1996 Mercury 15 HP 15HP Outboard 2-Stroke Service Manual


 

1996 Mercury 15 HP Outboard 2-Stroke Service Manual

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INTRODUCTION
 
This 1996 Mercury 15 hp Outboard 2-Stroke Engine service manual download describes the service procedures for the complete motor. Follow the Engine maintenance schedule recommendations to ensure that the motor is in peak operating condition and the emission levels are with in the standards set by states/county Resources Board. Performing the scheduled maintenance on your outboard engine is very important. It compensates for the initial wear that occurs during the life of the motor.
 
All chapters in this Mercury 1996 15 horsepower motor service manual applies to the whole engine and illustrates procedures for the removal and installation of components that are in a detailed step-by-step fashion.
 
Most all Mercury 1996 15hp outboard engine service manual chapters start with an assembly or systems illustration, diagrams, exploded parts view, quality pictures, service information and troubleshooting for the section. The subsequent pages give detailed service/repair procedures. If you don't know the source of the trouble, go to the troubleshooting page for a list of causes and effects to determine the problem.
 
 
 
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IDLE SCREW

Problem: Unable to Reduce Engine RPM to Slow Idle
Chipped or broken reeds on reed block.
Problem: Rough Idle
Excessive preload on reeds.
Problem: Engine Runs Too Lean

Carburetor is loose. Air leaks past mixing chamber cover. Tighten bolts securely. Tighten cover or replace gasket.

Fuel level is too low. Reset float level.

Clogged high speed jet. Inspect jet for varnish or debris and clean.

Restricted fuel flow to carburetor. Check fuel lines and filters for restricted flow.

Incorrect high speed jet. Refer to main jet chart and replace with proper jet.

Idle mixture set too lean. Adjust to run richer. Turn idle mix screw counterclockwise.

Air leakage into fuel system. Inspect fuel line connections, hose clamps, fuel pump and fuel outlet tube (located in fuel tank) for loose fittings.

Anti-siphon valve restricting fuel flow. Inspect valve and/or test engine without valve in fuel system.

Carburetor Removal

1. Loosen primer cam retaining screw.

2. Remove retaining clip.

a - Screw
b - Retaining clip

3. Push down on primer arm and pull primer knob, bezel and slide block out of bottom cowl.
'
4. Remove link wire from fast idle lever.

5. Disconnect fuel line from carburetor.

6. Remove carburetor mounting nuts.

7. Lift carburetor from engine. Remove bleed line from fitting in bottom of carburetor.