Thus, for safety and other reasons, it is a good idea to verify information here to make sure it matches up with your boat. Measure and record the exhaust valve clearance for cylinders 1 and 3. This additional air flows into the carburetors and mixes with the fuel from the main jets. However, enough information in 30 horsepower outboard repair manuals is given for do-it-yourself or apprentice mechanics to correctly and safely perform repair work to their 30 horsepower outboard motor and components. Also, the diaphragm functions as a coasting enrichener during quick deceleration, preventing the engine form stalling.
Align timing marks on driven cams. 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. The information, software, products, and services published on this web site may include inaccuracies or typographical errors. Thanks for any help and for reading. Install spark plug cover and flywheel cover.
Remove timing belt and driven sprockets. If no adjustment is necessary skip to step 11 on. This engine starts, idles, and runs great. Seafoam seems to fix everything…in motors with a lot of miles and a lot of carbon buildup. As the throttle is opened, the throttle lever rotates and pushes the throttle lever link rod.
This 30 hp Mariner Made by Mercury is a short shaft tiller-style outboard with a manual start. Measure and record the intake valve clearance for cylinders 3 and 4. Adjust tab if out of specification. The throttle lever link rod then pushes the diaphragm in the dashpot, forcing out the air. Mariner by Mercury Marine outboard motor was made for the saltwater environment. W e don't make parts for those. The in-line, one-way valve prevents the air in the hoses from flowing back to the dashpot.
With carburetor turned upside down, and carb scale seated on inner edge, check float level from top of float to float bowl flange as shown. Measure and record the exhaust valve clearance for cylinders 2 and 4. Yamaha 30 hp 4 stroke idle adjusting screw image yamaha 30 hp 4 stroke no spark ignition yamaha 30 hp 4 stroke outboard idle adjustment yamaha 30 hp four stroke outboard motor troubleshooting manual yamaha 30 hp impeller yamaha 30 hp outboard 2004 service repair maintenance yamaha 30 hp outboard manual yamaha 30 hp outboard service manual download yamaha 30 hp outboard timing yamaha cv 30 hp manual yamaha outboard 30 hp repair manuals pdf how to converse suzuki dt 25 hp in 30. This is a 2 cylinder model. The iboats are another excellent source of information. Install tensioner spring and tighten timing belt tensioner bolt.
Turn the flywheel 360° clockwise. The piston displacement is 30. This motor has 2 cylinders and is a 2 stroke which means it will be light enough to be installed on most 30 hp capable boats. Click on manuals, click on Mariner, move slider below manuals to the one you need and click on that manual. . With the outboard in forward gear, adjust idle speed screw to obtain the specified idle speed. The bore and stroke are 2.
This is my first boat and motor so I'm pretty green as far as knowledge. The most important tool in your toolbox may be your Clymer manual -- get one today. Parts ordered from this website may or may not be in dealer stock at the time of order. From basic maintenance and troubleshooting to complete overhauls, our Mariner Outboard manuals provide the information you need. Models Covered are Mercury - Mariner 9. N o clue what's wrong! The air flows through the in-line, one-way valve, and then to all of the carburetors.
Bar rnust be normal engine shut-off. Compression is very strong on this engine at about 120psi even. Mastertech may make improvements to this site at any time. Mercury-Mariner, Johnson-Evinrude, Yamaha, Honda, Suzuki Common Searches. Covers Bigfoot Big Foot and Non-Bigfoot models. The displacement for the pistons is 39. Be sure to do your testing under your normal boating conditions and with a good propeller not bent, cracked, or excessively chipped.
Manuals available for most year models: 1965 1967 1966 1969 1968 1971 1970 1972 1971 1973 1975 1974 1977 1976 1997 2000 1986 1985 1987 2002 2001 2004 2003 2006 2005 2006 2007 2008 2009 2010 2011 1979 1978 1981 1980 1983 1982 1984 1983 1986 1989 1988 1991 1990 1993 1992 1994 1993 1996 1995 1998 1999. Carefully pry up the valve pad and remove it. Engine Manual: Information on this page has come from multiple third parties and can not be guaranteed to be accurate. O ur techs only fix late models. The point is not that … 2005-06-29 13:18:12.
Engine Manual: Information on this page has come from multiple third parties and can not be guaranteed to be accurate. The outboard marine mechanic should carefully read the text and become familiar with the 30 horsepower marine engine service manual procedures before beginning the work. How did we get into this disaster and what can we do about it? Most tools can be rented at local parts stores. This motor is water cooled. There's nothing these 30 horsepower repair manuals doesn't cover. Changes are periodically added to the information herein. Measure intake and exhaust valve clearance using the Valve Clearance Measurement Steps below.