Stihl Km 55 R Manual

KM 55 R, KM 55 RCEnglish
19 NToo much oil in fuel mix.
NDirty air filter.
NUnfavorable running conditions, 
e.g. operating at part load.
Fit a new spark plug after approx. 100 
operating hours or earlier if the 
electrodes are badly eroded.
Installing the spark plug
NScrew home the spark plug, fit the 
boot and press it down firmly.If engine running behavior is 
unsatisfactory even though the air filter 
is clean and the carburetor is properly 
adjusted, the cause may be the muffler.
Have the muffler...

KM 55 R, KM 55 RC English
20 To help prolong the wear life of the 
starter rope, observe the following 
points:
NPull the starter rope only in the 
direction specified.
NDo not pull the rope over the edge of 
the guide bushing.
NDo not pull out the rope more than 
specified.
NDo not allow the starter grip to snap 
back, guide it back into the housing 
slowly – see chapter on Starting / 
Stopping the Engine.
Have a damaged starter rope replaced 
by your dealer before it breaks 
completely. STIHL...

KM 55 R, KM 55 RCEnglish
21
Maintenance and Care
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 finishing work or daily
after each refueling stop
weekly
monthly
every 12 months
if problem
if damaged
if required
Complete machineVisual inspection (condition, leaks)XX
CleanX
Control handle Check operationXX
Air...

KM 55 R, KM 55 RC English
221Fuel Pump
2Carburetor Adjusting Screws
3Spark Plug Boot
4Starter Grip
5Muffler
6Stop Switch
7Throttle Trigger
8Throttle Trigger Lockout
9Choke Lever
10Air Filter Cover
11Fuel Tank
12Fuel Filler Cap
13Machine Support
14Loop Handle
15Barrier Bar
16Drive Tube
17Coupling Sleeve
18Wing Screw
#Serial Number
Main Parts
129
8
7
461BA002 KN
14
6
1
5
4
2
3
1517
18
16
810
11
13# 

KM 55 R, KM 55 RCEnglish
23
Definitions
1. Fuel 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 exhaust noises and 
diverts exhaust gases away from 
operator. Spark arresting screen is 
designed to reduce the risk of fire.
6. Stop Switch
Switches...

KM 55 R, KM 55 RC English
24
Ignition System
Electronic magneto ignition
Fuel System
All position diaphragm carburetor with 
integral fuel pump
WeightContact 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...

KM 55 R, KM 55 RCEnglish
25
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...

KM 55 R, KM 55 RC English
26 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...

KM 55 R, KM 55 RCEnglish
27
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...

KM 55 R, KM 55 RC English
28 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...