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STIHL HT 131

Instruction Manual

Summary of Contents for HT 131

Page 1: ...STIHL HT 131 Instruction Manual ...

Page 2: ......

Page 3: ...roduct Your Dr Nikolas Stihl Guide to Using this Manual 2 Safety Precautions and Working Techniques 2 Using the Unit 8 Assembling the Unit 10 Cutting Attachment 11 Mounting the Bar and Chain 11 Tensioning the Chain 12 Checking Chain Tension 13 Adjusting the Throttle Cable 13 Fitting the Clip 13 Fuel 14 Fueling 15 Chain Lubricant 15 Filling Chain Oil Tank 16 Checking Chain Lubrication 18 Maintainin...

Page 4: ...e Have your dealer or other experienced user show you how to operate your machine or attend a special course to learn how to operate it Minors are not allowed to work with the power tool except adolescents above 16 years of age who are instructed under supervision Children animals and bystanders must remain at a distance When not using the machine it must be laid down in such a way that it does no...

Page 5: ...ssories in order to avoid the risk of accidents and damage to the machine STIHL recommends the use of STIHL original tools guide bars saw chains chain sprockets and accessories They are specifically designed to match the product and meet your performance requirements Never attempt to modify your power tool in any way since this may increase the risk of personal injury STIHL excludes all liability ...

Page 6: ...ction throttle trigger must return automatically to idle position The choke lever must spring back from the g and positions to the run position F when the throttle trigger lockout and throttle trigger are squeezed Check that the spark plug boot is secure a loose boot may cause sparking that could ignite combustible fumes and cause a fire Never attempt to modify the controls or safety devices Keep ...

Page 7: ... cables at greater distance Have the power switched off before starting work in the immediate vicinity of power lines Switch off the engine before changing the saw chain Risk of injury Ensure that the engine idling speed is correct The saw chain must not move when the throttle trigger has been released It the saw chain continues moving have the machine repaired by your specialist dealer Check and ...

Page 8: ...rted away from your body Risk of fire Limbing Hold the power tool at an angle Do not stand directly underneath the limb being cut Do not exceed an angle of 60 from the horizontal Watch for falling wood Keep the work area clear remove interfering limbs and brush Before sawing branches establish an escape route and remove all obstacles When performing the separating cut position the bar against the ...

Page 9: ... the above symptoms appear e g tingling sensation in fingers seek medical advice Maintenance and Repairs Service the machine regularly Do not attempt any maintenance or repair work not described in the instruction manual Have all other work performed by a servicing dealer STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer STIHL ...

Page 10: ...the harness Cutting sequence To allow branches to free fall always cut the lower branches first Prune heavy branches large diameter in several controllable pieces WARNING Never stand directly underneath the branch you are cutting be wary of falling branches Note that a branch may spring back at you after it hits the ground risk of injury Disposal Do not throw cuttings into the garbage can they can...

Page 11: ...is more than 10 cm 4 in first N perform the undercut 3 and then cross cut at a distance of about 20 cm 8 in A from the final cut Then carry out the flush cut 4 starting with a relieving cut and finishing with a cross cut Cutting above obstacles The machine s long reach makes it possible to prune branches that are overhanging obstacles such as rivers or lakes The tool angle in this case depends on ...

Page 12: ...Push the shaft 2 in the direction of the control handle 7 and the housing 8 and turn it until the distance c 2 cm and d 4 cm N Align the housing 8 with the manual fuel pump facing up the control handle 7 with the stop switch facing up and the transmission 3 with the oil tank cap facing up as shown N Tighten down the screws 9 firmly The pole pruner does not need to dismantled again Assembling the U...

Page 13: ... short period of operation Chain Scabbard The scope of supply includes a bar scabbard that matches the cutting attachment If guide bars of different lengths are mounted to the pole pruner always use a chain scabbard of the correct length which covers the complete guide bar The length of the matching guide bars is marked on the side of the chain scabbard Removing the chain sprocket cover N Unscrew ...

Page 14: ...the cover and screw on the nut fingertight N Go to chapter on Tensioning the Saw Chain Re tensioning during cutting work N Shut off the engine N Loosen nuts N Raise the guide bar at the nose N Use the screwdriver to turn the screw 1 to the right until the saw chain rests against the underside of the guide bar N Raise the guide bar further and tighten the nuts securely N Next step Continue with Che...

Page 15: ...ble only when the unit is completely and properly assembled N Set the throttle trigger to the full throttle position N Carefully rotate the screw in the throttle trigger in the direction of the arrow until you feel initial resistance Then rotate it another half turn in the same direction Clip On Carrying Ring only versions with telescoping shaft Position of carrying ring Depending on the shaft len...

Page 16: ...se only STIHL two stroke engine oil or another high performance engine oil in accordance with JASO FB JASO FC JASO FD ISO L EGB ISO L EGC or ISO L EGD STIHL specifies STIHL HP Ultra two stroke engine oil or an equivalent high performance engine oil in order to maintain emission limits over the machine s service life Mix Ratio STIHL 50 1 two stroke engine oil 50 parts gasoline to 1 part oil Example...

Page 17: ...of the chain and guide bar use only an environmentally compatible quality chain and bar lubricant Rapidly biodegradable STIHL BioPlus is recommended NOTICE Biological chain oil must be resistant to aging e g STIHL BioPlus since it will otherwise quickly turn to resin This results in hard deposits that are difficult to remove especially in the area of the chain drive and chain It may even cause the...

Page 18: ...ertical position N Turn the cap counterclockwise about a quarter turn Marks on tank cap and oil tank must line up N Remove the tank cap Filling Up with Chain Oil N Fill the tank with chain oil Take care not to spill chain oil while refilling and do not overfill the tank STIHL recommends you use the STIHL filler nozzle for chain oil special accessory Closing Grip must be vertical N Fit the cap mark...

Page 19: ...the tank cap cannot be locked in the oil tank opening Bottom of cap is twisted in relation to top N Remove the cap from the oil tank and check it from above N Place the cap on the opening and rotate it counterclockwise until it engages the filler neck N Continue rotating the cap counterclockwise about a quarter turn this causes the bottom of the cap to be turned to the correct position N Turn the ...

Page 20: ...he new parts to the shape and size of the original parts Carbide tipped saw chains Duro are particularly wear resistant STIHL recommends you have your chain resharpened by a STIHL servicing dealer WARNING It is absolutely essential to comply with the angles and dimensions specified below If the saw chain is incorrectly sharpened and in particular if the depth gauge is set too low there is an incre...

Page 21: ...y N Select sharpening tools according to chain pitch N If you use an FG 2 HOS or USG sharpener Remove the chain from the bar and sharpen according to the instructions supplied with the tool N Clamp the bar in a vise if necessary N Sharpen the chain frequently take away as little metal as possible two or three strokes of the file are usually enough N Hold the file horizontally at a right angle to t...

Page 22: ...the chain N Place a filing gauge 1 that matches the chain pitch on the chain and press it against the cutter if the depth gauge projects from the filing gauge the depth gauge has to be lowered Saw chains with humped drive link 2 upper part of humped drive link 2 with service mark is lowered along with the depth gauge WARNING The other parts of the humped drive link must not be filed since this may...

Page 23: ... holder Filing gauge Flat file Sharpening kit 1 inch mm mm inch Part No Part No Part No Part No Part No 1 4 P 6 35 3 2 1 8 5605 771 3206 5605 750 4300 0000 893 4005 0814 252 3356 5605 007 1000 1 4 6 35 4 0 5 32 5605 772 4006 5605 750 4327 1110 893 4000 0814 252 3356 5605 007 1027 3 8 P 9 32 4 0 5 32 5605 772 4006 5605 750 4327 1110 893 4000 0814 252 3356 5605 007 1027 0 325 8 25 4 8 3 16 5605 772 ...

Page 24: ... of the strap N With the power tool attached the carabiner 2 must be at about the same height as your right hip N Put the backpack carrying system 1 on your back and adjust it as described in the instruction leaflet provided N Attach the carabiner 3 to the clip on carrying ring 2 on the shaft N Attach the pole pruner to the carrying strap when cutting Adjusting the Telescoping Shaft 390BA049 KN Fi...

Page 25: ...gine stopped when the stop switch is pressed The stop switch returns automatically to the Run position when it is released The ignition is switched on again after the engine stops the engine is then ready to start Starting the Engine N Press the manual fuel pump bulb 9 at least five times even if the bulb is already filled with fuel N Press in the choke knob 8 and turn it to the position that suit...

Page 26: ...runs As soon as the engine runs N Press down the throttle trigger lockout and open the throttle the choke knob moves to the run position F After a cold start warm up the engine by opening the throttle several times WARNING Risk of injury from saw chain running when the engine is idling Adjust the carburetor so that the saw chain does not run when the engine is idling see Adjusting the Carburetor Y...

Page 27: ...the bar and can still be pulled along the bar by hand Retension if necessary see Tensioning the Saw Chain Chain at operating temperature The chain stretches and begins to sag The drive links must not come out of the bar groove the chain may otherwise jump off the bar Retension the chain see Tensioning the Saw Chain NOTICE The chain contracts as it cools down If it is not slackened off it can damag...

Page 28: ...e oil inlet hole 1 the oilway 2 and the bar groove 3 N Measure the groove depth with the scale on the filing gauge special accessory in the area used most for cutting If groove depth is less than specified N Replace the guide bar The drive link tangs will otherwise scrape along the bottom of the groove the cutters and tie straps will not ride on the bar rails Taking Care of the Guide Bar Chain typ...

Page 29: ...gine for about 3 minutes N Turn the idle speed screw LA slowly clockwise until the engine runs smoothly the saw chain must not rotate Chain rotates when engine is idling N Turn the idle speed screw LA counterclockwise until the chain stops running and then turn the screw another 1 2 to 3 4 turn in the same direction WARNING If the chain continues moving when the engine is idling have your power to...

Page 30: ...hten down the spark plug 3 with the combination wrench N Press the boot 2 firmly onto the spark plug N Fit the cover 1 and screw it down firmly For periods of 3 months or longer N Drain and clean the fuel tank in a well ventilated area N Dispose of fuel properly in accordance with local environmental requirements N Run the engine until the carburetor is dry this helps prevent the carburetor diaphr...

Page 31: ...auge special accessory to check the depth of the wear marks It is best to use two saw chains in rotation with one sprocket STIHL recommends the use of original STIHL chain sprockets The chain sprocket is driven via a friction clutch Have the chain sprocket replaced by a servicing dealer STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicin...

Page 32: ...l pump if fitted Check X Have repaired by servicing dealer1 X Pickup body filter in fuel tank Have checked by servicing dealer1 X Have replaced by servicing dealer1 X X X Fuel tank Clean X X Carburetor Check idle adjustment chain must not rotate X X Adjust idle speed X Spark plug Readjust electrode gap X Replace after every 100 operating hours Cooling inlets Visual inspection X Clean X Cylinder fi...

Page 33: ...y servicing dealer1 X Safety labels Replace X 1 STIHL recommends an authorized STIHL servicing dealer 2 Only if there is a noticeable loss of engine power The following intervals apply to normal operating conditions only If your daily work ing time is longer or operating conditions are difficult very dusty work area etc shorten the specified intervals accordingly before starting work after finishi...

Page 34: ...r STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information If these maintenance operations are not carried out as specified the user assumes responsibility for any damage that may occur Among other par...

Page 35: ... 11 Guide Bar 12 Oil Tank 13 Telescopic Drive Tube 14 Clamp Nut 15 Chain Sprocket Cover 16 Hook 17 Chain Scabbard 18 Chain Tensioner 19 Chain Sprocket 20 Machine Support 21 Fuel Tank 22 Tank Cap 23 Carburetor Adjusting Screws 24 Manual Fuel Pump 25 Starter Grip 26 Cover 27 Muffler Serial Number Main Parts 4 6 7 8 9 21 22 23 24 25 3 1 10 11 2 5 15 12 20 17 16 19 13 14 27 26 18 0000 GXX 7619 A0 ...

Page 36: ...l and sound power level the K factor in accordance with Directive 2006 42 EC is 2 0 m s2 for the vibration level REACH REACH is an EC regulation and stands for the Registration Evaluation Authorisation and Restriction of Chemical substances For information on compliance with the REACH regulation EC No 1907 2006 see www stihl com reach Specifications Displacement 36 3cm3 Cylinder bore 43 mm Piston ...

Page 37: ...ed out exclusively by an authorized STIHL servicing dealer STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information When repairing the machine only use replacement parts which have been approved by STIHL for this power tool or are technically identical Only use high quality replacement parts in order to avoid the risk of...

Page 38: ...55012 EN 61000 6 1 The EC type examination was carried out by TÜV Süd Product Service GmbH NB 0123 Ridlerstraße 65 D 80339 München Technical documents deposited at ANDREAS STIHL AG Co KG Produktzulassung The year of manufacture and serial number are applied to the product Done at Waiblingen 03 02 2020 ANDREAS STIHL AG Co KG pp Dr Jürgen Hoffmann Head of Product Data Regulations and Licensing EC De...

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