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9

English (Original Instructions)

the thumb be wrapped under the handlebar. This grip 

is least likely to be broken (by a kick-back or other 

sudden reaction of the saw). Any grip in which the 

thumb and fingers are on the same side of the handle 

is dangerous because a slight kick of the saw can 

cause loss of control.

 WARNING

Do not operate the throttle trigger with your left hand 

and hold the front handle with your right hand. Never 

allow any part of your body to be in the chain line while 

operating a saw.

PUSH AND PULL

See figure 19.

The reaction force is always opposite to the direction the 

chain is moving. Thus, the operator must be ready to 

control the pull (A) when cutting on the bottom edge of 

the bar and the push (B) when cutting along the top edge.

NOTE:

 Your chainsaw has been fully factory tested. It is 

normal to find some slight lubricant residue on the saw.

PROPER CUTTING STANCE

See figure 20.

 

Balance your weight with both feet on solid ground.

 

Keep left arm with elbow locked in a “straight arm” 

position (B) to withstand any kick-back force.

 

Keep your body to the left of the chain line (A).

 

Keep your thumb on underside of handlebar (C).

BASIC OPERATING/CUTTING PROCEDURES

Practise cutting a few small logs using the following 

technique to get the “feel” of using your saw before you 

begin a major sawing operation.
1.  Take the proper stance in front of the wood with the 

saw idling.

2.  Accelerate the engine to full throttle just before 

entering the cut by squeezing the throttle trigger.

3.  Begin cutting with the saw against the log.

4.  Keep the engine at full throttle the entire time you are 

cutting.

5.  Allow the chain to 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 idle. Running the 

saw at full throttle without 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. See figure 27 - 28.

 

Cut only wood or materials made from wood; no sheet 

metal, no plastics, no masonry, no non-wood building 

materials.

 

Never allow children to operate your saw. Allow no 

person to use this chainsaw who has not read this 

operator’s manual or received adequate instructions 

for the safe and proper use of this chainsaw.

 

■ Keep  everyone  –  helpers,  bystanders,  children,  and 

animals, a safe distance from the cutting area. During 

felling operations, the safe distance should be at least 

twice the height of the largest trees in the felling area. 

During bucking operations, keep a minimum distance 

of (4.5 m) 15 ft between workers.

 

Always cut with both feet on solid ground to prevent 

being pulled off balance.

 

Do not cut above chest height as a saw held higher is 

difficult to control against kick-back forces.

 

Do not fell trees near electrical wires or buildings. 

Leave this operation for professionals.

 

Cut only when visibility and light are adequate for you 

to see clearly.

ADJUSTING THE CARBURETTOR

See figure 22 - 24.

Before adjusting the carburettor, clean the air filter (A) and 

the starter cover vents (B). Allow the engine to warm up 

prior to carburettor adjustment. Refer to “Maintenance” 

later in this manual.
The carburettor is factory set and should not require 

adjusting. The carburettor will permit only limited 

adjustment of the “L” (Low Jet) and “H” (High Jet) needles. 

Any adjustment should be done by a service dealer.
Under no circumstances should the “L” (Low Jet) and 

“H” (High Jet) needles be forced outside the range of 

adjustment.

 

 CAUTION

Serious damage may occur to the engine if improper 

adjustments are made to the “L” and “H” needles. Do 

not force the “L” and “H” needles outside the adjustment 

range!

Summary of Contents for RCS4640N

Page 1: ...RCS4640N PETROL CHAINSAW Important It is essential that you read the instructions in this manual before assembling maintaining and operating this machine...

Page 2: ...assembled Be sure that the saw chain stops moving when the throttle control trigger is released GENERAL PRECAUTIONS Know your tool Read the operator s manual carefully Learn the saw s applications an...

Page 3: ...g protection reduces the ability to hear warnings shouts or alarms The operator must pay extra attention to what is going on in the work area Keep bystanders and animals out of the work area Do not al...

Page 4: ...Symptoms include episodic blanching of fingers in response to cold numbness and tingling In extreme cases it will cause loss of touch sensation Anti vibration system does not guarantee that you will...

Page 5: ...and bar lubricant to the chain and bar oil reservoir every time you add fuel to the chain saw fuel tank Mix fuel outdoors where there are no sparkles or flames Do not smoke when mixing fuel or filling...

Page 6: ...ngth 375 mm Chain pitch 8 26 mm 0 325 Chain gauge 1 27 mm 0 05 Chain type 0 325 low profile full complement Drive sprocket 7 teeth x 0 325 Engine displacement 46 cm3 Maximum engine power ISO 7293 1 8...

Page 7: ...WARNING Kick back occurs when the moving chain contacts an object at the upper portion 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...

Page 8: ...nt 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 larger than usable in a 30 day p...

Page 9: ...t do not attempt to start in the full choke position skip step 5 Push and release primer bulb 10 times Pull the choke out and push it back to the original run position STOPPING THE ENGINE See figure 1...

Page 10: ...trigger as soon as the cut is completed allowing the engine to idle Running the saw at full throttle without a cutting load may result in unnecessary wear to the chain bar and engine 7 Do not put pres...

Page 11: ...quipment Do not cut down trees having an extreme lean or large trees with rotten or dead limbs loose bark or hollow trunks Have these trees pushed or dragged down with heavy equipment then cut them up...

Page 12: ...operations stand on the uphill side so that the cut off section of the log cannot roll over you Sometimes it is impossible to avoid pinching with just standard cutting techniques or difficult to predi...

Page 13: ...he cutters should face in the direction of chain rotation If they face backwards turn the loop over 7 Place the chain drive links into the bar groove 8 Position the chain so there is a loop at the bac...

Page 14: ...e A Too low increases the potential for kick back Not low enough decreases cutting ability If the cutter teeth hit hard objects such as nails and stones or are abraded by mud or sand on the wood have...

Page 15: ...any of the following faults should be replaced Wear inside the bar rails which permits the chain to lie over sideways Bent guide bar Cracked or broken rails Spread rails In addition lubricate guide b...

Page 16: ...will seriously damage the engine WARNING Silencer surfaces are very hot during and after operation of the chainsaw Keep all body parts away from the silencer Serious burns may occur if contact is made...

Page 17: ...or damaged parts Before each use For loose fasteners Before each use For loose parts Before each use Chain brake function Before each use For fuel leaks Before each use Inspect and Clean Bar Before ea...

Page 18: ...carburettor 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 s...

Page 19: ...cant is 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 te...

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 96099401...

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