20 TECHNICAL DATA
120
20.1
Engine
Design
1-cylinder 2-stroke engine, water-cooled, with reed
intake and exhaust control
Displacement
249 cm³ (15.19 cu in)
Stroke
72 mm (2.83 in)
Hole
66.4 mm (2.614 in)
Exhaust control - setting measurement
1.8
+ 0.2
−
0
mm (0.071
+ 0.008
−
0
in)
Crankshaft bearing
1 grooved ball bearing/1 roller bearing
Conrod bearing
Needle bearing
Piston pin bearing
Needle bearing
Piston
Cast aluminum
Piston rings
2 half keystone rings
X distance (upper edge of piston to upper edge of
cylinder)
0 … 0.10 mm (0 … 0.0039 in)
Z distance (height of control flap)
49.0 mm (1.929 in)
Primary transmission
26:73
Clutch
Multidisc clutch in oil bath/hydraulically activated
Transmission
5-gear transmission, claw shifted
Transmission ratio
first-gear
14:28
second-gear
16:26
third-gear
18:24
fourth-gear
21:24
fifth-gear
22:21
Ignition system
Contactless controlled fully electronic ignition with
digital ignition adjustment
Spark plug
NGK BR 8 ECM
Spark plug electrode gap
0.60 mm (0.0236 in)
Starting aid
Kick starter system
20.2
Engine tightening torques
Screw, inner membrane sheets
EJOTDELTA PT
®
35x25
1 Nm (0.7 lbf ft)
Screw, membrane support plate
EJOTDELTA PT
®
30x12
1 Nm (0.7 lbf ft)
Screw, outer membrane sheets
EJOTDELTA PT
®
30x6
1 Nm (0.7 lbf ft)
Screw, angle lever, exhaust con-
trol
M5
6 Nm (4.4 lbf ft)
Loctite
®
243™
Screw, bearing retainer
M5
6 Nm (4.4 lbf ft)
Loctite
®
243™
Screw, clutch spring retainer
M5
6 Nm (4.4 lbf ft)
Screw, crankshaft speed sensor
M5
6 Nm (4.4 lbf ft)
Loctite
®
243™
Screw, exhaust control bearing
support
M5
6 Nm (4.4 lbf ft)
Loctite
®
243™
Screw, exhaust control cap
M5
5 Nm (3.7 lbf ft)
Screw, exhaust control cover
M5
4 Nm (3 lbf ft)
Содержание F2301V1
Страница 1: ...OWNER S MANUAL 2022 TC 250 Art no 3402530en ...
Страница 2: ......
Страница 124: ...20 TECHNICAL DATA 122 Nut primary gear wheel M18LHx1 5 150 Nm 110 6 lbf ft Loctite 243 ...