Stihl HL 92 Instruction Manual Download

Page: 18 / 28

period. The engine develops its maximum power

after about 5 to 15 tank fillings.

11.2

During Operation

After a long period of full throttle operation, allow

the engine to run for a short while at idle speed

so that engine heat can be dissipated by the flow

of cooling air. This protects engine-mounted

components (ignition, carburetor) from thermal

overload.

11.3

After Finishing Work

Storing for a short period: Wait for the engine to

cool down. Empty the fuel tank and keep the

machine in a dry place, well away from sources

of ignition, until you need it again. For longer out-

of-service periods – see "Storing the Machine".

12 Cleaning the Air Filter

12.1

If there is a noticeable loss of

engine power

0208BA034 KN

► Set knob for warm start (1) to

► Turn screw (2) in filter cover (3) counterclock‐

wise until the cover is loose

► Remove filter cover (3)

► Clean away loose dirt from around the filter

0208BA035 KN

► Grip into the recess (4) in the filter housing

and remove the felt filter (5)

► Replace felt filter (5) – as a temporary meas‐

ure you can knock it out on the palm of you

hand or blow it out with compressed air – do

not wash

NOTICE

Replace any damaged parts!
► Insert felt filter (5) form-fittingly into the filter

housing

► Set knob for warm start (1) to

► Fit filter cover (3) – make sure not to tilt the

screw (2) – insert screw and tighten

13 Engine Management

Exhaust emissions are controlled by the design

of the engine and components (e.g. carburation,

ignition, timing and valve or port timing).

14 Adjusting the Carburetor

0208BA036 KN

The carburetor of the machine has been adjus‐

ted at the factory for optimum performance and

fuel efficiency in all operating states.

14.1

Setting the idle speed

Engine stops when idling

► Turn the idle speed screw (LA) slowly clock‐

wise until the engine runs smoothly.

Cutting blades move when idling

► Turn the idle speed adjusting screw (LA)

slowly counterclockwise until the cutting

blades stop moving

WARNING

If the cutting blades continue to move in idle

even after adjustment, have the machine

repaired by a STIHL servicing dealer.

15 Spark Plug

► If the engine is down on power, difficult to start

or runs poorly at idle speed, first check the

spark plug.

English

12 Cleaning the Air Filter

0458-519-8321-D

Summary of Contents for HL 92

Page 1: ...HL 94 2 26 Instruction Manual ...

Page 2: ...ly improve all of its products For this reason we may modify the design engineering and appearance of our products periodically Therefore some changes modifications and improvements may not be covered in this man ual 2 Safety Precautions and Working Techniques Because a long reach hedge trimmer is a high speed fast cutting power tool with very sharp cutting blades and a long reach special safety p...

Page 3: ...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 for personal injury and damage to property caused while using unauthorized attachments Do not use a high pressure washer to clean the power tool The solid jet of water may damage parts of the unit Do not spray the machine with water ...

Page 4: ...and in safe operating condition clean sharp not bent or warped correctly mounted and thor oughly sprayed with STIHL resin solvent lubri cant For machines with adjustable cutter bar The adjustment mechanism must be snapped into the start position For machines with a defined transport position cutter bar folded against the shaft Never start the machine in the transport position Never attempt to modi...

Page 5: ...ge before starting work Check for correct idling so that the cutting blades stop moving when the throttle trigger is released Check and correct the idle speed set ting at regular intervals If the cutting blades still run have your dealer check your machine and make proper adjustments or repairs Note that the cutting blades continue to run for a short period after you let go of the throttle trigger...

Page 6: ...against wire fences Do not touch electric power lines never cut through electric power lines risk of electrocu tion Do not touch the cutting blades while the engine is running If the cutting blades become jammed by an object switch off the engine immediately before attempting to remove the object risk of injury Opening the throttle when the cutting blades are jammed increases the load and reduces ...

Page 7: ...dle speed adjustments Do not turn the engine over on the starter with the spark plug boot or spark plug removed since there is otherwise a risk of fire from uncontained sparking To reduce the risk of fire do not service or store your machine near open flames Check the fuel filler cap for leaks at regular inter vals Use only a spark plug of the type approved by STIHL and make sure it is in good con...

Page 8: ...cutting blades do not rest the cutter bar on the ground WARNING The K version HL 92 K is not approved for cut ting close to the ground 3 5 2 Vertical Cut with cutter bar at an angle 388BA030 KN Cutting without standing directly next to the hedge e g flowerbed between operator and hedge Swing the cutter bar up and down in an arc as you move along the hedge use both sides of the cutting blades Engli...

Page 9: ...n an arc to make maximum use of its reach WARNING Any working position above head height is tiring To minimize the risk of accidents work in such positions for short periods only Set the adjusta ble cutter bar to the most suitable angle so that the unit can be held in a lower less tiring position while still providing adequate reach 3 5 5 Horizontal Cut with straight cutter bar 388BA032 KN Hold th...

Page 10: ... BF 2 3 Cultivator with pick tines SP 10 Special harvester 5 Assembling the Unit 5 1 Mounting the Loop Handle HL 92 HL 94 Loop handle is required on versions with long drive tube HL 92 HL 94 7 8 2 1 6 7 8 9 9 3 5 4 0000 GXX 1679 A0 Place the clamp 1 in the loop handle 2 and position them both against the drive tube 5 between the carrying ring 3 and handle hose 4 Position the clamp 6 against the sh...

Page 11: ...1 fully home as far as stop Tighten down the clamp screws moderately Line up the gearbox 11 with the powerhead Tighten down the clamp screws firmly 6 Fuel The engine requires a mixture of gasoline and engine oil WARNING Avoid direct skin contact with fuel and breathing in of gasoline fumes 6 1 STIHL MotoMix STIHL recommends using STIHL MotoMix This pre blended fuel is free of benzene and lead is d...

Page 12: ...ers Liters ml 1 0 02 20 5 0 10 100 10 0 20 200 15 0 30 300 20 0 40 400 25 0 50 500 Pour oil into an approved safety fuel canister first then add gasoline and mix thoroughly 6 3 Storing fuel mixture Store in approved safety fuel canisters only in a dry cool and secure place protected against light and sunlight Fuel mixture deteriorates with age mix only as much as needed for a few weeks Do not stor...

Page 13: ...ible by hand 8 Adjusting the Cutter Bar 8 1 Angle Adjuster 145 0000 GXX 1683 A0 145 The angle of th cutter bar can be adjusted upwards in 4 stages from 0 straight to 55 and downwards in 7 stages from 0 to 90 right angle facing down There are therefore 12 pos sible working positions WARNING To reduce the risk of injury carry out the adjust ment only when the cutting blades are at a standstill engin...

Page 14: ...t position to the normal working position WARNING The gearbox gets hot during operation To reduce the risk of burn injury do not touch the gearbox 0000 GXX 1686 A0 1 2 3 Shut off the engine Fit the blade scabbard Pull back the sliding sleeve 1 and use the lever 2 to swing the joint upwards in direc tion of drive tube until the cutter bar is flat against the drive tube Release the sliding sleeve 1 ...

Page 15: ...nd putting down the machine as you would in an emergency To avoid damage do not throw the machine to the ground when practicing Practice quickly detaching the power tool from the carabiner as described under Disconnecting Machine from Shoulder Strap If you are using a shoulder strap Practice slip ping the strap off your shoulder 10 Starting Stopping the Engine 10 1 Controls 0208BA066 KN 2 1 4 3 1 ...

Page 16: ...d 10 2 Starting the Engine 5 0000 GXX 5224 A0 Press the manual fuel pump bulb 5 at least five times even if the bulb is already filled with fuel Cold engine cold start 2 1 6 0000 GXX 5475 A0 Turn choke knob 6 and then push it in at g Also use this setting if the engine has been run ning but is still cold Turn throttle set wheel in direction of as far as stop Hot engine hot start Choke knob 6 remai...

Page 17: ...release the stop switch it springs back to the run position 10 4 Other Hints on Starting Engine stalls in cold start position g Depress throttle trigger lockout and pull the throttle trigger the choke knob moves to the run position F Continue cranking in position F until the engine runs Running engine stalls in cold start position g or under acceleration Continue cranking in position F until the e...

Page 18: ...ary meas ure you can knock it out on the palm of you hand or blow it out with compressed air do not wash NOTICE Replace any damaged parts Insert felt filter 5 form fittingly into the filter housing Set knob for warm start 1 to g Fit filter cover 3 make sure not to tilt the screw 2 insert screw and tighten 13 Engine Management Exhaust emissions are controlled by the design of the engine and compone...

Page 19: ... Too much oil in fuel mix Dirty air filter Unfavorable running conditions 1 000BA045 KN WARNING Arcing may occur if the adapter nut 1 is loose or missing Working in an easily combustible or explosive atmosphere may cause a fire or an explosion This can result result in serious inju ries or damage to property Use resistor type spark plugs with a properly tightened adapter nut 15 3 Installing the Sp...

Page 20: ... of grease into the filler hole Squeeze up to 5 g 1 5 oz grease into the gearbox NOTICE Do not completely fill the gearbox with grease Unscrew the tube of grease from the filler hole Refit the filler plug and tighten it down firmly 17 Sharpening Instructions When cutting performance and behavior begin to deteriorate i e blades frequently snag on branches Resharpen the cutting blades It is best to ...

Page 21: ... If the engine speed increases or if the cutting blades run the throttle cable has to be adjusted Shut off the engine Have throttle cable adjusted by your dealer STIHL recommends an authorized STIHL servicing dealer 19 2 Spark arresting screen in muf fler WARNING To reduce the risk of fire caused by hot particles escaping from the machine never operate the machine without a spark arresting screen ...

Page 22: ... apply for normal operating conditions The specified intervals must be short ened accordingly when working for longer than nor mal or under difficult cutting conditions extensive dust etc Before starting work At the end of work and or daily Whenever tank is refilled Weekly Monthly Annually If faulty If damaged As required Complete machine Visual inspection safe condition leaks X X Clean X Replace ...

Page 23: ...ned by dealer2 X Spark arresting screen in muffler Check if installed X Check or replace2 X Spacer molded to the cover Check5 X Have hood replaced by dealer2 X X All accessible screws nuts and bolts not adjusting screws Tighten X Anti vibration elements Visual inspection3 X X X Have replaced by serv icing dealer2 X Cutting blades Visual inspection X X Clean4 X sharpen4 X X Gearbox lubrication chec...

Page 24: ...o stroke engine Displacement 24 1cm3 Cylinder bore 35 mm Piston stroke 25 mm Engine power to ISO 8893 0 9 kW 1 2 hp at 8500 1 min Idle speed 2800 rpm Cut off speed nominal value 9300 rpm 23 2 Ignition system Magneto ignition system electronic Spark plug sup pressed NGK CMR6H BOSCH USR 4AC Electrode gap 0 5 mm 23 3 Fuel system Fuel tank capacity 540 cm3 0 54 l 23 4 Weight Weight without fuel with 0...

Page 25: ...roduct specific technical data The measured CO2 value was determined on a representative engine in accordance with a standardized test procedure under laboratory conditions and does not represent either an explicit or implied guarantee of the performance of a specific engine The applicable exhaust emission requirements are fulfilled by the intended usage and mainte nance described in this User Man...

Page 26: ...eloped and manu factured in compliance with the following stand ards in the versions valid on the date of produc tion EN ISO 10517 EN 55012 EN 61000 6 1 The measured and guaranteed sound power lev els were determined according to Directive 2000 14 EC Annex V using the ISO 11094 standard Measured sound power level All HL 94 models 101 dB A Guaranteed sound power level All HL 94 models 103 dB A Tech...

Page 27: ...26 EC Declaration of Conformity English 0458 519 8321 D 27 ...

Page 28: ...www stihl com 04585198321D 04585198321D 0458 519 8321 D 0458 519 8321 D ...

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