Portek Rufcut Service manual
1
Read and fully understand the
instructions before operating
the Portek RufCut
Operators Handbook
portek.co.uk
Wheeled
Brushcutter
2
READ AND UNDERSTAND THIS MANUAL
FULLY BEFORE OPERATING THE RUFCUT
The Powerstrim Rufcut is a high-speed, fast cutting power tool, special safety precautions
must be observed to reduce risk of personal injury. Read this manual carefully. Be familiar
with the controls and the proper use of the unit. Know how to shut if off quickly.
This graphic accompanied by the words WARNING and DANGER
highlights an act or a condition which can lead to SERIOUS INJURY
ALWAYS WEAR EYE AND EAR PROTECTION.
Always TURN OFF ENGINE and make sure the brushcutter head has stopped before cleaning,
removing or adjusting line.
DISCONNECT spark plug lead before cleaning or essential maintenance to the RufCut.
WARNING! Never modify this brushcutter in any way.
Improper use of any brushcutter can cause SERIOUS OR FATAL PERSONAL INJURY.
The engine exhaust from this product contains chemicals to cause cancer, birth defects,
or other reproductive harm.
Specifications, descriptions and illustrative material in this manual are as accurate as known
at the time of publication, but are subject to change without notice. Illustrations may include
optional equipment and accessories, and may not include all standard equipment.
Proper safety precautions must be observed. Like all equipment this unit must be handled
carefully DO NOT EXPOSE YOURSELF TO DANGER. Follow these general rules. Do not
permit others to use the Rufcut unless they are thoroughly responsible and have read, and
understand the machine manual and are trained in its operation.
Always wear safety goggles for face protection. Dress properly, do not wear loose clothing
or jewellery that could become caught in moving parts of the unit. Safe, sturdy, steel toe cap
non skid footwear should always be worn. Long hair should be tied back. Legs and feet be
covered to protect from flying debris during operation.
Before you start
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ALWAYS WEAR SAFETY CLOTHING IN CONJUNCTION WITH HAND, EYE, HEARING
AND FOOT PROTECTION TO HSE/EN SPECIFICATIONS - SEE PAGE 6
3
Before use, inspect the entire machine for loose parts (nuts, bolts, screws etc) and any
damage. Repair or replace as necessary before using this machine.
DO NOT USE any attachment with this power head other than the ones recommended by
Portek. Serious injury to the operator or bystanders could result as well as damage to the
machine.
Keep the handles free from oil and fuel
Do not smoke while mixing fuel or filling tank.
Do not mix fuel in an enclosed room or near open flames. Assure adequate
ventilation.
Always mix and store the fuel in a properly marked container that is approved by
local codes and ordinances for such usage.
Never remove the fuel tank cap while the engine is running.
Never start or run the engine inside a closed room or building. Fumes from the
exhaust contain dangerous carbon monoxide.
Never attempt to make engine adjustments while the unit is running. Always make
engine adjustments with the unit resting on a flat, clear surface. REMOVE SPARK
PLUG LEAD TO PREVENT ACCIDENTAL STARTING
Do not use the unit if it is damaged or poorly adjusted. Never remove the
machine’s guard.
Inspect the area to be cut and remove all debris that could become entangled in the nylon
cutting head. Also remove any objects that the unit may throw during cutting.
Keep children away. Onlookers should be kept at a safe distance from the work area,
at least 15metres/50 feet.
Never leave the machine unattended.
Do not use this unit for any job other than those for which it is intended as described
in this manual.
Do not overreach. Keep proper footing and balance at all times. Do not run the unit while
standing on a ladder or on any other unstable footing location.
Keep hands and feet clear of the nylon cutting head while unit is in use.
Do not use this type of machine for sweeping away debris.
Do not use the unit when you are tired or under the influence of medication, drugs or alcohol.
Important safety information
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4Important safety information
NEVER use a damaged strimmer head. If a stone or any other obstacle is hit, stop the
engine and check the nylon cutting head. A broken or unbalanced nylon cutting head
must never be used.
FOLLOW INSTRUCTIONS FOR CHANGING ACCESSORIES.
Do not store in a closed area where fuel vapours can reach an open flame from hot water
heaters, furnaces etc. Store in a locked, well ventilated area only.
Use only PORTEK equipment parts when servicing the unit, this will ensure safe and proper
performance of your product. These parts are available from your dealer. The use of any other
accessories or attachments may cause a potential hazard to the user, damage to the machine
and void this warranty.
When refuelling, be sure to stop the engine. NEVER refuel when the engine is running or has
overheated. When gasoline spills, be sure to wipe it up completely and properly dispose of
those materials before starting the engine.
Stay clear of other workers or bystanders by at least 15 metres/50 feet.
Whenever approaching an operator of the machine, carefully call his attention and confirm the
operator stops the engine. Be careful not to startle or distract the operator which can cause an
unsafe situation.
Never touch the nylon cutting head whenever the engine is running. If it is necessary to adjust
the protector or nylon cutting head, be sure to stop the engine and confirm that the nylon
cutting head has stopped running.
The engine should be turned off when the machine is moved between work areas.
Be careful not to hit the nylon cutting head against stones or the ground.
Unreasonable rough operation will shorten the life of the machine as well as create
an unsafe environment for yourself and those around you.
Pay attention to loosening and overheating of parts. If there is any abnormality of the machine,
stop operation immediately and check that machine carefully. If necessary, have the machine
serviced by an authorised dealer. Never continue to operate a machine which may be
malfunctioning.
In start-up or during operation of the engine, never touch hot parts such as the muffler, the
high voltage wire or the spark plug.
After the engine has stopped, the muffler is still hot. Never place the machine in any places
where there are flammable materials (dry grass etc) combustible gasses or combustible liquids.
AFTER USE
Clean the machine completely, especially the fuel tank, its surroundings and the air cleaner.
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5
Safety and contents
Pay special attention to operation in the rain or just after the rain as the ground may be
slippery.
If you slip or fall to the ground or into a hole, release the throttle lever immediately.
Be careful not to drop the machine or hit it against obstacles.
Before proceeding to adjust or repair the machine, be sure to stop the engine and detach the
spark plug cap from the spark plug.
When the machine is placed in storage for a long time, drain fuel from the fuel tank and
carburettor, clean the parts, move the machine to a safe place and confirm that the engine is
cooled down.
Make periodic inspections to assure safe and efficient operation. For a thorough inspection of
your machine, please contact a dealer.
Keep the machine away from fire or sparks.
WARNING: The cutting area is still dangerous while the
machine is coasting to a stop.
CONTENTS
Important safety instructions 2 - 6
Specifications 7
Assembly of RufCut 7
Powerstrim mulching head and adjusting line 9
Operation 12
Exploded drawings 15
Maintenance 17
Troubleshooting and spare parts 18
Certificate of conformity 19
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6Safety Equipment Requirements
Essential Equipment for Your Protection
The Rufcut Wheeled Brushcutter complies with all current safety standards. For your
safety You must wear full protection as specified below.
Head, eye and hearing protection
Eye protection to EN166 – B
Hearing protection to EN 352-1: 2002
Face protection visor recommended
Hand protection
Gloves to EN 12477:2001
Foot protection
Boots to EN 20345:2011
Leg protection
Sturdy full length trousers - ideally to EN381 standard
7
Specifications
Drive system Automatic centrifugal clutch;
Spiral bevel gear; flexible shaft
Reduction ratio 17:22
Max vibration level: 7.5m/s2
Sound pressure level (LpA): 90dBA
Sound power level (LwA): 108dBA
Sound power level guaranteed (LwA): 110dBA
Max speed cutter head: 6000 min-1
Blade rotation direction Clockwise seen from above
Type of handle Double handle
Engine Single cylinder Air-cooled
2 stroke petrol
Capacity 52cc
Maximum power output <1.42 kW
Carburettor Float type
Ignition Non-contact electronic ignition
Starting method Recoil type ‘pull’ starter
Fuel mixture 25:1 - petrol:oil mixture
Fuel tank capacity 1.2l
Weight of complete unit 17kg
Strimmer head supplied PowerStrim 6 Mulching Head
Toolkit Funnel, tools and fuel container
RufCut box contents
2 stroke petrol engine mounted in frame with control handle
Powerstrim6 Mulching Head with adaptor washers
2 x wheels with pneumatic tyres
Steel axle complete with washers, spacer, circlips and retaining nuts
Toolkit - allen keys, spark plug spanner, screwdriver, funnel, mixing container
8Setting up
Assembly
The RufCut is supplied partly assembled - to get started please follow the instructions
below:
1. Remove items from the box and check the contents. The engine is already
mounted in the frame. Place frame and engine in upright position.
2. Assemble the handle by rotating and inserting into frame; use the bolts and
dome nuts Ato secure.
3. Install the brushcutter shaft
Remove the allen screws from the clutch housing.
Insert the brushcutter shaft into the clutch housing - you may need to rotate the shaft
to allow the splines to engage. Align the hole in the brushcutter arm with the small
allen screw and tighten.
A
9
With the unit tipped up remove the shaft nut
and lock the gearbox with allen key
Fit the aluminium boss and replace shaft nut
- left hand thread! You will not need the
plastic adaptor washers.
Keeping the shaft locked tighten with tube
spanner supplied - remember left hand thread!
Line can be adjusted/changed by loosening/
tightening allen clamp screw.
Fit the stoneguard with allen bolts and the
side locating screw into the head housing.
Screw on the plastic line hub, left hand thread!
Brushcutter Head
4. Fitting the cutting head and stoneguard
Never use line longer than 30cm as it will reduce engine speed and overload clutch
10
5. Fitting the axle and wheels
Tip the unit to access the frame to insert the axle.
Take the axle with the welded washer at the right hand side (looking from the front
of the RufCut) and push through as shown, then twist to insert the other end through
the framework.
6. Fitting wheels - Right hand wheel looking from front.
Use the washer, spacer and circlip on the right hand side, slide on wheel then use a
washer and large locknut to retain wheel. Note: you may need to use a pair of pliers/
mole grips to prevent the axle from turning when tightening the nyloc nut.
Wheels and Axles
11
6. Fitting wheels - Left hand wheel looking from front.
Install the circlip into the groove on the left hand side then, slide on wheel then use a
washer and large locknut to retain wheel. Note: you may need to use a pair of pliers/
mole grips to prevent the axle from turning when tightening the nyloc nut.
The axle position can be adjusted by
pulling the adjustment knob up and
releasing once axle has been re-positioned
to enable the head to strim against walls
RIGHT STRAIGHT LEFT
Setting up
12
Preparing the fuel
Use the mixing container supplied to mix the petrol and 2 stroke oil (see
specifications) in the ratio of 25:1. Fill the fuel tank of the Rufcut (do not overfill).
Starting
To prime the engine with fuel press the flexible plastic bulb several times to pump
the fuel into the carburettor
Move the red lever up to set the choke to enable easier starting especially in cold
weather. Once engine is running move lever into the run position.
On the handle slide the STOP button to the right to allow the machine to run
Operation
STOP RUN
SPEED OF HEAD
INCREASES WHEN THIS IS
PRESSED
ENGAGING THIS BUTTON WHEN
RUNNING WILL LOCK THE
MACHINE AT HALF THROTTLE
DEPRESS THIS LEVER
TO ENABLE SPEED CONTROL
13
Keeping a firm grip on the RufCut and keeping away from the brushcutter head, pull
the starter cord to start the RufCut. When you pull the starter grip, do not wrap the
starter cord around your hand.
Do not let the grip snap back, but guide the starter cord to rewind it properly. Failure
to follow this procedure may result in injury to your hand or fingers and may damage
the starter mechanism.
Once the engine is running, move the choke lever back to run position.
Flexible handle to allow
working on a slope and
comfort of operator
Adjust the handle for comfort and for use on sloping ground
Operation
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14
Walking forward,
take slow sweeping
movements to clear long
grass and brush with ease
WEAR SAFETY
PROTECTION AT
ALL TIMES!
Operation
NEVER use a damaged strimmer head. If a stone or any other obstacle is hit, stop the
engine and check the nylon cutting head. A broken or unbalanced nylon cutting head
must never be used. ALWAYS stop the engine before inspecting any damage. If in
doubt seek expert advice before using the RufCut or starting work again.
Do not overreach. Keep proper footing and balance at all times. Special care must be
taken in slippery conditions (wet ground, snow) and in difficult, over-grown terrain.
Watch for hidden obstacles such as tree stumps, roots and ditches to avoid stumbling.
For better footing, clear away scrub and cuttings. Be extremely cautious when working
on slopes or uneven ground.
If the vegetation being cut or the surrounding ground is coated with a chemical
substance (such as an active pesticide or herbicide), read and follow the instructions
and warnings that accompanied the substance at issue.
NEVER use the RufCut without the stoneguard fitted and adjusted correctly
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ALWAYS WEAR SAFETY CLOTHING IN CONJUNCTION WITH HAND, EYE, HEARING
AND FOOT PROTECTION TO HSE/EN SPECIFICATIONS - SEE PAGE 6
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27
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5
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31 7
7 30
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92 52
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32
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Framework assembly
No. Description Qty.
1 Motor Chassis Assy 1
2 Latch 1
3 Actuator Rod 1
4 Controls 1
5 Wheel 2
6 Knob 2
7 Washer 4
8 Spring 1
9 Washer 4
10 Spindle 1
11 Knob 1
12 R Clip 1
13 Control Packer 2
14 Washer 4
15 Circlip 2
16 Nut 2
No. Description Qty.
17 Hand Grip 2
18 Logo Panel 1
19 Chassis Extension 1
20 Adjusting Plate 4
21 Handlebar 1
22 Tool Box Lid 1
23 Spring 2
24 Lock Saddle 2
25 Nut 2
26 Bolt 2
27 Bolt 2
28 Nut 2
29 Screw 2
30 Bolt 1
31 Nut 1
32 Spacer 1
16
No. Description
2 Bracket
3 Starter assy
4 Washer
5 Starter plate
6 Crankcase
7 Gasket
8 Seal
9 Bearing
10 Gasket
11 Silencer
14 Crankshaft
15 Half clip
No. Description
16 Seal
18 Crankcase
20 Flywheel
21 Coil
25 Clutch
27 Clutch screw
28 Clutch cover
30 Fuel tank cap
31 Fuel tank
33 Fuel tank bracket
35 Cover
36 Spark plug
No. Description
37 Cylinder
39 Cylinder gasket
40 Piston ring
41 Piston
42 Gudgeon pin clip
43 Gudgeon pin
44 Needle bearing
45 Gasket
46 Manifold
47 Gasket
49 Carburettor
50-58 Air filter assy
Engine breakdown drawing
17
Maintenance
The RufCut will provide reliable performance and
service if maintained regularly.
The following intervals apply to normal operating
conditions. If you are using the RufCut in very dusty
conditions, adjust accordingly.
Please contact your Portek Dealer if in any doubt.
Complete RufCut Visual inspection (condition, leaks) X X
Clean X
Controls Check X X
Air Filter Element Clean X
Replace X
Fuel tank Clean X X
Spark plug
Electrode gap 0.025” (0.635mm) X
Replace every 100 operating
hours
Brushcutter head
Visual inspection X X
Replace X
Tighten X X
All screws/nuts and
fixings for tightness Check X
before starting work
after finishing work or daily
after each refueling stop
if problem
if damaged
if required
18 Troubleshooting & spare parts
WARNING! Operating problems are often due to causes that the user
can fix. Therefore check the product using this section to eliminate
these simple issues. In most cases the problem can be solved quickly.
Spare parts
A full range of spares are available. Please contact your Portek Dealer to request
replacement parts.
WARNING! Only perform the steps described below! All further
inspection, maintenance and repair work must be performed by an
authorised service centre or a similarly qualified specialist if you cannot
solve the problem yourself! IF IN DOUBT SEEK EXPERT ADVICE
Problem Possible Cause Remedy
Cannot start RufCut
Not enough fuel in fuel tank Add fuel
Primer bulb has been not
pressed at cold start
Press the primer bulb and
restart
Spark plug is wet Remove spark plug and dry
Spark plug is damaged Replace spark plug
Spark plug connector lose Check and secure
Spark plug gap incorrect Set gap to 0.025” (0.635mm)
RufCut stops
Fuel is low Fill with fresh fuel to correct
25:1 ratio
Head is overloaded/blocked Turn off RufCut, remove
obstruction
Poor cutting performance
Brushcutter head lines worn Replace lines
Material being cut is not
suitable for head
Choose different head unit
Excessive vibration Bolts/nuts are loose Check and tighten
Excessive smoke Wrong fuel mixture Drain fuel and replace
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19
EC Declaration of Conformity
Portek Ltd, Bryn Hall, Knolton Bryn, Overton on Dee,Wrexham, LL13 0LF declare that, in
accordance to the following directives,
2006/42/EC (Machinery Directive)
2004/108/EC (EMC Directive)
2000/14/EC (Noise Emissions Directive)
97/68/EC (NRMM Emissions Directive)
the “Rufcut” has been designed to comply with the relevant sections of the below
BS EN ISO standards:-
12100-2: 2003
14121-1: 2007
13857: 2008
953:1997 + A1: 2009
1037: 1995 +A1: 2008
11806-1: 2011
The unit complies with all applicable Essential Requirements of the Directives.
Declaration made by Stephen Morris, Designer
on 26/05/2016.
Declaration of Conformity
20
Portek Ltd.
Bryn Hall, Knolton Bryn
Overton-on-Dee
Wrexham, LL13 0LF
Tel: 01234 889 454
Fax: 01234 889 464
General enquiries
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