TS 360 TS 350 AVE
Contents
1. Note Press the starting throttle button onto the pin until it engages Tighten the fastening screws of the buffer ring with a torque of 7 0 Nm 0 7 kpm the fastening screws in the support with a torque of 7 5 Nm 0 75 kpm and the fastening screw in the handle moulding with a torque of 3 0 Nm 0 3 kpm Remove the fastening screws Draw the starting throttle button from the buffer and then remove off the pin and remove the helical the buffer ring itself spring Draw the handle moulding up Push the pin inwards and out of and off the handle frame the handle frame through the hole on the other side STIHL TS 360 350 AVE 23 6 Special servicing tools and aids 6 1 Special servicing tools No Part name Part No Application 1 Pliers A 10 0811 611 8200 Outer circlip on the thrust washer 2 Pliers C 19 0811 641 8380 Inner race of the bearing 3 Test wheel 5910 851 6100 Checking the radial truth of running of the cutting wheel mount 4 Gauge holder 5910 850 6000 Checking the radial truth of running 5 Dial gauge 0000 890 9100 Checking the radial truth of running 6 Stop screw 1107 191 1200 Arresting the crank shaft 7 Assembly pin 1119 893 7200 Forcing the needle sleeve into and out of the V belt pulley 8 Extractor 1106 890 4501 Extracting the flywheel 9 Size 13 insert 5910 893 5608 Crank shaft nut 10 Size 17 insert 5910 893 5610 Hexagon bolt of the connecting piece 11 Torque wrench 5910 890 0301 592. 1 Bearing with guard 3 2 2 Check the axial and radial truth of running 7 5 AV handle system frame 20 2 3 V belt 9 2 4 V belt pulley 5 1 Buffer ring 20 clutch drum 9 5 2 Handle frame 21 3 Air filter 11 6 Special servicing tools and aids 23 3 1 Air filter 11 3 2 Filter housing 12 6 1 Special servicing tools 23 6 2 Servicing aids 23 4 Ignition system 13 4 1 Repairing the components 13 4 1 1 Spark plug 13 4 1 2 Module plate 15 4 1 2 1 Ignition timing 15 4 1 2 2 Removal Installation 15 1 Tightening torques Fastener Thread For component Torque Remarks size Nm kpm Self tapping Rubber vibration buffer cheese head screw IS B4 2x9 5 handle frame 3 0 0 3 Flat head screw M4x12 Guard for cutting wheel 3 3 0 33 Cheese head screw IS M4x16 Module plate 4 0 0 4 Cheese head screw IS M5x33 Fan housing 5 0 0 5 Cheese head screw IS M5x30x22 Fan housing 5 0 0 5 Countersunk screw M6x12 Limit stop bearing 7 0 0 7 1 Cheese head screw IS M6x18 Filter housing 6 5 0 65 Cheese head screw IS M6x18 Buffer ring 7 0 0 7 Cheese head screw IS M6x24 Buffer ring handle frame 7 5 0 75 Cheese head screw IS M6x40 Support handle frame 7 5 0 75 Locking screw M8 Filter cover 12 0 1 2 Nut M10X1 Flywheel 27 5 2 75 Nut M10x1 L V belt pulley 32 5 3 25 Nut M10x1 L V belt pulley front 37 5 3 75 Hexagon bolt M10x35 Connecting piece 47 5 4 75 Cheese head screw IS M6x20 Connecting piece 8 5 0 85 Nut M12x0 75 Stop switch 2 7 0 27 M14x1 25 Spark
3. 32 5 Nm 3 25 kpm STIHL TS 360 350 AVE 11 3 AIR FILTER 3 1 Air filter Top Screw plug on top of the filter Bottom Removing the prefilter The purpose of the air filter is to collect the dirt entrained with the combustion air and thus minimize the amount of wear in the power unit Clogged filters reduce the engine efficiency increase the fuel consumption and make it more difficult to start the equipment For this reason the air filter must always be cleaned as soon as the engine power deteriorates Top Unscrewing the wing nut Bottom Removing the main filter 1 Cover lid Before removing the filter close the choke shutter so that dirt cannot enter the carburetor This is done by drawing out the choke Unscrew the screw plug on the filter cover and remove the filter cover Remove the prefilter from the main filter and knock it clean Removing the auxiliary filter Rinse the prefilter in clean naphtha if it is extremely dirty Note The prefilter must be completely dry before it is replaced Unscrew the wing nut on the screw plug Remove the main filter and press the cover lid out of the main filter Note The main filter must be replaced if it is soiled Draw the auxiliary filter off the flange bolt gently tap it clean and rinse in a clean non flammable solution such as hot soapy water Note The auxiliary filter must be replaced immediately if th
4. large wrong spark plug heat range too high Covered with oil Layer of damp carbon oil and soot Fuel mixture contains too much oil Overheated Beading on the insulator nose corroded electrodes Mixture too lean spark plug loose wrong spark plug heat range too low STIHL TS 360 350 AVE 15 4 1 2 Module plate 1 High voltage output 2 Tab The module plate contains all the functional parts required for ignition timing control Only two electrical connections emerge from the coil assembly 1 The high voltage output 2 The tab for connecting the stop switch lead Correct functioning of the module plate can only be checked with the aid of a complex test unit For this reason the workshop tests should be limited exclusively to checking the sparking The complete module plate must be replaced if there is no spark although the leads and stop switch are intact 4 1 2 1 Ignition timing In electronically controlled breakerless magneto ignition systems the ignition timing has been set at 2 1 mm before the UDC at n 8000 rpm and cannot be adjusted Taking into account the permissible variation in the elelctronic circuit this value may range from 1 9 to 2 5 mm before the UDC at n 8000 rpm Since these systems are not subject to mechanical wear the ignition timing does not change during operation However defects inside the circuitry may cause the timing to change in
5. plug 27 5 2 75 1 Only for USA STIHL TS 360 350 AVE 2 DRIVE FOR ABRASIVE BODY 2 1 Bearing with guard Top 1 Guard new version 2 Size 19 fastening bolts for bearing Top Bottom Removing the bearing 1 Guard former version 2 Size 13 fastening bolts for bearing Bottom Pliers 0811 611 8200 Check axial and radial truth of running see 2 2 Lift the bearing with guard out of the V belt Unscrew the fastening bolts on the bearing and remove the guard Draw the axial clamp ring off the shaft Remove the thrust washer Note The former machine versions feature a steel guard and size 13 hexagon bolts Top Removing the axial clamp ring 1 Thrust washer Bottom Unscrewing the nut Lock the V belt pulley Unscrew the nut and draw the V belt pulley off the shaft Important The nut has a left hand thread STIHL TS 360 350 AVE Top 1 Woodruff key 2 Washer Bottom Removing the shaft Remove the Woodruff key from the groove in the shaft Remove the washer from the shaft Draw the shaft out of the deep groove ball bearings Top Flat head screws Bottom Removing the flange Unscrew both flat head screws and remove them together with the spring washers Note Note the number of spring washers Remove the flange from the guard Top 1 Rubber washer 2 Disk Bottom Removing the bearing Remove the disk and rubber
6. surfaces of the thrust washers especially the inner thrust washer contact surfaces not plane genuine STIHL parts have not been used Spindle shaft damaged Distinct radial play in the bearing seat gt spindle bearing defective use of wrong cutting wheels diameter of mount gt 20 mm or gt 22 mm Dirt thrust washers or cutting wheel fitted incorrectly application of force when cutting or during transport Incorrect handling use of force Deep groove ball bearings damaged by exposure to dirt and or bearing seat worn down at the spindle spindle shaft None Replace the thrust washers Replace the spindle shaft Replace the spindle and deep groove ball bearings STIHL TS 360 350 AVE 2 3 V belt Top Fastening screws for the connecting piece and fastening screw on the front handle Bottom Removing the connecting piece Connecting piece with V belt in position Remove the bearing with guard see 2 1 Unscrew the fastening screws on the connecting piece and on the front handle Push the power unit aside slightly and remove the connecting piece Remove the V belt Place a new V belt in the connecting piece Position the connecting piece and retighten the fastening screws Note Check the position of the V belt and that it moves easily before tightening the fastening screws Tighten the two cheese head screws with a torque of 8 5 Nm 0 85 kpm
7. washer from the flange and guard Remove the bearing from the guard STIHL TS 360 350 AVE Top Removing the rubber ring Bottom 1 Rubber washer 2 Disk Remove the rubber ring from the bearing Remove the rubber washer and disk from the bearing Top 1 Countersunk screw 2 Limit stop 3 Cheese head screw 4 Rubber vibration buffer Bottom Pliers 0811 641 8380 Unscrew the countersunk screw and remove the limit stop Unscrew the cheese head screw in order to replace the rubber vibration buffer Note The limit stop and rubber vibration buffer only feature in machines for the USA Top Removing a circlip Bottom Pressing out the deep groove ball bearings with drift pin 4119 893 7200 Remove the circlips from the grooves before removing the deep groove ball bearings Force both deep groove ball bearings and the ring out of the bearing with the drift pin STIHL TS 360 350 AVE Top Fastening bolts for the flange Bottom Fitting the circlip with pliers 0811 641 8380 Unscrew the fastening screws on the flange and remove the flange from the guard The parts are assembled in reverse order Note Particular care must be taken when carrying out the following work Place the circlip in one of the bearing grooves Top 1 Deep groove ball bearing 2 Ring Bottom Pressing in the deep groove ball bearings Slide the fi
8. 10 890 0302 12 Torque wrench 5910 890 0311 5910 890 0312 13 Insert l 5 x 150 0812 542 2104 Tightening the cheese head screws with internal star 14 Screwdriver with T handle QI 5x150 5910 890 2400 For all hexagon socket head screws 6 2 Servicing aids No Part name Part No Application 1 Commercial solvent based Cleaning the crank shaft journal degreasing agent without chlorinated and halogenated hydrocarbons 2 Lubricating grease 0781 120 1111 Needle sleeve 3 Solid adhesive Loctite 270 0786 111 1109 Locking screw for air filter
9. AVE 14 Checking the spark plug The spark plug can only be checked correctly with the aid of a spark plug tester As a provisional measure the spark plug can also be inserted in the ignition lead plug and connected to ground after being dismantled and cleaned Considerable sparking must be evident at the electrodes when the starter is pulled Important Never touch live parts the high voltages can cause fatal accidents Note If in doubt install a new spark plug in place of the old one The cable connections must then be checked if sparking is not observed although the spark plug is in perfect condition Note Frayed insulation on the ignition and stop switch leads can cause short circuits to ground preventing the engine from starting or causing it to malfunction Installation of the spark plug Clean the spark plug and check that the gasket is undamaged Screw in the spark plug and tighten with a torque of 27 5 Nm 2 75 kpm The appearance of the insulator nose the face of the spark plug is a major source of information on the effects of different operating conditions Condition of the insulator nose Examples of corresponding operating conditions Normal Greyish yellow to brown dry Engine OK correct spark plug heat range as specified Charred Velvety dull black layer Mixture too rich lack of air of soot air filter clogged choke partly closed electrode gap too
10. STIHL TS 360 350 AVE Service Manual Cutquik TS 360 350 AVE Only the assemblies and components typically featured in the TS 360 350 AVE are described in this Service Manual All other repair work is described in Manual 08 S You should make use of the illustrated parts list while carrying out repair work They show the installed positions of the individual components and assemblies Microfilmed parts list are always more up to date than printed lists A fault on the machine may have several causes Consult the troubleshooting charts when tracing faults Refer to the Technical Information Bulletins for engineering changes which have been introduced since publication of this service manual Service manuals and technical information bulletins describing engineering changes are intended exclusively for the use of STIHL servicing dealers and staff and must not be passed on to third parties The STIHL Special Tools manual lists all special servicing tools currently available from STIHL Always use original STIHL replacement parts Original STIHL parts can be identified by the STIHL part number the 7JHL logo and the STIHL parts symbol amp The symbol may appear alone on small parts STIHL STIHL TS 360 350 AVE CONTENTS 1 Tightening torques 2 4 1 3 Ignition lead plug 16 4 1 4 Ignition lead 17 4 1 5 Stop switch lead 18 2 Drive for abrasive body 3 4 1 6 Stop switch 18 4 1 7 Flywheel 19 2
11. and see 4 1 2 2 draw the plug off the lead Draw the protective grommet Coat the end of the ignition off the ignition lead lead with oil over a length of approx 20 mm Draw the ignition lead out of the grommet in the crank case Slip the plug onto the ignition lead Grip the ignition lead with suitable pliers and draw it out of its plug STIHL TS 360 350 AVE 18 Top 1 Insulating tube 2 Grommets 3 Ignition lead plug Bottom Piercing the centre of the ignition lead 2 3 Draw the insulating tube and grommets off the ignition lead Remove the ignition lead plug see 4 1 3 Cut the new ignition lead to the required length length as specified in the spare parts list or equal to that of the old lead Note The centre at the end of the lead which is screwed into the ignition module must first be pierced with a sharp tool 4 1 5 Stop switch lead 4 1 6 Stop switch Top 1 Contact sleeve 2 Protective grommet Bottom 1 Fastening nut Removing the stop switch lead 2 Plate 1 Grommet 3 Adapter Remove the filter housing see 3 2 Draw the contact sleeve of the stop switch lead out of the stop switch see 6 1 5 Unscrew the fastening nut on the stop switch and remove the plate Remove the stop switch from the adapter The parts are assembled in reverse order Note The stop switch must be positioned so that t
12. and the hexagon screw with a torque of 47 5 Nm 4 75 kpm Replace the bearing with guard see 2 1 2 4 Top V belt pulley clutch drum Stop screw 1107 191 1200 Bottom Stop screw in cylinder Remove the V belt see 2 3 Unplug the ignition lead Unscrew the spark plug and screw in the stop screw instead turning it into the cylinder as far as possible so that the crank shaft is arrested STIHL TS 360 350 AVE 10 Top Unscrewing the fastening nut Bottom Assembly pin 1119 893 7200 Unscrew the fastening nut from the V belt pulley Important The nut has a left hand thread Draw the V belt pulley off the crank shaft journal Top Forcing out the needle sleeve Bottom Friction surface of the clutch drum Check the needle sleeve and force it off the V belt pulley from the clutch side using an assembly pin if necessary Check the clutch drum it must not show any major signs of wear or scoring Replace the V belt pulley if necessary Draw the bushing and disk off the crank shaft journal Top 1 Disk 2 Bushing Bottom Correctly positioned needle sleeve The parts are assembled in reverse order Note The assembly pin must be positioned on the thicker beaded side of the needle sleeve and forced in from the clutch drum side until it is flush with the inner edge of the V belt pulley Tighten the fastening nut with a torque of
13. e flock coating is defective STIHL TS 360 350 AVE 12 3 2 Filter housing Top Plug on ignition lead Bottom Grommet Remove the air filter see 3 1 Remove the fan housing see 4 1 7 Disconnect the ignition lead from the spark plug Draw the grommet for the ignition lead out of the filter housing Top Locking screw Bottom Fastening screws for the filter housing Unscrew the locking screw from the filter housing Unscrew the fastening screws from the filter housing Note The screws at the rear are located below the manifold Draw the filter housing upwards pressing the manifold out through the opening at the same time Top Removing the filter housing Bottom Positioning the filter housing The parts are assembled in reverse order Note Draw the manifold through the opening before positioning the filter housing and tighten the fastening screws with a torque of 6 5 Nm 0 65 kpm Coat the thread of the locking screw with Loctite see 6 2 and tighten with a torque of 12 0 Nm 1 2 kpm STIHL TS 360 350 AVE 4 IGNITION SYSTEM Important Utmost care must be taken both during troubleshooting and when carrying out mainte nance and repair work on the ignition system The high voltages may cause fatal accidents Module plate The STIHL Cutquiks TS 360 350 AVE are fitted with a transistorized breakerless magneto ignition system that is no
14. e middle screw on the side of the connecting piece and fan side Tighten the fastening screws of the buffer rings with a torque of 7 0 Nm 0 7 kpm STIHL TS 360 350 AVE 21 5 2 Handle frame Top Removing the end sleeve from the guide plate Top 1 Slit pin Middle screw of the buffer ring 2 Nipple on the throttle cable fan side Top Removing the handle frame Bottom Bottom 1 Fastening screws Unscrewing the middle screw in the Bottom 2 Support buffer ring on the handle Fastening screw in the handle moulding Remove the filter housing Unscrew the middle screw in the Draw the handle frame to the see 3 2 buffer ring on the fan side rear and off the machine Disconnect the nipple on the Unscrew the middle screw inthe Note The following steps are throttle cable from the slit pin buffer ring on the handle required in order to replace the and draw the end sleeve out of handle frame the guide plate Unscrew the fastening screw in Unscrew the fastening screws the handle moulding from the bottom support STIHL TS 360 350 AVE 22 Top Top 1 Helical spring Fastening screws 2 Starting throttle button for the buffer ring Bottom Bottom Removing the pin 1 Fastening screw Removing the handle moulding 1 Hole 2 Rubber vibration buffer Unscrew the fastening screw from the rubber vibration buffer and remove the buffer The parts are assembled and refitted in reverse order
15. he groove in the threaded insert points upwards Tighten the fastening nut Slide the protective grommet back a little and draw the contact EN AOPE OL 2 EAR sleeve of the stop switch lead out of the stop switch Remove the ignition lead see 4 1 4 Draw the stop switch lead out of the grommet in the crank case The parts are assembled in reverse order STIHL TS 360 350 AVE 19 4 1 7 Flywheel Top Fastening bolts on the fan housing Bottom Fastening nut on the flywheel Removing the flywheel Use the stop screw to arrest the piston see 2 4 Unscrew the fastening bolts from the fan housing and remove the fan housing Unscrew the fastening nut for the flywheel from the crank shaft Top Extractor 1106 890 4501 Bottom Extracting the flywheel Screw the extractor onto the flywheel and draw the flywheel off the crank shaft There must not be any signs of cracking or other damage on the flywheel and magnet pole otherwise the flywheel must be replaced Installing the flywheel Ensure that the Woodruff key is fitted correctly Top 1 Magnet pole 2 Flywheel Bottom Woodruff key for flywheel Important The journal of the crank shaft and the hole in the flywheel hub must be degreased with a commercial solvent based degreasing agent without chlorinated or halogenated hydrocarbons Position the flywheel Fit the fastening nut and tighten w
16. ith a torque of 27 5 Nm 2 75 kpm The remaining parts are assembled in reverse order STIHL TS 360 350 AVE 20 5 AV HANDLE SYSTEM FRAME 5 1 Buffer ring Top 1 Fastening screw on the front handle 2 Middle screw Bottom Fastening screws on the buffer ring Top 1 Fastening screws in the buffer ring fan side 2 Middle screw Bottom Unscrewing the middle screw 1 Fastening screws in the buffer ring The crank case handle frame and front handle are connected by means of ring shaped rubber vibration buffers Damaged buffers buffer rings must always be replaced Unscrew the fastening screw for the front handle from the handle bracket Unscrew the middle screw from the connecting piece and remove the handle bracket Unscrew the fastening screws in the buffer ring and remove the buffer ring from the handle bracket Unscrew the middle fastening screw in the buffer ring and remove it together with the tear guard Unscrew the fastening screws in the buffer ring and remove the buffer ring Fitting the middle screw 1 Tear guard Remove the filter housing in order to replace the buffer ring on the handle see 3 2 Unscrew the middle screw and the fastening screws in the buffer ring then remove the buffer ring The parts are assembled in reverse order Note The tear guard must be fitted under th
17. ly depressed 5 10 mm by moderately pressing with the fingers in the middle between the two V belt pulleys Important Excessive tension in the V belt increases the wear Since changes in the shaft diameter due to scoring etc can affect the radial truth of running of the cutting wheel it is normally sufficient carefully to inspect the shaft around the cutting wheel mount The axial truth of running on the other hand depends on the state of various components and must therefore be determined by measurement Fit the test wheel and then position the thrust washer so that the arresting lugs engage in the arresting grooves in the shaft revolution of the wheel Refer to the table Test procedure Remove the test equipment after completing the Tighten the screw measurement Secure the gauge holder with dial gauge to the guard cover so that the axial truth of running can be determined for a diameter of approx 130 mm over one full STIHL TS 360 350 AVE Test procedure Actual condition Possible causes Remedy Radial truth of running Visual inspection Wear marks or scoring Fastening screw loose Replace the of the spindle shaft Axial truth of running Check the axial truth of running with the STIHL test wheel or diamond cutting wheel over a diameter of 130 mm around the cutting wheel mount Axial eccentricity lt 0 15 mm gt 0 15 mm Damaged or uneven contact
18. mportant A washer must be placed under the head of each screw Align the module plate so that the markings match Tighten the fastening screws with a torque of 4 0 Nm 0 4 kpm The remaining parts are assembled in reverse order 4 1 3 Ignition lead plug Top 1 Ignition lead plug 2 Grommet Bottom Removing the spiral spring from the ignition lead plug Fis sd A Remove the fan housing see 4 1 7 Disconnect the ignition lead from the spark plug and draw the grommet out of the filter housing Grip the spiral spring with suitable pliers and draw it out of the ignition lead plug STIHL TS 360 350 AVE 17 4 1 4 Ignition lead Top Top Drawing the ignition lead Protective grommet into its plug Bottom Bottom Correct position of the spiral spring in the Removing the ignition lead Inserting the spiral spring recess of the ignition lead plug 1 Grommet Press the hook of the spiral spring into the middle of the conductor cross section approx 15 mm from the end of the ignition lead Pull back the ignition lead until the spiral spring is located in the recess of the ignition lead plug Press the grommet into the mount in the filter housing and slide the spark plug terminal onto the spark plug Replace the fan housing see 4 1 7 Remove the spiral spring Remove the module plate from the ignition lead
19. rst deep groove ball bearing onto the shaft then the ring and the second deep groove ball bearing Position the deep groove ball bearings and press them in with the shaft until they contact the circlip Draw the shaft out of the deep groove ball bearings Place the second circlip in the bearing groove Top Correctly positioned spring washers Bottom Longer collar on the V belt pulley LVV VVV Slide the same number of spring washers onto the flat head screws as were removed during disassembly as shown in the drawing Slip the V belt pulley onto the shaft with the longer chamfered edge first and tighten the nut with a torque of 37 5 Nm 3 75 kpm STIHL TS 360 350 AVE Tightening the segment 1 Fastening bolts 2 2 Check the axial and radial truth of running Top Fitting the test wheel 1 Arresting grooves 2 Arresting lugs 1 Test wheel 5910 851 6100 2 Gauge holder 5910 850 6000 Bottom 2 Segment 3 Dial gauge 0000 890 9100 Test equipment in position 1 2 3 NAO O _A ah Place the segment under the rear bolt on the bearing and lightly tighten the bolt Using a size 13 open jaw wrench turn the segment clockwise until the V belt is correctly tensioned Then securely tighten all three fastening bolts starting with the bolt at the rear with segment Note The V belt is correctly tensioned when it can be slight
20. such a way as to produce positive spark control although the timing itself is outside the permissible range so that the starting and operating characteristics deteriorate 4 1 2 2 Removal and installation Top Grommet Bottom Fastening bolts for the module plate Remove the flywheel see 4 1 7 Remove the filter housing see 3 2 Remove the grommet for the ignition lead from the mount of the crank case Unscrew the fastening bolts from the module plate STIHL TS 360 350 AVE 16 Top Stop switch lead Bottom Drawing the unscrewed ignition lead out of the high voltage dome Remove the module plate from the crank shaft journal and disconnect the stop switch lead from the module plate Draw the module plate slightly forwards pulling the ignition lead out of the grommet in the housing at the same time Remove the protective sleeve from the high voltage dome Markings on the module plate and crank case Unscrew the ignition lead from the contact pin and draw it out of the high voltage dome Note The high voltage dome must be filled with STIHL multipurpose grease 0781 120 1109 before screwing in the ignition lead Important Graphite Molykote grease and silicone insulating paste must not be used Slide the protective sleeve over the high voltage dome Replace the module plate and loosely screw in the screws I
21. t dependent on external power supplies battery dynamo etc The ignition system basically comprises the module plate and flywheel and is easily accessible 13 4 1 Repairing the components 4 1 1 Spark plug Top Checking the electrode gap with a caliper gauge Bottom Adjusting the ground electrode with a Bosch setting gauge Troubleshooting in the ignition system should always start with the spark plug First check the spark plug desig nation if the machine refuses to start if the engine power is unsatisfactory or if the ignition cuts out etc Only Bosch spark plugs of type WSR 6 F or NGK BPMR 7 A may be used Other types of spark plug and plugs made by other manufacturers cannot be used on account of the large electrode size Spark plug blackened or charred Clean with brass wire brush and then blow through with compressed air lt Note Do not use a steel wire g brush S NS Spark plug covered with oil amp Wash the insulator nose with a grease solvent and then blow through with compressed air Electrode gap The electrode gap must be checked regularly with a caliper gauge The gap must be equal to 0 5 mm The gap between electrodes increases as a result of the natural burn off The ground electrode must be adjusted accordingly if necessary Important A new spark plug must be fitted without fail if the electrodes have burned down severely STIHL TS 360 350
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