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Specifications

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

A = 300 hours

B = 125 hours

C = 50 hours

CARB

The Emission Compliance Period used on the CARB-Air Index Label indicates the terms:

Extended = 300 hours

Intermediate = 125 hours

Moderate = 50 hours

Shortblock

STIHL single cylinder two-stroke engine

Displacement:

7.42 cu. in.

 

(121.6 cm3)

Bore:

2.36 in. (60 mm)

Stroke:

1.69 in. (43 mm)

Engine power to

8.58 hp (6.4 kW) at

ISO 7293:

8,500 rpm

Idle speed:

2,700 rpm

Maximum permis-

 

sible speed with

 

bar and chain:

11,500 rpm

Ignition system

 

Electronic magneto ignition

Spark plug

NGK BPMR 7 A,

(suppressed):

BOSCH WSR 6 F

Electrode gap:

0.02 in. (0.5 mm)

Fuel system

All position diaphragm carburetor with integral fuel pump

Fuel tank capacity: 44.0 oz (1.3 l)

Fuel mixture:

See "Fuel mix"

Chain lubrication

Fully automatic, speed-controlled oil pump with reciprocating piston – additional manual oil flow control

Oil tank capacity: 23.7 oz (0.7 l)

Weight

dry, without bar and

 

chain:

21.6 lbs. (9.8 kg)

Cutting attachment

Recommended cutting attachments in compliance with Sec. 5.11 of ANSI standard B 175.1-2000

Observe the information about ANSI standard B 175.1-2000 as well as the definition "low-kickback saw chain" in the section "Safety Instructions".

In order to comply with the kickback performance requirements of Sec. 5.11 of ANSI standard B 175.1-2000, do not use replacement saw chains unless they have been designated as meeting the ANSI Sec. 5.11 requirements on this specific powerhead, or have been designated as "low kickback" saw chains in accordance with the ANSI B 175.1-2000 standard.

Since new bar/chain combinations may be developed after publication of this Manual, ask your STIHL dealer for the latest STIHL recommendations.

Rollomatic "S" guide bars

STIHL reduced kickback bar (with green label) for 3/8" pitch

Bar lengths: 21 in. (53 cm)

Groove width: 0.063 in. (1.6 mm)

STIHL reduced kickback saw chain (with yellow label) for 0.404" pitch

Bar

21, 25, 30, 33, 36, 41 in.

lengths:

(53, 63, 75, 84, 90, 105 cm)

Groove

 

width:

0.063 in. (1.6 mm)

52

MS 880