Stihl Fs 45 C Manual

FS 45, FS 46
English
9 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, keeping the 
handles cradled between your thumb 
and forefinger. Keep your hands in this 
position to have your power tool under 
control at all times. Make sure your 
trimmer handles and grips are in good 
condition and free of moisture, pitch, oil, 
fuel mix or grease.
Working Conditions...

FS 45, FS 46
English
10 Operating Instructions
In the event of an emergency, shut off 
the engine immediately – move the slide 
control / stop switch to 0 or STOP.T o  r e d u c e  t h e  r i s k  o f  e y e  a n d  o t h e r  i n j u r y  
always wear proper eye protection (see 
the chapter on "Proper Clothing") and 
ensure that bystanders are at least 
50 feet (15 m) away. To reduce the risk 
of damage to property, also maintain this 
distance from such objects as vehicles 
or windows. Any...

FS 45, FS 46
English
11 Your muffler is furnished with a spark 
arresting screen designed to reduce the 
risk of fire from the emission of hot 
particles. Never operate your unit with a 
missing or damaged spark arresting 
screen. If your gas/oil mix ratio is correct (i.e., not too rich), this screen will 
normally stay clean as a result of the 
heat from the muffler and need no 
service or maintenance. If you 
experience loss of performance and you 
suspect a clogged screen, have your 
muffler...

FS 45, FS 46
English
12 Using the Mowing Heads
Do not use with mowing line longer than 
the intended length. With a properly 
mounted deflector, the built-in line-
limiting blade will automatically adjust 
the line to its proper length.
Using the unit with an overly long nylon 
cutting line increases the load on the 
engine and reduces its operating speed. 
This causes the clutch to slip 
continuously and results in overheating 
and damage to important components 
(e.g. clutch, polymer housing...

FS 45, FS 46
English
13 STIHL FixCut mowing head
Uses pre-cut lengths of nylon line.
Observe wear indicators.
Do not continue using the mowing head 
if the raised moldings (1) on the base 
are missing or worn – see right 
illustration above. The mowing head 
may otherwise shatter and flying objects 
could result in injury to the operator or 
bystanders. Install a new mowing head.
MAINTENANCE, REPAIR AND 
STORING
Maintenance, replacement, or repair of 
the emission control devices and 
systems may be...

FS 45, FS 46
English
14 Tighten all nuts, bolts and screws, 
except the carburetor adjustment 
screws, after each use.
Do not clean your machine with a 
pressure washer. The solid jet of water 
may damage parts of the machine.
Store the power tool in a dry and high or 
locked location out of reach of children.
Before storing for longer than a few 
days, always empty the fuel tank. See 
chapter "Storing the Machine" in the 
instruction manual.Warning!
Never repair damaged or broken heads. 
This...

FS 45, FS 46
English
15
Approved Combinations
Among other parts, the complete unit in 
includes:
–Cutting attachment
–Deflector
–Handle
–Shoulder strap (special accessory 
only)
Select correct combination from the 
table according to the cutting 
attachment you intend to use.
Cutting attachments
Mowing heads
1STIHL AutoCut C 5-2
2STIHL AutoCut 5-2
3STIHL PolyCut 6-3
4STIHL FixCut 5-2
Deflector
5Deflector with blade for mowing 
heads only (see "Mounting the 
Deflector").
Handle
6Loop handle...

FS 45, FS 46
English
16 NPlace the friction liner in the loop 
handle.NFit the loop handle (1) on the drive 
tube at distance (A) of about 20 cm 
(8 in.) from the control handle (2).
NSlide the spacer (3) – if supplied – 
into the loop handle as far as 
possible. 
NInsert the screw (4) through the loop 
handle and the spacer until the 
screw head locates in the loop 
handle's hexagon recess. 
NFit the washer (5). 
NFit the wingnut (6) and tighten it 
down firmly.
Adjusting loop handle to most...

FS 45, FS 46
English
17
Preparations
NLay your trimmer on its back with 
the loop handle and shroud pointing 
down and the output shaft facing up.
Thrust plate
The thrust plate is shipped with the 
PolyCut 6-3 and FixCut 5-2. It is only 
required for these mowing heads.
STIHL AutoCut 5-2 mowing head, 
STIHL AutoCut C 5-2 mowing head
NPull the thrust plate (1), if fitted, off 
the shaft (2).
STIHL PolyCut 6-3 mowing head, 
STIHL FixCut 5-2 mowing head
NSlip the thrust plate (1) over the 
shaft (2) and...

FS 45, FS 46
English
18 NSlip the mowing head (2) over the 
shaft (5) and engage hex recess (7) 
on the external hexagon (6).
NFit the cap (8) on the mowing head 
– screw it clockwise on to the shaft 
as far as stop and tighten it down 
firmly.STIHL AutoCut C 5-2
NSlip the mowing head (2) on to the 
shaft – as AutoCut 5-2.
NTurn the spool (9) clockwise until 
the two arrow heads line up – 
secure the spool in this position.
NInsert the cap (8) in the spool, press 
it down as far as stop and turn it...