73 25 Hp Johnson Outboard Manual
Evinrude Johnson Outboard Service and Repair Manual This Seloc outboard repair manual covers 1.25 to 60 horsepower Evinrude Johnson 2 stroke marine motors for the years 1973-1989 with 1 or 2 cylinder engines. The Evinrude Outboard Service Manual Applies to the Following Years: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989 Seloc marine manuals can save you money on maintenance and repair costs. Step-by-step procedures and detailed illustrations guide you through every job, from routine maintenance and troubleshooting, all the way to complete teardown & rebuild of the marine motor. Only Seloc manuals include Skill level Ratings (1 - 4 wrenches) based upon the degree of difficulty along with Special Tool icons where a OEM or electronic testing tool is required to perform the specified procedure.
The Johnson-Evinrude Workshop manual downloads for the above listed models describes the service procedures for the complete vehicle. Follow the Maintenance Schedule recommendations to ensure that the outboard is in peak operating condition.
Search by model number, brand, year and horsepower to find the service manual/operators guide that fits your exact Evinrude or Johnson outboard motor. Search by model number, brand, year and horsepower to find the service manual/operators guide that fits your exact Evinrude or Johnson outboard motor. Johnson Outboard 1973 Forum Topics. Johnson Parts Johnson Repair Manual Powerheads. 25 HP 28 HP 30 HP 35 HP 40 HP.
Performing the scheduled maintenance is very important. It compensates for the initial wear that occurs during the life of the outboard motor. All chapters in the Workshop Manual apply to the whole vehicle and illustrates procedures for removal/installation of components that are in detailed step-by-step fashion. Most all Workshop manual chapters start with an assembly or system illustration, diagrams, exploded parts view, pictures, service information and troubleshooting for the section. The subsequent pages give detailed procedures.
PROBLEM 1: ENGINE TURNS OVER BUT WILL NOT START OR STARTS HARD WHEN COLD Possible Cause Corrective Action Improper starting procedure. Check procedure, as outlined in “Operation and Maintenance Manual.” Fuel tank empty; improperly mixed fuel; contaminants (water, dirt, etc.) in fuel. Check fuel in fuel tank and replace or add. Fuel tank air vent closed or restricted. Air vent must be open and free from contaminants.
A pinched or restricted fuel line. Check, and replace as needed. Dirty or restricted fuel filter.
Check, replace or clean. Enrichener valve not operating. Check enrichener system.
(Refer to “Enrichener System” following.) An inlet needle (in carburetor) that is stuck open or closed. (A needle stuck open, will cause a flooding condition. A needle stuck closed, will prevent fuel from entering carburetor.) Remove, clean, or replace. Anti-Siphon valve restricting fuel flow. Refer to “Checking for Restricted Fuel Flow caused by Anti-Siphon Valves”, following. 2016 Infiniti G35 Service Manual. Mazak Mill Operating Manual.
See “Checking for Restricted Fuel Flow caused by Anti-Siphon Valves”, page 3A-1. PROBLEM: ENGINE FLOODS Possible Cause Corrective Action Dirt or foreign particles are preventing inlet needle from seating. Flush out inlet seat and clean inlet needle. Worn inlet needle. Punctured float. Incorrect float setting. PROBLEM: ENGINE RUNS TOO LEAN Possible Cause Corrective Action Carburetor is loose.
Air leaks past mixing chamber cover. Tighten bolts securely. Tighten cover or replace gasket. Fuel level too low. Reset float level. Clogged high speed jet. Check and clean.
Restricted fuel flow to carburetor. Check fuel lines and filter(s) 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 richener.
Air leakage into fuel system. Check fuel line connections, hose clamps, fuel pump, and fuel outlet tube (located in fuel tank) for loose fittings. Anti-Siphon valve restricting fuel flow. Refer to “Checking for restricted fuel flow caused by Anti-Siphon valves.” PROBLEM: ENGINE RUNS TOO RICH Possible Cause Corrective Action Fuel level too high. Reset float to correct level. Carburetor floods. See preceding “Engine Floods” Idle nozzle air holes plugged.