1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 4Get this manual
SPECIFICATIONS
TIMING BELT
Deflection Free Length "a" Tilt Limit "b"
0.39 in(10 mm) 1.354 in(34.4 mm) Less than 0.043 in(1.1 mm)
VALVE SPRING
Compressed Pressure (Installed) Intake Exhaust Dirof Winding (IntakeExhaust) VALVE GUIDES Valve Guide Inside Diameter Intake Valve Exhaust Valve Warp Limit
23.125.4 lb (10.511.5 kg) 23.125.4 lb (10.511.5 kg) Right Hand 0.21650.2170 in(5.5005.512 mm) 0.21650.2170 in(5.5005.512 mm) 0.004 in(0.1 mm)