1 Technical data
1.01 Engine
Mode of operation Two-stroke
Process Loop scavenging
Piston stroke 58mm
Cylinder bore 56mm
No. Of cylinders and
Orientation 1 cylinder, standing, leaning 15º forward
Piston displacement 143ccm
Compression ratio 7.75:1:8.1
Room for compression 20,4ccm
Continous output at 4000rpm 6.5hp
Maximum output at 5100rpm 7.5hp
Max. torque at 3500rpm 1.15kgm
Coolant Forced air (axial load supercharger)
Lubrication 4%
Carburetor
Design Round slidegate valve carburetor
Type 24 KN 1-1
Passage 24mm
Main jet 90
Needle jet 67
Idle jet 40
Needle setting 3
slidegate valve-cut out4mm
Idle air screw 2,5 to 3 revolutions, open
Weight of float 10,6grams
Airfilter Baffle wet air filter with intake silencer
Ignition Battery Ignition
Spark plug Isolator M 14-240
Length of thread 10mm
Elektrodenabstand 0,6mm
Unterbrecherkontaktabstand 0,4mm
Vorzündung 4mm of OT (28% crankangle), fixed setting
Piston
Material Si 20
Piston rings 2 Compression rings
Oversizes for cylinder-diameter 56.25; 56.50; 56.75; 57.00mm
Crankshaft bearings
Amount 3
Type Ball bearings
Connecting rod bearings Doublerowed roller bearings, cageless, with friction disc
Dimension of rolls 5x5 in compliance to DIN 5402
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General