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Model: 670 WEST COAST

MANUFACTURED BY:
JONSEREDS FABRIKERS AB
PARTILLE, SWEDEN
SERIES OR ASSEMBLY NUMBER:
YEAR INTRODUCED:
YEAR DISCONTINUED:
ENGINE DISPLACEMENT:
66.8cc (4.1 cu. in.)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
50mm (1.97 in.)
PISTON STROKE:
34mm (1.34 in.)
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with chrome plated bore
INTAKE METHOD:
Piston ported
MANUFACTURER ADVERTISED H.P.:
3.7
WEIGHT:
6.2 kg (13.6 lbs.), powerhead only
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Anti-vibration
CHAIN BRAKE:
Inertia activated
CLUTCH:
Centrifugal
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast magnesium, injection molded plastic
MAGNETO TYPE:
Electronic
CARBURETOR:
Tillotson HS-250A series
MAJOR REPAIR KIT:
RK-23HS
MINOR REPAIR KIT:
DG-5HS/T
AIR FILTER SYSTEM:
Nylon mesh cartridge
STARTER TYPE:
Electrolux automatic rewind
OIL PUMP:
Automatic, gear driven
MAXIMUM ENGINE RPM:
8,700
IDLE RPM:
IGNITION TIMING:
fixed
BREAKER POINT SETTING:
none
FLYWHEEL/COIL AIR GAP:
0.30 to 0.40 mm (0.012 to 0.016 in.)
SPARK PLUG TYPE:
Bosch WS7F
SPARK PLUG GAP:
0.50 mm (0.020 in.)
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
730 ml (24.7 fl. oz.)
FUEL OIL RATIO:
40:1
RECOMMENDED FUEL OCTANE:
Regular grade
MIX OIL SPECIFICATION:
Electrolux approved two-cycle mix oil
CHAIN PITCH:
3/8 in.
CHAIN TYPE:
BAR MOUNT PATTERN:
17 link
SHORTEST GUIDE BAR SUPPLIED:
38 cm (15 in.)
LONGEST GUIDE BAR SUPPLIED:
71 cm (28 in.)
COLOUR SCHEME:
Jonsered Red and Black
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:


Colour photographs courtesy Eric Olsen

 

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