Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 158Get this manual
89Connect pul se hose to check valve fitting on crankcase cover Refer to Section 2C for timing and synchronization proceduresAfter these procedures are completedair box cover may be reinstalled with 14 boltsTorq ue bolts to 30 lbin(3.3 Nm)
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90Sec ure electrical cables and oil hoses to attenuator cover with clamp and boltsTorque bolts to 30 lbin(3.3 Nm)