3
ENGINE TECHNICAL DATA 250Fi
-300F
i EN EU4 250F
i-300
Fi
ENGINE MODEL
250
300
Type
4-stroke single cylinder twin cam, liquid-cooled
Displacement
249 cm
3
291 cm
3
Bore x stroke
77x53.6 mm
81x56.5 mm
Compression
14: 1
13.7: 1
Fuel
RON 95 unleaded super fuel (ethanol allowed <10%)
Distribution
4 overhead valve twin cam driven by silenced chain
A / S camshafts
FA14 / FS4
FA4 / FS4
Suction valve diameter
32 mm Ti
Exhaust valve diameter
26.8 mm Ti
Cold suct. valve play
0.10 mm
Cold exh. valve play
0.15 mm
Engine shaft supports
1 ball + 1 roller bearing
Connection rod bearing
Bushing
Pin coating
DLC
Piston
Forged light alloy
Segments
1 s 1 oil scraper
Lubrication
2 oil pumps (1 for de1 for recovery)
Engine oil
SAE 10W/50
Engine oil amount (oil change/
engine overhaul)
1.25/1.35 litres
Straight tooth gear primary
transmission
18 / 59
20 / 59
Clutch
with multiple discs in oil bath
Gearbox (with front couplings)
6 gears
Gearbox ratios
1
st
2
nd
3
rd
4
th
5
th
6
th
(250)
14:30
16:28
20:29
22:27
24:25
20:19
(300)
13:31
15:27
16:23
20:24
20:21
22:20
Generator
12V 180W
NGK spark plug
CR 9EIX
Electrode distance
0.8 mm
Cooling
fluid, 40% antifreeze, 60% water (up to -25°C) - forced circulation with pump
Fluid amount
1 litre
Start up
E.S. + K.S.
Key:
E.S. =
Electric Start
K.S. =
Kick start
WARNING
TM reserves the right to make modifications to its products for technical improvements without prior notice.
TECHNICAL SPECIFICATIONS
Содержание 2010 STROKE 250
Страница 1: ...www tmracing it Ed 01 02 2020 250 300 MX EN SMX SMR 2020 Workshop Manual 4 STROKE ENGINE...
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Страница 11: ...7 1 ADJUSTMENTS REPLACEMENTS...
Страница 30: ...26 ADJUSTMENTS REPLACEMENTS...
Страница 31: ...27 2 ENGINE DISASSEMBLY...
Страница 85: ...NOTE...
Страница 86: ...NOTE...
Страница 87: ......
Страница 88: ...www tmracing it...