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Model: DA-211

MANUFACTURED BY:
DISSTON HENRY & SONS INC.
PHILADELPHIA, PENNSYLVANIA, U.S.A.
SERIES OR ASSEMBLY NUMBER:
YEAR INTRODUCED:
1951
YEAR DISCONTINUED:
1953
ENGINE DISPLACEMENT:
10.99 cu. in. (180cc)
NUMBER OF CYLINDERS:
2 (horizontal)
CYLINDER BORE:
2.00 in. (50.8mm)
PISTON STROKE:
1.750 in. (44.4mm)
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with cast iron liner
INTAKE METHOD:
Reed valves
MANUFACTURER ADVERTISED H.P.:
9
WEIGHT:
55 lbs. (24.9 kg.) powerhead only
OPERATOR CONFIGURATION:
One or Two Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal
DRIVE TYPE:
Bevel gear transmission
CONSTRUCTION:
Die cast magnesium
MAGNETO TYPE:
Bendix Scintilla
CARBURETOR:
Tillotson AJ float type
MAJOR REPAIR KIT:
nla
MINOR REPAIR KIT:
nla
AIR FILTER SYSTEM:
Skinner ribbon element
STARTER TYPE:
Mercuty automatic rewind
OIL PUMP:
Automatic positive pressure piston pump
MAXIMUM ENGINE RPM:
IDLE RPM:
IGNITION TIMING:
26 degrees before TDC, (.111 in.)
BREAKER POINT SETTING:
.015 in. (0.38mm)
FLYWHEEL/COIL AIR GAP:
position is fixed
SPARK PLUG TYPE:
Champion J-6-J
SPARK PLUG GAP:
.025 in. (0.63mm)
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
96 oz. (2839cc)
FUEL OIL RATIO:
8 oz. to 1 gallon U.S.
RECOMMENDED FUEL OCTANE:
72
MIX OIL SPECIFICATION:
SAE 30 of Pennsylvania crude base stock
CHAIN PITCH:
9/16 in. .5625 in. (14.2mm)
CHAIN TYPE:
Disston Scratcher, Chisel or Chipper
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
24 in. (60.9cm)
LONGEST GUIDE BAR SUPPLIED:
84 in. (213cm)
COLOUR SCHEME:
Unpainted aluminum body with orange enamel spark plug cover, air filter cover and bar clamp.
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:
Undoubtedly the finest Chain Saw engine ever manufactured. These saws would work day after day with little or no trouble. Quiet, powerful and virtually no vibration due to the twin cylinder design.


Top photo by L. Trudel of saw in SON Ranch Logging Museum collection, restored by Lowell Boyd
(above)Brian Herlihy making a nice clean cut in dry fir.

(above) starting the cut

(above) nicely into the cut

(above) That is Art Williams having a look at the finished cut.

 

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