This Johnson Evinrude repair manual covers all 1973-1989 Johnson Evinrude 1.25 to 60 HP, 1- and 2-cylinder, 2-stroke models.
Step-by-step illustrated keyed procedures guide you through every conceivable job possible, including all adjustments necessary. Perfect for do-it-yourselfers, professional mechanics, or students.
Book Excerpt: 1973-1989 Johnson Evinrude Outboard Repair Manual 1.25-60 HP
You can compare the major components of an outboard with the engine and drivetrain of your car or truck. In doing so, the powerhead is the equivalent of the engine and the gear case is the equivalent of your drivetrain (the transmission/transaxle).
The powerhead is the assembly that produces the power necessary to move the vehicle, while the gear case is the assembly that transmits that power via gears, shafts and a propeller (instead of tires).
Speaking in this manner, the powerhead is the "engine" or "motor" portion of your outboard. It is an assembly of long-life components that are protected through proper maintenance.
Lubrication, the use of high-quality 2-stroke oil and proper fuel/oil ratios are the most important ways to preserve powerhead condition. Similarly, proper tune-ups that help maintain proper air/fuel mixture ratios and prevent pinging, knocking or other potential damaging operating conditions are the next best way to preserve your motor.
But, even given the best of conditions, components in a motor begin wearing the first time a motor is started and will continue to do so over the life of the powerhead.
Eventually, all powerheads will require some repair. The particular broken or worn component, plus the age and overall condition of the motor may help dictate whether a small repair or a major overhaul is warranted.
The complexity of the job will vary with 2 major factors. As much as you can generalize about mechanical work
The age of the motor (the older OR less well maintained the motor is) the more difficult the repair.
The larger and more complex the motor, the more difficult the repair.
Again, these are generalizations and, working carefully, a skilled do-it-yourself boater can disassemble and repair a 2hp or 60hp powerhead, as well as a seasoned professional. But both DIYers and professionals must know there limits.
These days, many professionals will leave portions of machine work (from cylinder block and piston disassembly, cleaning and inspecting to honing and assembly up to a machinist).
This is not because they are not capable of the task, but because that's what a machinist does day in and day out. A machinist is naturally going to be more experienced (and efficient) with the procedures.
Pick up this high quality SELOC repair manual today so you can have your boat ready for the weekend!
Subject: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989 Johnson Evinrude Outboard 1.25-60 HP service, maintenance, and repair procedures.
ISBN-10: 089330008X | ISBN-13: 9780893300081 | Seloc 1302