Service Manual 5008736_55 MFE Midsection [Exhaust Housing Service]

The exhaust ho using contains no serviceable internal parts. The exhaust water valve and the exhaust relief muffler can both be serviced without removing the exhaust housing.

Exhaust Housing Removal

Before removing the midsection:

• Remove the gearcase . Refer to Gearcase GEARCASE REMOVAL AND INSTALLATION on p. 238.

• Remove the powerhead. Refer to POWER-HEAD REMOVAL on p. 182.

Remove the three lower mount cover screws.

Separate lower mount covers from swivel bracket.

Check condition of the lower front mount a nd two lower side mounts.

• 1. Lower front mount

• 1. Lower side mount

Remove the three upper mount t o exhaust housing screws. Be sure to support exhaust housing so it does not fall.

Remove the exhaust housing.

Disconnect water valve electrical connector.

Remove screws and bracket holding valve to exhaust housing.

Remove tie straps and disconnect water valve hoses (3) from exhaust housing.

• 1. Electrical connector
• 2. Inlet hose
• 3. Outlet hose

Check that all water passages are clear.

• 1. Fitting, water passage

Install hoses to fittings on exhaust housing. Place water valve and bracket in position.

Apply Nut Lock to screws, install and tighten 60 to 84 in. lbs. (7 to 9.5 N.m).

• 1. Exhaust water valve screws

Remove exhaust relief cavity cover to inspect for debris. Clean as needed.

• 1. Exhaust relief muffler cover

Apply Gasket Sealing Compound to cover gasket and install cover.

Apply Nut Lock to co ver screws an d tighten to a torque of 60 to 84 in. lbs. (7 to 9.5 N.m).

Bring the exhaust housing into position with the stern bracket.

Apply Nut Lock to threads of the upper mount screws. Install the screws and place ground lead under the center screw . Tighten screws to a torque of 18 to 20 ft. lbs. (24.5 to 27 N·m).

• 1. Ground lead

Place lower thrust washer on the steering shaft and place the lower front mount into position.

• 1. Thrust washer
• 2. Lower front mount

Install lower side mount covers. Install and tighten the screws in stages to a torque of 16 to 18 ft. lbs. (22 to 24.5 N·m) following sequence shown.

Torque sequence

Install gearcase. Refer t o Gearcase GEARCASE REMOVAL AND INSTALLATION on p. 238.

Install powerhead. Refer to Powerhead POWERHEAD INSTALLATION on p. 204.