23
6.3
Spark plug check
The spark plug has one of the essential roles in the functioning of the engine. That is why it is really of
the primordial importance to check its state as often as written in the list. Bad adjustments, the heat and
all the deposits can all damage the spark plug. For this bike, SCORPA recommends to use the following
model :
NGK R CR 8E
In order to take the spark plug off, follow those two stages :
1. Take off the anti-interference system
2. Unscrew the spark plug in the direction (B) thanks to a spark plug spanner.
The spark plug state check consists in two stages too :
1. Make sure the porcelain colour around the electrodes is dark or light coffee coloured, because
that colour shows the spark plug works in good conditions.
2. Check the weakening level and that the carbon deposits thickness are not excessive. If one of
those situations happens, it is time to replace the spark plug.
There are four phases in the spark plug reassembly :
1. Measurement of the electrodes gap, thanks to a wedge whole set. If needs be, adjust to the
recommended value: 0,6 to 0,7mm
A
B
Spark plug site
Содержание 2008 SY-250FR 15thA
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Страница 61: ...4 1 Glossary ...
Страница 64: ...7 3 Camshafts 3 1 Cylinder head cover ...
Страница 65: ...8 3 2 Camshafts ...
Страница 66: ...9 3 3 Removal points 3 3 1 Camshafts ...
Страница 67: ...10 ...
Страница 68: ...11 3 4 Inspection 3 4 1 Camshafts ...
Страница 69: ...12 ...
Страница 70: ...13 3 4 2 Camshaft sprocket 3 4 3 Decompression system 3 4 4 Timing chain tensioner ...
Страница 71: ...14 3 5 Assembly and installation 3 5 1 Camshaft ...
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Страница 74: ...17 4 Cylinder head 4 1 Removal points ...
Страница 75: ...18 4 2 Inspection ...
Страница 76: ...19 4 3 Assembly and installation 4 3 1 Cylinder head ...
Страница 77: ...20 5 Valves and valves springs ...
Страница 78: ...21 5 1 Removal points 5 1 1 Valve lifter and valve cotter ...
Страница 79: ...22 5 2 Inspection 5 2 1 Valves ...
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Страница 82: ...25 ...
Страница 83: ...26 5 2 2 Valve spring 5 2 3 Valve lifter ...
Страница 84: ...27 5 3 Valve clearance inspection and adjustment ...
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Страница 89: ...32 5 4 Assembly and installation 5 4 1 Valve and valve spring ...
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Страница 91: ...34 6 Cylinder and piston ...
Страница 92: ...35 6 1 Removal points 6 1 1 Piston and piston ring ...
Страница 93: ...36 6 2 Inspection 6 2 1 Cylinder and piston ...
Страница 94: ...37 ...
Страница 95: ...38 6 2 2 Piston ring ...
Страница 96: ...39 6 3 Piston pin ...
Страница 97: ...40 6 4 Assembly and installation 6 4 1 Piston ring and piston ...
Страница 98: ...41 6 5 Cylinder ...
Страница 99: ...42 7 Clutch ...
Страница 100: ...43 ...
Страница 101: ...44 7 1 Removal points 7 1 1 Clutch boss 7 2 Inspection 7 2 1 Clutch housing and boss 7 2 2 Primary driven gear ...
Страница 102: ...45 7 2 3 Clutch spring 7 2 4 Friction plate 7 2 5 Clutch plate 7 2 6 Push lever shaft ...
Страница 103: ...46 7 2 7 Push rod 7 3 Assembly and installation 7 3 1 Push lever shaft ...
Страница 104: ...47 7 3 2 Clutch ...
Страница 105: ...48 ...
Страница 106: ...49 ...
Страница 107: ...50 8 Oil filter element water pump and right crankcase cover ...
Страница 108: ...51 ...
Страница 109: ...52 8 1 Removal points 8 1 1 Impeller shaft 8 1 2 Oil seal ...
Страница 110: ...53 8 2 Inspection 8 2 1 Oil delivery pipe 8 2 2 Impeller shaft 8 2 3 Impeller shaft gear 8 2 4 Bearing ...
Страница 111: ...54 8 2 5 Oil seal 8 3 Assembly and installation 8 3 1 Oil seal 8 3 2 Impeller shaft ...
Страница 112: ...55 8 3 3 Right crankcase cover ...
Страница 113: ...56 8 3 4 Kickstarter crank ...
Страница 114: ...57 8 3 5 Water pump housing 8 3 6 Oil filter element ...
Страница 115: ...58 9 Balancer ...
Страница 117: ...60 9 2 2 Balancer ...
Страница 118: ...61 9 3 Assemblage et installation 9 3 1 Balancer shaft drive gear and balancer shaft drive gear ...
Страница 119: ...62 10 Oil pump ...
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Страница 121: ...64 10 1 Inspection 10 1 1Oil pump ...
Страница 122: ...65 10 2 Assembly and installation 10 2 1oil pump ...
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Страница 124: ...67 11 Kick shaft and shift shaft ...
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Страница 128: ...71 11 3 Assembly and installation 11 3 1Segment 11 3 2Stopper lever ...
Страница 129: ...72 11 3 3Shift guide and shift lever assembly ...
Страница 130: ...73 11 3 4Shift shaft 11 3 5Kick shaft assembly ...
Страница 131: ...74 11 3 6Kick idle gear ...
Страница 132: ...75 12 AC Magneto ...
Страница 133: ...76 12 1 Removal points 12 1 1Rotor 12 2 Inspection 12 2 1AC Magneto 12 2 2Woodruff key ...
Страница 134: ...77 12 3 Assembly and installation 12 3 1AC Magneto ...
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Страница 136: ...79 13 Crankcase and crankshatf ...
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Страница 138: ...81 13 1 Crankcase bearing ...
Страница 139: ...82 13 2 Removal points 13 2 1Crankcase ...
Страница 140: ...83 13 2 2Crankshaft 13 2 3Crankcase bearing 13 3 Inspection 13 3 1Timing chain and timing chain guide ...
Страница 141: ...84 13 3 2Crankcase 13 3 3Crankshaft ...
Страница 142: ...85 13 3 4Oil strainer 13 3 5Oil delivery pipe 2 13 4 Assembly and installation 13 4 1crankcase bearing ...
Страница 143: ...86 13 4 2Cranshaft ...
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Страница 146: ...89 14 Transmission ...
Страница 147: ...90 14 1 Removal points 14 1 1Transmission 14 2 Inspection 14 2 1Gears ...
Страница 148: ...91 14 2 2Bearing 14 2 3Shift fork shift cam and segment ...
Страница 149: ...92 14 3 Assembly and installation 14 3 1Transmission ...
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Страница 157: ...5 2 Plastics ...
Страница 165: ...13 9 Front brake ...
Страница 167: ...15 10 Rear brake ...
Страница 169: ...17 11 Steering ...
Страница 177: ...25 17 Frame ...
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Страница 181: ...2 1 Electrical 1 1 Wiring diagram ...
Страница 182: ...3 1 2 Spark gap test 1 3 Leads and ignition coil connection inspection ...
Страница 183: ...4 1 4 Ignition coil inspection ...