Table of Contents
Advertisement
TECHNICAL SPECIFICATIONS – ENGINE
ENGINE
Design
Displacement
Bore / Stroke
Ratio
Fuel
Valve timing
Camshaft
Valve diameter
Valve clearence cold
Crank shaft bearing
Connecting rod bearing
Top end bearing
Piston
Piston rings
Engine lubrication
Engine oil
Engine oil quantity
Primary ratio
Clutch
Transmission
Gear ratio
Ignition system
Ignition timing
Generator
Spark plug
Spark plug gap
Cooling system
Cooling liquid
Starting equipment
#
JASO T903 MA
TEMPERATUR
0°C
32°F
5W/40
Engine oil
Only use fully synthetic engine oils that meet the JASO
MA quality requirements (see information on the can).
KTM recommends Motorex Power Synt 4T in the 10W/50
viscosity (for temperatures over 0°C, 32°F) or 5W/40
(for temperatures under 0°C, 32°F).
660 SMC
Liquid-cooled single cylinder 4-stroke engine with balancer shaft
654 ccm
102 / 80 mm
11,7 : 1
unleaded premium gasoline with a least RON 95 (USA = Premium RON 91)
4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
586V39
Intake: 36 mm
Exhaust: 32 mm
0,12 - 0,15 mm
2 cylinder roller bearing
needle bearing
bronze bushing
forged aluminium alloy
1 compression ring, 1 taper face ring, 1 oil scraper ring
two Eaton-oilpumps
see table #
appr. 2.1 liters including frame (0.55 US gallons)
straight geared spur wheels 31 : 79 teeth
multi disc clutch in oil bath
5-speed claw shifted
1st gear 14:35
2nd gear 15:24
3rd gear 18:21
4th gear 20:19
5th gear 22:18
contactless DC-CDI ignition with digital advanced system type KOKUSAN
adjustment to max. 34 ° BTDC at 6000 rpm
12V 110/40W
NGK DCPR 8 E
0,9 mm
liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump
at least –25°C (–13°F)
kickstarter
BASIC CARBURATOR SETTING
Type
Carburator-setting number
Main jet
Jet needle
Idling jet
Main air jet
10W/50
Idling air jet
Needle position
Starting jet
Mixture control screw open
Slide
Performance restrictor
Stop pump membrane
Hot start device
»
660 SMC
Keihin FCR-MX 41
4138A
165
OBDVT (OBEKR)
42 (45)
200
100
5th from top (4th from top)
85
2
15
Slide stop (–)
858 / 2,15 mm
3,8 mm
45
Advertisement
Table of Contents
