6C-3. Checking The Chain Tension; 6C-4. Retensioning The Saw Chain; For All Models Chain Brake; Fuel - Makita EA3500S Manual De Instrucciones

6c-3. Checking the chain tension (Fig. 48)
The tension of the chain is correct if the chain rests against
the bottom side of the guide bar and can still be easily turned
by hand.
While doing so the chain brake must be released.
Check the chain tension frequently - new chains tend to get
longer during use!
When checking the chain tension the engine must be
switched off.
NOTE: It is recommended to use 2-3 chains alternatively.
In order to guarantee uniform wear of the guide bar the bar
should be turned over whenever replacing the chain.
6c-4. Retensioning the saw chain (Fig. 49)
All that is necessary to retension the saw chain is to loosen
the quick tensioner (2) slightly as described under "Mounting
the guide bar and saw chain".
Tension the chain as already described.
For all models
6-5. Chain brake (Fig. 50)
The EA3500S-EA3503S comes with an inertia chain brake as
standard equipment. If kickback occurs due to contact of the
guide-bar tip with wood (see SAFETY PRECAUTIONS, page
17), the chain brake will stop the chain through inertia if the
kickback is sufficiently strong.
The chain will stop within a fraction of a second.
The chain brake is installed to block the saw chain
before starting it and to stop it immediately in case of an
emergency.
IMPORTANT: NEVER run the saw with the chain brake
activated (except for testing, see "Testing chain brake")!
Doing so can very quickly cause extensive engine
damage!
ALWAYS release the chain brake before starting the
work!
Engaging the chain brake (braking) (Fig. 51)
If the kickback is strong enough the sudden acceleration of
the guide bar combined with the inertia of the hand guard (1)
will automatically actuate the chain brake.
To engage the chain brake manually, simply push the hand
guard (1) forward (towards the tip of the saw) with your left
hand (arrow 1).
Releasing the chain brake
Pull the hand guard (1) towards you (arrow 2) until you feel it
catch. The brake is now released.

6-6. Fuel

CAUTION:
This saw is powered by mineral-oil products (gasoline and
oil).
Be especially careful when handling gasoline.
Do not smoke. Keep tool well away from open flames,
spark, or fire (explosion hazard).

Fuel mixture

This tool is powered by a high-performance air-cooled
two-stroke engine. It runs on a mixture of gasoline and two-
stroke engine oil.
The engine is designed for unleaded regular gasoline with
22
a min. octane value of 91 ROZ. In case no such fuel is
available, you can use fuel with a higher octane value. This
will not affect the engine.
Model EA3502SG accepts Brazilian gasoline (E25).
In order to obtain an optimum engine output and to
protect your health and the environment use unleaded
fuel only.
To lubricate the engine, use a synthetic oil for two-stroke air-
cooled engines (quality grade JASO FC or ISO EGD), which
has to be added to the fuel. The engine has been designed
for use of MAKITA high-performance two-stroke engine oil
and a mixture ratio of only 50:1 to protect the environment.
In addition, a long service life and reliable operation with a
minimum emission of exhaust gases are ensured.
MAKITA high-performance two-stroke engine oil is available
in the following sizes to suit your individual requirements:
1 l
100 ml
In case MAKITA high-performance two-stroke engine oil is not
available, it is urgently recommended to use a mixture ratio of
50:1 with other two-stroke engine oils, as otherwise optimum
operation of the engine cannot be guaranteed.
Caution: Do not use ready-mixed fuel from petrol
stations.
The correct mixture ratio:
50:1 when using MAKITA high-performance two-stroke
engine oil, i. e. mix 50 parts gasoline with 1 part oil.
50:1 when using other synthetic two-stroke engine oils
(quality grade JASO FC or ISO EGD), i. e. mix 50
parts gasoline with 1 part oil.
Gasoline
1,000 ml (1 litre)
5,000 ml (5 litres)
10,000 ml (10 litres)
NOTE:
For preparing the fuel‑oil mixture first mix the entire oil
quantity with half of the fuel required, then add the remaining
fuel. Thoroughly shake the mixture before filling it into the
chain saw tank.
It is not wise to add more engine oil than specified to
ensure safe operation. This will only result in a higher
production of combustion residues which will pollute the
environment and clog the exhaust channel in the cylinder
as well as the muffler. In addition, fuel consumption will
rise and performance will decrease.
The Storage of Fuel
Fuels have a limited storage life. Fuel and fuel mixtures
age through evaporation, especially at high temperatures.
Aged fuel and fuel mixtures can cause starting problems
and damage the engine.Purchase only that amount of fuel,
which will be consumed over the next few months. At high
temperatures, once fuel has been mixed it should be used up
in 6-8 weeks.
Store fuel only in proper containers, in dry, cool, secure
locations!
50:1
+
20 ml
100 ml
200 ml