e engine, this will overheat or
damage th e engine.
5. DRIVE S HA FTASSEMBLY Co nt ~ 1 1n n n npocla lly designed liner flexible drive shaft.
6. IGNITION SWITCH "slide switch" mo un lod 0 11 lop of th e Thrott le Trigger Housir g. Move
switch FORWARD to Run, BACK TO STOP.
7. SAFETY LEVER Before accelerati on, compress it please.
8. THROTTLE TRIGGER Spring l oa ded to return to idle when released. When accel e; rating,
press trigger gradually for best operating technique. Do not hold trigger while starting.
9. HANDLE this handle can be adjusted at you convenience for comfort.
10. STARTER HANDLE pull handle until engine start
s, th en return handle slowly. DO NOT let
handle snap back
or damage to starter will occur.
11. CHOKE the choke control is locat ed on the top of the filt er cover.
12. AIR CLEANER COVER Co
nt a in s replaceable felt element.
13. PRIMER BULB Pushing primer bulb (7 to 10 times before starting),will remove all air r
rn ct
sale fuel from fuel system and bring fresh fuel to the carburetor.
14 . FUEL TANK LID.
15. FUEL TANK Contains fuel
and fuel filter.
' i
ASSEMBLY INSTRUCTIONS
INSTALLING THE LOWER SHAFT
Pack the aluminum tube into the connector inside. Make the
convex ball aim at the hole on the connector and then turn the
knob clockwise until it is tight.
INSTALLING HANDLE
Install handle in bracket. Position the h and le in a
comfortable operating position
and tighten four bolts.
INSTALLING NYLON LINE CUTIER HEAD
Al ig n holo in adapter plate with hole in shaft and in stall
locking too
l.
Thread cutter head onto shaft (turning it counter
clockwise) until it
is tight. Remove locking tool
9
(9)
Convex billl Hole Con~edor
A l uminum~
Knob
Pla• .l1 c•1 ~ 1 1w hl
U( l fl CI' pldlc