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STIHL single cylinder two-stroke engine
Displaceent: 61.5cm
3
(3.75cu.in)
Bore: 48 mm (1.89 in)
Stroke: 34 mm (1.34 in)
Idle speed: 2,800 rpm
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Type:
Electronic magneto ignition
(breakerless)
Spark plug (suppressed):
Bosch WSR 6 F, NGK BPMR 7 A or
Champion RCJ 6 Y
Electrode gap 0.5 mm (0.02 in)
Spark plug thread:
M 14x1.25; 9.5 mm (0.37 in) long
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Carburetor:
All position diaphragm carburetor
with integral fuel pump
Air filter:
Prefilter and bisectional box filter
Fuel tank
capacitiy: 0.625 L (1.32 US pt)
Fuel mixture:
see chapter "Fuel"
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Dry, without
bar and chain:
5.8 kg (13.2 lb)
Chain lubrication:
Fully automatic, speed-controlled
rotary oil pump. Additional manual oil
flow control
Oil tank capacity:
0.32 l (0.68 US pt)
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Recommended cutting attachments
for compliance with § 5.12 of ANSI
Standard B 175.1-1991
(see page 14 of this Manual):
STIHL reduced kickback bar
(with green label):
for 3/8" pitch:
Rollomatic with sprocket nose
40, 45 or 50 cm (16, 18 or 20 in)
STIHL low kickback chain*
(with green label):
9.32 mm (3/8") Rapid-Micro 2
(33 RM 2, 36 RM 2)
Chain sprocket:
7-tooth for 3/8" pitch spur sprocket
Since new bar/chain combinations may
be developed after publication of this
Manual, ask your STIHL dealer for the
latest STIHL recommendations.
Other bars and chains available for this
powerhead are:
STIHL yellow-labeled bars:
for 3/8" pitch:
Rollomatic "S" with sprocket nose
40, 45, 50, 63 cm (16, 18, 20, 24 in)
Duromatic with stellite tipped nose
40, 45, 50 or 63 cm (16, 18, 20 or 24 in)
STIHL yellow -labeled chains:
for 3/8" pitch:
Rapid-Micro (33 RM, 36 RM),
Rapid-Super (33 RS, 36 RS, 33 RSL,
Rapid-Duro 33 RD).
In order to comply with the kickback
performance requirements of § 5.12
of ANSI Standard B 175.1-1991,
do not use replacement saw chain
unless it has been designated as
meeting the ANSI § 5.12 requirements
on this specific powerhead, or has
been designated as "low kickback"
saw chain* in accordance with the
ANSI B 175.1-1991 standard.
*See definition of "low kickback chain"
on page 16 of this Manual.
46
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