Main Parts; Specifications - Stihl BT 131 Instruction Manual

English
The following intervals apply for normal operating
conditions. The specified intervals must be short‐
ened accordingly when working for longer than nor‐
mal or under difficult cutting conditions (extensive
dust, etc.).
1)
STIHL recommends STIHL dealers
2)
Only if there is a noticeable loss of engine power

19 Main Parts

1
2
8
7
9
10
1 Stop switch
2 Throttle trigger lockout
3 Starter grip
4 Filter cover
5 Carburetor adjusting screw
6 Tank cap
7 Screw plug
8 Muffler with spark arresting screen
9 Drilling spindle
10 Hip padding
1)
Spark arresting screen not fitted on all markets
18
3
6
4
5
#
15
14
13
12
11
1)
11 Choke knob
12 Manual fuel pump
13 Spark plug cover
14 Throttle trigger
15 Auger brake lever
# Serial Number

20 Specifications

20.1 Engine
STIHL single cylinder four-stroke engine with
mixture lubrication
Displacement:
Cylinder bore:
Piston stroke:
Engine power to ISO 8893: 1.4 kW (1.9 hp) at
Idle speed:
Cut-off speed:
Valve clearance
Inlet valve:
Exhaust valve:
20.2 Ignition system
Electronic magneto ignition
Spark plug (suppressed): NGK CMR 6H,
Electrode gap:
20.3 Fuel system
All-position diaphragm carburetor with integral
fuel pump
Fuel tank capacity:
19 Main Parts
3
36.3cm
43 mm
25 mm
8500 1/min
2800 rpm
9500 rpm
0.10 mm
0.10 mm
BOSCH USR 4AC
0.5 mm
3
710 cm (0.71 l)
0458-529-8321-B