2006 SD Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 61Get this manual
MAINTENANCE TIMING BELT Remove the timing belt from the cam pulley first, then from the timing pulleyInstall the timing belt on the timing pulley first, then the cam pulleyIMPORTANT: Always keep the timing belt away from any grease and oilIMPORTANT: The timing belt must be installed with the arrow toward the direction of rotation 004803
CAUTION
Do not rotate the crankshaft or the cam pulley before installing the belt; the following must be checked: The PUNCH mark on the timing pulley aligns with the INDEX mark on the cylinder blockEither of the PUNCH marks on the cam pulley aligns with the INDEX mark on the cylinder head blockIf the timing pulley or the cam pulley is rotated with the timing belt removed or installed but misaligned, this may cause the valves to become bentIf the alignment marks are not correctly matched, loosen the valve adjusting lock nuts and the valve adjusting screws fully to prevent valve damageThen align the marks correctlly by rotating the cam pulley clockwise