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OPERATION

DO NOT cut down a partially fallen tree with your saw.
Be extremely cautious with partially fallen trees that may be poorly
supported. When a tree doesn’t fall completely, set the saw aside
and pull down the tree with a cable winch, block and tackle, or
tractor.

Buttress Roots
A buttress root is a large root extending from the trunk of the tree
above ground. Large buttress roots should be removed prior to
felling. Make the horizontal cut (A, Fig. 63) into the buttress first,
followed by the vertical cut (B). Remove the resulting loose sec-
tion  (C)  from the work area. Utilize the proper instructions from
the Operation-Tree Felling section of the manual after the large
buttress roots have been removed.

Bucking 

Bucking is the term used for cutting a fallen tree to the desired log
length.
• Cut only one log at a time.

WARNING: Support small logs on a saw horse or
another log while bucking. Never allow another per-
son to hold the log while cutting and never hold the
log with your leg or foot.

WARNING: Keep a clear cutting area. Make sure that
no objects can contact the guide bar nose and chain
during cutting, this can cause kickback (D, Fig. 64).

WARNING: During bucking operations always stand
on the uphill side so that the cut-off section of the log
can not roll over you.

WARNING: If saw becomes pinched or hung in a log,
don’t try to force it out. You can lose control of the
saw resulting in injury and/or damage to the saw.
Stop the saw, drive a wedge of plastic or wood into
the cut until the saw can be removed easily (E, Fig.
65). Restart the saw and carefully reenter the cut. Do
not attempt to restart your saw when it is pinched or
hung in a log.

WARNING: Do not stand on the log being cut. Any
portion can roll causing loss of footing and control.
Do not cut in an area where logs, limbs, and roots are
tangled. Drag the logs into a clear area before cutting
by pulling out exposed and cleared logs first.

Bucking with a Wedge
If the wood diameter is large enough for you to insert a soft
bucking wedge (E, Fig. 65) without touching the chain, you should
use the wedge to hold the cut open to prevent pinching.

63

64

65

Summary of Contents for MT3600

Page 1: ...OPERATOR S INSTRUCTION MANUAL MANUEL D UTILISATION ET D ENTRETIEN MANUAL DE INSTRUCCIONES en fr es MT3600 2 15 cu in MT4000 2 38 cu in ...

Page 2: ...nd in hand with satisfactory performance of the saw and safety Contact your dealer or the distributor for your area if you do not understand any of the instructions in this manual In addition to the operating instructions this manual contain paragraphs that require your special attention Such paragraphs are marked with the symbols described below Warning where there is a risk of an accident or per...

Page 3: ...Chain 17 Bucking Spike 18 Fueling 18 Chain Oil System 19 Preparation for Cutting 19 Starting the Engine 21 Breaking in the Engine 22 Stopping the Engine 23 Chain Brake Operation 23 Tree Felling 24 Bucking 25 Limbing and Pruning 27 MAINTENANCE Maintenance Chart 29 Chain Maintenance 30 Guide Bar Maintenance 31 Carburetor Adjustment 31 Fuel Filter 32 Air Filter 32 Starter Unit 32 Engine 33 Spark Plug...

Page 4: ...n Brake Lever Hand Guard 5 Muffler 6 Chain 7 Guide Bar 8 Guide Bar Adjusting Screw 9 Carburetor Adjustment Screws 10 On Off Switch 11 Choke Lever 12 Throttle Trigger 13 Rear Handle 14 Fuel Tank Cap 15 Starter Handle 16 Oil Tank Cap 17 Combination Wrench 18 Bar Cover en PRODUCT IDENTIFICATION ...

Page 5: ...nd managed by the states of California Maine Washington Idaho Minnesota New Jersey and Oregon require internal combustion engines to be equipped with a spark arrester screen by law Other states and federal agencies are enacting similar regulations If you operate a chain saw in a state or locale where such regulations exist you are legally responsible for maintaining the operating condition of thes...

Page 6: ...linked to blood vessel damage in otherwise healthy people If symptoms occur such as numbness pain loss of strength change in skin color or texture or loss of feeling in the fingers hands or wrists discontinue the use of this tool and seek medical attention WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reprodu...

Page 7: ...clothes scarves ties or bracelets that may get stuck in wood or twigs Tie up and pro tect long hair example with foulards cap helmets etc Safety shoes or boots having skid proof sole and anti piercing insert Fig 4 Wear protective helmet Fig 5 in places where there can be falling objects Wear protective goggles or face screens Use protections against noises for exam ple noise reduction ear guards F...

Page 8: ...heaters electric motors or switches furnaces etc Never take the cap off the tank when the engine is running Never use fuel for cleaning operations Take care not to get fuel on your clothing Operation and Safety WARNING Always hold the chain saw with both hands when the engine is running Use a firm grip with thumbs and fingers encircling the chain saw handles Fig 10 Keep all parts of your body away...

Page 9: ... the guide bar occurring when the saw chain near the upper tip of the guide bar contacts any object such as a log or branch or when the wood closes in and pinches the saw chain in the cut Contacting a foreign object in the wood can also result in loss of chain saw control Rotational Kickback can occur when the moving chain con tacts an object at the upper tip of the guide bar This contact can caus...

Page 10: ...at full speed If the chain is moving at a slower speed there is greater chance of kickback occurring Cut one log at a time Use extreme caution when re entering a previous cut Do not attempt cuts starting with the tip of the bar plunge cuts Watch for shifting logs or other forces that could close a cut and pinch or fall into chain Use the Reduced Kickback Guide Bar and Low Kickback Chain specified ...

Page 11: ... into the cutter Low Kickback Chain has met kick back performance requirements when tested on a representa tive sample of chain saws below 3 8 cubic inch displacement specified in ANSI B175 1 1991 Front Hand Guard designed to reduce the chance of your hand contacting the chain as your hand slips off the front handlebar Position of front and rear handlebars designed with distance between handles an...

Page 12: ...ven to the lower CKA values Lower CKA values represent safer angles to the user higher values indicate more angle and higher kick energies Computed angles represented indicate total energy and angle associated without activation of the chain brake during kickback Activated angle represents chain stopping time relative to activation angle of chain break and resulting kick angle of saw In all cases ...

Page 13: ...ain white finger disease or carpal tunnel syndrome Therefore continual and regular users should monitor closely the condition of their hands and fingers If any of the above symptoms appear seek medical advice immediately Maintenance Precaution WARNING Never operate a chain saw that is damaged improperly adjusted or is not com pletely and securely assembled Be sure that the saw chain stops moving w...

Page 14: ...nger usable dispose of it properly without damaging the environment by handing it in to your local Dealer who will arrange for its correct disposal Replace immediately any safety device when damaged or broken WARNING The muffler and other parts of the engine e g fins of the cylinder spark plug become hot during operation and remain hot for a while after stopping the engine To reduce risk of burns ...

Page 15: ...ide bar G tip through the chain L loop as shown in Fig 23 The cutters on the top of the guide bar should face toward the bar nose in the direction of the chain rotation See insert M in illustration below 8 Fit the chain G over the rim sprocket E and into bar groove CAUTION Severe damage can occur to the rim sprocket clutch drum guide bar and chain if the chain is not correctly seated into the rim ...

Page 16: ...ide bar up and retighten bar nuts WARNING Check the chain tension frequently when operating the chain saw Never touch or adjust the chain while the motor is running The saw chain is very sharp always wear protective gloves when performing maintenance to the chain WARNING The replacement chain must have the same or lower kickback characteristics as that origi nally supplied WARNING If the saw is op...

Page 17: ...he tip of the combination wrench Fig 31 can be used as a guide CAUTION Chain tensioned while warm may be too tight upon cooling Check the cold tension before next use CAUTION A new chain has to be retensioned more often than one that has been in use for some time Breaking in the Chain New chains will stretch and must be tightened frequently Lift the chain out of the bar groove and lubricate the ba...

Page 18: ...uctions on the package If 2 Cycle Engine Oil is not available use a high quality 2 cycle engine oil for correct mixing proportion see table below Fig 37 CAUTION DO NOT USE AUTOMOTIVE OIL OR 2 CYCLE OUTBOARD OIL CAUTION Never use a fuel with an alcohol percentage higher than 10 gasohol up to 10 alcohol or E10 fuel are acceptable When using an Oxygenated Gasoline a good practice of Fuel Management i...

Page 19: ... a new engi ne during and after first use WARNING Check for fuel leaks if any are found correct before use Contact a Servicing Dealer if necessary Chain Oil System Fig 40 The bar and chain require continuous lubrication Lubrication is provided by the automatic oiler system when the oil tank is kept filled Lack of oil will quickly ruin the bar and chain Too little oil will cause overheating shown b...

Page 20: ...hich the thumb and fingers are on the same side of the handle C is dangerous because a slight kick of the saw can cause loss of control WARNING Proper Cutting Stance Fig 43 Weight should be balanced on both feet feet on solid ground Keep arm with elbow locked in a straight arm position D to withstand any kickback force Your body should always be to the left of the chain line E Thumb on underside o...

Page 21: ...nals Stop the saw if the chain strikes a foreign object Inspect the saw and repair parts as necessary Keep the chain out of dirt and sand Even a small amount of dirt will quickly dull a chain and increase the possibility of kick back Stop the engine before setting the saw down Be particularly cautious and alert while wearing hearing protection because such equipment may restrict your ability to he...

Page 22: ... not use the full extent of the rope as this can cause the rope to break Do not let starter rope snap back Hold the handle and let the rope rewind slowly WARNING Do not cut material with the choke fast idle lever at the FULL CHOKE position Do not ope rate your chainsaw with the starting throttle lock engaged Cutting with the starting throttle lock enga ged does not permit the operator proper contr...

Page 23: ...ustion chamber Refit the spark plug and connect the spark plug boot press it down firmly reassemble the other parts Set the on off swich to I the starting position Set the choke lever to warm start even if engine is cold Now start the engine Stopping The Engine Release the throttle trigger A and let the engine return to idle To stop the engine move the on off switch B to the STOP position Do not p...

Page 24: ... and pull toward the front handle until an audible click is heard See Fig 57 WARNING If chain brake does not stop the chain immediately take the saw to a Servicing Dealer for repair prior to use WARNING An improperly maintained chain brake may increase the time needed to stop the chain after activation or may not activate at all Tree Felling Unusual Hazardous Tree Felling Conditions WARNING Do not...

Page 25: ...and the location of large limbs These things influence the direction in which the tree will fall Do not try to fell a tree along a line different from its natural line of fall 3 Cut a notch C Fig 60 about 1 3 the diameter of the trunk in the side of the tree Make the cuts of the notch so they inter sect at a right angle to the line of fall This notch should be clea ned out to leave a straight line...

Page 26: ...d never hold the log with your leg or foot WARNING Keep a clear cutting area Make sure that no objects can contact the guide bar nose and chain during cutting this can cause kickback D Fig 64 WARNING During bucking operations always stand on the uphill side so that the cut off section of the log can not roll over you WARNING If saw becomes pinched or hung in a log don t try to force it out You can...

Page 27: ...first cut on the compression side of the log The compression side of the log is where the pressure of the log s weight is concentrated Limbing and Pruning WARNING Be alert for and guard against kickback Do not allow the moving chain to contact any other branches or objects at the nose of the guide bar when limbing or pruning Allowing such contact can result in serious injury Work slowly keeping bo...

Page 28: ...the limb further out to reduce the weight This prevents stripping the bark from the main member Underbuck the branch 1 3 through for your first cut your second cut should overbuck to drop the branch off Now make your finishing cut smoothly and neatly against the main member so the bark will grow back to seal the wound WARNING If the limbs to be pruned are above chest height hire a professional to ...

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Page 30: ...cified angles and to the same length as fast cutting can be obtained only when all cutters are uniform 1 Wear gloves for protection Tighten the chain tension enough that the chain does not wobble Do all of your filing at the mid point of the bar See Operation Chain Tension 2 Use a 3 16 diameter round file and holder 3 Keep the file level with the top plate of the tooth as shown in Fig 79 Do not le...

Page 31: ...gauges uniformly Fig 85 P FLAT FILE Q DEPTH GAUGE JOINTER Depth gauge jointers available in 020 to 035 0 5 mm to 0 9 mm After lowering each depth gauge restore original shape by rounding the front R Be careful not to damage adjoining drive links with the edge of the file CAUTION After sharpening clean the chain thorou ghly remove filings or grinding dust lubricate the chain thoroughly Guide Bar Ma...

Page 32: ... runs and accelerates but will not idle turn the idle speed screw T clockwise to increase idle speed Fig 89 If the chain turns at idle turn the idle speed screw T counterclockwise to reduce the idle RPM and stop the chain movement If the saw chain still moves at idle speed contact a Servicing Dealer for adjustment and discontinue use until the repair is made Fuel Filter Check the fuel filter F Fig...

Page 33: ...G Never test the ignition system with igni tion wire connector removed from spark plug or with unseated spark plug since uncontained sparking may cause a fire A loose connection between spark plug terminal and ignition wire connector in the boot may create arcing that could ignite combustible fumes and cause a fire Use only resistor type spark plugs of the approved range Factors such as too much o...

Page 34: ...A G Fig 95 page 33 One spiked bumper p n 50062023 Fig 96 can to be mounted as provided on the chainsaw in the box WARNING Do not operate your chainsaw if the muffler is damaged missing or modified An improperly maintained muffler will increase the risk of fire and hearing loss Chain Brake If the chain brake does not work properly remove the clutch cover and clean the chain brake components Check f...

Page 35: ... 20 times This will clear excess fuel from engine Clean and reinstall spark plug Pull the choke lever all out and then insert it completely in order to acti vate the semi acceleration device Pull starter three times with choke lever at run If engine does not start move choke lever to choke and repeat normal starting procedure If engine still fails to start repeat procedure with a new spark plug Co...

Page 36: ...n flames from water heaters electric motors or switches furnaces etc Store unit with all guards in place Position so that any sharp object cannot accidentally cause injury to passersby Store the unit out of reach of children and other unauthorized persons 1 Drain and clean the fuel tank in a well ventilated area 2 Drain all fuel from tank into a container approved for gasoline Run engine until it ...

Page 37: ...struction manual AVERTISSEMENT Afin de garantir un fonctionnement correct et en toute sécurité de la tronçonneuse il est recommandé de toujours conserver le manuel de l utilisateur à proximité de la machine Ne prêtez ou ne louez jamais votre tronçonneuse sans fournir le présent manuel d utilisation et d entretien ADVERTENCIA Para garantizar el funcionamiento seguro y correcto de la motosierra este...

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