TECHNICAL DATA - ENGINE
186
Design
1-cylinder 4-stroke engine, water-cooled
Displacement
654 cm³ (39.91 cu in)
Stroke
80 mm (3.15 in)
Bore
102 mm (4.02 in)
Compression ratio
11.8:1
Control
OHC, 4 valves controlled via rocker arm, chain drive
Valve diameter, intake
40 mm (1.57 in)
Valve diameter, exhaust
34 mm (1.34 in)
Valve play, cold
0.07… 0.13 mm (0.0028… 0.0051 in)
Crankshaft bearing
2 roller bearings
Conrod bearing
Needle bearing
Piston pin bearing
Bronze bush
Pistons
Forged light alloy
Piston rings
1 L-ring, 1 tapered compression piston ring, 1 oil scraper ring
Engine lubrication
Semi-dry sump lubrication with two rotor pumps
Primary transmission
36:79
Clutch
APTC™
Antihopping clutch in oil bath / hydraulically operated
Gearbox
6-gears, claw-shifted
Transmission ratio
1st gear
14:35
2nd gear
16:28
3rd gear
21:28
4th gear
21:23
5th gear
23:22
6th gear
23:20
Mixture preparation
Electronic fuel injection
Ignition
Contactless controlled fully electronic ignition with digital igni-
tion adjustment
Alternator
12 V, 224 W
Spark plug
NGK LKAR 8AI - 9
Spark plug electrode gap
0.9 mm (0.035 in)
Cooling
Water cooling, permanent circulation of coolant by water pump
Idle speed
Coolant temperature:
≥
70 °C (
≥
158 °F)
1,550… 1,650 rpm
Starting aid
Electric starter, automatic decompressor
26.1
Capacity - engine oil
Engine oil
1.70 l (1.8 qt.)
Engine oil (SAE 10W/60) (00062010035) (
Alternative engine oil
Engine oil (SAE 10W/50)
26.2
Capacity - coolant
Coolant
1.20 l (1.27 qt.)
Coolant (
Coolant (mixed ready to use) (
Summary of Contents for 690 Enduro AUS 2010
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