Stihl Km 90 R Owners Manual

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STIHL KM 90 R
WARNING
Read Instruction Manual thoroughly 
before use and follow all safety 
precautions – improper use can 
cause serious or fatal injury.
ADVERTENCIA
Antes de usar la máquina lea y siga 
todas las precauciones de 
seguridad dadas en el manual de 
instrucciones – el uso incorrecto 
puede causar lesiones graves o 
mortales.
Instruction Manual
Manual de instrucciones 

Instruction Manual
1 - 30
Manual de instrucciones
31 - 63 

Original Instruction Manual Printed on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled. © ANDREAS STIHL AG & Co. KG, 2015
0458-465-8621-C. VA8.E15. 
0000000811_014_GB
KM 90 R
English
1
{This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process 
with electronic systems.
Contents
Allow only persons who fully understand 
the manuals of the KombiEngine and the 
KombiTool to operate this power tool...

KM 90 R
English
2 In the STIHL KombiSystem a number of 
different KombiEngines and KombiTools 
can be combined to produce a power 
tool. In this instruction manual the 
functional unit formed by the 
KombiEngine and KombiTool is referred 
to as the power tool.
Therefore, the separate instruction 
manuals for the KombiEngine and 
KombiTool should be used together for 
the power tool.
Always read and and make sure you 
understand both instruction manuals 
before using your power tool for the first 
time...

KM 90 R
English
3
Engineering Improvements
STIHL’s philosophy is to continually 
improve all of its products. As a result, 
engineering changes and improvements 
are made from time to time. Therefore, 
some changes, modifications and 
improvements may not be covered in 
this manual. If the operating 
characteristics or the appearance of 
your machine differs from those 
described in this manual, please contact 
your STIHL dealer or the STIHL 
distributor for your area for assistance.
Have your STIHL...

KM 90 R
English
4
THE OPERATOR
Physical Condition
You must be in good physical condition 
and mental health and not under the 
influence of any substance (drugs, 
alcohol, etc.) which might impair vision, 
dexterity or judgment. Do not operate 
this machine when you are fatigued.
WARNING
Be alert – if you get tired, take a break. 
Tiredness may result in loss of control. 
Working with any power tool can be 
strenuous. If you have any condition that 
might be aggravated by strenuous work, 
check with your...

KM 90 R
English
5
THE POWER TOOL
For illustrations and definitions of the 
power tool parts see the chapter on 
"Main Parts."
WARNING
Never modify this power tool in any way. 
Only attachments supplied by STIHL or 
expressly approved by STIHL for use 
with the specific STIHL KombiEngine 
model are authorized. Although certain 
unauthorized attachments are useable 
with STIHL power tools, their use may, 
in fact, be extremely dangerous.
If this tool is subjected to unusually high 
loads for which...

KM 90 R
English
6
WARNING
See also the "Fueling" chapter in your 
Instruction Manual for additional 
information.
Before Starting
WARNING
Always check your power tool for proper 
condition and operation before starting, 
particularly the throttle trigger, throttle 
trigger lockout, stop switch, cutting 
attachment, deflector and harness. The 
throttle trigger must move freely and 
always spring back to the idle position. 
Never attempt to modify the controls or 
safety devices.
WARNING
Check fuel...

KM 90 R
English
7 should not move. For directions on how 
to adjust idle speed, see the appropriate 
section of your instruction manual.
If you cannot set the correct idle speed, 
have your STIHL dealer check your 
power tool and make proper 
adjustments and repairs.
During Operation
Holding and Controlling the Power Tool
Always hold the unit firmly with both 
hands on the handles while you are 
working. Wrap your fingers and thumbs 
around the handles.
Your right hand should grip the rear 
handle. This...

KM 90 R
English
8 sitting on concrete, metal, bare ground 
or solid wood away from any 
combustible substances.
WARNING
An improperly mounted or damaged 
cylinder housing or a 
damaged/deformed muffler shell may 
interfere with the cooling process of the 
muffler. To reduce the risk of fire or burn 
injury, do not continue work with a 
damaged or improperly mounted 
cylinder housing or a 
damaged/deformed muffler shell.
Your muffler is furnished with a spark 
arresting screen designed to reduce the 
risk...