They work wonderfully, but under heavy deceleration, the vaccum still feeds the bowl, and it builds up excess fuel, which eventually burns off as a backfire. In addition to instruction on engine tuneup, disassembly and reassembly, the fuel system, electrical system, ignition system and cooling system, you'll get expert guidance on tilt and trim, the hand rewind starter, engine and torque specs, wiring diagrams, advice on maintenance and off-season boat storage and information on the powerhead. This repair and service manual covers 1995-2004 Yamaha, Mercury, Mariner 4-stroke outboard motors, 2. Our Mercury manuals will guide you step by step from the easiest to the most difficult tasks on your marine engine. Numbered instructions guide you through every repair procedure step by step. The problem is that once you have gotten your nifty new product, the yamaha mercury mariner outboards 25 225hp 1995 2004 repair manual gets a brief glance, maybe a once over, but it often tends to get discarded or lost with the original packaging.
There are normally 2 methods used in testing lighting coils, a static resistance check and a dynamic cranking or running output voltage check. Your order will usually ship the same business day. We currently specialize in sales and installation of lower units and bow thrusters. Jun 22, 2010 Your primary jets in the carbs are clogged. This tacky substance will provide an even coating all around. The backfire is due to the vaccum fed carbs that yamaha runs.
Jul 01, 2010 is it a straight thru exhaust, or is it just a head pipe with nothing attached? Hi, Anonymous and the usual suspects are: 1. On these late-model motors, the entire stator assembly must be replaced if a problem is isolated to the ignition charge circuit. Detailed substeps expand on repair procedure information. Yamaha Mercury Mariner Outboards 25 225hp 1995 2004 Repair Manual can be very useful guide, and yamaha mercury mariner outboards 25 225hp 1995 2004 repair manual play an important role in your products. Register a Free 1 month Trial Account.
Generally speaking cranking or running tests are more accurate and more likely to show intermittent problems. Contaminated or plugged low-speed circuit. Notes, cautions and warnings throughout each chapter pinpoint critical information. The carbs need removed and properly cleaned, the jets need to be probed and cleared then a new fuel filter installed to prevent it all from happening again. It is specifically written for the do-it-yourselfer as well as the experienced mechanic. Some head gaskets are supplied with a tacky coating on both surfaces applied at the time of manufacture. Numbered table of contents easy to use so that you can find the information you need fast.
This manual also makes it easy to diagnose and repair problems with your machines electrical system. Subject: 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Yamaha, Mercury and Mariner 4-Stroke Outboard service, maintenance, repair. The manual even includes a section on boating safety. Years: 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969 Models: Apache, Atlas, Royal, Brooklure, Buccaneer, Chief, Chrysler, Clinton, Commando, Commodore, Corsair, Elgin, Eska, Evinrude, Firestone, Gale, Guppy, Hiawatha, Husky, Johnson, McCulloch, Mercury, Mid-Jet, Mono, Neptune, Oliver, Outboard Jet, Scott, Sea Bee, Seagull, Sea King, Sears, Sovereign, Sprite, Tecumseh, West Bend Keywords: mercury, mariner, repair, service, shop, workshop, outboard, marine, boat, 2 cycle, manual, book, guide lower, unit, transom, power head, starter, carburators, points, electronic ignition, look, view, free, pdf, download, 0893300128, 0893300136, 0893300144, 0893300152, 0893300160, 0893300519, 0893300667, 0893300675, 0893300624, 2. The lighting coil checks are the same as those for the pulser and charge coils. In addition, the method of conducting the static check will vary with the specifications that are provided.
However, If a slight water leak should be noticed following completed assembly work and powerhead start up, do not attempt to stop the leak by tightening the head bolts beyond the recommended torque valve. Enlarged inset helps you identify and examine parts in detail. Mercury Outboard Manual Service and repair your motor with a Mercury outboard manual. Published by Seloc Marine with copious photos and illustrations populating its 768 pages, the Yamaha outboard service manual covers every aspect of boat engine repair. Each book contains hundreds of photos with instructions on exactly how to maintain your motor. I would try adjusting the idle control to see if it doesn't help regulate the fuel to the jets.
Simply blowing them out will not fix this problem. Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use. Air fuel mixture screws not properly adjusted. Bold figure number help you quickly match illustrations with instructions. If it were fuel injected, you could have the fuel map adjusted to lean it out under deceleration. Good luck and have a nice day.
Specifications vary by year and model so significantly that it precludes trying to list them in this procedure. A fractured bolt must usually be drilled out and the hole retapped to accommodate an oversize bolt, etc. Furthermore, tightening the bolts, which are case hardened aluminum, may force the bolt beyond its elastic limit and cause the bolt to fracture. This would be Bad news, very bad news indeed. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Dynamic checks are done under different circumstances, with load circuit complete and without load circuit incomplete , again, depending upon the specifications provided by the manufacturer.
Mariners Warehouse is also your source for sales and installation of several yacht specialty products, including: lighted yacht graphics, and Extrun bow thrusters. Multi carburetors out of sync and need to be balanced. The chemicals in the sealer will cause electrolytic action and eat the aluminum faster than you can get to the bank for money to buy a new cylinder block. If it's just a head pipe, you need to get some sort of muffler on it or you'll burn your valves out from a lean condition. These units are new, not remanufactured, which means it has no wear and tear yet.
Each manual provides step-by-step instructions based on the complete disassembly of the machine. Using this repair manual is an inexpensive way to keep your motor working properly. Maintenance and troubleshooting are covered in each manual as well as wiring diagrams. Running rough at low rpm's is usually a sign of too much fuel as well. Therefore, no further sealing agent is required.