CAMSHAFT
5-14
EAS1SM9207
CHECKING THE CAMSHAFT
1. Check:
• Camshaft lobes
Blue discoloration/pitting/scratches
Re-
place the camshaft.
2. Measure:
• Camshaft lobe dimensions “A” and “B”
Out of specification
Replace the cam-
shaft.
3. Measure:
• Camshaft runout
Out of specification
Replace.
4. Measure:
• Camshaft-journal-to-camshaft-cap clear-
ance
Out of specification
Measure the cam-
shaft journal diameter.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Install the camshaft into the cylinder head.
b. Position a strip of Plastigauge® “1” onto the
camshaft journal as shown.
Camshaft lobe dimensions
Lobe height (Intake)
31.730–31.830 mm (1.2492–
1.2531 in)
Limit
31.630 mm (1.2453 in)
Base circle diameter (Intake)
22.450–22.550 mm (0.8839–
0.8878 in)
Limit
22.350 mm (0.8799 in)
Lobe height (Exhaust)
33.370–33.470 mm (1.3138–
1.3177 in)
Limit
33.270 mm (1.3098 in)
Base circle diameter (Exhaust)
25.211–25.311 mm (0.9926–
0.9965 in)
Limit
25.111 mm (0.9886 in)
1
2
3
Camshaft runout limit
0.030 mm (0.0012 in)
Camshaft-journal-to-camshaft-
cap clearance
0.028–0.062 mm (0.0011–0.0024
in)
1
Summary of Contents for YZ250F 2016
Page 4: ......
Page 10: ......
Page 12: ......
Page 16: ...LOCATION OF IMPORTANT LABELS 1 2 EUR ...
Page 17: ...LOCATION OF IMPORTANT LABELS 1 3 AUS NZL ZAF ...
Page 40: ...CLEANING AND STORAGE 1 26 ...
Page 63: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 22 ...
Page 66: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 25 ...
Page 68: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27 ...
Page 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29 ...
Page 72: ...CABLE ROUTING DIAGRAM 2 31 EAS1SM9062 CABLE ROUTING DIAGRAM ...
Page 74: ...CABLE ROUTING DIAGRAM 2 33 ...
Page 76: ...CABLE ROUTING DIAGRAM 2 35 ...
Page 78: ...CABLE ROUTING DIAGRAM 2 37 ...
Page 80: ...CABLE ROUTING DIAGRAM 2 39 ...
Page 82: ...CABLE ROUTING DIAGRAM 2 41 ...
Page 122: ...ELECTRICAL SYSTEM 3 38 ...
Page 190: ...CHAIN DRIVE 4 66 ...
Page 286: ......
Page 293: ...CHARGING SYSTEM 8 7 2 AC magneto 3 Rectifier regulator 4 Joint connector 5 Condenser ...
Page 295: ...CHARGING SYSTEM 8 9 ...
Page 321: ...FUEL PUMP SYSTEM 8 35 ...
Page 322: ...ELECTRICAL COMPONENTS 8 36 EAS1SM9331 ELECTRICAL COMPONENTS EAS1SM9332 9 10 1 2 3 4 5 6 7 8 ...
Page 324: ...ELECTRICAL COMPONENTS 8 38 EAS1SM9333 CHECKING THE SWITCHES Y W P Sb 1 2 P Sb Y W ...
Page 325: ...ELECTRICAL COMPONENTS 8 39 1 Engine stop switch 2 Neutral switch ...
Page 334: ...ELECTRICAL COMPONENTS 8 48 ...
Page 342: ...LIST OF SELF DIAGNOSTIC AND FAIL SAFE ACTIONS 9 7 ...
Page 353: ......
Page 354: ...PRINTED IN JAPAN E PRINTED ON RECYCLED PAPER ...