TECHNICAL DATA - ENGINE
82
Design
1-cylinder 4-stroke engine, water-cooled
Displacement
349.7 cm³ (21.34 cu in)
Stroke
57.5 mm (2.264 in)
Bore
88 mm (3.46 in)
Compression ratio
13.5:1
Idle speed
2,050… 2,150 rpm
Control
DOHC, four valves controlled via cam lever, drive via timing
chain
Valve diameter, intake
36.3 mm (1.429 in)
Valve diameter, exhaust
29.1 mm (1.146 in)
Valve clearance
Intake at: 20 °C (68 °F)
0.10… 0.15 mm (0.0039… 0.0059 in)
Exhaust at: 20 °C (68 °F)
0.13… 0.18 mm (0.0051… 0.0071 in)
Crankshaft bearing
2 cylinder bearings
Conrod bearing
Needle bearing
Piston pin bearing
Not a bearing bush - DLC-plated piston pins
Pistons
Forged light alloy
Piston rings
1 compression ring, 1 oil scraper ring
Engine lubrication
Pressure circulation lubrication with two Eaton pumps
Primary transmission
24:73
Clutch
Multidisc clutch in oil bath/hydraulically activated
Gearbox (All SX
‑
F models)
5-gear, claw shifted
Gearbox (XC
‑
F)
6-gear, claw shifted
Transmission ratio (All SX
‑
F models)
1st gear
14:30
2nd gear
15:24
3rd gear
18:24
4th gear
21:24
5th gear
22:21
Transmission ratio (XC
‑
F)
1st gear
15:31
2nd gear
16:25
3rd gear
20:25
4th gear
22:23
5th gear
25:22
6th gear
26:20
Alternator (All SX
‑
F models)
12 V, 66 W
Alternator (XC
‑
F)
12 V, 168 W
Ignition
Contactless controlled fully electronic ignition with digital igni-
tion adjustment
Spark plug
NGK LMAR9AI-8
Spark plug electrode gap
0.8 mm (0.031 in)
Cooling
Water cooling, permanent circulation of coolant by water pump
Starting aid (All SX
‑
F models)
Electric starter
Starting aid (XC
‑
F)
Kick starter and electric starter
Summary of Contents for SXF 350
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