I'd guess those 15.5 # 1010 saws were weighed with the bar and chain as many were on Acres site. Steve
From Acres site and Just like every other site, it say "Powerhead Only".
Model: Pro-Mac 10-10
________________________________________
MANUFACTURED BY:
McCULLOCH MOTORS CORP.
LOS ANGELES, CALIFORNIA, U.S.A.
SERIES OR ASSEMBLY NUMBER:
600014, codes A,B,C,E,F,G,K,U serial prefix 11, 12
YEAR INTRODUCED:
1977
YEAR DISCONTINUED:
1982
ENGINE DISPLACEMENT:
3.3 cu. in. (54 cc)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
1.750 in.
PISTON STROKE:
1.375 in.
CYLINDER TYPE:
Aluminum with cast iron sleeve
INTAKE METHOD:
Piston ported
MANUFACTURER ADVERTISED H.P.:
not advertised
WEIGHT :
15.6 lbs. (7.1 kg) powerhead onlyOPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
Optional
CLUTCH:
Centrifugal
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast magnesium
MAGNETO TYPE:
McCulloch flywheel breaker point system. Electronic ignition on units with serial prefix 12
CARBURETOR:
Walbro SDC type
MAJOR REPAIR KIT:
K10-SDC
MINOR REPAIR KIT:
D10-SDC
AIR FILTER SYSTEM:
Flocked wire screen
STARTER TYPE:
McCulloch automatic rewind on left side
OIL PUMP:
Automatic with manual override
OPERATING RPM:
IGNITION TIMING:
26 degrees before TDC
BREAKER POINT SETTING:
0.019 in. (0.48 mm)
FLYWHEEL/COIL AIR GAP:
0.011 to 0.015 in. (0.3 to 0.4 mm)
SPARK PLUG TYPE:
AC CS45T or AC CS42T
SPARK PLUG GAP:
0.025 in. (0.63 mm)
CRANKSHAFT MAIN BEARINGS:
Ball and caged needle roller
FUEL TANK CAPACITY:
1.5 U.S. Pints (710 ml)
FUEL OIL RATIO:
20:1
RECOMMENDED FUEL OCTANE:
Regular
MIX OIL SPECIFICATION:
McCulloch two-cycle chain saw mix oil
CHAIN PITCH:
3/8 in.
CHAIN TYPE:
McCulloch
BAR MOUNT PATTERN:
11 link
SHORTEST GUIDE BAR SUPPLIED:
16 in. (40 cm)
LONGEST GUIDE BAR SUPPLIED:
28 in. (71 cm)
COLOUR SCHEME:
McCulloch Yellow enamel with Black Starter housing