McCulloch MAC 742 - Manuals

McCulloch MAC 742 – Manual in PDF format online.

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Manual

Manual McCulloch MAC 742

Summary

Page 2 - IDENTIFICATION OF SYMBOLS

2 IDENTIFICATION (WHAT IS WHAT?) Chain Adjustment Tool (Bar Tool) Bar Oil Fill Cap Chain Front Hand Guard Starter Rope ON/STOPSwitch Muffler Choke/Fast IdleLever Fuel Mix Fill Cap Starter Housing Idle Speed Screw Bumperspike Primer Bulb Front Handle Guide Bar Bar Nuts Cylinder Cover ThrottleLockout ...

Page 3 - Starting Reminder; SAFETY RULES; PLAN AHEAD; WARNING; : Long term inhalation of

3 IDENTIFICATION OF SYMBOLS Move ON/STOP switch tothe ON position. Slowly press primer bulb6 times. Pull the starter ropesharply 5 times with yourright hand. Pull the starter rope sharplywith your right hand untilthe engine starts. Pull choke/fast idle leverout to the full extent (tothe FULL CHOKE p...

Page 4 - CHAIN SAW SAFETY EQUIPMENT; : Never use a chain saw; MAINTAIN YOUR SAW IN GOOD

4 S Make sure the chain will not make contactwith any object while starting the engine.Never try to start the saw when the guidebar is in a cut. S Do not put pressure on the saw at the end ofthe cut. Applying pressure can cause you tolose control of the chain saw when the cut iscompleted and may cau...

Page 5 - KICKBACK; : Avoid kickback which; REDUCE THE CHANCE OF; Never reverse

5 S Mix and pour fuel in an outdoor area on bareground; store fuel in a cool, dry, well venti-lated place; and use an approved, markedcontainer for all fuel purposes. Wipe up all fuel spills before starting saw. S Move at least 10 feet (3 meters) from fuel-ing site before starting engine. S Turn the...

Page 6 - KICKBACK SAFETY FEATURES; : The following features are; Contoured Depth Gauge; YOU SHOULD USE THE SAW

6 Thumb on underside of handlebar Elbow locked S Keep a good, firm grip on the saw with bothhands when the engine is running and don’tlet go. A firm grip will help you reduce kick-back and maintain control of the saw. Keepthe fingers of your left hand encircling andyour left thumb under the front ha...

Page 7 - ASSEMBLY; ATTACHING THE BUMPER SPIKE

7 ASSEMBLY Protective gloves (not provided) should beworn during assembly. ATTACHING THE BUMPER SPIKE The bumper spike may be used as a pivotwhen making a cut.1. Loosen and remove the bar nuts and the clutch cover from the saw. 2. Attach the bumper spike with the two screws as illustrated. ATTACHING...

Page 8 - : Wear protective gloves; Checking the tension:; : If the saw is operated; : Muffler is very hot during; OPERATING YOUR UNIT; BEFORE STARTING ENGINE; : Be sure to read the fuel; BAR AND CHAIN LUBRICATION; : Remove fuel cap slowly

8 Clutch Cover Lower Hole Guide Bar Adjusting Pin 12. Install bar nuts and finger tighten only. Once the chain is tensioned, you willneed to tighten bar nuts. CHAIN TENSION (Including units with chain already installed) WARNING : Wear protective gloves when handling chain. The chain is sharp andcan ...

Page 9 - IMPORTANT POINTS TO REMEMBER; : Do not cut material with the choke/fast; STARTING A COLD ENGINE (or a; IGNITION; NOTE; : If the engine sounds as if it is trying; STARTING A WARM ENGINE

9 mixed with a good quality 2-cycle air-cooledengine oil designed to be mixed at a ratio of40:1. A 40:1 ratio is obtained by mixing 0,125liter of oil with 5 liters of unleaded gasoline. DONOT USE automotive or boat oil. These oilswill cause engine damage. When mixing fuelfollow the instructions prin...

Page 10 - : If the brake band is worn; Engaged; CUTTING METHODS; Stop the engine before setting the saw down.; : Felling a tree requires; : Do not cut near buildings

10 DIFFICULT STARTING (or starting a flooded engine) The engine may be flooded with too muchfuel if it has not started after 10 pulls.Flooded engines can be cleared of excessfuel by pushing the choke/fast idle lever incompletely (to the OFF CHOKE position)and then following the warm engine startingp...

Page 11 - : Do not stand on the log; : If saw becomes pinched

11 Natural conditions that can cause a tree tofall in a particular direction include: S The wind direction and speed. S The lean of the tree. The lean of a treemight not be apparent due to uneven orsloping terrain. Use a plumb or level to de-termine the direction of tree lean. S Weight and branches ...

Page 12 - : Never turn saw upside; : Be alert for and guard; : Never climb into a tree to; : Limit pruning to limbs

12 Overcutting begins on the top side of the logwith the saw against the log. When overcut-ting use light downward pressure. Overcutting Undercutting Undercutting involves cutting on the under-side of the log with top of saw against the log.When undercutting use light upward pres-sure. Hold saw firm...

Page 13 - Pruning technique; SERVICE AND ADJUSTMENTS; : Improper maintenance; : Disconnect the spark; AIR FILTER

13 S Make your fist cut 1/3 of the way through the bottom of the limb. S Next make a 2nd cut all the way throughthe limb. Then cut a third overcut leavinga 3 to 5 cm collar from the trunk of the tree. First cut Second cut Third cut Collar Pruning technique SERVICE AND ADJUSTMENTS WARNING : Improper ...

Page 15 - Wrong; : Maintain the proper hook; CARBURETOR ADJUSTMENT; : The chain will be moving; STORAGE; : Stop engine and allow to; CAUTION; : It is important to prevent

15 Wrong Squared OffCorner Too Much Hook Angle WARNING : Maintain the proper hook angle according to the manufacturer’s specifi-cations for the chain you are using. Improperhook angle will increase the chance of kick-back which can result in serious injury.4. Check and lower depth gauges. Depth Gaug...

Page 16 - DECLARATION OF CONFORMITY; EC Declaration of Conformity (Only applies to Europe); and

16 TROUBLE CAUSE REMEDY Engine will notstart or will runonly a fewseconds afterstarting. 1. Ignition switch off.2. Engine flooded. 3. Fuel tank empty.4. Spark plug not firing.5. Fuel not reaching carburetor. 1. Move ignition switch to ON.2. See “Difficult Starting” in Operation Section. 3. Fill tank...

Page 17 - TECHNICAL DATA SHEET; Engine

17 TECHNICAL DATA SHEET Engine Mac 738 740 742 Cylinder volume, cm 3 38 40 42 Stroke, mm 32 32 32 Idle speed, rpm 3000 3000 3000 Recommended max.speed, unloaded, rpm 12000 12000 12000Power, kW 1,5 1,5 1,6 Ignition systemManufacturer Walbro Type of ignition system Inductive Spark plug Champion Electr...