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English (Original Instructions)

Do not operate the saw using only one 

hand.
Engines produce carbon monoxide which 

is an odorless, deadly poison. Do not 

operate in an enclosed area.
Wear non-slip, heavy-duty protective 

gloves when handling the chainsaw.

Always wear safety boots with non-slip 

sole.
Use unleaded petrol intended for motor 

vehicle use with an octane rating of 91 [(R 

+ M)/2] or higher. This product is powered 

by 2-stroke cycle engine and requires pre-

mixing petrol and 2-stroke lubricant.

Bar and chain lubricant

Use 2-stroke oil for air cooled engines.

Regulatory Compliance Mark (RCM). 

This product meets applicable regulatory 

requirements.
Guaranteed sound pressure and sound 

power lever

Set ignition switch to RUN (I) position.

Make sure chain brake is disengaged.

Fully press and release primer bulb 10 

times.

Pull choke lever all the way out. This also 

sets the throttle to fast idle.

Pull starter until engine attempts to start 

(no more than 5 pulls).

Push choke lever all the way in.

Pull starter until engine runs (6x Max).

Chain brake ON.

Squeeze and release throttle.
Mix the fuel mix thoroughly and also each 

time before refueling.

Add bar and chain oil (to the bar and chain 

reservoir) every time that fuel is added to 

the chainsaw’s fuel tank.
Mix fuel outdoors where there are no 

sparkles or flames.
Do not smoke when mixing fuel or filling 

fuel tank.

 

Fuel and oil
Rotate to adjust chain tension
"+" = Tighten the chain
"-" = Loosen the chain
Moving direction of the chain
H = High speed adjustment needle
L = Low speed adjustment needle
T = Idle adjustment screw

Lock the filter access cover.

Unlock the filter access cover.

Ignition switch:
I = ON, O = Stop

Set the brake lever to Brake (Stop) position

SERVICE

Servicing requires extreme care and knowledge 

and  should  be  performed  only  by  a  qualified  service 

technician. For service we suggest you return the product 

to your nearest authorised service center for repair. When 

servicing, use only identical replacement parts.

 WARNING

To avoid serious personal injury, do not attempt 

to use this product until you read thoroughly and 

understand completely the operator’s manual. If you 

do not understand the warnings and instructions in the 

operator’s manual, do not use this product. Call Ryobi 

customer service for assistance.

Summary of Contents for RCS5145N

Page 1: ...RCS5145N PETROL CHAINSAW Important It is essential that you read the instructions in this manual before assembling maintaining and operating this machine...

Page 2: ...g how your saw works Do not operate a chainsaw that is damaged improperly adjusted or not completely and securely assembled Be sure that the saw chain stops moving when the throttle control trigger is...

Page 3: ...trained to do so Beware of the emission of exhaust gases lubricant mist and saw dust This product is very noisy when operating to prevent long term hearing damage wear hearing protection and keep othe...

Page 4: ...aw chain 7 Use only replacement bars and chains specified by the manufacturer or the equivalent NOTE Refer to Operation in this manual for information on kick back and how to avoid serious personal in...

Page 5: ...hain brake ON Squeeze and release throttle Mix the fuel mix thoroughly and also each time before refueling Add bar and chain oil to the bar and chain reservoir every time that fuel is added to the cha...

Page 6: ...Chain type 0 325 low profile full complement Drive sprocket 7 teeth x 0 325 Engine displacement 51 cm3 Maximum engine power ISO 7293 2 0 kW Recommended maximum engine speed with cutting attachment 11...

Page 7: ...n of the tip of the guide bar or when the wood closes in and pinches the saw chain in the cut Contact at the upper portion of the tip of the guide bar may cause the chain to dig into the object and st...

Page 8: ...synthetic 2 stroke lubricant only Mix 2 lubricant into the petrol This is a 50 1 ratio Mix the fuel thoroughly and also each time before refuelling Mix in small quantities Do not mix quantities large...

Page 9: ...NG A WARM ENGINE Follow the instructions for starting a cold engine steps 1 8 but do not attempt to start in the full choke position skip step 5 Push and release primer bulb 10 times Pull the choke ou...

Page 10: ...cut for you exert only light downward pressure Forcing the cut could result in damage to the bar chain or engine 6 Release the throttle trigger as soon as the cut is completed allowing the engine to...

Page 11: ...ng the right hand side from operator s position of the chain brake lever hand guard and pull towards the front handle until you hear a click FELLING TREES HAZARDOUS CONDITIONS See figure 27 WARNING Do...

Page 12: ...t is a large root extending from the trunk of the tree above the ground Remove large buttress roots prior to felling Make the horizontal cut A into the buttress first followed by the vertical cut B Re...

Page 13: ...DANGER Never start the engine before installing the guide bar chain drivecase cover and clutch drum Without all these parts in place the clutch can fly off or explode exposing the user to possible se...

Page 14: ...ntly and tension as required CAUTION A chain tensioned while warm may be too tight upon cooling Check the Adjusting the chain tension before next use CHAIN MAINTENANCE See figure 51 52 WARNING Check t...

Page 15: ...iled check the depth gauge clearance Use a flat file B not provided and a depth gauge jointer C not provided to lower all gauges uniformly Use a 0 6 mm 0 025 inch depth gauge jointer After lowering ea...

Page 16: ...THE ENGINE See figure 66 67 Clean the engine fins and flywheel fins with compressed air or a brush periodically Dangerous overheating of the engine may occur due to impurities on the engine WARNING Ne...

Page 17: ...stale and leave varnish and gum in the fuel system 3 Drain all bar and chain lubricant from tank into a container approved for lubricant 4 Clean all foreign material from the saw 5 Store it in a well...

Page 18: ...ettor adjustment Engine starts but will not run properly at high speed Carburettor requires H High jet adjustment Contact a service dealer for carburettor adjustment Engine does not reach full speed a...

Page 19: ...s on the guide bar contact a service dealer Bar and chain running hot and smoking Chain brake engaged Release chain brake refer to Operation operating chain brake earlier in this manual Chain tension...

Page 20: ...tronic Industries Australia Pty Ltd Level 1 660 Doncaster Road Doncaster VIC 3108 Australia Techtronic Industries New Zealand Ltd 18 26 Amelia Earhart Avenue Mangere Auckland 2022 New Zealand 96043901...

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