O-Mac MF 2500, Manual

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7.2.2 Oil characteristics
Only use top quality synthetic oil that is
specifically for two-stroke engines, of JASO
FC minimum specification.
Your dealer can provide you with oils which
have been specifically developed for this
type of engine, and which are capable of
guaranteeing a high level of protection.
The use of these oils makes it possible to
prepare a 2.5% mixture, consisting of 1 part
oil to 40 parts petrol.
7.2.3 Preparation and storage of the fuel
mixture
The chart indicates the amount of petrol and
oil to use to prepare the fuel mixture.
Petrol
2-stroke synthetic
oil
litres litres
1 0.025
2 0.050
3 0.075
5 0.125
10 0.250
To prepare the fuel mixture:
1. Place about half the amount of petrol in a
homologated tank.
2. Add all the oil.
3. Add the rest of the petrol.
4. Close the top and shake well.
IMPORTANT The fuel mixture tends to age.
Do not prepare excessive amounts of the fuel
mixture to avoid the formation of deposits.
IMPORTANT Keep the petrol and fuel mixture
containers separate and easily identifiable to
avoid the mistake of using one in place of the
other.
IMPORTANT Periodically clean the petrol
and fuel mixture containers to remove any
deposits.
7.3 Refuelling
Refuelling must take place when the
machine is switched off and the spark plug
cap removed.
Before refuelling:
1. Shake the fuel mixture container well.
2. Place the machine on a flat stable surface,
with the fuel tank cap facing upwards.
NOTE The following symbol is found near the
fuel tank cap (Fig.32.A):
Fuel mixture tank
3. Clean the fuel tank cap and the surrounding
area to prevent any dirt from entering the
tank during refuelling.
4. Open the fuel tank cap carefully to allow
the pressure inside to decrease gradually.
5. Use a funnel to refill and avoid filling the
tank to the brim.
NOTE When using the machine, the fuel level
can be checked through the tank window
(Fig. 32.B).
7.4 Topping up the chain oil tank
NOTE
The following symbol is found near the
chain oil tank cap (Fig. 32.C):
Chain oil tank
IMPORTANT Only use chainsaw oil or
adhesive oil for chainsaws. Do not use oil
containing impurities so as not to block the
oil filter and to prevent irreparable damage to
the oil pump.