20 Technical Data; Engine; Engine Tightening Torques - KTM 85 SX 2021 Owner's Manual

20 TECHNICAL DATA

20.1
Design
Displacement
Stroke
Bore
Idle speed
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
Engine lubrication
Primary transmission
Clutch
Transmission
Transmission ratio
1st gear
2nd gear
3rd gear
4th gear
5th gear
6th gear
Ignition
Spark plug
Spark plug electrode gap
Cooling
Starting aid
20.2
Screw, adjusting lever
Screw, clutch spring retainer
Screw, control lever
Screw, crankshaft speed sensor
Screw, exhaust control bearing
support
Screw, exhaust control cap
Screw, exhaust control cover
Screw, guide piece
Screw, ignition system/stator
114

Engine

Engine tightening torques

M5x16
M5
M5x12
M5
M5
M5
M5
M5x12
M5
1-cylinder 2-stroke engine, water-cooled, with reed
intake and exhaust control
84.93 cm³ (5.1828 cu in)
48.95 mm (1.9272 in)
47 mm (1.85 in)
1,400 ... 1,500 rpm
1 grooved ball bearing / 1 roller bearing
Needle bearing
Needle bearing
Aluminum cast
1 rectangular ring
Mixed lubrication
20:64 straight cut spur gear wheel drive
Multidisc clutch in oil bath/hydraulically activated
6-gear transmission, claw shifted
11:29
14:28
16:26
19:26
21:25
20:21
Kokusan 504
NGK BR9 ECMVX
0.60 mm (0.0236 in)
Water-cooled
Kick starter
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
4 Nm (3 lbf ft)
5 Nm (3.7 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
Loctite ® 243™
Loctite ® 243™
Loctite ® 243™
Loctite ® 243™
Loctite ® 243™
Loctite ® 243™