MANUFACTURED BY: |  | SHIN-DAIWA KOGYO LTD. |
 | | HIROSHIMA, JAPAN |
SERIES OR ASSEMBLY NUMBER: | | |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | 1957 or earlier |
YEAR DISCONTINUED: | | |
ENGINE DISPLACEMENT: | | 4.1 cu. in. (67.9ccm) |
NUMBER OF CYLINDERS: | | 1 with 2 ring silicon alloy piston |
CYLINDER BORE: | | 49 mm (1.92 in.) |
PISTON STROKE: | | 36 mm (1.42 in.) |
PISTON RING THICKNESS: | | |
CYLINDER TYPE: | | Aluminum with beaded Chrome plated bore |
INTAKE METHOD: | | Piston ported |
MANUFACTURER ADVERTISED H.P.: | | 4.8 |
WEIGHT: | | 6.0 kg. (13.2 lbs.) powerhead only |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Anti-Vibration, available with 1/2 wrap or full wrap handlebars |
CHAIN BRAKE: | | Mechanical |
CLUTCH: | | Centrifugal, metal 3 shoe |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Die cast Magnesium |
MAGNETO TYPE: | | Flywheel type CDI electroinc - rev limited coil |
CARBURETOR: | | Walbro HDA-29 |
MAJOR REPAIR KIT: | | K25-HDA replaces K22-HDA |
MINOR REPAIR KIT: | | D22-HDA replaces D10-HDA |
AIR FILTER SYSTEM: | | 2-stage - outer coarse wire mesh, inner
silk screen or flocked |
STARTER TYPE: | | Automatic rewind. Cord is 4 mm X 95 cm |
OIL PUMP: | | Clutch driven automatic, piston pump, adjustable |
MAXIMUM ENGINE RPM: | | 12,500 free, with bar and chain installed |
IDLE RPM: | | 2,800 |
IGNITION TIMING: | | 28 degrees BTDC |
BREAKER POINT SETTING: | | none |
FLYWHEEL/COIL AIR GAP: | | .050 to 0.55 mm (0.020 to 0.22 in.) |
SPARK PLUG TYPE: | | Champion CJ6Y, NGK BPM7A |
SPARK PLUG GAP: | | 0.6 mm (0.025 in.) |
CRANKSHAFT MAIN BEARINGS: | | 2 of 6202 ball type |
FUEL TANK CAPACITY: | | 700 ml (23.7 fl. oz.) |
FUEL OIL RATIO: | | 40:1 |
RECOMMENDED FUEL OCTANE: | | Unleaded, minimum octane 89, ASPEN2 pre mixed Alkylate fuel is best |
MIX OIL SPECIFICATION: | | Shindaiwa chain saw mix oil. ASPEN synthetic oil is best |
CHAIN PITCH: | | 3/8 in. |
CHAIN TYPE: | | Oregon 72LG |
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: | | |