Mounting Guide Bar And Saw Chain; Chain Brake; Fuel - stayer OLMO G1-250 Manual De Instrucciones

spark plug"). Always wear protective gloves!
Do not start the chain saw before it has been
completely assembled and checked.
5.1 Assembling the guide bar and saw chain
(Fig. 26)
Always use the monkey key (25) as delivered together with
the chain saw for carrying out the following work.
To assemble the guide bar (6) and chain (5), put the chain
saw on a stable surface and carry out the following steps:
OLMO G1-250
1. Release the chain brake (4) by pulling the hand guard (4)
in the direction of the arrow.
2. Unscrew the retaining nut (8).
3. Carefully extend the pinion guard (10), extract it from its
hitch and remove it.
OLMO G2-400 / OLMO G3-450 / OLMO22-400
1. Release the chain brake (4) by pulling the hand guard (4)
in the direction of the arrow.
2. Unscrew the retaining nut (8).
3. Carefully extend the pinion guard (10), extract it from its
hitch and remove it.
4. Turn the adjusting screw of the chain (5) to the left
(counterclockwise) until the pin is located at the right
stopper.
5. Position the guide bar (6) (Fig. 29).
6. Lift the chain (5) above the pinion (10). Using your right
hand, guide the chain (5) in the upper chain guide slot of
the guide bar (6) (Fig. 30).
Take into account that the cutting edges along the
upper portion of the chain must be orientated in the
direction of the arrow!
7. Pull the chain (5) around the guide bar (6) in the direction
of the arrow.
8. Pull the guide bar (6) with your hand completely up to its
nose. Make sure that the blade of the chain (5) fits within
the slots of the guide bar (6) (Fig. 31).
9. First, push the pinion cover (10) to the inside of its hitch
(A). Make sure that the pin (B) of the tightener of the chain
(5) is within the hole in the guide bar (6). Then push it over
the retaining bolt whilst lifting the saw chain (5) over the
chain ratchet (9).
10. Manually tighten the retaining screw (8) (Fig. 32).
Tightening the chain
1. Position the pinion casing and apply the 2 fastening
screws (8), then tighten the chain (6) by means of the
screw (16) such that it becomes adjusted without excess
tension because you might break the chain.
2. Position the pinion casing, adjust screws and, finally,
adjust everything again.
Checking the tension of the chain
The tension of the chain (5) will be correct if the chain
rests against the bottom side of the guide bar (6) and may
still be rotated by hand.
While you are doing this, the chain brake (4) must be in a
released state.
Check the tension of the chain (5) frequently – new chains
tend to elongate during use!
When checking the tension of the chain, the motor must be
switched off-
ENGLISH
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42
REMARK: Alternating use of 2 – 3 chains is recommended.
5.2 Chain brake (Fig. 35)
The OLMO chainsaw has a chain brake (4) actuated by
inertia as a standard equipment. When there are recoils
due to the contact of the tip of the guide bar (6) with the
wood (refer to "SAFETY PRECAUTIONS"), the chain brake
(4) will stop the chain by inertia if the recoil is sufficiently
strong.
The chain (5) will stop in a fraction of a second.
The chain brake has been installed to lock the saw
chain before operating it and to stop it immediately in
case of emergency.
IMPORTANT: NEVER start the chain saw when the
chain brake is actuated! If you do so, you may rapidly
cause great damage to the engine! ALWAYS release the
chain brake before starting to work.
REMARK: The chain brake is a very important safety
device and, as any other component, it is exposed to
normal wear and tear. Regular checking and
maintenance are important for your own safety and
must be carried out by a STAYER Service Center.
Actuating the chain brake (Fig. 36)
When recoil is sufficiently strong, the sudden acceleration
of the guide bar (6) combined with the inertia of the hand
guard (4) will automatically actuate the chain brake.
To actuate the chain brake (4) manually, simply push the
hand guard forward (towards the tip of the saw) with your
left hand (arrow 1).
Releasing the chain brake
Pull the hand guard (4) towards yourself (arrow 2) until you
feel that it gets caught.
5.3 Fuel (Fig. 37)
(OLMO G1-250, OLMO G2-400, OLMO G3-450)
This chain saw operates with mineral fuel products
(gasoline and oil).
Fuel mixture
The chain saw engine is a highly efficient 2-stroke engine. It
runs with a mixture of gasoline and oil for 2-stroke engines.
The engine has been designed run with unleaded regular
gasoline having at least 95 octanes. Should such a fuel not
be available, you may use a higher octane fuel. This will not
affect the engine.
To achieve optimal engine performance and to protect
your health and environment, use unleaded gasoline only.
To lubricate the engine, use 2-stroke engine oil (quality
rating: JASO, FC, ISO, EGO) that is added to the gasoline.
The correct proportion of the mixture is:
25:1 i.e. 25 parts of gasoline and 1 part of oil.
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To secure uniform wear of the guide bar, the guide bar
should be turned around each time the chain is replaced.
Be especially careful when manipulating
gasoline.
Avoid any kind of flames or fire. Do not smoke
(explosion hazard).
Do not use ready-mixed fuel from fuel stations.