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15

English (Original Instructions)

 WARNING

Never  run  the  engine  without  the  air  filter,  serious 

damage could result. Make sure the air filter is correctly 

placed in the air filter cover before reassembly.

CLEANING THE STARTER UNIT

See figure 64 - 65.

Use a brush or compressed air to keep the cooling vents 

of the starter assembly free and clean of debris.

CLEANING 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

Never run the saw without all the parts, including the 

drivecase cover and starter housing, securely in place. 

Because parts can fracture and pose a danger of 

thrown objects, leave repairs of the flywheel and clutch 

to trained service dealer personnel.

NOTE:

 Depending on the type of fuel used, the type and 

amount of lubricant used, and/or your operating conditions, 

the exhaust port and silencer may become blocked with 

carbon deposits. If you notice a power loss with your 

petrol-powered tool, you may need to remove these 

deposits to restore performance. We highly recommend 

that only qualified service technicians perform this service.

CHECKING THE FUEL FILTER

See figure 68.

Check  the  fuel  filter  (A)  periodically.  Replace  it  if 

contaminated or damaged.

REPLACING THE SPARK PLUG

See figure 69 - 70.

This engine uses a Champion RCJ-6Y spark plug with 

0.63 mm (0.025 inch) electrode gap. Use an exact 

replacement and replace every six months, or more 

frequently if necessary.
1.  Loosen the spark plug by turning it anticlockwise with 

a spanner.

2.  Remove the spark plug.

3.  Hand thread the new spark plug, turning it clockwise.

NOTE:

 Be careful not to cross-thread the spark plug. 

Cross-threading 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 with the silencer.

SPARK ARRESTOR

This product is fitted with a spark arrestor screen (inside the 

muffler / silencer). If loss of engine power is experienced 

the muffler may need to be replaced. Take the tool to a 

service dealer to have this maintenance performed.

CHAIN BRAKE

See figure 71 - 72.

 

Remove the clutch cover and clean the chain brake 

components. Check wear on the brake band (A). 

If brake band is worn or deformed, have it serviced 

at your nearest authorised service dealer. The band 

thickness should not be less than 0.60 mm (0.024 

inch), or worn halfway through.

 

Always keep the chain brake mechanism clean (B) 

and lightly lubricate the linkage (C).

 

Always test the chain brake performance after 

servicing or cleaning. Refer to “Operation – Operating 

Chain Brake” earlier in this manual for additional 

information.

 

Check and, if damaged, replace the chain catcher.

TRANSPORTING THE PRODUCT

 

When carrying the product for short distance (from 

one working area to the next), always apply the chain 

brake so that the product is blocked with the engine 

off.

 

Never carry or transport the product while the it is 

running.

 

To prevent the leakage of fuel or oil and damage in 

general, secure the product when it is transported.

 

Check the fuel and chain lubricant tanks for leaks.

Drain the tanks prior to transport.

STORING THE CHAINSAW (1 MONTH OR LONGER)

1.  Drain all fuel from tank into a container approved for 

petrol.

2.  Run the engine until it stops. This will remove all 

fuel-lubricant mix that could become 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-ventilated place that is inaccessible 

to children.

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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