Install tensioner spring and tighten timing belt tensioner bolt. In other words, the valve is physically bypassed. The first and easiest test to determine an ignition problem is to perform a spark test as outlined in Chapter 5. The control is always connected by linkage to the trigger assembly. Repair Service Manual Repair Service Manual 2014-08-03. Before start-up, the electrothermal ram needle is retracted the fuel enrichment valve is opened according to the temperature, allowing a high percentage of fuel to flow form the flat chamber into the venturi during start-up.
Keep Your Outboard Running Smoothly. Connect fuel hoses and spark plug leads. Covers all from 1965 to 1989 90-300 hp. If the valve proves to be the source of the problem, either remove the valve from the fuel line or replace the valve with a solenoid operated fuel shutoff valve. Covers Bigfoot Big Foot and Non-Bigfoot models. You get everything you will ever need on one easy-to-use cd-manual. Re-install driven sprockets and timing belt.
The subsequent pages give detailed procedures. It covers every single detail on your vehicle. Two electrothermal valves are installed on the carburetor assembly. After a few minutes, the electrothermal ram needle is fully extended, the fuel enrichment valve is fully closed, and enrichment ceases. Remove the spark plugs one by one and then inspect the electrode end. Install driven sprockets and timing belt. Keep Your Outboard Running Smoothly.
All Manuals Are Windows and Mac compatible! Models Covered are Mercury - Mariner 9. . Install cylinder head cover and driven sprockets. V-6 Cylinder, Two Cycle, Direct Injected. Most all service manual chapters start with an assembly or system illustration, diagrams, exploded parts view, pictures, service information and troubleshooting for the section.
No special software needed to view this manual. Disconnect spark plug leads and fuel hoses. If no adjustment is necessary skip to step 11 on. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Grounding the mercury switch is necessary to prevent the powerhead from accidentally starting while test are being performed. Remove timing belt and driven sprockets.
It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Mercury Outboard motors repair manual. As the throttle is closed, the throttle lever rotates back and the throttle lever link rod returns, causing the diaphragm in the dashpot to move back, As the diaphragm moves back, suction causes the air from the venturi of carburetor 4 to flow through a one-way valve in the carburetors and back to the dashpot. It compensates for the initial wear that occurs during the life of the motor. This is a simple to download book, just like any book you would buy in a store except this book is delivered to you instantly upon purchase. Measure and record the exhaust valve clearance for cylinders 2 and 4.
Align timing marks on driven cams. Manual could be opened on any mobile device like iPad, iPhone or Android device etc. We strongly believe that regardless of how many or how few years experience you may have, there is something new waiting here for you. No special software required as this manual works on all computers. This Service Manual has easy-to-read text sections with top quality diagrams and instructions. Complete step-by-step instructions, diagram's, illustration's, wiring schematics, and specifications to completely repair your vehicle with ease! Insert the proper valve pad into the valve lifter. As the throttle is opened, the throttle lever rotates and pushes the throttle lever link rod.
It compensates for the initial wear that occurs during the life of the motor. This Service Manual has easy-to-read text sections with top quality diagrams and instructions. Keep individual cylinder parts together. Install spark plug cover and flywheel cover. Keep Your Outboard Running Smoothly.
Remove camshaft caps and camshafts. Even if you never plan on touching a wrench and if so, we hope that we can change your mind , this manual will still help you understand what a mechanic needs to do in order to maintain your engine. Follow the Maintenance Schedule recommendations to ensure that the engine is in peak operating condition. . It will take you through the basics of maintaining and repairing your outboard, step by step, to help you understand what the factory trained mechanics already know by heart.
By using the information in this manual, any boat owner should be able to make better informed decisions about what they need to do to maintain and enjoy their outboard. Loosen timing belt tensioner bolt and remove tensioner spring. The throttle lever link rod then pushes the diaphragm in the dashpot, forcing out the air. Align timing marks on driven cams. This is a simple to download book, just like any book you would buy in a store except this book is delivered to you instantly upon purchase. Loosen timing belt tensioner and remove tensioner spring. When the throttle is advanced to increase powerhead rpm, the trigger coils are also advanced.