F.F. Group GBC 540C PRO, Original Instructions Manual

Page: 12 / 52

| English 12
GBC 540C PRO
Items
Before each use During each refuelling stop After each use Ever
y week or ever
y 10 hrs
of operation Ever
y month or ever
y 50 hrs
of operation Ever
y 12 months or ever
y 100
hrs of operation
Control
handles
Check √ √ √
Air filter
Check and
clean
√* √*
Replace
√
Spark
plug
Check and
adjust
√*
Replace
√
Fuel
filter
Clean
√*
Replace
√
Carbura-
tor
Idle check
√
Service
√**
Bevel
gear
grease
Check and
fill
√
Fuel
tube
Check
√**
Cooling
inlets Check and
clean
√ √ √
Cutting
equip-
ment
Check
√ √ √
Cutting
guard
Check
√ √ √
Harness Check √ √ √
*These items should be replaced if needed.
**These items should be maintained and repaired only by
authorised dealer, that have the appropriate tools and the
required mechanical proficiency.
EXHAUST PORT AND SILENCER
Depending on the type of fuel and mixture ratio
used and the operating conditions, the exhaust
port and silencer may become blocked because of
carbon deposits. If you notice a power loss when
operating your unit, refer to a qualified service
center to maintain your unit.
AIR FILTER
1. Unscrew the bolt from the air filter cover and
remove the cover (Fig. 2.13).
2. Make sure that the air filter is free from dirt and
in a good condition.
3. If the air filter is dirty, remove and clean it.
4. Wash the foam element in a solution of house -
hold detergent and warm water, then rinse
thoroughly, or wash in nonflammable or high
flashpoint solvent.
5. Gently squeeze the oil filter. Allow the foam el -
ement to dry thoroughly.
Frequency
6. Soak the foam element in clean engine oil and
gently squeeze out any excess oil. The engine
will smoke during initial startup if too much oil
is left in the foam element.
7. Reinstall the air filter and follow the reverse
procedure to put back again the air filter cover.
NOTE: If the engine frequently works under dusty
or other severe circumstances, clean the air filter el -
ement every 10 hours. If necessary, change the air
filter element every 25 hours.
NOTE: Accumulated dust in the air filter will reduce
engine efficiency, resulting in loss of power and high
fuel consumption.
SPARK PLUG
1. Remove the spark plug cable to access the
spark plug.
2. Use an appropriate spark plug tool to carefully
remove the spark plug.
3. Inspect the condition of the spark plug and its
electrode.
4. It must be clean and not worn.
5. Check that the spark plug gap is between 0.6
and 0.7mm (Fig. 8). Replace the spark plug with
a new one if needed.
6. Carefully thread the spark plug into the engine
by hand.
7. Once threaded, use the appropriate spark plug
tool to firmly tighten the spark plug.
8. Re-attach the spark plug wire.
WARNING: Never allow dirt or debris to enter the
cylinder bore. Before removing the spark plug, thor -
oughly clean the spark plug and cylinder head area.
BEVEL GEAR
The bevel gear grease should be replenished with
new lithium based grease every 30 to 40 hours of
operation as shown in Fig. 9. Remove the bolt and
washer. Feed the grease by simultaneously turn -
ing the shaft manually until grease emerges from
the hole. Then refit the bolt and washer.
CLEANING
Use a small soft brush to clean the outside of the
unit. Do not use strong detergents. Household
cleaners that contain aromatic oils such as pine
and lemon and solvents such as kerosene can
damage plastic housing or handle. Wipe off any
moisture with a soft cloth.
TRANSPORT
The engine should be turned off when the unit is
moved between work areas.
WARNING: After the engine has stopped, the muf -
fler is still hot. Do not touch.
Empty the fuel tank and secure the unit from moving
before transporting in a vehicle.
If the blade is fitted, always use the blade guard. Al -
ways place the blade guard on the blade when the
unit is not in use and remember to remove the blade
guard before using the unit again.
STORAGE
WARNING: Never store the unit with fuel in the tank
and always allow the unit to cool before storing.