This repair and service manual covers 1993-1995 Mercury Sport Jet, 90 and 120 HP. This manual can be used by anyone, from a first-time do-it-yourselfer to an experienced professional boat mechanic.
Detailed drawings and clear photographs give you all the information you need to do the job right.
Book Excerpt: 1993-1995 Mercury Sport Jet Repair Manual
The first step when diagnosing a fuel delivery problem is to check the fuel flow. Remove the fuel tank cap and look into the tank.
If fuel is present, disconnect and ground the spark plug leads as a safety precaution. Disconnect the fuel line at the carburetor (Figure 20, typical) and place it in a suitable container to catch discharged fuel.
See if fuel flows freely from the fuel hose when the primer bulb is squeezed.
If no fuel flows from the hose, the fuel petcock may be shut off or blocked by rust or foreign matter. The fuel hose may be restricted or kinked or a primer bulb check valve may be defective.
Make sure the vent on the fuel tank cap is open.
Switch box damage may result if the engine is cranked with the spark plug leads disconnected and in an open-circuit condition.
LUBRICATION, MAINTENANCE AND TUNE-UP
When performing engine cranking tests with spark plug leads disconnected, be sure to provide a spark gap by installing a suitable spark tester (part No. FT-11259) or securely grounding spark plug leads to the engine.
The modern marine engine delivers more power and performance than ever before, with higher compression ratios, new and improved electrical systems and other design advances.
Proper lubrication, maintenance and tune-ups have become increasingly important as ways in which you can maintain a high level of performance, extend engine life and extract the maximum economy of operation.
You can do your own lubrication, maintenance and tune-up if you follow the correct procedures and use common sense. The following information is based on recommendations from the manufacturer that will help keep your Sport Jet unit operating at its peak performance level.
Table 1 provides the recommended lubricants, sealants and adhesives. Table 2 provides tune-up specifications. Tables 1-2 are at the end of the chapter.
Subject: 1993, 1994, 1995 Mercury Sport Jet service, maintenance, repair. ISBN-10: 0892876573 | ISBN-13: 9780892876570 | Clymer W815