Stihl MS 380, Manual

Page 1: ...or 30 Checking the Spark Plug 32 Spark Arresting Screen in Muffler 33 Replacing Starter Rope and Rewind Spring 34 Storing the Machine 36 Checking and Replacing Chain Sprocket 36 Maintaining and Sharpe...

Page 2: ...e is a risk of damaging the machine or its individual components Note or hint which is not essential for using the machine but may improve the operator s under standing of the situation and result in...

Page 3: ...under the influence of any substance drugs alcohol which might impair vision dexterity or judgment If you have a pacemaker The ignition system of this power tool produces a very weak electromagnetic...

Page 4: ...before carrying the saw longer distances more than about 50 m Always carry the saw by the front handle with the hot muffler away from your body the guide bar must point to the rear To avoid serious b...

Page 5: ...to idle position Master control stop switch must move easily to STOP or Check that spark plug boot is secure a loose boot may cause arcing that could ignite combustible fumes and cause a fire Never at...

Page 6: ...equipped with a catalytic converter To reduce the risk of serious or fatal injury from breathing toxic fumes ensure proper ventilation when working in trenches hollows or other confined locations The...

Page 7: ...e reduces the risk of injury in certain situations it cannot prevent kickback If activated the brake stops the saw chain within a fraction of a second for a description of this device refer to Chain B...

Page 8: ...symptoms frequently cold fingers itching Low outside temperatures Gripping force a tight grip hinders circulation Continual and regular users should monitor closely the condition of their hands and f...

Page 9: ...led safety type canisters only Take care when handling gasoline Avoid direct contact with the skin and avoid inhaling fuel vapour To reduce the risk of injury shut down your chainsaw immediately in th...

Page 10: ...f on a slope stand on the uphill side or to one side of the log Watch out for rolling logs When working at heights Always use a lift bucket Never work on a ladder Never work in a tree Never work on an...

Page 11: ...helpers Make sure no one is endangered by the falling tree the noise of your engine may drown any warning calls Maintain a distance of at least 21 2 tree lengths from next felling site Determine direc...

Page 12: ...the tree base and work area from interfering limbs and brush safe footing for all persons concerned Clean lower portion of tree base with an axe Sand stones and other foreign objects will dull the saw...

Page 13: ...ter Sapwood cuts Sapwood cuts help prevent long fibered wood splintering when the tree falls Apply the cuts at both sides of the trunk at the same height as the bottom of the felling notch to a depth...

Page 14: ...diately before the tree falls Small diameter trees simple fan cut Apply the spiked bumper behind the hinge pivot the saw around this point only as far as the hinge The spiked bumper rolls against the...

Page 15: ...kickback Cut until depth of kerf is twice the width of the guide bar Swing saw slowly 5 into plunge cutting position Take care because of the risk of kickback or pushback Make the plunge cut 6 very ca...

Page 16: ...r railway authority Limbing Use a low kickback chain Work with the saw supported wherever possible Do not stand on the log while limbing Do not work with the bar nose Watch for limbs which are under t...

Page 17: ...eters e g 1 6 If non matching components of the wrong pitch or drive link gauge are run together on the same machine they may be damaged beyond repair after a short period of operation Unscrew the nut...

Page 18: ...ing screw 1 clockwise until chain fits snugly against the underside of the bar While still holding the bar nose up tighten down the nuts firmly Go to chapter Checking Chain Tension A new chain has to...

Page 19: ...rter Engine Oil Use only quality two stroke engine oil We recommend STIHL two stroke engine oil since it is specially formulated for use in STlHL engines and guarantees a long engine life Use only STI...

Page 20: ...and the area around it to ensure that no dirt falls into the tank Position the machine so that the filler cap is facing up Take care not to spill fuel while fueling and do not overfill the tank The ST...

Page 21: ...the new pickup body into the hose Place the pickup body in the tank For automatic and reliable lubrication of the chain and guide bar use only an environmentally compatible quality chain and bar lubr...

Page 22: ...uel Close the filler cap There must still be a small amount of oil in the oil tank when the fuel tank is empty If the oil tank is still partly full the reason may be a problem in the oil supply system...

Page 23: ...rake engaged chain locked will quickly damage the powerhead and chain drive clutch chain brake The chain brake is also activated by the inertia of the front hand guard if the kickback force of the saw...

Page 24: ...e Master Control lever moves to the normal run position as soon as the throttle trigger is squeezed 4 Cold start this position is used to start a cold engine Observe safety precautions see chapter on...

Page 25: ...handle tightly between your legs just above the knees Hold the front handle firmly with your left hand your thumb should be under the handlebar Pull the starter grip slowly with your right hand until...

Page 26: ...d the front handle The chain brake is now disengaged your saw is ready for operation Always disengage the chain brake before accelerating the engine High revs with the chain brake engaged chain locked...

Page 27: ...lever to warm start position even if engine is cold Now start the engine During break in period A factory new machine should not be run at high revs full throttle off load for the first three tank fil...

Page 28: ...ling air This protects engine mounted components ignition carburetor from thermal overload After finishing work Slacken off the chain if you have retensioned it at operating temperature during cutting...

Page 29: ...nk tangs will otherwise scrape along the bottom of the groove the cutters and tie straps will not ride on the bar rails Dirty air filters reduce engine power increase fuel consumption and make startin...

Page 30: ...eated The hook of the torsion spring 9 must engage the slot arrow Secure the main filter and prefilter in position Fit the carburetor box cover General Information Your carburetor comes from the facto...

Page 31: ...idle speed correctly chain must not rotate Starting from the standard setting use the high speed screw H to adjust the maximum engine speed with a tachometer to 12 500 rpm with bar and properly tensi...

Page 32: ...spark plug Remove the spark plug see Starting Stopping the Engine Clean dirty spark plug Check electrode gap A and readjust if necessary see Specifications Rectify the problems which have caused fouli...

Page 33: ...he screen is damaged or heavily carbonized fit a new one Take out the screws 3 Remove muffler upper casing 4 see Guide to Using this Manual Remove the screw 5 inside the upper casing Bend back the ret...

Page 34: ...hed out of the grip Thread the new rope through the top of the starter grip and guide bushing 6 Pull the rope through the rotor and secure it with a simple overhand knot Coat rope rotor bearing bore w...

Page 35: ...could break Take one turn of rope off the rotor in such a case Replacing a Broken Rewind Spring Remove the rope rotor Remove the spring housing and parts of the spring The bits of spring might still...

Page 36: ...e the chain brake Pull hand guard toward the front handle Replacing the Chain Sprocket Replace the chain sprocket after using two Oilomatic chains Replace sooner if the wear marks on the sprocket are...

Page 37: ...parts Install in the reverse sequence Clean the stub of the crankshaft and needle cage and lubricate with STlHL grease Special Accessories Push the needle cage spur sprocket and clutch drum with spur...

Page 38: ...and in particular if the depth gauge is set too low there is a risk of increased kickback of the chainsaw with resulting risk of injury The chain pitch e g 3 8 is marked on the depth gauge end of eac...

Page 39: ...or checking the filing and side plate angles depth gauge setting and cutter length It also cleans the guide bar groove and oil inlet holes File correctly Select sharpening tools according to chain pit...

Page 40: ...an electric grinder Depth gauge setting The depth gauge determines the height at which the cutter enters the wood and thus the thickness of the chip removed Specified distance or setting between dept...

Page 41: ...riod clean the chain and store it in a well oiled condition 689BA044 KN 689BA052 KN Sharpening Tools special accessories Chain pitch Round file Round file File holder Filing gauge Flat file1 Sharpenin...

Page 42: ...ly every 12 months if problem if damaged as required Complete machine Visual inspection condition leaks X X Clean X Throttle trigger trigger interlock Master Control Check operation X X Chain brake Ch...

Page 43: ...esin rich wood tropical wood etc shorten the specified intervals accordingly If you only use the saw occasionally extend the intervals accordingly before starting work after finishing work or daily af...

Page 44: ...ey should be performed by an authorized STIHL servicing dealer If these operations are not carried out as specified the user assumes responsibility for any damage that may occur Among other things thi...

Page 45: ...omatic saw chain Serial number 12 Oil tank filler cap 13 Muffler with spark arresting screens 14 Front hand guard 15 Front handle handlebar 16 Starter grip 17 Fuel tank filler cap 18 Master Control le...

Page 46: ...k gauge 1 6 mm Chain sprockets 7 and 8 tooth 3 8 rim sprocket 7 tooth 3 8 spur sprocket Chain lubrication Fully automatic speed controlled rotary piston oil pump Additional manual oil flow control Fil...

Page 47: ...Guide bar part number Chain part number The user of this unit should carry out only the maintenance operations described in this manual Other repair work may be performed only by an authorized STIHL d...

Page 48: ...Product Licensing The CE type examination was carried out by Deutsche Pr fstelle f r Land und Forsttechnik DPLF Postfach 41 03 56 34114 Kassel Certification number K EG 2003 3756 Waiblingen September...