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Model: 75

MANUFACTURED BY:
JONSEREDS FABRIKERS AB
PARTILLE, SWEDEN
SERIES OR ASSEMBLY NUMBER:
XM 75
YEAR INTRODUCED:
1967
YEAR DISCONTINUED:
1968
ENGINE DISPLACEMENT:
75cc
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
50mm
PISTON STROKE:
38mm
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with chrome plated bore
INTAKE METHOD:
Piston ported
MANUFACTURER ADVERTISED H.P.:
2.9kW @ 7000 rpm
WEIGHT:
6.54kg
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast magnesium
MAGNETO TYPE:
Pagani
CARBURETOR:
Tillotson HS-21D series
MAJOR REPAIR KIT:
RK-23HS
MINOR REPAIR KIT:
DG-5HS/T
AIR FILTER SYSTEM:
Nylon mesh screen cylinder
STARTER TYPE:
Jonsered automatic rewind
OIL PUMP:
Automatic, worm gear driven
MAXIMUM ENGINE RPM:
9,400
IDLE RPM:
IGNITION TIMING:
2.5mm before TDC
BREAKER POINT SETTING:
0.30 to 0.40mm
FLYWHEEL/COIL AIR GAP:
0.3 mm (0.012 in.)
SPARK PLUG TYPE:
Champion CJ7Y
SPARK PLUG GAP:
0.5mm to 0.6mm (0.020 to 0.024 in.)
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
1.1litres
FUEL OIL RATIO:
25:1
RECOMMENDED FUEL OCTANE:
Regular
MIX OIL SPECIFICATION:
Two-cycle chain saw mix oil
CHAIN PITCH:
3/8 in. or .404 in.
CHAIN TYPE:
Chipper
BAR MOUNT PATTERN:
18 link
SHORTEST GUIDE BAR SUPPLIED:
38 cm (15 in.)
LONGEST GUIDE BAR SUPPLIED:
60 cm (24 in.)
COLOUR SCHEME:
Red and Silver Enamel
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:

Photographs courtesy George Blake collection
 

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