Chain Sprocket; Chain Catcher - Stiga 3700 Manual De Instrucciones

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  • MEXICANO, página 71
MAINTENANCE AND STORAGE
STARTING SYSTEM
To avoid overheating and damage to the engine, al-
ways keep the cooling air vents clean and free of
sawdust and debris.
The starter rope must be replaced as soon as it
shows signs of wear.
CLUTCH UNIT (Fig. 20)
Keep the clutch bell free of sawdust and debris, re-
move the casing (as illustrated in Chap. 4.1) and re-
place it correctly when the operation has been
completed. Have your dealer check the greasing of
the internal bearing every 30 hours (approx.).
CHAIN BRAKE
Regularly check the efficiency of the chain brake
and the condition of the metal band around the
clutch bell, remove the casing (as illustrated in
Chap. 4.1) and replace it correctly when the oper-
ation has been completed.
Replace this band when the points in contact with
the clutch bell wear down to about half the thick-
ness of the two ends not subject to rubbing.

CHAIN SPROCKET

Regularly check the condition of the sprocket with
your local retailer and replace it when wear ex-
ceeds the accepted limits.
Do not mount a new chain with a worn sprocket or
vice-versa.
LUBRICATION HOLE (Fig. 21)
Periodically remove the casing (as illustrated in
Chap. 4.1) remove the bar and check that neither
the machine lubrication holes (1) or the bar (2) are
clogged.

CHAIN CATCHER

This is an important safety device that restrains
the chain if it breaks or degrooves.
Regularly check the condition of the chain catcher
and replace it if it gets damaged.
NUTS AND SCREWS
Periodically check that all the nuts and screws are
securely tightened and the handgrips are tightly
fastened.
CLEANING THE AIR FILTER (Fig. 22)
IMPORTANT
sential to guarantee the efficiency and duration of
the machine. Do not work with a damaged filter or
without a filter, as this could permanently damage
the engine.
It must be cleaned after every 8-10 working hours.
Clean the filter as follows:
– Unscrew the knob (1) and remove the cover (2).
– Remove the filter element (3) and tap it gently to
remove any dirt and, if necessary, clean it with a
brush.
– If it is completely clogged, use a screwdriver to
separate the two parts (3a and 3b) and wash
them in clean petrol. If you are using compressed
air, aim the jet so that it blows from the inside to-
wards the outside.
– Replace the two filter element parts by pressing
on the edges until you hear them click into place.
– Fit the filter element (3) and the cover (2) back
on.
CHECKING THE SPARK PLUG (Fig. 23)
Periodically remove and clean the spark plug using
a metal brush to get rid of any deposits.
Check and reset the correct distance between the
electrodes.
Replace the spark plug and fasten it firmly using the
supplied wrench.
The spark plug must be replaced with one with the
same characteristics whenever the electrodes
have burnt or the insulation has worn, and in any
case every 100 working hours.
TUNING THE CARBURETTOR
The carburettor is tuned by the manufacturer to
achieve maximum performance in all situations,
with a minimum emission of toxic gas in compli-
ance with the regulations in force.
When performance is poor, first check that the
chain runs smoothly and the bar rails are not dis-
torted, then contact your dealer to check the car-
buretion and the engine.
EN
Cleaning the air filter is es-
13

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