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Model: AH520 powerhead

MANUFACTURED BY:
TECUMSEH POWER PRODUCTS
GRAFTON WI. U.S.A.
SERIES OR ASSEMBLY NUMBER:
AH520 powerhead
YEAR INTRODUCED:
YEAR DISCONTINUED:
ENGINE DISPLACEMENT:
5.16 cu. in. (84.5 cc)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
2.09 in. (53 mm)
PISTON STROKE:
1.50 in. (38 mm)
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with chrome plated bore
INTAKE METHOD:
Reed valves
MANUFACTURER ADVERTISED H.P.:
WEIGHT:
OPERATOR CONFIGURATION:
HANDLEBAR SYSTEM:
CHAIN BRAKE:
CLUTCH:
DRIVE TYPE:
CONSTRUCTION:
Aluminum
MAGNETO TYPE:
Tecumseh flywheel type
CARBURETOR:
usually Tillotson diaphragm type, otherwise Tecumseh type
MAJOR REPAIR KIT:
MINOR REPAIR KIT:
AIR FILTER SYSTEM:
STARTER TYPE:
Tecumseh automatic rewind
OIL PUMP:
MAXIMUM ENGINE RPM:
IDLE RPM:
IGNITION TIMING:
0.185 in. (4.6 mm) BTDC
BREAKER POINT SETTING:
0.015 in.
FLYWHEEL/COIL AIR GAP:
position is fixed
SPARK PLUG TYPE:
Champion J8J
SPARK PLUG GAP:
0.035 in.
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
FUEL OIL RATIO:
3/4 pint to 1 U.S. gallon
RECOMMENDED FUEL OCTANE:
Regular grade
MIX OIL SPECIFICATION:
SAE 30 two-cycle mix oil
CHAIN PITCH:
CHAIN TYPE:
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
LONGEST GUIDE BAR SUPPLIED:
COLOUR SCHEME:
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:
Unit block series, supplied OEM to various chain saw manufacturers during 1960's



 

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