Yamaha F40BWHD - Maintenance Specifications; Power Unit

MAINTENANCE SPECIFICATIONS
2-3
E
SPEC
MAINTENANCE SPECIFICATIONS
POWER UNIT
Item Unit
Model
Worldwide F40BMHD, WHD F40BED, F40BET
USA, Canada F40MH F40ER, F40TR
CYLINDER HEADS
Warpage limit
(lines indicate straightedge
position)
mm (in) 0.1 (0.004)
CYLINDERS
Bore size mm (in) 65.000 - 65.015 (2.5590 - 2.5596)
Taper limit mm (in) 0.08 (0.003)
Out-of-round limit mm (in) 0.08 (0.003)
ROCKER SHAFT/ARM
Rocker shaft diameter mm (in) 15.971 - 15.991 (0.6288 - 0.6296)
Rocker arm inside diameter mm (in) 16.000 - 16.018 (0.6299 - 0.6306)
CAMSHAFT
Intake "A" mm (in) 30.834 - 30.934 (1.2139 - 1.2179)
Intake "B" mm (in) 25.9 - 26.1 (1.020 - 1.028)
Exhaust "A" mm (in) 30.834 - 30.934 (1.2139 - 1.2179)
Exhaust "B" mm (in) 25.9 - 26.1 (1.020 - 1.028)
Camshaft journal diameter
#1 mm (in) 36.925 - 36.945 (1.4537 - 1.4545)
#2, 3, 4 mm (in) 36.935 - 36.955 (1.4541 - 1.4549)
Camshaft journal oil clearance
#1 mm (in) 0.08 - 0.1 (0.0031 - 0.0039)
#2, 3, 4 mm (in) 0.07 - 0.09 (0.0028 - 0.0035)
Runout limit mm (in) 0.1 (0.0039)