Stihl Fs 55 R Instruction Manual

							FS 55, FS 55 C, FS 55 R, FS 55 RCEnglish
39 1Fuel Pump
2Carburetor Adjusting Screws
3Spark Plug Boot
4Starter Grip
5Muffler with Spark Arresting Screen
6Throttle Trigger
7Slide Control
8Throttle Trigger Lockout
9Bike Handle
10Handle Support
11Carrying Ring
12Throttle Cable Retainer
13Choke Lever
14Air Filter Cover
15Fuel Filler Cap
16Fuel Tank
17Machine Support
18Loop Handle
19Barrier Bar
20Drive Tube
21Stop Switch
#Serial Number
Main Parts
20
7
8
6
233BA042 KN
18
21
1
5
4
9
10
1112
13
14
15
16
2
3
17
20
#
1119
68 
						

							FS 55, FS 55 C, FS 55 R, FS 55 RC
English
40
Definitions
1Fuel Pump
Provides additional fuel feed for a 
cold start.
2 Carburetor Adjusting Screws For tuning the carburetor.
3 Spark Plug Boot Connects the spark plug with the 
ignition lead.
4 Starter Grip The grip of the pull starter, for 
starting the engine.
5 Muffler with Spark Arresting  Screen
Muffler reduces engine exhaust 
noise and diverts exhaust gases 
away from operator.
Spark arresting screen is designed 
to reduce the risk of fire.
6 Throttle Trigger Controls the speed of the engine.
7 Slide Control For starting throttle, run and stop. 
Keeps the choke partially open 
during starting and switches off the 
ignition to stop the engine.
8 Throttle Trigger Lockout Must be depressed before the 
throttle trigger can be activated.
9 Bike Handle For easy control of the machine with 
both hands during cutting work.
10 Handle Support Connects the shaft and bike handle. 11 Carrying Ring
Connects the trimmer/brushcutter to 
the harness.
12 Throttle Cable Retainer Secures the throttle cable to the 
drive tube.
13 Choke Lever Eases engine starting by enriching 
mixture.
14 Air Filter Cover Covers and protects  the air filter 
element.
15 Fuel Filler Cap For closing the fuel tank.
16 Fuel Tank For fuel and oil mixture.
17 Machine Support For resting machine on the ground.
18 Loop Handle For easy control of machine during 
cutting work.
19 Barrier Bar Helps keep users feet and legs 
clear of the cutting attachment.
20 Drive Tube Encloses and protects the drive 
shaft between the engine and 
gearbox.
21 Stop Switch Switches the engines ignition off 
and stops the engine. 1
Mowing Head
2 Deflector for Mowing Heads
3 Line Limiting Blade
4 Deflector with Skirt for all Mowing 
Attachments
5 Skirt
6 Metal Mowing Tool
002BA114 KN
1
3
4 5
3
6 4
1 2 
						

							FS 55, FS 55 C, FS 55 R, FS 55 RCEnglish
41
Definitions
1 Mowing Head
The cutting attachment, i. e. 
mowing head, for different 
purposes.
2 Deflector for Mowing Heads
The deflector is designed to reduce 
the risk of injury from foreign objects 
flung backwards toward the 
operator by the cutting attachment 
and from contact with the cutting 
attachment.
3 Line Limiting blade
Metal blade at the deflector in order 
to keep the line of the mowing head 
at the proper length.
4 Deflector with Skirt for all Mowing 
Attachments
The deflector is designed to reduce 
the risk of injury from foreign objects 
flung backwards toward the 
operator by the cutting attachment 
and from contact with the cutting 
attachment. Is not designed to 
contain fragmented metal blades.
5Skirt
The skirt at the bottom of the 
deflector must be utilized as 
described in the chapter Mounting 
the Deflector.
6 Metal Mowing Tool
The cutting attachment, i. e. blade, 
made from metal for different 
purposes.
EPA / CEPA
The Emission Compliance Period 
referred to on the Emissions 
Compliance Label indicates the number 
of operating hours for which the engine 
has been shown to meet Federal 
emission requirements.
Category
CARB
The Emission Compliance Period used 
on the CARB-Air Index Label indicates 
the terms:
Engine
Single cylinder two-stroke engine
Ignition System
Electronic magneto ignition
Fuel System
All position diaphragm carburetor with 
integral fuel pump
Specifications
A = 300 hours
B = 125 hours
C = 50 hours
Extended = 300 hours
Intermediate = 125 hours
Moderate = 50 hoursDisplacement: 1.66 cu. in. 
(27.2 cm
3)
Bore: 1.34 in (34 mm)
Stroke: 1.18 in (30 mm)
Engine power to 
ISO 8893: 1 hp (0.75 kW)
Idle speed: 2,800 rpm
Max. engine speed 
(rated): 9,500 rpm
Max. output shaft 
speed (cutting 
attachment): 7,700 rpm
Spark plug (resistor 
type):Bosch WSR 6 F, 
NGK BPMR 7 A
Electrode gap: 0.02 in (0.5 mm)
Fuel tank capacity: 11.2 fl.oz (0.33 L) 
						

							FS 55, FS 55 C, FS 55 R, FS 55 RC English
42
Weight
Contact your STIHL dealer for 
information regarding special 
accessories that may be available for 
your product.Users of this unit should carry out only 
the maintenance operations described 
in this manual. Other repair work may be 
performed only by authorized STIHL 
service shops.
Warranty claims following repairs can be 
accepted only if the repair has been 
performed by an authorized STIHL 
servicing dealer using original STIHL 
replacement parts.
Original STIHL parts can be identified by 
the STIHL part number, the { 
logo and, in some cases, by the STIHL 
parts symbol K. The symbol may 
appear alone on small parts. dry, without cutting attachment and 
deflector
FS 55: 11.0 lbs 
(5.0 kg)
FS 55 R: 10.6 lbs 
(4.8 kg)
FS 55 C with Easy2Start: 11.2 lbs 
(5.1 kg)
FS 55 RC with Easy2Start: 10.8 lbs 
(4.9 kg)Special AccessoriesMaintenance and Repairs 
						

							FS 55, FS 55 C, FS 55 R, FS 55 RCEnglish
43
Not for California
Your Warranty Rights and 
Obligations
The U.S. Environmental Protection 
Agency (EPA) and STIHL Incorporated 
are pleased to explain the Emission 
Control System Warranty on your 
equipment type engine. In the U.S. new 
1997 and later model year small off-road 
equipment engines must be designed, 
built and equipped, at the time of sale, to 
meet the U.S. EPA regulations for small 
non road engines. The equipment 
engine must be free from defects in 
materials and workmanship which 
cause it to fail to conform with U.S. EPA 
standards for the first two years of 
engine use from the date of sale to the 
ultimate purchaser.
STIHL Incorporated must warrant the 
emission control system on your small 
off-road engine for the period of time 
listed below provided there has been no 
abuse, neglect or improper maintenance 
of your small off-road equipment engine.
Your emission control system includes 
parts such as the carburetor and the 
ignition system. Also included may be 
hoses, and connectors and other 
emission-related assemblies.
Where a warrantable condition exists, 
STIHL Incorporated will repair your 
small off-road equipment engine at no cost to you, including diagnosis (if the 
diagnostic work is performed at an 
authorized dealer), parts, and labor.
Manufacturers Warranty Coverage
In the U.S., 1997 and later model year 
small off-road equipment engines are 
warranted for two years. If any emission-
related part on your engine is defective, 
the part will be repaired or replaced by 
STIHL Incorporated free of charge.
Owners Warranty Responsibilities
As the small off-road equipment engine 
owner, you are responsible for the 
performance of the required 
maintenance listed in your instruction 
manual. STIHL Incorporated 
recommends that you retain all receipts 
covering maintenance on your small off-
road equipment engine, but STIHL 
Incorporated cannot deny warranty 
solely for the lack of receipts or for your 
failure to ensure the performance of all 
scheduled maintenance.
Any replacement part or service that is 
equivalent in performance and durability 
may be used in non-warranty 
maintenance or repairs, and shall not 
reduce the warranty obligations of the 
engine manufacturer.
As the small off-road equipment engine 
owner, you should be aware, however, 
that STIHL Incorporated may deny you 
warranty coverage if your small off-road 
equipment engine or a part has failed 
due to abuse, neglect, improper 
maintenance or unapproved 
modifications.
You are responsible for presenting your 
small off-road equipment engine to a 
STIHL service center as soon as a problem exists. The warranty repairs will 
be completed in a reasonable amount of 
time, not to exceed 30 days.
If you have any questions regarding your 
warranty rights and responsibilities, 
please contact a STIHL customer 
service representative at 1-800-467-
8445 or you can write to
STIHL Inc.,
536 Viking Drive, P.O. Box 2015,
Virginia Beach, VA 23450-2015
www.stihlusa.com
Coverage by STIHL Incorporated
STIHL Incorporated warrants to the 
ultimate purchaser and each 
subsequent purchaser that your small 
off-road equipment engine will be 
designed, built and equipped, at the time 
of sale, to meet all applicable 
regulations. STIHL Incorporated also 
warrants to the initial purchaser and 
each subsequent purchaser that your 
engine is free from defects in materials 
and workmanship which cause the 
engine to fail to conform with applicable 
regulations for a period of two years.
Warranty Period
The warranty period will begin on the 
date the utility equipment engine is 
purchased by the initial purchaser and 
you have signed and sent back the 
warranty card to STIHL.
If any emission-related part on your 
engine is defective, the part will be 
replaced by STIHL Incorporated at no 
cost to the owner. Any warranted part 
which is not scheduled for replacement 
as required maintenance, or which is 
scheduled only for regular inspection to 
STIHL Incorporated 
Federal Emission Control 
Warranty Statement 
						

							FS 55, FS 55 C, FS 55 R, FS 55 RC English
44 the effect of repair or replace as 
necessary will be warranted for the 
warranty period. Any warranted part 
which is scheduled for replacement as 
required maintenance will be warranted 
for the period of time up to the first 
scheduled replacement point for that 
part.
Diagnosis
You, as the owner, shall not be charged 
for diagnostic labor which leads to the 
determination that a warranted part is 
defective. However, if you claim 
warranty for a component and the 
machine is tested as non-defective, 
STIHL Incorporated will charge you for 
the cost of the emission test. Mechanical 
diagnostic work will be performed at an 
authorized STIHL servicing dealer. 
Emission test may be performed either 
at STIHL Incorporated or at any 
independent test laboratory.
Warranty Work
STIHL Incorporated shall remedy 
warranty defects at any authorized 
STIHL servicing dealer or warranty 
station. Any such work shall be free of 
charge to the owner if it is determined 
that a warranted part is defective.
Any manufacturer-approved or 
equivalent replacement part may be 
used for any warranty maintenance or 
repairs on emission-related parts and 
must be provided without charge to the 
owner. STIHL Incorporated is liable for 
damages to other engine components 
caused by the failure of a warranted part 
still under warranty.
The following list specifically defines the 
emission-related warranted parts:–Air Filter
–Carburetor
–Fuel Pump
–Choke (Cold Start Enrichment 
System)
–Control Linkages
–Intake Manifold
–Magneto or Electronic Ignition 
System (Ignition Module)
–Spark Plug
–Catalytic Converter (if applicable)
–Fuel Tank
–Fuel Cap
–Fuel Line
–Fuel Line Fittings
–Clamps
–Fasteners
Where to make a Claim for Warranty 
Service
Bring the product to any authorized 
STIHL servicing dealer and present the 
signed warranty card.
Maintenance Requirements
The maintenance instructions in this 
manual are based on the application of 
the recommended 2-stroke fuel-oil 
mixture (see also instruction Fuel). 
Deviations from this recommendation 
regarding quality and mixing ratio of fuel 
and oil may require shorter maintenance 
intervals.Limitations
This Emission Control Systems 
Warranty shall not cover any of the 
following:
Nrepair or replacement required 
because of misuse, neglect or lack 
of required maintenance,
Nrepairs improperly performed or 
replacements not conforming to 
STIHL Incorporated specifications 
that adversely affect performance 
and/or durability, and alterations or 
modifications not recommended or 
approved in writing by STIHL 
Incorporated,
and
Nreplacement of parts and other 
services and adjustments 
necessary for required maintenance 
at and after the first scheduled 
replacement point. 
						

							FS 55, FS 55 C, FS 55 R, FS 55 RCEnglish
45
For California only
Your Warranty Rights and 
Obligations
The California Air Resources Board 
(CARB) and STIHL Incorporated are 
pleased to explain the Emission Control 
System Warranty on your 2007 and later 
small off-road equipment engine.
In California, new equipment that uses 
small off-road engines must be 
designed, built, and equipped to meet 
the States stringent anti-smog 
standards. STIHL Incorporated must 
warrant the emissions control system on 
your small off-road engine for the period 
listed below provided there has been no 
abuse, neglect or improper maintenance 
of your small off-road engine.
Your emissions control system may 
include parts such as:
Air Filter, Carburetor, Fuel Pump, Choke 
(Cold Start Enrichment System), Control 
Linkages, Intake Manifold, Magneto or 
Electronic Ignition System (Ignition 
Module), Spark Plug, Catalytic 
Converter (if applicable), Fuel Tank, 
Fuel Cap, Fuel Line, Fuel Line Fittings, 
Clamps, Fasteners.Where a warrantable condition exists, 
STIHL Incorporated will repair your 
small off-road equipment engine at no 
cost to you including diagnosis, parts 
and labor.
Manufacturer’s Warranty 
Responsibilities
This emissions control system is 
warranted for two years in California. If 
any emissions-related part on your 
equipment is defective, the part will be 
repaired or replaced by STIHL 
Incorporated free of charge.
Owner’s Warranty Responsibilities
As the small off-road equipment engine 
owner, you are responsible for 
performance of the required 
maintenance listed in your instruction 
manual. STIHL Incorporated 
recommends that you retain all receipts 
covering maintenance on your small off-
road equipment engine, but STIHL 
Incorporated cannot deny warranty 
solely for the lack of receipts or your 
failure to ensure the performance of all 
scheduled maintenance.
As the small off-road equipment engine 
owner, you should however be aware 
that STIHL Incorporated may deny you 
warranty coverage if your small off-road 
equipment engine or a part has failed 
due to abuse, neglect, or improper 
maintenance or unapproved 
modifications.
You are responsible for presenting your 
small off-road equipment engine to a 
STIHL servicing dealer as soon as the 
problem exists. The warranty repairs 
should be completed in a reasonable 
amount of time, not to exceed 30 days. If you have any questions regarding your 
warranty rights and responsibilities, 
please contact a STIHL customer 
service representative at 1-800-467-
8445 or you can write to
STIHL Inc., 536 Viking Drive,
P.O. Box 2015,
Virginia Beach, VA 23450-2015.
Coverage by STIHL Incorporated
STIHL Incorporated warrants to the 
ultimate purchaser and each 
subsequent purchaser that your small 
off-road equipment engine is designed, 
built and equipped, at the time of sale, to 
meet all applicable emission 
regulations.
STIHL Incorporated also warrants to the 
initial purchaser and each subsequent 
purchaser that your engine is free from 
defects in materials and workmanship 
which cause the engine to fail to conform 
to applicable emission regulations for a 
period of two years.
Defects Warranty Period
The warranty periods will begin on the 
date the utility equipment engine is 
purchased by the initial purchaser. If any 
emission-related part on your engine is 
defective, the part will be replaced by 
STIHL Incorporated at no cost to the 
owner.
Add-on or modified parts that are not 
exempted by CARB may not be used. 
The use of any non exempted add-on or 
modified parts will be grounds for 
disallowing a warranty claim. STIHL 
Incorporated will not be liable to warrant 
failures of warranted parts caused by the 
use of a non exempted add-on or 
modified part.
STIHL Incorporated 
California Exhaust and 
Evaporative Emissions 
Control Warranty 
Statement 
						

							FS 55, FS 55 C, FS 55 R, FS 55 RC English
46 The warranty on emissions-related parts 
will be interpreted as follows:
1.Any warranted part that is not 
scheduled for replacement as 
required maintenance in the written 
instructions required in the 
Emission Warranty Parts List (see 
below) must be warranted for the 
warranty period defined in 
Subsection COVERAGE BY STIHL 
INCORPORATED, see above. If 
any such part fails during the period 
of warranty coverage, it must be 
repaired or replaced by the 
manufacturer according to 
Subsection (4) below. Any such part 
repaired or replaced under the 
warranty must be warranted for the 
remaining warranty period.
2.Any warranted part that is 
scheduled only for regular 
inspection in the written instructions 
required by the Emission Warranty 
Parts List (see below) must be 
warranted for the warranty period 
defined in Subsection COVERAGE 
BY STIHL INCORPORATED, see 
above. A statement in such written 
instructions to the effect of repair or 
replace as necessary will not 
reduce the period of warranty 
coverage. Any such part repaired or 
replaced under warranty must be 
warranted for the remaining 
warranty period.
3.Any warranted part that is 
scheduled for replacement as 
required maintenance in the written 
instructions required by the 
Emission Warranty Parts List (see 
below) must be warranted for the 
period of time prior to the first 
scheduled replacement point for that part. If the part fails prior to the 
first scheduled replacement, the 
part must be repaired or replaced by 
the engine manufacturer according 
to Subsection (4) below. Any such 
part repaired or replaced under 
warranty must be warranted for the 
remainder of the period prior to the 
first scheduled replacement point 
for the part.
4.Repair or replacement of any 
warranted part under the warranty 
must be performed at a warranty 
station at no charge to the owner.
5.Notwithstanding the provisions of 
Subsection (4) above, warranty 
services or repairs will be provided 
at all manufacturer distribution 
centers that are authorized to 
service the subject engines.
6.The owner must not be charged for 
diagnostic labor that leads to the 
determination that a warranted part 
is in fact defective, provided that 
such diagnostic work is performed 
at a warranty station.
Warranty Work
STIHL Incorporated shall remedy 
warranty defects at any authorized 
STIHL servicing dealer or warranty 
station. Any such work shall be free of 
charge to the owner if it is determined 
that a warranted part is defective. Any 
manufacturer approved or equivalent 
replacement part may be used for any 
warranty maintenance or repairs on 
emission-related parts and must be 
provided without charge to the owner. 
STIHL Incorporated is liable for damages to other engine components 
caused by the failure of a warranted part 
still under warranty.
Emission Warranty Parts List
Air Filter, Carburetor, Fuel Pump, Choke 
(Cold Start Enrichment System), Control 
Linkages, Intake Manifold, Magneto or 
Electronic Ignition System (Ignition 
Module), Spark Plug, Catalytic 
Converter (if applicable), Fuel Tank, 
Fuel Cap, Fuel Line, Fuel Line Fittings, 
Clamps, Fasteners
Where to make a Claim for Warranty 
Service
Bring the STIHL product to any 
authorized STIHL servicing dealer and 
present the signed STIHL product 
registration card, or the print-out of the 
electronic product registration.
Limitations
The repair or replacement of any 
warranted part otherwise eligible for 
warranty coverage may be excluded 
from such warranty coverage if STIHL 
Incorporated demonstrates that the 
STIHL product has been abused, 
neglected, or improperly maintained, 
and that such abuse, neglect, or 
improper maintenance was the direct 
cause of the need for repair or 
replacement of the part. That 
notwithstanding, any adjustment of a 
component that has a factory installed, 
and properly operating, adjustment 
limiting device is still eligible for warranty 
coverage. 
						

							FS 55, FS 55 C, FS 55 R, FS 55 RCEnglish
47
STIHL Registered Trademarks
STIHL
®
{
K
The color combination orange-grey 
(U.S. Registrations #2,821,860; 
#3,010,057, #3,010,058, #3,400,477; 
and #3,400,476)
4-MIX
®
AUTOCUT®
EASYSTART®
FARM BOSS®
iCademy®
OILOMATIC®
STIHL Cutquik®
STIHL DUROMATIC®
STIHL Quickstop®
STIHL ROLLOMATIC®
STIHL WOOD BOSS®
TIMBERSPORTS®
WOOD BOSS®
YARD BOSS®
Some of STIHL’s Common Law 
Trademarks
BioPlus™
Easy2Start™
EasySpool™
ElastoStart™
Ematic™
FixCut™
HT Plus™
IntelliCarb™
Master Control Lever™
Micro™
Pro Mark™
Quad Power™
Quiet Line™
STIHL Compact™
STIHL HomeScaper Series™
STIHL Interchangeable Attachment 
Series™
STIHL M-Tronic™
STIHL Magnum™
STIHL MiniBoss™
STIHL MotoPlus 4™
STIHL Multi-Cut HomeScaper Series™
STIHL OUTFITTERS™
STIHL PICCO™
STIHL PolyCut™
STIHL PowerSweep™STIHL Precision Series™
STIHL Protech™
STIHL RAPID™
STIHL SuperCut™
STIHL Territory™
TapAction™
TrimCut™
This listing of trademarks is subject to 
change.
Any unauthorized use of these 
trademarks without the express written 
consent of 
ANDREAS STIHL AG & Co. KG, 
Waiblingen is strictly prohibited.Trademarks 
						

							FS 55, FS 55 C, FS 55 R, FS 55 RC English
48