Crankcase Assembly - Yamaha F200B Service Manual

SPEC
Item
Valve spring
Free length
Tilt
Valve lifter
Outside diameter
Valve lifter clearance
Camshaft
Cam lobe height
Intake
Exhaust
Cam lobe width
Intake and exhaust
Journal diameter
Runout
Valve
Clearance
Intake
Exhaust
Head diameter
Intake
Exhaust
Seat contact width
Intake
Exhaust
Margin thickness
Intake
Exhaust

Crankcase assembly

Item
Cylinder
Bore
Piston
Diameter
Measuring point
Piston clearance
Ring groove (top)
Ring groove (2nd)
Ring groove (oil)
Pin boss inside diameter
Pin outside diameter
Oversize diameter
1st
1-13
Specification
Unit
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
Unit
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
Model
F200BET FL200BET F250GET FL250GET
48.1 (1.89)
1.7 (0.07)
30.970–30.980 (1.2193–1.2197)
0.020–0.055 (0.0008–0.0022)
46.311–46.411 (1.8233–1.8272)
45.360–45.460 (1.7858–1.7898)
35.950–36.050 (1.4154–1.4193)
24.960–24.980 (0.9827–0.9835)
0.015 (0.0006)
0.205 ± 0.035 (0.0081 ± 0.0014)
0.345 ± 0.035 (0.0136 ± 0.0014)
36.400–36.600 (1.4331–1.4409)
31.400–31.600 (1.2362–1.2441)
1.100–1.400 (0.0433–0.0551)
1.400–1.700 (0.0551–0.0669)
0.500–0.900 (0.0197–0.0354)
0.900–1.300 (0.0354–0.0512)
Model
F200BET FL200BET F250GET FL250GET
94.000–94.017 (3.7008–3.7014)
93.921–93.941 (3.6977–3.6985)
13.500 (0.5315)
0.075–0.080 (0.0030–0.0031)
1.230–1.250 (0.0484–0.0492)
1.220–1.240 (0.0480–0.0488)
2.510–2.530 (0.0988–0.0996)
21.021–21.031 (0.8276–0.8280)
21.008–21.017 (0.8271–0.8274)
94.176–94.186 (3.7077–3.7081)