Positive Crankcase Ventilation Valve (Pcv); Changing - Mercury 350 MAG Manual

Section 5 - Maintenance
3. Remove the flame arrestor.
b
c
d
e
f
a - Engine cover knob
b - Engine cover
c - Nuts, flame arrestor
d - Cover mount bracket
e - Flame arrestor
f - Crankcase ventilation hose
4. Clean the flame arrestor with warm water and a mild detergent.
5. Inspect the flame arrestor for holes, cracks, or deterioration. Replace if necessary.
6. Allow the flame arrestor to air dry completely before use.
7. Clean the crankcase ventilation hose with warm water and a mild detergent. Dry with compressed air or allow to air dry
completely.
8. Inspect the crankcase ventilation hose for cracks or deterioration. Replace if necessary.
9. Install the flame arrestor and flame arrestor bracket. Torque the flame arrestor bracket nuts to specifiaction.
Description
Flame arrestor bracket nut
10. Connect the crankcase ventilation hose to the fitting on the flame arrestor and valve cover.
11. Install the engine cover.

Positive Crankcase Ventilation Valve (PCV)

Changing

NOTE: We recommend the use of Mercury MerCruiser replacement parts to ensure compliance with emission regulations.
Page 94
a
33180
Nm lb‑in.
12 106
90-8M0050539 MAY 2011
eng
lb‑ft
–