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90-10240040 DECEMBER 2003
250 HP Jet Drive Installation Manual
NOTICE to COMMISSIONING DEALER
Pre-delivery Preparation Instructions Must Be Performed Before Delivering Boat to the Product Owner.
NOTICE to INSTALLER
After Completing Installation, These Instructions Should Be Placed with the Product for the Owner’s Future Use.
NOTICE to INSTALLER
The United States Coast Guard does not have a method to determine the maximum recommended horse-
power for Inboard Jet Boats. Therefore, it is the responsibility of the boat manufacturer to install the Mercury
Jet Drive, as well as any other Jet Drive model, in a boat which has been determined to be of suitable size,
weight, construction, and hull configuration for the power chosen. The Mercury
Jet Drive, in particular, brings
a new level of performance to the jet boat category and is capable of propelling many hulls at speeds exceed-
ing 50 miles per hour.
In selecting the proper Jet Drive package for a particular application, please consider the overall performance
capability of the craft. Your boat may react to and handle differently with each Jet Drive model.
PLEASE carefully test and evaluate the overall handling characteristics of the boat package before
distribution for sale.
If you have application or installation questions, please contact your Mercury Marine OEM Sales Coordinator.
The Sales Coordinator will arrange to provide the necessary assistance.
Please assess your boat’s performance completely before making the Jet Drive model selection.
Safe boat-
ing is good for everyone.
Table of Contents
General Information
2
. . . . . . . . . . . . . . . . . . . . . . . . . .
Notice to Installer
2
. . . . . . . . . . . . . . . . . . . . . . . . . .
Torque Specifications
3
. . . . . . . . . . . . . . . . . . . . . .
Installation Requirements
3
. . . . . . . . . . . . . . . . . . . . .
Battery/Battery Cables
3
. . . . . . . . . . . . . . . . . . . . .
Boat Construction
4
. . . . . . . . . . . . . . . . . . . . . . . . .
Engine Compartment Ventilation
4
. . . . . . . . . . . .
Exhaust System
4
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Delivery System
5
. . . . . . . . . . . . . . . . . . . . . .
Instrumentation
6
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control and Cables
7
. . . . . . . . . . . . . . . .
Steering Helm and Cable
8
. . . . . . . . . . . . . . . . . . .
Wiring Diagram
9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quicksilver Instrumentation,
Typical Analog Installation Shown
9
. . . . . . . . . . .
Wiring for SmartCraft Gauges
10
. . . . . . . . . . . . . . . . .
Wiring Connections to Paddle Wheel Speed
Sensor, Oil Tank and Fuel Tank
10
. . . . . . . . . . . .
Typical System Layouts – Single Engine
Product Configurations
11
. . . . . . . . . . . . . . . . . . . .
Wiring Information for CAN Type Gauges
12
. . . .
Wiring Accessories for CAN Type Gauges
13
. . .
Typical Installation Configurations
for CAN Type Gauges
14
. . . . . . . . . . . . . . . . . . . . .
Mercury Jet Drive Hull Dimensions
15
. . . . . . . . . . . .
Hull Opening
15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing Jet Pump
16
. . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Cable Adjustment
20
. . . . . . . . . . . . . . . . . . .
Shift Cable Adjustment
23
. . . . . . . . . . . . . . . . . . . . . . .
Installing Powerhead
27
. . . . . . . . . . . . . . . . . . . . . . . .
Fuel Line and Fuel Vapor Vent Hose Connections
28
.
Battery Cable and Remote Wiring Harness
Connections
29
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Throttle Cable Installation
30
. . . . . . . . . . . . . . . . . . . .
Oil Injection Set-Up
31
. . . . . . . . . . . . . . . . . . . . . . . . . .
Bilge Siphon Feature
33
. . . . . . . . . . . . . . . . . . . . . . . .
Water By-Pass System
34
. . . . . . . . . . . . . . . . . . . . . . .
Installation of Flushing Kit
36
. . . . . . . . . . . . . . . . . . . .
Flushing Instructions
38
. . . . . . . . . . . . . . . . . . . . . .
Suggested Flushing Intervals
38
. . . . . . . . . . . . . .
Trim Plate Adjustment
39
. . . . . . . . . . . . . . . . . . . . . . .
Exhaust System Installation
40
. . . . . . . . . . . . . . . . . .
General Exhaust System Notes
40
. . . . . . . . . . . .
Exhaust Outlet Measurement Procedure
40
. . . .
Top View
41
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Aft View
42
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side View
43
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side View of Expansion Chamber Outlet
Pipe and Exhaust Pipe Connection
44
. . . . . . . . .
Pre-delivery Inspection
45
. . . . . . . . . . . . . . . . . . . . . . .
Содержание 250 Jet
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