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8

English (Original Instructions)

no objects or obstructions which could come in contact 

with the bar and chain are in the immediate vicinity.

2. 

Hold the front handle firmly with the left hand and put 

your right foot onto the base of the rear handle.

NOTE:

 In the following starting instruction, when the choke 

lever is pulled all the way out to the 

START

 position, the 

throttle is set for starting. To reset the throttle to the 

RUN

 

position, squeeze and then release the throttle trigger.

STARTING A COLD ENGINE

See figure 3. See figure 8 - 14.

1.  Make sure the chain brake is in the brake position 

(Fig.3, B) by pushing forwards on the lever/hand 

guard.

2.  Set the ignition switch to the run (I) position.

3.  Fully press and release the primer bulb 10 times.

4.  Pull choke lever (Fig.11, 5) all the way out to full 

position. The partial throttle position is automatically 

set when the choke lever is set at full choke. 

5.  Pull starter (Fig.12, 7) until engine attempts to start. 

Slowly pull the starter grip out for a short distance until 

you feel the starter engage, then briskly pull straight 

up. Do not pull to the end of the rope; this may damage 

the starter. Hold onto the grip during rewinding. Pull 

the  starter  rope  until  the  first  firing  of  the  engine  is 

heard (no more than five pulls).

NOTE:

 A new unit may require additional pulls.

6.  Push choke lever (Fig.13, 5) all the way in.

7.  Pull starter until engine runs.

8.  Depress the trigger release. Squeeze and then release 

the throttle trigger (Fig.14) to return the engine to idle 

speed. Then you MUST release the brake lever to 

RUN

 position by pulling back on the brake lever/hand 

guard before accelerating the engine or cutting wood.

 

 CAUTION

Failure to release partial throttle when chain brake lever 

is in the brake position will result in serious damage to 

the unit. Never squeeze and hold the throttle trigger 

while the chain brake is in the brake position.

Now you are ready to pick up the saw. Use the proper 

grip for both handles. Refer to “Operation-proper grip on 

handles” later in this manual for additional information.

STARTING 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 out and push it back to the original run position.

STOPPING THE ENGINE

See figure 15.

Release the throttle trigger and let the engine return to 

idle. To stop the engine, move the ignition switch to the “O” 

stop position (17). Do not put the chainsaw on the ground 

when the chain is still moving. For additional safety, set 

the chain brake when the saw is not in use.
In the event that the ignition switch will not stop the saw, 

pull the choke lever out to the fully extended position (Full 

Choke) and engage chain brake to stop the engine. If the 

ignition switch will not stop the saw when set to the “O” 

stop position, have the ignition switch repaired before 

using the chainsaw again to prevent unsafe conditions or 

serious injury.

IMPORTANT:

  When  you  have  finished  using  the  saw, 

relieve tank pressures by loosening the chain lubricant 

and fuel mix caps. Then retighten the caps. Cover the 

sharp chain and bar with the appropriate scabbard. Allow 

the engine to cool before storing.

PREPARING FOR CUTTING
Proper clothing for safety

See figure 16.

 

Wear safety working clothes (A). Always wear heavy, 

long trousers (B), boots (C), and gloves (D). 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 (E), hearing (F), and head (G) protection 

when operating this equipment.

Proper grip on handles

See figure 17 - 18.

Refer to “Specific Safety Rules – proper clothing for safety” 

earlier in this manual for appropriate safety equipment.

 

Wear non-slip gloves for maximum grip and protection.

 

Hold the saw firmly with both hands. Always keep your 

left hand on the front handle and your right hand on 

the rear handle so that your body is to the left of the 

chain line.

 WARNING

Never use a left-handed (cross-handed) grip or any 

stance that would place your body or arm across the 

chain line.

 

Maintain a proper grip on the saw whenever the engine 

is running. The fingers should encircle the handle and 

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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