Masport MH20M User manual

554285 - Masport Hedge Trimmer OM - July 2010
IMPORTANT: Keep these instructions and the engine booklet in a safe place for future reference.
They contain important information about your brushcutter.
Hedge Trimmer
OWNER’S
MANUAL
This manual covers the models: MH20M & MH23K.
Some features mentioned may not apply to your Hedge Trimmer.
Part No: 554285

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554285 - Masport Hedge Trimmer OM - July 2010
Safety Alert Symbols
This symbol is used to call your attention to instructions concerning your personal safety.
OBSERVE THIS SYMBOL...It points out important safety precautions.
It means: ATTENTION! BECOME ALERT! YOUR PERSONAL SAFETY IS INVOLVED!
Read the message that follows and be alert to the possibility of personal Injury or Death!
Read the operation manual carefully.
Wear eye and ear protectors when using this machine.
Safety Alert Symbols
(1) This machine may cause serious injuries. Please read the Operation Manual well and
master all operations and the correct procedures before operating this machine.
(2) CLOTHING (Select appropriate clothing)
Wear a long sleeved garment and long trousers. Avoid jackets or trousers with flared cuffs because
they may be caught in the machine or in cut branches.
Wear a hat with a brim and safety glasses and ear protectors during operations.
Wear sturdy non-slip shoes. Do not wear sandals, jandles or open footware
Wear heavy duty gloves.
(3) OPERATING CONDITIONS
If you are not familiar with the machine, or if you are borrowing the machine, ask for instructions
on safe operation before starting.
Operation of this equipment under any of the points below can cause major injury.
1. Mentally unfit persons
2. Persons under the influence of drugs
3. Under-aged minors
4. Persons who cannot make normal operation due to extreme fatigue, disease, sickness,
effects of medication or drugs and other similar reasons
(2)−①
(2)−③
(3)−②
(3)−②

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554285 - Masport Hedge Trimmer OM - July 2010
This manual shows how to handle, assemble and operate the machine properly. To use the machine safely with best results,
be sure to read this manual carefully along with the handling instructions for the engine.
Specifications
Type MH20M MH23K
Blades
Type Double Double
Overall length (mm) 550 750
Cutting length (mm) 455 700
Tooth pitch (mm) 35
Speed 998mm/sec / 7000rpm 1014mm/sec / 7000rpm
Transmission
Clutch Automatic centrifugal clutch
Gear ratio 1:4.25 1:4.14
Drive Two series camdrive
Lubrication Grease
Engine
Model TL201 TH23
Displacement (cc) 19.8 22.5
Max. output (kW) 0.74 1.3
Fuel tank capacity (cm2) 0.4 0.5
Type 2 cycle air cooled
Carburetor Diaphragm type
Fuel Gasoline/oil Mix 50 to 1
Definitions
1Blade 4Recoil starter 7Carburetor 10 Rear Handle
2Blunt extention 5Fuel tank cap 8Engine switch 11 Muffler
3Front Handle 6Choke lever 9Throttle lever
Disposal of Packaging
Remove all protective packaging. Make sure you properly dispose of, or recycle the packaging materials where possible. Comply with the
applicable waste disposal laws in your area.

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554285 - Masport Hedge Trimmer OM - July 2010
Preparation
Unpack the machine and its accessories and check that the following items are available:
• Machine with proper parts
• Accompanying tools
• Engine instruction manual
• This manual
Operation
FUEL
Use mixed fuel whose mixture ratio is 50(gasoline) : 1(oil) and a proper lubrication oil for the 2-cycle engine.
BE CAREFUL WITH FIRE! THE FUEL IS EXTREMELY FLAMMABLE
STARTING
Move at least 3 meters away from the place of refuelling. Place the Hedge Trimmer on a clean area of ground make sure that the cutting
blades do not come into contact with the ground or any other objects.
Cold starting (When the engine is cold or it has been stopped for more than 5 minutes or when fuel is added to the engine.)
1. Push the I-O switch (1) to “I” position. (Fig.1)
2. Give a gentle push on the primer pump (A) repeatedly (7 to 10 times) until fuel comes into the primer pump. (Fig. 2)
3. Move the choke lever (B) to position “START” (Fig. 2)
4. Hold the unit down firmly so you will not lose control while cranking the engine. If not held down properly, the engine could pull you off
balance or swing the cutting blade into an obstruction or your body.
5. Pull the starter handle slowly for 10 to 15 cm, and check the location of pressure point.
6. Pull strongly when pressurization can be felt and start the engine.
7. When the engine starts, return the choke lever to “Run” (Fig. 3). Please note that the choke lever will return to “Run” position
automatically when the throttle lever is operated and the throttle is opened.
8. Run the engine for approximately one minute at a moderate speed before applying full speed.
Note:
• If the starter handle is pulled repeatedly when the choke lever remains at “Start” position, the
engine will not start easily due to excessive fuel intake.
• In case of excessive fuel intake, remove the spark plug and pull the starter handle slowly to
remove excess fuel. Also, dry the electrode section of the spark plug.
Hot starting: (Restarting immediately after the engine has stopped) When restarting a hot engine,
first try the above procedure:1,4,5,6. If the engine does not start, repeat above steps 1-8.
Note:
Do not pull the starter rope to its full extent and do not allow the starter grip to be retracted without control, ensure that it is retracted slowly.
Common fuel/oil ratios
50:1
2 %
80 mL4 ltr
402
201
101/2

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554285 - Masport Hedge Trimmer OM - July 2010
STOPPING
1. Release the throttle lever completely.
2. Push the I-O switch (on/off switch) to “O” position, the engine rotation will become low and the engine will stop.
WHEN YOU RELEASE THE THROTTLE LEVER, IT TAKES A FEW MOMENTS BEFORE THE
CUTTING BLADES STOP.
Basic Working Techniques
Operation
The rear handle can be set in five positions as desired. To make it free for positioning, pull
the lock lever.
(See the illustrations at the left.)
Before adjusting the handle, be sure to stop the engine.
Keep the rear handle upward during operation, irrespective of position of the cutting blade.
Top trimming
Hold the handle firmly with both hands, and keep the machine body horizontal. Then, slightly
incline the cutting blade in the cutting direction and trim the shrub while swaying as if
drawing an arc.
Side trimming
Hold the machine body vertical and trim the shrub upward from the bottom keeping the
cutting blade as much apart from your body as possible.

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554285 - Masport Hedge Trimmer OM - July 2010
Preoperational Checks and Tune-Up
GEARS
• In every 10-20 hours, inject a proper amount of grease through the grease
nipple installed in the Gear case of the Hedge Trimmer
BLADES
• Stop the engine before lubricating the blades during the operation.
Long Term Storage
1. Clean every part, repair faulty sections, and apply a thin coat of oil on metalic parts to prevent rust.
2. If the Hedge Trimmer is to be stored for long periods, drain the fuel from the tank, then start the engine and keep the engine running
until it stops to consume all the fuel left in the carburetor.
3. Store the Hedge Trimmer in a place free from excessive humidity so as to prevent the dust from soiling the machine.
4. Remove the spark plug, inject a small amount of engine oil through the spark plug hole. Then pull the recoil starter a few times to put a
thin coat of oil on the cylinder. Install the spark plug again when the piston has stopped at a top dead point.
Inspection & Maintenance Checklist

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554285 - Masport Hedge Trimmer OM - July 2010
The maintenance or repair work by the user is limited to those activities as described in this instruction manual. All other work is to be
done by Authorised Service Agents. Use only genuine spare parts and accessories. Use of non-approved accessories and tools means
increased risk of accidents and injuries. Masport will not accept any liability for accidents or damage caused by the use of any non-
approved attachment or accessories.

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554285 - Masport Hedge Trimmer OM - July 2010
Head Office - New Zealand
1-37 Mt Wellington Highway, Panmure, Auckland 1060
P.O. Box 14 349, Panmure, Auckland 1741