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D7.3L D-TRONIC DIESEL ENGINES - BRAVO MODELS
3. Route hose to monitor bottle mounted on engine and cut off excess hose.
IMPORTANT: Avoid using excessive hose when routing to gear lube monitor. Hose
should be routed directly, in as straight a line as possible, to avoid low spots (traps)
in the system.
IMPORTANT: Hose must not come in contact with steering system components or the
engine coupler and drive shaft.
Exhaust Water Bypass
MerCruiser D7.3L D-Tronic Models are equipped with an exhaust water bypass system.
The purpose of this exhaust water bypass system is to calibrate the exhaust back pressure
and to provide additional cooling to the drive assembly.
The exhaust water bypass outlet (provided with instructions for installation) must be
installed within the Preferred or Alternative Area as indicated on the template. Refer to the
full scale template (provided). Ensure that the water outlet snout is positioned in such a way
that the water will flow over the top (preferred location) or upper side (alternative location)
of the Drive Assembly.
1. Cut template outline as required. Position on transom.
2. Drill or cut hole as indicated on template.
3. Use silicone or other Marine sealer and install exhaust water outlet on boat transom.
4. Exhaust outlet on transom must be grounded to inner transom plate assembly. Install
ground strap provided.
5. Cut hose to required length. Install between exhaust elbow fitting and exhaust water by-
pass outlet. Use double clamps on hose connections.
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Hose
a -
90 Hose Fitting
b -
Gimbal Housing Fitting
c -
Gear Lube Monitor
d -
Template
a -
Preferred Exhaust Water Bypass Routing
b -
c
a
b
75874
a
75313
b
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