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Power unit technical data Item Valve stem Diameter Intake Exhaust Runout Intake and exhaust Valve guide Inside diameter Intake and exhaust Valve guide clearance Intake Exhaust Installation height Item Valve lifter Outside diameter Valve lifter clearance Camshaft Cam lobe height Intake Exhaust Cam lobe width Intake and exhaust Journal diameter Runout Cylinder head Warpage limit Journal inside diameter Valve spring Free length Tilt limit Valve Clearance Intake Exhaust Seat contact width Intake Exhaust Margin thickness Intake Exhaust

Unit

Model F225CA

LF225CA

F250CA

LF250CA

mm (in) mm (in)

5.477–5.492 (0.2156–0.2162) 5.464–5.479 (0.2151–0.2157)

mm (in)

0.01 (0.0004)

mm (in)

5.504–5.522 (0.2167–0.2174)

mm (in) mm (in) mm (in)

0.012–0.045 (0.0005–0.0018) 0.025–0.058 (0.0010–0.0023) 11.300–11.700 (0.4449–0.4606)

Unit

0 1 2 3

Model F300CA

LF300CA

mm (in) mm (in)

30.970–30.980 (1.2193–1.2197) 0.020–0.055 (0.0008–0.0022)

mm (in) mm (in)

46.661–46.761 (1.8370–1.8410) 46.960–47.060 (1.8488–1.8528)

mm (in) mm (in) mm (in)

35.950–36.050 (1.4154–1.4193) 24.960–24.980 (0.9827–0.9835) 0.030 (0.0012)

mm (in) mm (in)

0.10 (0.0039) 25.000–25.021 (0.9843–0.9851)

mm (in) mm (in)

48.1 (1.89) 1.7 (0.07)

mm (in) mm (in)

0.205 ± 0.035 (0.0081 ± 0.0014) 0.345 ± 0.035 (0.0136 ± 0.0014)

mm (in) mm (in)

1.100–1.400 (0.0433–0.0551) 1.400–1.700 (0.0551–0.0669)

mm (in) mm (in)

0.750–1.150 (0.0295–0.0453) 0.900–1.300 (0.0354–0.0512)

4 5 6 7 8 9 10

A 1-20

2011 YAMAHA F225CA 4-STROKE OUTBOARD Service Repair Manual SN:1000001 and up  
2011 YAMAHA F225CA 4-STROKE OUTBOARD Service Repair Manual SN:1000001 and up  
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