Technical Specifications - Engine; Technical Data - KTM 640 LC4 Owner's Manual

Ktm owner's manual

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Owner's manual (60 pages)

Owner's manual (53 pages)

Owner's handbook manual (43 pages)

Table Of Contents

TECHNICAL DATA – ENGINE 640 LC4, 640 LC4 Supermoto 2004

Engine

Design

Displacement

Bore / Stroke

Ratio

Fuel

unleaded premium gasoline with at least RON 95 (USA = Premium RON 91) (RON 80-94 for other ignition curve

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

TEMPERATURE

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).

Liquid-cooled single cylinder 4-stroke engine with balancer shaft and electric starter

4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain

1 compression ring, 1 taper face ring, 1 oil scraper ring

straight geared spur wheels 31 : 79 teeth

multi disc clutch in oil bath, hydraulically operated

contactless DC-CDI ignition with digital advanced system type KOKUSAN 4K5

adjustment to max. 38° BTDC at 6000 rpm

liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump

1 liter, 40% antifreeze, 60% water, at least –25 ° C (–13 ° F)

10W/50

640 LC4

625 ccm

101 / 78 mm

11.7 : 1

249/1

Intake: 36 mm

Exhaust: 32 mm

0,15 mm Exhaust: 0,15 mm

2 cylinder roller bearing

needle bearing

bronze bushing

forged aluminium alloy

two Eaton-oilpumps

see bellow #

appr. 2,1 liters including frame

5-speed claw shifted

1st