Extraordinary Maintenance - ST. SpA A 3700 Manual De Instrucciones

MAINTENANCE AND STORAGE
BAR MAINTENANCE (Fig. 25)
To avoid asymmetrical wear on the bar, make sure
it is turned over periodically.
To keep the bar in perfect working order, proceed
as follows:
– grease the bearings on the nose sprocket (if
present) with the syringe;
– Clean the bar groove with the scraper (not in-
cluded);
– clean the lubrication holes;
– with a flat file, remove burr from the edges and
level off the guides.
Replace the bar whenever:
– the groove is not as deep as the height of the
drive links (which must never touch the bottom);
– the inside of the guide is worn enough to make
the chain lean to one side.

EXTRAORDINARY MAINTENANCE

All maintenance operations not foreseen in this
manual must be performed exclusively by your
dealer.
All and any operations performed in unauthorised
centres or by unqualified persons will totally invali-
date the warranty.
STORAGE
After every work stint, clean the machine thor-
oughly to remove all dust and debris, and repair
or replace any faulty parts.
The machine must be stored in a dry place away
from the elements and with the bar cover correctly
fitted.
LONG PERIODS OF DISUSE
IMPORTANT
the machine for a period of more than 2­3 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
If you are not going to use
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 (new) 2-stroke engine oil into
the spark plug slot.
– 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).
• 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".
15
EN