KTM 1998 400 R User Manual

ENGLISH
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TECHNICAL DATA – ENGINE 400 / 620 R/XC e ‘98
Crank shaft axial play...................0,03 - 0,12 mm (0,0012 - 0,0047 in)
run out of crank stud.................max. 0,04 mm (0,0016 in)
Connecting rod bearing radial play ...................................max. 0,05 mm (0,002 in)
axial play.....................................max. 1,10 mm (0,043 in)
Cylinder 400 bore diameter..........................max. 89,04 mm (3,5055 in)
Cylinder 620 bore diameter........................max. 101,04 mm (3,9779 in) Piston assembly clearance....................max. 0,12 mm (0,0047 in) Piston rings end gap compression rings......................max. 0,80 mm (0,0315 in)
oil scraper ring.............................max. 1,0 mm (0,0394 in)
Valves seat sealing intake.....................max. 1,50 mm (0,0591 in)
seat sealing exhaust ..................max. 2,00 mm (0,0788 in) run out of valve heads...............max. 0,03 mm (0,0012 in) valve guides diameter................max. 7,05 mm (0,2778 in)
Oil pump clearance outer rotor - housing .max. 0,20 mm (0,0079 in)
clearance outer rotor - inner rotor ..max. 0,20 mm (0,0079
in) Bypaß valve minimum spring lenght...........................25 mm (0,985 in) Clutch clutchspring lenght
min. 34,5 mm (1,36 in), new 37 mm (1,458 in)
Clutch disks organic.....................min. 2,5 mm (0,0985 in)
Cam shaft pin bearing diameter................min. 19,97 mm (0,7868 in)
TOLERANCE, ASSEMBLY CLEARANCE
Engine 400 LC4-E 620 LC4-E Design Liquid-cooled single cylinder 4-stroke engine with balancer shaft and electric starter Displacement 398 cm
3
609 cm
3
Bore / Stroke 89 / 64 mm 101 / 76 mm Ratio 10,8 : 1 10,4 : 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° (249/1) Valve timing by 1 mm IO 22° BTDC EO 60° BBDC IO 13° BTDC EO 53° BBDC valve clearence IC 42° ABDC EC 4° ATDC IC 51° ABDC EC 11° ATDC Valve diameter Intake: 36 mm Exhaust: 30 mm Valve clearence cold Intake: 0,20 mm Exhaust: 0,20 mm 0,15 mm Exhaust: 0,15 mm Crank shaft bearing 2 cylinder roller bearing Connecting rod bearing needle bearing Top end bearing bronze bushing Piston forged/cast aluminium alloy Piston rings 1 compression ring, 1 taper face ring, 1 oil scraper ring Engine lubrication two Eaton-oilpumps Engine oil see bellow # Engine oil quantity appr. 2,1 liters including frame 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 DC-CDI ignition with digital advanced system type KOKUSAN Ignition timing adjustment to max. 38° BTDC at 6000 rpm Generator 12V 200W Spark plug NGK DR8EA Spark plug gap 0,7 mm Cooling system liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump Cooling liquid 1liter, 40% antifreeze, 60% water, at least –25 ° C (–13 ° F) Starting equipment electric starter and kickstarter

KTM 1998 400 R Specifications

General

Brand	KTM
Model	1998 400 R
Category	Motorcycle
Language	English