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Bushranger CS4020, Operator'S Manual

The free Bushranger CS4020 Operator's Manual is available for download on our website. This comprehensive manual provides step-by-step instructions for operating and maintaining your Bushranger CS4020. Visit our website to access and download this essential manual and unlock the full potential of your product.

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11 

STARTING THE COLD ENGINE 

 

 

 

•  Fill the fuel tank with 2 stroke fuel. 

•  Fill the chain oil tank with bar and chain 

lubricant. 

•  Press hand guard forward. (Chain brake 

ACTIVATED position). 

•  Turn ignition switch upside. 

•  Pull choke control knob all the way out.

•  Securely hold the chain saw. 

•  Make sure guide bar and saw chain are not 

touching anything when starting the saw. 

• 

Pull starter handle several times until first 

firing sound is heard.

 

•  Push choke control knob all the way in. 

•  Pull starter handle again.

 

 

 

WARNING DANGER

•  After choke control knob is pulled and then 

knob is returned to original position, throttle 

remains a little open (latch condition). 

•  If engine is started in this latch condition, 

chain starts to turn. DO NOT start engine 

before chain brake is activated.

NOTE

Do not pull starter rope out to the maximum 

position. Do not allow starter handle to snap 

back against the casing.

CAUTION

•  After starting the engine, squeeze trigger 

slightly to release throttle latch and pull 

front hand guard towards the operator 

immediately. (Chain brake RELEASED 

position). 

•  Do not increase engine speed while chain 

brake is engaged. 

•  Use the chain brake in an emergency. Do not 

use it unless absolutely necessary.

CAUTION

When throttle latch is used, saw chain will go 

into motion as soon as the engine starts. Never 

use throttle latch for cutting. Use it only when 

starting the engine.

STARTING WITH WARM ENGINE

• 

Confirm fuel and chain oil in the tanks.

 

•  Press hand guard forward. (Chain brake 

ACTIVATED position). 

•  Turn ignition switch up side. 

•  Securely hold the chain saw. 

•  Pull starter handle. 

•  Choke may be used if necessary but after 

first firing sound, pull throttle trigger a little to 

release throttle latch and choke.

CAUTION

Clutch engages and chain and will rotate when 

engine is started with throttle trigger squeezed. 

After engine starts release throttle trigger to idle 

position.

STARTING THE COLD ENGINE

                                                                      

STARTING THE WARM ENGINE

                                          

RUNNING

                                     

•Fill the fuel tank with fuel.
•Fill the chain oil tank with lubricant.
•Press hand guard forward. (Chain brake ACTIVATED
position)
•Turn ignition switch upside.
•Pull choke control knob all the way out.

WARNING ▲ DANGER

•AFTER CHOKE CONTROL KNOB IS PULLED AND
THEN KNOB IS RETURNED TO ORIGINAL
POSITION, THROTTLE REMAINS A LITTLE OPEN
(LATCH CONDITION).
•IF ENGINE IS STARTED IN THIS LATCH
CONDITION, CHAIN STARTS TO TURN. DO NOT
START ENGINE BEFORE CHAIN BRAKE IS
ACTIVATED.

NOTE
Do not pull starter rope out to the maximum position.
Do not allow starter handle to snap back against the
casing.

CAUTION
1. After starting the engine, squeeze trigger
slightly to release throttle latch and pull front
hand guard towards the operator immediately.
(Chain brake RELEASED position)
2. Do not increase engine speed while chain brake is
engaged.
3. Use the chain brake in an emergency.
Do not use it unless absolutely necessary.

CAUTION
When throttle latch is used, saw chain will go into
motion as soon as the engine starts.
Never use throttle latch for cutting.
Use it only when starting the engine.

•Securely hold the chain saw.
•Make sure guide bar and saw chain are not touching
anything when starting the saw.
•Pull starter handle several times until first firing sound
is heard.
•Push choke control knob all the way in.
•Pull starter handle again.

•Confirm fuel and chain oil in the tanks.
•Press hand guard forward. (Chain brake ACTIVATED
position)
•Turn ignition switch up side.
•Securely hold the chain saw.
•Pull starter handle.
•Choke may be used if necessary but after first firing
sound, pull throttle trigger a little to release throttle
latch and choke.

CAUTION

Clutch engages and chain will rotate when engine is
started with throttle trigger squeezed. After engine
starts release throttle trigger to idle position.

•After engine starts, allow it to idle for a few minutes.
•Squeeze throttle trigger gradually to increase engine
revolution.
•The chain starts moving when the engine reaches
3,800 r/min approximately.
•Ensure proper acceleration and lubrication of saw
chain and guide bar.
•Do not run the engine at high speed unnecessarily.
•Be sure that saw chain stops moving when throttle
trigger is released.

STARTING THE COLD ENGINE

                                                                      

STARTING THE WARM ENGINE

                                          

RUNNING

                                     

•Fill the fuel tank with fuel.
•Fill the chain oil tank with lubricant.
•Press hand guard forward. (Chain brake ACTIVATED
position)
•Turn ignition switch upside.
•Pull choke control knob all the way out.

WARNING ▲ DANGER

•AFTER CHOKE CONTROL KNOB IS PULLED AND
THEN KNOB IS RETURNED TO ORIGINAL
POSITION, THROTTLE REMAINS A LITTLE OPEN
(LATCH CONDITION).
•IF ENGINE IS STARTED IN THIS LATCH
CONDITION, CHAIN STARTS TO TURN. DO NOT
START ENGINE BEFORE CHAIN BRAKE IS
ACTIVATED.

NOTE
Do not pull starter rope out to the maximum position.
Do not allow starter handle to snap back against the
casing.

CAUTION
1. After starting the engine, squeeze trigger
slightly to release throttle latch and pull front
hand guard towards the operator immediately.
(Chain brake RELEASED position)
2. Do not increase engine speed while chain brake is
engaged.
3. Use the chain brake in an emergency.
Do not use it unless absolutely necessary.

CAUTION
When throttle latch is used, saw chain will go into
motion as soon as the engine starts.
Never use throttle latch for cutting.
Use it only when starting the engine.

•Securely hold the chain saw.
•Make sure guide bar and saw chain are not touching
anything when starting the saw.
•Pull starter handle several times until first firing sound
is heard.
•Push choke control knob all the way in.
•Pull starter handle again.

•Confirm fuel and chain oil in the tanks.
•Press hand guard forward. (Chain brake ACTIVATED
position)
•Turn ignition switch up side.
•Securely hold the chain saw.
•Pull starter handle.
•Choke may be used if necessary but after first firing
sound, pull throttle trigger a little to release throttle
latch and choke.

CAUTION

Clutch engages and chain will rotate when engine is
started with throttle trigger squeezed. After engine
starts release throttle trigger to idle position.

•After engine starts, allow it to idle for a few minutes.
•Squeeze throttle trigger gradually to increase engine
revolution.
•The chain starts moving when the engine reaches
3,800 r/min approximately.
•Ensure proper acceleration and lubrication of saw
chain and guide bar.
•Do not run the engine at high speed unnecessarily.
•Be sure that saw chain stops moving when throttle
trigger is released.

STARTING THE COLD ENGINE

                                                                      

STARTING THE WARM ENGINE

                                          

RUNNING

                                     

•Fill the fuel tank with fuel.
•Fill the chain oil tank with lubricant.
•Press hand guard forward. (Chain brake ACTIVATED
position)
•Turn ignition switch upside.
•Pull choke control knob all the way out.

WARNING ▲ DANGER

•AFTER CHOKE CONTROL KNOB IS PULLED AND
THEN KNOB IS RETURNED TO ORIGINAL
POSITION, THROTTLE REMAINS A LITTLE OPEN
(LATCH CONDITION).
•IF ENGINE IS STARTED IN THIS LATCH
CONDITION, CHAIN STARTS TO TURN. DO NOT
START ENGINE BEFORE CHAIN BRAKE IS
ACTIVATED.

NOTE
Do not pull starter rope out to the maximum position.
Do not allow starter handle to snap back against the
casing.

CAUTION
1. After starting the engine, squeeze trigger
slightly to release throttle latch and pull front
hand guard towards the operator immediately.
(Chain brake RELEASED position)
2. Do not increase engine speed while chain brake is
engaged.
3. Use the chain brake in an emergency.
Do not use it unless absolutely necessary.

CAUTION
When throttle latch is used, saw chain will go into
motion as soon as the engine starts.
Never use throttle latch for cutting.
Use it only when starting the engine.

•Securely hold the chain saw.
•Make sure guide bar and saw chain are not touching
anything when starting the saw.
•Pull starter handle several times until first firing sound
is heard.
•Push choke control knob all the way in.
•Pull starter handle again.

•Confirm fuel and chain oil in the tanks.
•Press hand guard forward. (Chain brake ACTIVATED
position)
•Turn ignition switch up side.
•Securely hold the chain saw.
•Pull starter handle.
•Choke may be used if necessary but after first firing
sound, pull throttle trigger a little to release throttle
latch and choke.

CAUTION

Clutch engages and chain will rotate when engine is
started with throttle trigger squeezed. After engine
starts release throttle trigger to idle position.

•After engine starts, allow it to idle for a few minutes.
•Squeeze throttle trigger gradually to increase engine
revolution.
•The chain starts moving when the engine reaches
3,800 r/min approximately.
•Ensure proper acceleration and lubrication of saw
chain and guide bar.
•Do not run the engine at high speed unnecessarily.
•Be sure that saw chain stops moving when throttle
trigger is released.

STARTING THE COLD ENGINE

                                                                      

STARTING THE WARM ENGINE

                                          

RUNNING

                                     

•Fill the fuel tank with fuel.
•Fill the chain oil tank with lubricant.
•Press hand guard forward. (Chain brake ACTIVATED
position)
•Turn ignition switch upside.
•Pull choke control knob all the way out.

WARNING ▲ DANGER

•AFTER CHOKE CONTROL KNOB IS PULLED AND
THEN KNOB IS RETURNED TO ORIGINAL
POSITION, THROTTLE REMAINS A LITTLE OPEN
(LATCH CONDITION).
•IF ENGINE IS STARTED IN THIS LATCH
CONDITION, CHAIN STARTS TO TURN. DO NOT
START ENGINE BEFORE CHAIN BRAKE IS
ACTIVATED.

NOTE
Do not pull starter rope out to the maximum position.
Do not allow starter handle to snap back against the
casing.

CAUTION
1. After starting the engine, squeeze trigger
slightly to release throttle latch and pull front
hand guard towards the operator immediately.
(Chain brake RELEASED position)
2. Do not increase engine speed while chain brake is
engaged.
3. Use the chain brake in an emergency.
Do not use it unless absolutely necessary.

CAUTION
When throttle latch is used, saw chain will go into
motion as soon as the engine starts.
Never use throttle latch for cutting.
Use it only when starting the engine.

•Securely hold the chain saw.
•Make sure guide bar and saw chain are not touching
anything when starting the saw.
•Pull starter handle several times until first firing sound
is heard.
•Push choke control knob all the way in.
•Pull starter handle again.

•Confirm fuel and chain oil in the tanks.
•Press hand guard forward. (Chain brake ACTIVATED
position)
•Turn ignition switch up side.
•Securely hold the chain saw.
•Pull starter handle.
•Choke may be used if necessary but after first firing
sound, pull throttle trigger a little to release throttle
latch and choke.

CAUTION

Clutch engages and chain will rotate when engine is
started with throttle trigger squeezed. After engine
starts release throttle trigger to idle position.

•After engine starts, allow it to idle for a few minutes.
•Squeeze throttle trigger gradually to increase engine
revolution.
•The chain starts moving when the engine reaches
3,800 r/min approximately.
•Ensure proper acceleration and lubrication of saw
chain and guide bar.
•Do not run the engine at high speed unnecessarily.
•Be sure that saw chain stops moving when throttle
trigger is released.

Throttle trigger

Throttle trigger lockout

Starter handle

Summary of Contents for CS4020

Page 1: ...1 CHAINSAW CS4020 OPERATOR S MANUAL ...

Page 2: ... means Whatever is shown is prohibited Chain oiler adjustment direction the oil flow decrease direction the oil flow decrease CAUTION indicates a potentially hazardous situation if not avoided may result in minor or moderate injury Carburettor adjustment Low speed mixture Carburettor adjustment High speed mixture Wear eyes ears and head protection Carburettor adjustment Idle speed mixture Warning ...

Page 3: ... any physical condition which strenuous work could worsen check with your physician before using a chain saw Do not operate when ill or fatigued or under the influence of any substance or medication which could affect your vision dexterity or judgement Always wear approved goggles to protect your eyes Wood chips dust snapping branches an other debris can be tossed by the cutting chain into the ope...

Page 4: ...not pour fuel indoors Wipe any spilled fuel off the unit Never refuel while the engine is still hot because a fuel leak could start a fire Do not store the unit with fuel in its tank because a fuel leak could start a fire Bring an extinguisher or shovel in case of fire Despite the precautions which can be taken operating a chain saw or just working in the forest presents dangers After refueling ti...

Page 5: ... saw at all times Do not overreach or cut above chest height Make sure that the area in which you are cutting is free from obstructions Do not let the bar nose contact a log branch or any other obstruction which could be hit while you are operating the saw Cutting at high engine speeds may reduce the likelihood of kickback But cutting at part throttle or low engine speed may be preferable to contr...

Page 6: ...PRECAUTIONS VIBRATION AND COLD PERPETITIVE STRESS INJURIES MACHINE CONDITIONS It is believed that a condition called Raynaud s Phenomenon which affects the fingers of certain individuals may be brought about by exposure to cold and vibration Accordingly your chain saw has shock mount designed to reduce the intensity of vibration received through the handles Exposure to cold and vibration may cause...

Page 7: ...e were no chain brake Even with normal use and proper maintenance the response time of the brake may lengthen The following may interfere with the brake s ability to protect the operator CUTTING SERVICES WOOD PRACTICES CHAIN BRAKE Do not operate a chain saw in a tree unless you have been specifically trained to do so Keep all parts of your body away from the saw chain when the engine is running Us...

Page 8: ...8 DESCRIPTION 15 16 17 18 14 21 20 19 22 4 3 2 13 12 11 10 9 8 7 6 5 1 CHAINSAW CS4020 OPERATOR S MANUAL 1 ...

Page 9: ...ide bar saw chain clutch and sprocket when the chain saw in use 9 CHAIN TENSION ADJUSTER This is device to adjust chain tension 10 CHAIN CATCHER A projection designed to reduce the risk of the operator s right hand from being hit by a chain which has broken or derailed from the guide bar during cutting 11 SPIKED BUMPER Devise fitted in front of the guide bar mounting point acting as a pivot when i...

Page 10: ...h drum then pull the chain in order to guide teeth suitable to the guide groove of guide bar Ensure cutters are pointing in the correct direction Install the clutch cover and put the tensioner pin into bar hole adjust the chain tension adjuster to move the tensioner pin for adapting to the bar hole then mount spiked bumper tighten nuts by finger Never tighten nuts too tight in order to glide the b...

Page 11: ...necessary but after first firing sound pull throttle trigger a little to release throttle latch and choke CAUTION Clutch engages and chain will rotate when engine is started with throttle trigger squeezed After engine starts release throttle trigger to idle position After engine starts allow it to idle for a few minutes Squeeze throttle trigger gradually to increase engine revolution The chain sta...

Page 12: ...d be checked frequently during work and corrected if necessary Tension the chain as tight as possible but so it can still be pulled easily along the bar by hand WARNING DANGER MAKE SURE THAT THE ENGINE IS SHUT OFF WHEN CHECKING CHAIN TENSION Familiarize yourself with your chain saw before you start actual cutting For this purpose it may be wise to practice by cutting some small logs or limbs sever...

Page 13: ... right hand 4 The impact is propagated to the brake lever which actuates the chain brake PRECAUTION When checking the operation of the non manual chain brake use a soft surface substance like wood to provide the impact so the saw chain is not damaged NON MANUAL CHAIN BRAKE CUTTING INSTRUCTION GENERAL The non manual chain brake stops the operation of the saw chain in such a manner that kickback act...

Page 14: ...around the tree You will need good footing while working and you should be able to work the saw without hitting any obstacles Next select a path of retreat When the tree begins to fall you should retreat away from the direction of fall at a 45 degree angle to avoid the trunk kicking back over the stump See right above figure Begin the cut on the side to which the tree is to fall Cut a notch approx...

Page 15: ...slope or hillside always stand uphill CAUTION Stay on the uphill side of logs LIMBING BUCKING Limbing a fallen tree is much the same as bucking Never limb on the tree that you are standing Be careful of the tip touching other limbs Always use both hands Don t cut with the saw overhead or the bar in a vertical position If the saw should kickback you may not have good enough control to prevent possi...

Page 16: ...and should meet the first cut CAUTION If you have misjudged the effects of tension and compression and cut from the wrong side the timber will pinch the guide bar and chain trapping it Racing the engine with the chain jammed will burn out your clutch If the chain should become jammed and the saw can not be removed from the cut do not force it out Stop the saw force a wedge into the cut to open it ...

Page 17: ...RFORMED BY COMPETENT SERVICE PERSONNEL TROUBLE SHOOTING SERVICE MAINTENANCE GUIDE AREA MAINTENANCE PAGE BEFORE USE MONTHLY Air Filter Clean Replace 18 Fuel Filter Inspect Clean Replace 18 Spark Plug Inspect Clean Adjust Replace 19 Carburettor Adjust Replace and adjust 18 Cooling System Inspect Clean 19 Silencer Inspect Tighten Clean Oil Filter Inspect Clean Replace 18 Sprocket Inspect Replace 19 C...

Page 18: ...cessary To adjust the carburettor proceed as follows Low speed mixture adjuster L 1 to 1 and 1 4 turns open High speed mixture adjuster H 1 to 1 and 1 4 turns open Screw in the needles until lightly seated and return indicated turn above Turn idle speed adjuster T clockwise until chain begins to rotate Then back screw 1 2 turn CAUTION When starting idle speed adjuster T should be adjusted not to r...

Page 19: ...l result in poor engine cooling Remove dirt and dust from between fins to let cooling air pass easily GUIDE BAR SPROCKET AUTOMATIC OILER SPARK OLUG MAGNETO CYLINDER FINS Clean before using Clean the groove of the guide bar with for example a small screw drive Clean oil holes with a wire Reverse guide bar periodically Clean sprocket clutch and bar mount area before installation of guide bar NOTE Wh...

Page 20: ...the chain the objectives will be to maintain the same angles and profiles throughout its life as when it was new Inspect the chain for damage or wear every time you refuel your chain saw When the length of the cutting teeth has worn down to only 4 mm the chain must be replaced 1 Lock the chain push hand guard forward To rotate the chain pull hand guard against front handle 2 Your chain will have a...

Page 21: ...r a prolonged period of time 60 days or longer without performing protective storage maintenance which includes the following 1 Store unit in a dry dust free place out of the reach of children and other unauthorized persons 2 Place the ignition in the switch STOP position 8 Remove the spark plug and pour 1 2 tablespoon of fresh clean two stroke engine oil into the cylinder through the spark plug h...

Page 22: ...tion IS0 7293 Fuel consumption at maximum engine power Specific fuel consumption at maximum engine power Kg h g kw h 0 85 566 Chain brake IS0 6535 Mean braking time at racing speed S 0 055 Vibrations IS0 7505 m s 9 5 Sound pressure leveI EN 27182 LpAav db A 102 8 Sound pressure leveI ISO Dis 9207 LwAav db A 113 4 Specifications are subject to change without notice 1 Australian Consumer Law REG 90 ...

Page 23: ...23 NOTES ...

Page 24: ...ishing this material The information is provided as is without warranty of any kind and is subject to change without notice PLP also reserves the right to revise the content of this document at any time without prior notice No part of this document may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying recording or storing in a retrieval system...

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