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Model: Rocket K3

MANUFACTURED BY:
PM (Power Machinery Ltd.)
VANCOUVER, BRITISH COLUMBIA, CANADA
SERIES OR ASSEMBLY NUMBER:
K3 serial number range K3-7500 to K3-8000
K3 revised serial number range K3-8001 and up
SERIAL NUMBER PREFIX:
YEAR INTRODUCED:
1953
YEAR DISCONTINUED:
1954
ENGINE DISPLACEMENT:
5.5 cu. in. (90 ccm)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
2.0 in. (50.8 mm)
PISTON STROKE:
1.750 in. (44.4 mm)
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with chrome plated bore
INTAKE METHOD:
Reed valves
MANUFACTURER ADVERTISED H.P.:
5 @ 4,500 rpm
WEIGHT:
24.5 lbs. (11.1kg) powerhead only
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal
DRIVE TYPE:
Gilmer belt reduction, 3:1 ratio
CONSTRUCTION:
Sand cast magnesium
MAGNETO TYPE:
Wico FW2146
CARBURETOR:
Tillotson HP-11A diaphragm type
MAJOR REPAIR KIT:
nla
MINOR REPAIR KIT:
nla
AIR FILTER SYSTEM:
"Chore girl" shredded metal element
STARTER TYPE:
Schnacke Automatic rewind type, revised as of serial number K3-8573 to use "standard" design with nylon cord
OIL PUMP:
Automatic with manual override. Guide bars now designed to feed oil to bar groove through oil holes
MAXIMUM ENGINE RPM:
4,000
IDLE RPM:
IGNITION TIMING:
fixed
BREAKER POINT SETTING:
0.018 to 0.020 in. (0.45 to 0.50 mm) WICO X-7544
FLYWHEEL/COIL AIR GAP:
fixed, not adjustable
SPARK PLUG TYPE:
Champion J-8
SPARK PLUG GAP:
0.025 in. (0.63 mm)
CRANKSHAFT MAIN BEARINGS:
Ball on clutch end, caged needle roller on flywheel end
FUEL TANK CAPACITY:
FUEL OIL RATIO:
1 pint to 1 gallon Imperial measure
RECOMMENDED FUEL OCTANE:
Regular
MIX OIL SPECIFICATION:
SAE 50
CHAIN PITCH:
9/16 in.
CHAIN TYPE:
PM Chipper
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
18 in. (45cm) all bars use sprocket 16752 (6T)
LONGEST GUIDE BAR SUPPLIED:
36 in. (91cm)
COLOUR SCHEME:
Red wrinkle finish enamel
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:
Sprocket and sprocket shaft revised ( 1/2") to use heavier Sprocket Key. Guide bars now "Stellite tipped with hardened rails. As of sn k3-8655 neoprene tubing replaces copper fuel lines. Belt housing design changed to accommodate new style guide bars.


Colour photographs courtesy Regis Turcotte
 

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