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10-45D Repair manual KTM LC4 Art.-Nr . 3.206.006 -E Engine 400 SXC Design Liquid-cooled single cylinder 4-stroke engine Displacement 398 ccm Bore / Stroke 89 / 64 mm Ratio 10,8 : 1 Fuel unleaded premium gasoline with a least RON 95 Valve timing 4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain Camshaft 249/1 Valve timing by 1 mm IO 22° BTDC EO 60° BBDC valve clearence IC 42° ABDC EC 4° ATDC Valve diameter Intake: 36 mm Exhaust: 30 mm Valve clearence cold Intake: 0,20 mm Exhaust: 0,20 mm Crank shaft bearing 2 cylinder roller bearing Connecting rod bearing needle bearing Top end bearing bronze bushing Piston cast aluminium alloy Piston rings 1 compression ring, 1 taper face ring, 1 oil scraper ring Engine lubrication forced-feed lubrication through Eaton-Oilpump with oil sump Engine oil see bellow Engine oil quantity 1,45 liters (0,38 US gallons) Primary ratio straight geared spur wheels 30 : 81 teeth Clutch multi disc clutch in oil bath Transmission 5-speed claw shifted Gear ratio 1st 14:35 2nd 15:24 3rd 18:21 4th 20:19 5th 22:18 Ignition system contactless thyristor ignition with electronic advanced system type SEM Ignition timing adjustment to max. 38 ° BTDC at 6000 rpm Generator 12V 130W Spark plug NGK D8EA Spark plug gap 0,6 mm Cooling system liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump Cooling liquid 1 liter, 40% antifreeze, 60% water, at least –25°C (–13°F) Starting equipment decompressor automatic and hand actuated, cold and hot start knob on carburetor TECHNICAL SPECIFICATIONS – ENGINE 400 SXC USA 2000 Crank shaft axial play..................................................0,03 - 0,12 mm (0,001-0,005 in) run out of crank stud .................................max. 0,08 mm (0,003 in) Connecting rod bearing radial play ..................................................max. 0,05 mm (0,002 in) axial play ...................................................max. 1,00 mm (0,04 in) Piston cast assembly clearance ...................................max. 0,05 mm (0,002 in) Piston rings end gap compression rings ......................................max. 0,60 mm (0,023 in) oil scraper ring ...........................................max. 0,80 mm (0,031 in) Valves seat sealing intake......................................max. 1,50 mm 0,059 in) seat sealing exhaust ...................................max. 2,00 mm (0,080 in) run out of valve heads ...............................max. 0,03 mm (0,001 in) valve guides diameter ................................max. 7,05 mm (0,277 in) Oil pump clearance outer rotor - housing..................max. 0,20 mm (0,008 in) clearance outer rotor - inner rotor..............max. 0,20 mm (0,008 in) Bypaß valve minimum spring lenght..........................................25 mm (1 in) Clutch discs wear limit organic .................................................2,5 mm (0,1 in) Clutch springs minimum lenght ...........................34,5 mm (new 37 mm) (1,36 in - new 1,45 in) Transmission shafts axial play......................................................0,1 - 0,4 mm (0,004 - 0,016 in) ASSEMBLY CLEARANCE, WEAR LIMIT |