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Model: 680

MANUFACTURED BY:
SHIN-DAIWA KOGYO LTD.
HIROSHIMA, JAPAN
SERIES OR ASSEMBLY NUMBER:
SERIAL NUMBER PREFIX:
YEAR INTRODUCED:
YEAR DISCONTINUED:
ENGINE DISPLACEMENT:
67.9 ccm (4.1 cu. in.)
NUMBER OF CYLINDERS:
1 with 2 ring silicon alloy piston
CYLINDER BORE:
49 mm
PISTON STROKE:
36 mm
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with beaded Chrome plated bore
INTAKE METHOD:
Piston Ported
MANUFACTURER ADVERTISED H.P.:
4.8 hp
WEIGHT:
5.8 kg (12.7 lbs.) powerhead only
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Anti-Vibration
CHAIN BRAKE:
Mechanical
CLUTCH:
Centrifugal with 3 metal shoes
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast Magnesium, injection molded Polymer
MAGNETO TYPE:
Fllywheel, CDI Electronic
CARBURETOR:
Walbro HDA-29A
MAJOR REPAIR KIT:
K25-HDA
MINOR REPAIR KIT:
D22-HDA replaces D10-HDA
AIR FILTER SYSTEM:
Stainless steel mesh element
STARTER TYPE:
Automatic rewind, cord is 4 mm X 95 cm
OIL PUMP:
Clutch driven adjustable piston pump, tank capacity 330 ml
(11.2 fl. oz.)
MAXIMUM ENGINE RPM:
12,000 free with bar and chain installed
IDLE RPM:
2,800
IGNITION TIMING:
Fixed 28 degrees BTDC
BREAKER POINT SETTING:
none
FLYWHEEL/COIL AIR GAP:
0.50 to 0.55 mm (0.020 to 0.022 in.)
SPARK PLUG TYPE:
Champion CJ6Y, NGK BPM7A
SPARK PLUG GAP:
0.6 mm (0.024 in.)
CRANKSHAFT MAIN BEARINGS:
Ball 6202
FUEL TANK CAPACITY:
700 ml (23.7 fl. oz.)
FUEL OIL RATIO:
50:1
RECOMMENDED FUEL OCTANE:
Automotive 89 octane. ASPEN2 pre-mixed Alkylate fuel
is best.
MIX OIL SPECIFICATION:
Shindaiwa premium. ASPEN synthetic oil is best
CHAIN PITCH:
3/8 in. optional .325 in.
CHAIN TYPE:
Oregon 77SL or 73LP
BAR MOUNT PATTERN:
09 link
SHORTEST GUIDE BAR SUPPLIED:
40 cm (16 in.)
LONGEST GUIDE BAR SUPPLIED:
71 cm )28 in.)
COLOUR SCHEME:
Shindaiwa RED
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:




 

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