STIHL BLK57 and STIHL BLK 58.

BLK 57


MANUFACTURED BY: STIHL ANDREAS MASCHINENFABRIK STUTTGART, GERMANY SERIES OR ASSEMBLY NUMBER: YEAR INTRODUCED: 1954 YEAR DISCONTINUED: 1973 ENGINE DISPLACEMENT: 98 ccm (6.0 cu. in.) NUMBER OF CYLINDERS: 1 CYLINDER BORE: 54 mm (2.16 in.) PISTON STROKE: 46 mm (1.8 in) CYLINDER TYPE: Aluminum with chrome plated bore INTAKE METHOD: Reed valve MANUFACTURER ADVERTISED H.P.: 3.5 WEIGHT : 11 kg (24.2 lbs.) OPERATOR CONFIGURATION: One Man operation HANDLEBAR SYSTEM: Rigid CHAIN BRAKE: none CLUTCH: Centrifugal DRIVE TYPE: Bevel gear transmission CONSTRUCTION: Die cast magnesium MAGNETO TYPE: Bosch MZ/UP 1/115/2 CARBURETOR: MAJOR REPAIR KIT: MINOR REPAIR KIT: AIR FILTER SYSTEM: STARTER TYPE: Automatic rewind OIL PUMP: Automatic, worm gear driven OPERATING RPM: 5,500 IGNITION TIMING: 3.0 mm before TDC BREAKER POINT SETTING: 0.4 mm (0.016 in.) FLYWHEEL/COIL AIR GAP: Positon is fixed SPARK PLUG TYPE: Bosch W 225 T 7 SPARK PLUG GAP: 0.51 mm (0.020 in.) CRANKSHAFT MAIN BEARINGS: 4 ball type FUEL TANK CAPACITY: FUEL OIL RATIO: 25:1 for first 100 hours, 30:1 thereafter RECOMMENDED FUEL OCTANE: Regular grade MIX OIL SPECIFICATION: Castrol 2-stroke SAE 40 CHAIN PITCH: 1/2 in. CHAIN TYPE: Stihl BAR MOUNT PATTERN: SHORTEST GUIDE BAR SUPPLIED: 30 cm (12 in.) LONGEST GUIDE BAR SUPPLIED: 61 cm (24 in.)

STIHL BLK 58


MANUFACTURED BY:STIHL ANDREAS MASCHINENFABRIK,STUTTGART, GERMANY
YEAR INTRODUCED:1956
YEAR DISCONTINUED:1965
ENGINE DISPLACEMENT:105 ccm
NUMBER OF CYLINDERS:1
CYLINDER TYPE:Aluminum with chrome plated bore
INTAKE METHOD:Reed valves
MANUFACTURER ADVERTISED H.P.:4.5PS
WEIGHT :11 kg (24.2 lbs.)
OPERATOR CONFIGURATION:One Man operation
HANDLEBAR SYSTEM:Rigid
CHAIN BRAKE:none
CLUTCH:Centrifugal
DRIVE TYPE:Bevel gear transmission
CONSTRUCTION:Die cast magnesium
MAGNETO TYPE:Bosch
CARBURETOR:Tillotson
STARTER TYPE:Automatic rewind
OIL PUMP:Automtaic, worm gear driven
OPERATING RPM:5,500 produced chain speed of 11m/sec
BREAKER POINT SETTING:0.4 mm (0.016 in.)
FLYWHEEL/COIL AIR GAP:Position is fixed
SPARK PLUG TYPE:Bosch W 225 T 7
SPARK PLUG GAP:0.51 mm (0.020 in.)
CRANKSHAFT MAIN BEARINGS:4 ball type
FUEL OIL RATIO:25:1 for first 100 hours, 30:1 thereafter
RECOMMENDED FUEL OCTANE:Regular grade
MIX OIL SPECIFICATION:Castrol 2-stroke SAE 40
CHAIN PITCH:1/2 in.
CHAIN TYPE:Chipper
SHORTEST GUIDE BAR SUPPLIED:30 cm (12 in.)
LONGEST GUIDE BAR SUPPLIED:61 cm (24 in.)
COLOUR SCHEME:Red enamel