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It is important that you read and

understand the User Manual before

commissioning and keep it in a safe

place for future reference. Non-com‐

pliance with the User Manual may

cause serious or even fatal injury.

Observe all applicable local safety regulations,

e.g. by trade organizations, social insurance

institutions, labor safety authorities etc.
If you have never used a power tool before:

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 should never be allowed to use the

machine – except for apprentices over the age of

16 when working under supervision.
Children, animals and onlookers must remain at

a safe distance.
When not using the machine, it must be laid

down in such a way that it does not endanger

anyone. Ensure that the machine cannot be

used without authorization.
The user is responsible for accidents or risks

involving third parties or their property.
Do not lend or rent your power tool without the

User Manual. Be sure that anyone using it under‐

stands the information contained in this manual.
The use of machines that emit noise may be limi‐

ted to certain hours of the day as specified by

national and/or regional or local regulations.
Anyone operating the machine must be well res‐

ted, in good physical health and in good mental

condition.
If you have any condition that might be aggrava‐

ted by strenuous work, check with your doctor

before operating a machine.
If you have a pacemaker: The ignition system of

your machine produces an electromagnetic field

of very low intensity. This field may interfere with

some pacemakers. STIHL recommends that per‐

sons with pacemakers consult their physician

and the pacemaker manufacturer to reduce any

health risk.
Anyone who has consumed alcohol or drugs or

medicines affecting their ability to react must not

operate a power tool.
Depending on the cutting attachment fitted, use

your power tool only for cutting grass, wild

growth, shrubs, scrub, bushes, small diameter

trees and similar materials.

The machine must not be used for any other pur‐

poses – risk of accidents!
Only use cutting attachments and accessories

that are explicitly approved for this power tool

model by STIHL or are technically identical. If

you have any questions in this respect, consult

your dealer. Use only high-quality parts and

accessories. in order to avoid the risk of acci‐

dents and damage to the machine.
STIHL recommends the use of genuine STIHL

tools 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 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.
The guard provided with your machine may not

protect the operator from all foreign objects

(gravel, glass, wire etc.) ejected by the revolving

cutting attachment. Ejected objects may also ric‐

ochet and strike the operator.

2.1

Clothing and equipment

Wear proper protective clothing and equipment.

Clothing must be sturdy but allow

complete freedom of movement.

Wear close-fitting clothes such as a

boiler suit, not a loose jacket.
Do not wear clothing which could

become trapped in wood, brush or

moving parts of the machine. Do not

wear a scarf, necktie or jewelry. Tie

up and confine long hair above your

shoulders.
Wear safety boots with steel toe caps

and non-slip soles.

Sturdy shoes with non-slip shoes are permissible

only when using mowing heads.

WARNING

To reduce the risk of eye injuries,

wear close-fitting safety glasses in

accordance with European Standard

EN 166. Make sure the safety

glasses are a snug fit.

2 Safety Precautions and Working Techniques

English

0458-433-0121-B

3

Summary of Contents for FS 311

Page 1: ...STIHL FS 311 Instruction Manual 2 36...

Page 2: ...ncerning this product Your Dr Nikolas Stihl 1 Guide to Using this Manual 1 1 Pictograms The meanings of the pictograms attached to the machine are explained in this manual Depending on the model conce...

Page 3: ...t must not operate a power tool Depending on the cutting attachment fitted use your power tool only for cutting grass wild growth shrubs scrub bushes small diameter trees and similar materials The mac...

Page 4: ...the fuel cap as tightly as possible This helps reduce the risk of unit vibrations caus ing an incorrectly tightened fuel cap to loosen or come off and spill quantities of fuel Check for leaks Do not...

Page 5: ...ot exhaust gases and hot muffler surfaces risk of fire 2 6 Holding and guiding the machine Always hold the unit firmly with both hands on the handles Make sure you always have a firm and secure footin...

Page 6: ...not be con trolled in this position To reduce the risk of injury from ejec ted objects never operate the unit without the correct deflector for the type of cutting attachment being used Check the work...

Page 7: ...achment ensure that the diameter of your metal cutting attachment is not too big Also the attachment must not be too heavy It must be made of high quality materials and have a suitable geometry shape...

Page 8: ...elements at regular intervals 2 12 Symbols on Deflectors An arrow on the deflector shows the correct direction of rotation of the cutting attachments Some of the following symbols are applied to the...

Page 9: ...uip the mowing head only with nylon line as described in the instruction leaflets WARNING Never use wire in place of the nylon mowing line risk of injury 2 16 STIHL Polycut Mowing Head with Polymer Bl...

Page 10: ...chment comes into contact with a solid object 2 18 Grass Cutting Blade 000BA020 KN Use for grass and weeds only sweep the brushcutter in an arc like a scythe WARNING Improper use may damage the grass...

Page 11: ...ion when using this method of cutting The higher the cutting attach ment is off the ground the greater the risk of injury from cuttings being thrown sideways Warning Improper use may damage the shred...

Page 12: ...IHL recommends that you use the non sha ded area of the circular saw blade Always start the cut with this area of the blade 3 Approved Combinations of Cutting Attachment Deflector Limit Stop and Harne...

Page 13: ...lar saw blade 200 22 HP chisel tooth 4000 WARNING Non metal grass cutting blades brush knives shredder blades and circular saw blades are not permitted 3 3 Deflectors limit stop 14 Deflector for mowin...

Page 14: ...tube Tighten down the clamp screw 3 firmly 9 5 7 8 4 9 0000 GXX 0525 A0 6 7 Take out the screw 5 the nut 6 remains in the control handle 7 Push the control handle onto the handlebar 4 until the holes...

Page 15: ...t the throttle trigger to the full throttle posi tion Carefully rotate the screw in the throttle trigger in the direction of the arrow until you feel initial resistance Then rotate it another half tur...

Page 16: ...cing power tool on the ground 002BA406 KN Shut off the engine Lay your power tool on its back so that the cut ting attachment mounting face is pointing up 7 2 Use the Right Guard Ring Your power tool...

Page 17: ...replace a thrust plate if the guard washer is missing 7 5 Cleaning Gearbox Mounting Hardware for Cutting Attach ment 002BA407 KN 1 2 3 4 NOTICE Check inside of guard ring 4 and area around it for dirt...

Page 18: ...Attachments Keep the leaflet and packaging of the metal cut ting attachment in a safe place WARNING Wear protective gloves to reduce the risk of direct contact with the sharp cutting edges Mount only...

Page 19: ...ware off the gearbox 7 12 Mounting Shredder Blade 270 2 Notice on new machines that come standard with a mowing head only In addition to the shredder blade mounting kit a shredder blade retrofit kit i...

Page 20: ...e It is availa ble from your servicing dealer Change the guard ring Recommendation The guard ring must be mounted with particular care Have this work per formed by your servicing dealer STIHL recom me...

Page 21: ...octane rating and ensures that you always use the right mix ratio STIHL MotoMix uses STIHL HP Ultra two stroke engine oil for an extra long engine life MotoMix is not available in all markets 8 2 Mix...

Page 22: ...ghly shake the mixture in the canister before fueling your machine WARNING Pressure may build up in the canister open it carefully Clean the fuel tank and canister from time to time Dispose of remaini...

Page 23: ...Find the right attachment point for the cutting attachment you are using see Balancing the Brushcutter 11 Balancing the Machine The unit is balanced differently depending on the cutting attachment use...

Page 24: ...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 12 2 Starting the Engine 0000 GXX 0478 A0 Press the man...

Page 25: ...A0 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 There i...

Page 26: ...13 1 Using Transport Guard The type of transport guard depends on the metal cutting attachment supplied with the machine Transport guards are available as spe cial accessories 13 2 230 mm Grass Cuttin...

Page 27: ...Circular Saw Blades 681BA302 KN 681BA275 KN 1 2 Disconnect wire rod from the transport guard 681BA276 KN Swing wire rod outwards Fit transport guard on saw blade from below making sure the limit stop...

Page 28: ...ition carburetor from thermal overload 14 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 sour...

Page 29: ...L see Specifica tions 17 1 Removing the Spark Plug 3 2 1 0000 GXX 0537 A0 Remove the cover 1 Pull off the spark plug boot 2 Unscrew the spark plug 3 17 2 Checking the Spark Plug 000BA039 KN A Clean di...

Page 30: ...rent blade 2 in any way See cutting attachment packaging for additional sharpening instructions Keep the packaging for future reference 19 1 Balancing After resharpening about 5 times check the cuttin...

Page 31: ...er blade on the deflec tor Rotating the spool from one stop to the next advances about 4 cm 1 1 2 in of fresh line 20 4 Replacing Nylon Line STIHL PolyCut Precut lengths of nylon line can be fitted to...

Page 32: ...ave repaired by a spe cialist dealer1 X Fuel pickup body in fuel tank Have checked by dealer1 X Have replaced by serv icing dealer1 X X X Fuel tank Clean X X Carburetor Check idle adjustment cutting a...

Page 33: ...onsequential damage caused by continuing to use the product with defective components 22 1 Maintenance Work All the operations described in the Maintenance Chart must be performed on a regular basis I...

Page 34: ...gger 9 Stop switch 10 Throttle trigger lockout 11 Bike handle handlebar 12 Clamp screw 13 Carrying strip 14 Choke knob 15 Air filter cover 16 Fuel tank Serial number 1 002BA412 KN 2 3 1 Mowing head 2...

Page 35: ...with mowing head 110 dB A with metal tool 110 dB A 24 6 3 Vibration level ahv eq to ISO 22867 Handle left Handle right with mowing head 2 2 m s2 2 8 m s2 with metal tool 2 9 m s2 2 9 m s2 The K factor...

Page 36: ...approved disposal site for envi ronment friendly recycling Contact your STIHL servicing dealer for the lat est information on waste disposal 27 EC Declaration of Con formity ANDREAS STIHL AG Co KG Bad...

Page 37: ...27 EC Declaration of Conformity English 0458 433 0121 B 37...

Page 38: ...English 27 EC Declaration of Conformity 38 0458 433 0121 B...

Page 39: ...27 EC Declaration of Conformity English 0458 433 0121 B 39...

Page 40: ...www stihl com 04584330121B 04584330121B 0458 433 0121 B 0458 433 0121 B...

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