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TECHNICAL SPECIFICATIONS - ENGINE
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Engine
CR-85
Design
Liquid cooled single cylinder two-stroke engine with reed valve intake
Displacement
84.93 ccm
Bore/stroke
47 / 48.95 mm
Fuel
unleaded fuel with at least RON 95 (USA = Premium RON 91), mixed with high grade two-stroke oil
Oil/gasoline ratio
1 : 40 - 1 : 60 when using high grade two-stroke oil (e.g. Motorex 2T Crosspower),
when in doubt, please contact your importer
Lubrication
mixture lubrication
Crankshaft bearing
deep-groove ball bearing, cylinder roller bearing
Connecting rod bearing
needle bearing
Piston pin bearing
needle bearing
Piston rings
1 compression ring
Primary drive
straight cut spur gears, 19 : 66 t
Clutch
multiple disc clutch in oil bath, hydraulic operated (Motorex Kupplungs-Fluid 75)
Transmission
6 speed, claw actuated
Gear ratio
1
st
gear 11 : 29
2
nd
gear 14 : 28
3
rd
gear 16 : 26
4
th
gear 19 : 26
5
th
gear 21 : 25
6
th
gear 20 : 21
Transmission oil
0.35 liter engine oil Motorex Topspeed 4T 15W50
Ignition system
Moric Digital 2M1
Spark plug
NGK BR 10 ECMVX
Electrode gap
0.60 mm
Carburetor
flat-slide carburetor, carburetor see table
Coolant
1 liter, mixture 50% antifreeze, 50% water, at least –25° C (-13° F)
Air filter
wet foam type air filter insert
BASIC CARBURETOR SETTING
Carburetor
Keihin PWK 28
Main jet
118
Needle jet
2.6
Idling jet
45
Jet needle
N5HG
Needle position from top
III
Throttle valve
3.5
Starting jet
62
Air adjustment screw open
1,5