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5

UK

PROPER CLOTHING FOR SAFETY

Wear close-fitting clothing. Always wear heavy, long
trousers, boots, and gloves. Do not wear jewellery,
shorts, sandals, or go barefoot. Do not wear loose-fitting
clothing, which could be drawn into the engine or catch
the chain or undergrowth. Wear overalls, jeans, or
leggings made of cut-resistant material or ones that
contain cut-resistant inserts. Secure hair so that it is
above shoulder level.

Wear non-slip safety footwear and heavy-duty gloves to
improve your grip and to protect your hands.

Wear eye, hearing, and head protection when operating
this equipment.

REFUELLING (DO NOT SMOKE!)

To reduce the risk of fire and burn injury, handle fuel
with care. It is highly flammable.

Mix and store fuel in a container approved for petrol.

Mix fuel outdoors where there are no sparks or flames.

Select bare ground, stop the engine, and allow it to cool
before refuelling.

Loosen the fuel cap slowly to release pressure and to
keep fuel from escaping around the cap.

Tighten the fuel cap securely after refuelling.

Wipe spilled fuel from the unit. Move 15 m (50 ft.) away
from refuelling site before starting engine.

Never attempt to burn off spilled fuel under
any circumstances.

BASIC PRECAUTIONS IN THE CUTTING/
WORK AREA

Do not operate a chainsaw in a tree.

Do not cut from a ladder: this is extremely dangerous.

Keep bystanders and animals out of the work area.
Do not allow other persons to be nearby during starting
or cutting with the chainsaw.

NOTE:

 The size of the work area depends on the job

being performed as well as the size tree or workpiece
involved. For example, felling a tree requires a larger
work area than making other cuts, i.e., bucking
cuts, etc.

PUSH AND PULL

The reaction force is always opposite to the direction the
chain is moving. Thus, the operator must be ready to control
the PULL when cutting on the bottom edge of the bar and
the PUSH when cutting along the top edge.

NOTE:

 Your chainsaw has been fully factory tested. It is

normal to find some slight oil residue on the saw.

MAINTENANCE PRECAUTIONS

Never operate a chainsaw that is damaged, improperly
adjusted, or is not completely and securely assembled.
Be sure that the saw chain stops moving when the throttle
control trigger is released. If the saw chain moves at idling
speed, the carburettor may need adjusting. Refer to
“Operation – Adjusting Idling Speed” later in this manual.
If the saw chain still moves at idling speed after adjust-
ment has been made, contact a Ryobi service dealer for
adjustment and discontinue use until the repair is made.

WARNING:

All chainsaw service, other than items in the
operator’s manual maintenance instructions, should
be performed by competent chainsaw service
personnel. If improper tools are used to remove the
flywheel or clutch, or if an improper tool is used to
hold the flywheel in order to remove the clutch,
structural damage to the flywheel could occur which
could subsequently cause the flywheel to burst and
serious injury could result.

KICK-BACK

Kick-back is a dangerous reaction that can lead to serious
injury. Do not rely only on the safety devices provided with
your saw. As a chainsaw user, you must take special
safety precautions to help keep your cutting jobs free from
accident or injury.

NOTE:

 Refer to “Operation” later in this manual for added

information on kick-back and how to avoid serious personal
injury.

SPECIFIC SAFETY RULES

Summary of Contents for PCN3840

Page 1: ...ured to Ryobi s high standard for dependability ease of operation and operator safety Properly cared for it will give you years of rugged trouble free performance WARNING To reduce the risk of injury...

Page 2: ...e and knowledge and should be performed only by a qualified service technician When servicing use only identical Ryobi replacement parts For safe operation read and understand all instructions before...

Page 3: ...handle and your left hand on the front handle with your thumbs and fingers encircling the chainsaw handles A firm grip together with a stiff left arm will help you maintain control of the saw if kick...

Page 4: ...roper tool is used to hold the flywheel in order to remove the clutch structural damage to the flywheel could occur and subsequently cause the flywheel to burst KEEPSAFE T TIP ANTI KICK BACKNOSEGUARD...

Page 5: ...felling a tree requires a larger work area than making other cuts i e bucking cuts etc PUSH AND PULL The reaction force is always opposite to the direction the chain is moving Thus the operator must b...

Page 6: ...and head protection when operating this equipment The SAFE T TIP nose guard on the guide bar helps prevent kick back No smoking sparks or open flame when mixing fuel or filling the fuel tank Hold and...

Page 7: ...s Fuel tank capacity 20 25 oz 19 4 oz Oil tank capacity 12 3 oz 11 8 oz Bar lengths 41 50 cm 16 20 in Chain pitch 8 26 mm 325 in Chaingauge 1 27 mm 050 in Chain type Semi Chisel LoPro Drive sprocket 7...

Page 8: ...a kick back reaction by preventing the cutters from digging in too deeply at the kick back zone Only use replacement chain that is equivalent to the original chain or has been certified as a low kick...

Page 9: ...them immediately with clean water If irritation is still present see a doctor immediately Clean up spilled fuel immediately WARNING Check for fuel leaks If any are found correct them before using the...

Page 10: ...nit Never squeeze and hold the throttle trigger while the chain brake is in the brake position CAUTION Failure to release partial throttle when chain brake lever is in the brake position will result i...

Page 11: ...ut a cutting load may result in unnecessary wear to the chain bar and engine 7 Do not put pressure on the saw at the end of the cut WORK AREA PRECAUTIONS See Figure 21 Cut only wood or materials made...

Page 12: ...s B Clear out the undergrowth around the tree to be felled C Do not cut trees near electrical wires or buildings D Consider the direction in which the tree leans E Check the tree for damaged or dead b...

Page 13: ...t touching the chain you should use the wedge to hold the cut open to prevent pinching NOTE When bucking or felling with a wedge you may need to remove the SAFE T TIP anti kick back device to allow th...

Page 14: ...ng that the bar pin groove is at the bottom with the upper and lower edges angled away from the guide bar 12 Replace the clutch cover and bar mounting nuts ASSEMBLING THE BAR AND CHAIN See Figures 3 a...

Page 15: ...sion the chain prior to sharpening NOTE Refer to Maintenance Adjusting the Chain Tension earlier in this manual 3 Use a 4 mm 5 32 in diameter round file and holder Do all your filing at the midpoint o...

Page 16: ...the tightness of the mounting screw before each use Tighten the mounting screw A of the nose guard as instructed below These are specially hardened screws If you cannot install the screw tightly repla...

Page 17: ...o restore performance We highly recommend that only qualified service technicians perform this service CHECKING THE FUEL FILTER See Figure 70 Check the fuel filter A periodically Replace it if contami...

Page 18: ...ion switch to run I position Push and fully release primer bulb 7 times Pull starter three times with choke lever at run If engine does not start move choke lever to choke and repeat normal starting p...

Page 19: ...and chain for damage NOTE The carburettor adjustment needle s are equipped with plastic cap s which prevent anticlockwise rotation from the original factory adjustment If your product exhibits specif...

Page 20: ...by the following approved body SLG Pr f und Zertifizierungs GmbH Certyfikat nr 100885D SLG Pr f und Zertifizierungs GmbH Certyfikat nr 100889O To effect correct application of the health and safety re...

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