GGP Italy SPA Brush Cutter STAR_28H 28HD 38H 38HD Instructions Manual

							LONG PERIODS OF DISUSE
If you are not going to use
the machine for a period of more than 2-3
months, we recommend you do a few things
before putting it away. This will make it easier
when you want to use the machine again and will
also prevent permanent damage to the engine.
•Storage
Before putting the machine away:
–Empty the fuel tank.
–Start the engine and run it idle until it comes to
a halt, so that it uses up all the fuel that is left
in the carburettor.
–Wait for the engine to cool down and remove
the spark plug
–Pour a teaspoon of fresh oil into the spark plug
hole.
–Pull the starter rope several times to deliver oil
to the cylinder.
–Replace the spark plug with the piston in the
dead end upper position (visible from the
spark plug slot when the piston is at maximum
stroke).
IMPORTANT
•Restarting work
When you wish to start using the machine again:
–Remove the spark plug.
–Pull the starter rope a few times to eliminate
excess oil.
–Check the spark plug as described in chapter
“Checking the spark plug”.
–Prepare the machine as indicated in the para-
graph entitled “Preparing for work”. 16
MAINTENANCE AND STORAGE / TROUBLESHOOTINGEN
9. TROUBLESHOOTING
1)The engine will
not start or will not
keep running
2)The engine starts
but is lacking in
power
3)The engine runs
irregularly and lacks
in power when
revved–Incorrect starting procedure
–Dirty spark plug or incorrect distance
between the electrodes
–Air filter clogged
–Carburetion problems
–Air filter clogged
–Carburetion problems
–Dirty spark plug or incorrect distance
between the electrodes
–Carburetion problems–Follow the instructions (see chap-
ter 6)
–Check the spark plug (see chapter
8)
–Clean and/or replace the filter (see
chapter 8)
–Contact your dealer
–Clean and/or replace the filter (see
chapter 8)
–Contact your dealer
–Check the spark plug (see chapter
8)
–Contact your dealer
PROBLEM LIKELY CAUSE SOLUTION 
						

							TECHNICAL SPECIFICATIONS17EN
Engine .................................. 4-stroke air-cooled
Capacity / Power  
Mod. 28H - 28HD ................. 25 cm
3/ 0,81 kW
Mod. 38H - 38HD ................... 35 cm3/ 1,2 kW
Engine rotation speed at tick-over  
Mod. 28H - 28HD..................... 2900-3300 rpm
Mod. 38H - 38HD..................... 2900-3300 rpm
Maximum engine rotation speed 
Mod. 28H - 28HD................. 10500-11000 rpm
Mod. 38H - 38HD................. 10500-11000 rpm
Maximum tool rotation speed  
Mod. 28H - 28HD .............................. 8500 rpm
Mod. 38H - 38HD .............................. 8500 rpm
Spark plug ................ NGK CM5H (or equivalent)
Fuel: .............. Unleaded petrol - at least 90 N.OFuel tank capacity
Mod. 28H - 28HD ................................ 550 cm
3
Mod. 38H - 38HD ................................ 650 cm3
Oil tank capacity 
Mod. 28H - 28HD .................................. 80 cm3
Mod. 38H - 38HD ................................ 100 cm3
Maximum permitted blade diameter
3-point blade  .................................. Ø 255 mm
4-point blade  .................................. Ø 255 mm
Saw blade (excluding Mod.
28H - 28HD - 38H)  ......................... Ø 255 mm
Weight 
1)
“MONO” models  ................. from 5,3 to 7,1 kg
“DUPLEX” models  .............. from 5,5 to 8,2 kg
1)Weight as per standard ISO 11806 (without
fuel, cutting devices and guards)  
10. TECHNICAL SPECIFICATIONS
Phonometric Recordings and Vibrations
Model ........................................ 28H 28HD 38H 38HD
Noise level recorded (ISO 10884) dB(A)
with line cutter head ............... 108,1 107,9 106,3 109,7
with 4-point blade ................... 106,0 106,1 103,5 106,5
Noise level at the operator’s ear  (EN 27917) dB(A)
with line cutter head ................ 94,6 95,1 92,1 94,7
with 4-point blade ................... 94,3 91,2 93,2 93,7
Vibrations transmitted to the hand on the front handgrip (“MONO”) (ISO 7916) m/sec
2
at tick-over   ............................ 2,4 – 2,2 –
with line cutter head ................ 8,3 – 5,9 –
with 4-point blade ................... 7,8 – 2,8 –
Vibrations transmitted to the hand on the rear handgrip (“MONO”) (ISO 7916) m/sec
2
at tick-over .............................. 2,0 – 2,9 –
with line cutter head ............... 8,1 – 6,7 –
with 4-point blade ................... 9,2 – 4,7 –
Vibrations transmitted to the hand on the left handgrip (“DUPLEX”) (ISO 7916) m/sec
2
at tick-over   ............................ – 1,3 – 1,3
with line cutter head ............... – 7,2 – 2,1
with 4-point blade ................... – 5,4 – 2,0
Vibrations transmitted to the hand on the right handgrip (“DUPLEX”) (ISO 7916) m/sec
2
at tick-over   ............................ – 1,9 – 1,4
with line cutter head ................ – 7,7 – 3,3
with 4-point blade ................... – 5,3 – 3,7 
						

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