Special Accessories; Maintenance And Repairs - Stihl BT 121 Instruction Manual

English
This spark ignition system meets all
requrements of the Canadian
Interference-Causing Equipment
Regulations ICES-002.
Fuel System
All position diaphragm carburetor with
integral fuel pump
Fuel tank capacity:
Drilling Gear
Two-stage spur gear drive
Gear ratio: 47,5 : 1
Max. spindle speed: 190 rpm
Max. torque at drilling
spindle: 79 Nm
Lubrication: STIHL gear lubri-
cant for
brushcutters
Weight
Dry, without drilling
tool (auger): 9.4 kg
Dimensions
Length with handle
frame: 400 mm
Width with handle
frame: 530 mm
Height without drilling
tool (auger): 340 mm
24

Special Accessories

Earth augers
Diameter:
Length:
0.64 l
Planting auger
Diameter:
Length:
Planting hole auger
Diameter:
Length:
Other special accessories
Shaft extension:
Chuck for spiral drills: Diameters up to
Contact your STIHL dealer for more
information on these and other special
accessories.

Maintenance and Repairs

Users of this machine may only carry out
the maintenance and service work
described in this user manual. All other
repairs must be carried out by a
40, 60, 90, 120,
servicing dealer.
150, 200 mm
STIHL recommends that you have
695 mm
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer. STIHL dealers are
regularly given the opportunity to attend
training courses and are supplied with
150 mm
the necessary technical information.
525 mm
When repairing the machine, only use
replacement parts which have been
approved by STIHL for this power tool or
are technically identical. Only use high-
260 mm
quality replacement parts in order to
avoid the risk of accidents and damage
660 mm
to the machine.
STIHL recommends the use of original
STIHL replacement parts.
250, 450 mm Original STIHL parts can be identified by
the STIHL part number, the {
logo and the STIHL parts symbol K
13 mm
(the symbol may appear alone on small
parts).
BT 121