Mercury 25 EFI Service Manual page 214

Service Procedures
2. Ensure the VST drain hose is through the bottom cowl.
a
b
3. Install the smaller diameter hose to the fuel pressure regulator vent. Secure the hose with a spring clamp.
4. Install a 16.8 mm diameter hose clamp onto the fuel return hose. Install the fuel return hose onto the VST. Crimp the fuel
return hose clamp using the hose clamp tool.
Hose Clamp Tool Kit
5. Install the fuel delivery hose to the VST. Secure the fuel delivery hose with a spring clamp.
a
6. Align the VST support with the grommet on the cylinder block and install the VST onto the grommet.
7. Install a clamp onto a VST bolt. Install a washer onto the bolt. Install the bolt with the clamp and washer onto the upper
VST mounting grommet.
8. Install the remaining VST bolt and washer into the rear VST mounting grommet.
9. Tighten the VST bolts to the specified torque.
Page 3C-30
c
© 2016 Mercury Marine
a - VST vent hose
b - VST drain hose
c - Fuel pressure regulator vent hose
10214
91‑803146A04
a - Fuel pressure regulator vent hose
b - Fuel return hose
b
c - Fuel delivery hose
c
9853
10325
90-8M0105568 eng MARCH 2016