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10

NOTE.

 Ensure the engine is switched off when making any 

adjustments to the chain and bar. 

CAUTION.

 A new chain will stretch after just a few minutes 

of use. Check and, if necessary, re-adjust the chain tension. 

A loose chain causes rapid wear to both the chain and the 

guide bar and could derail causing a major safety hazard.

Filling up with fuel and oil

WARNINGS.

 Petrol is very flammable. Avoid smoking or 

causing any sparks or flames near fuel. Make sure that 

you stop the motor and allow it to cool before refuelling the 

machine. Select outdoor bare ground for fuelling and move at 

least 3m away from the fuelling point before starting the motor. 
 

  Only use oil that is expressly labelled for use with air-

cooled 2-stroke engines. 

DO NOT

 use BIA or TCW  

(2-stroke water-cooling type) mixed oil. 

The recommended mixing ratio is 

PETROL 50: OIL 1

 

  Use unleaded petrol with a minimum Octane number of 

89. If you use petrol with an Octane number lower than 89, 

there is a danger that the engine might overheat and the 

piston seize.

 

  Poor quality petrol or oil may damage sealing rings, fuel 

lines or the fuel tank. Do not use wasted or regenerated 

oil, it can damage the oil pump. 

CAUTION. 

To maximise the lifetime of the engine, avoid the 

following: 
 

  Do not use raw petrol, it will severely damage the engine 

very quickly.

 

  Do not use oil meant for 4-stroke engines, it will cause 

spark plug fouling, exhaust blocking and piston ring 

sticking.

 

  Do not use fuel mixtures that have been left standing 

for one month or more, they can cause clogging of the 

carburettor.

Before storing the chain saw for an extended period, empty 

the fuel tank, clean it then run the motor to empty the 

carburettor.

NOTE.

 Do not discard an unwanted fuel container with 

household waste. It must be taken to an authorised 

repository site.

Mixing fuel (50:1 mixing ratio) 

1. Measure out the quantities of petrol and oil to be mixed.
2. Put some of the petrol into a clean, approved fuel 

container.

3. Pour in all of the oil and mix well.
4. Pour in the rest of the petrol and again mix well (at least 

one minute). 

5. It is very important to mix the two ingredients properly to 

prevent unnecessary engine wear.

6. Make sure that the container is clearly labelled that it is 

2-stroke mixture.

Fuelling the chain saw 

1. The engine must be stopped 

and cool. Place the chainsaw 

on its side with the fuel tank 

cap facing upwards. 

2. Make sure that the fuel 

mixture is well mixed.

3. Remove the fuel tank cap (24). 
4. Fill the fuel tank to about 80% 

of its capacity.

5. Fasten the fuel cap securely 

and wipe up any fuel spillage 

around the machine.

Summary of Contents for PCH37

Page 1: ...1 37CC PETROL CHAINSAW PCH37 INSTRUCTION MANUAL Black Cyan Magenta Yellow Code PCH37 Date 060426 Edition 04 Op DCR ...

Page 2: ...ght to reject any claim where the purchase cannot be verified This warranty does not include damage or defects to the tool caused by or resulting from abuse accidents alterations or commercial or business use It also does not cover any bonus accessories unless the tool is a GMC Platinum Professional model Please ensure that you store your receipt in a safe place Conditions apply to the above warra...

Page 3: ... Warranty claim spare part or user information please phone our Help Line for an immediate response Phone 1300 880 001 in Australia or 0800 445 721 in New Zealand Introduction Your new GMC power tool will more than satisfy your expectations It has been manufactured under stringent GMC Quality Standards to meet superior performance criteria You will find your new tool easy and safe to operate and w...

Page 4: ...ake released hollow arrow and activated solid arrow Position right side of machine on chain drive cover Specifications Engine displacement 37cc Maximum engine power 1200W Engine type Air cooled single cylinder two stroke cycle Recommended maximum engine speed at idling 2600min 1 Maximum engine speed with cutting attachment 9000min 1 Fuel type Unleaded petrol 2 stroke oil 50 1 Fuel tank capacity 31...

Page 5: ...e caught in moving parts f If devices are provided for the connection of dust extraction and collection facilities ensure that these are connected and properly used Use of these devices can reduce dust related hazards 3 Power tool use and care a Do not force the power tool Use the correct power tool for your application The correct power tool will do the job better and safer at the rate for which ...

Page 6: ...not use the chain saw in rainy or windy conditions or in poor light Find a suitable position before beginning work When working on slopes the saw operator must stand beside or above the wood to cut i e felled trees Use the chain saw holding it firmly with both hands Make a wedge shaped cut before felling the tree then the felling cut leaving a hinge for the felling direction Beware of any falling ...

Page 7: ...ndle and the left hand on the front handle when the motor is running A firm grip will help maintain control Do not let go whilst the motor is running Make sure that the area of operation is free of obstructions Do not let the point of the guide bar contact a log branch or any other object Use high speeds when cutting Do not overreach or cut above shoulder height Carefully follow the sharpening and...

Page 8: ...Top cover knob 13 Rear handle 14 Recoil starter 15 Idling adjustment screw 16 Fast run adjustment screw 17 Slow run adjustment screw 18 Choke control 19 On Off switch 20 Trigger switch 21 Lock off switch 22 Chain catcher 23 Oil tank cap 24 Fuel tank cap 25 Drive sprocket wheel not shown 26 Spacer 27 Chain tensioner pin 28 Double ended wrench 29 Screwdriver 30 Chain file 31 Guide bar cover 3 8 17 1...

Page 9: ...und the drive sprocket wheel 25 with the chain links in the direction shown on the bar and fit the chain around the guide bar 7 Fit the chain drive cover and fasten the two nuts 5 finger tight 8 With the guide bar pointing upwards tighten the chain tensioner screw 3 until the links of the chain just touch the bottom edge of the guide bar 9 With the guide bar pointing upwards tighten drive nuts 10 ...

Page 10: ...mise the lifetime of the engine avoid the following Do not use raw petrol it will severely damage the engine very quickly Do not use oil meant for 4 stroke engines it will cause spark plug fouling exhaust blocking and piston ring sticking Do not use fuel mixtures that have been left standing for one month or more they can cause clogging of the carburettor Before storing the chain saw for an extend...

Page 11: ...ition It returns automatically when the trigger switch is operated 4 Hold the chain saw securely on the ground and pull vigorously on the recoil starter 14 Repeat at least 15 times until the engine kicks attempts to start 5 With the lock off switch 21 held depressed slightly pull on the trigger switch 20 and then release it The choke control will click back one position 6 Pull the recoil starter 1...

Page 12: ...ly clockwise until the idling speed is at its maximum then turn the screw back anticlockwise 1 4 of a turn 6 Turn the idling adjusting screw T 15 anticlockwise until the chain does not turn 7 If the idling speed is too slow turn screw T clockwise 8 Make a test cut and adjust screw 16 for best cutting power not for maximum speed Chain Brake The chain brake operates automatically in the event of kic...

Page 13: ... the cylinder cover 6 6 Remove the slide cover turn it the other way round with the snow crystal symbol at the top and the sun symbol at the bottom and replace the slide cover in the cylinder cover Replace the cylinder cover and restore all other components in their original positions Operation WARNINGS Always follow the safety instructions given at the front of this manual This chain saw must onl...

Page 14: ...e attempting a cut that might trigger a kickback Avoid cuts that will cause the chainsaw to jam in a tree trunk or limb Observe the size of wood shavings if they become dusty your chain could need sharpening Felling a tree WARNING Felling a tree should only be done by trained operators Decide the direction in which you wish the tree to fall taking into account the direction of the wind the positio...

Page 15: ...ut up from the bottom and finish down from the top Maintenance NOTE Before cleaning your chain saw or carrying out any maintenance procedure make sure that the engine is off and is cool Disconnect the spark plug to prevent accidental starting Maintenance to be preformed after each use 1 Loosen the top cover knob 12 and remove the top cover 11 2 Remove the air filter 8 3 Split the air filter into i...

Page 16: ...e guide bar 1 securely in a vice Sharpen each cutter using the chain file 30 Always use outward strokes After sharpening the cutters must all have the same width and length After every 3 4 times use an authourised repair centre to professionally sharpen your saw chain They have the special tools necessary to ensure the correct cutting angles and depths Guide bar wear Reverse the guide bar every 8 ...

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Page 20: ...oduct development changes may have occurred which render the product received slightly different to that shown in this instruction manual The manufacturer reserves the right to change specifications without notice Note Specifications may differ from country to country Helpline 1300 880 001 Australia or 0800 445 721 New Zealand Register your warranty on line at www gmcompany com and enter your rece...

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