Johnson 140 Hp Outboard Manual
2021年9月5日Download here: http://gg.gg/vwoyk
*140 Hp Outboard Motor
*Johnson 140 Hp Outboard Manual Model
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. 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.
1973 1990 Johnson Evinrude 2 to 40 HP Service Manual Outboard
Johnson - Evinrude Service Manual Application: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990 Outboard For 2, 2.5, 4, 4.5, 5, 6, 7.5, 8, 9.5, 9.9, 15, 18, 20, 25, 28, 30, 35, 40 HP (Horsepower - Horse Power) Outboards Marine Engine Johnson/Evinrude 2Stroke 2-Stroke Two Stroke & 4Stroke 4-Stroke Four Stroke models.
1973-1990 Johnson Evinrude Service Manual 48 235 HP Outboard & Sea Drives
Johnson - Evinrude Service Manual Application: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990 Outboard & Sea Drive (Sea Drives) For 48 50 55 60 65 70 75 85 88 90 100 110 115 120 135 140 150 175 185 200 225 & 235 HP (Horsepower - Horse Power) Outboard & Sea Drive Marine Engine Johnson/Evinrude 2Stroke 2-Stroke Two Stroke & 4Stroke 4-Stroke Four Stroke models.
1973-1991 Johnson Evinrude Outboard 60 HP-235 HP Workshop Manual 2-STROKE
1973-1991 Johnson Evinrude Service Repair Manual Application: 60 Hp, 3 cyl 1986-1991 - 65 Hp, 3 cyl 1973 - 70 Hp, 3 cyl 1974-1991 - 75 Hp, 3 cyl 1975-1985 - 85 Hp, V4 1973-1980 - 90 Hp, V4 1981-1991 - 100 Hp, V4 1979 1980 - 115 Hp, V4 1973-1984 - 115 Hp, V4 1990 1991 - 120 Hp, V4 1985-1991 - 135 Hp, V4 1973-1976 - 140 Hp, V4 1977-1991 - 150 Hp, V6 1978-1991 - 175 Hp, V6 1977-1983 - 175 Hp, V6 1986-1991 - 185 Hp, V6 1984 1985 - 200 Hp, V6 1976-1983 - 200 Hp, V6 1986-1991 - 225 Hp, V6 1986-1991 - 235 Hp, V6 1978-1985
1990-2001 Johnson-Evinrude 1 HP To 70 HP Service Manual 2-Stroke & 4 Stroke
Johnson - Evinrude Service Manual Application: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 Outboard For 1-Hp, 2-HP, 2.3-HP, 3.3-Hp, 3.5-HP, 4-HP, 5-HP, 6-HP, 6.5-HP, 8-HP, 9.9-HP, 10-HP, 14-HP, 15-HP, 18 JET, 20-HP, 25-HP, 25D, 28-HP, 30-HP 35-HP, 40-HP, 45-HP, 50-HP, 55-HP, 60-HP, 65-HP, 70-HP (Horsepower - Horse Power) Outboards Marine Engine Johnson/Evinrude 2Stroke 2-Stroke Two Stroke & 4Stroke 4-Stroke Four Stroke 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 models.
1992-2001 Johnson Evinrude 65-300 HP Service Manual Application:
4-CYLINDER ENGINE/MOTOR MODELS/YEARS COVERED: 65HP-65 HP Jet 1992, 1993, 1994 & 1995 - 80HP-80 HP Jet 1992, 1993, 1994, 1995, 1996 & 1997 - 85HP-85 HP 1992 to1995 - 88HP-88 HP 1992, 1993, 1994, 1995 & 1996 - 90HP-90 HP 1992, 1993, 1994, 1995, 1996, 1997 & 1998 - 100HP-100 HP 1992 to 1997 - 112HP-112 HP SPL 1994 to 1996 - 115HP-115 HP 1992, 1993, 1994, 1995, 1996, 1997 & 1998 - 75HP-75 HP 2001 - 80HP-80 HP JET 1998, 1999, 2000 & 2001 - 90HP 90 1995, 1996, 1997, 1998, 1999, 2000 & 2001 - 100HP 100 1998 to 2001 - 105HP 105 Com 1997 to 2001 - 115HP 115 1995 to 2001 - 120HP 120 1992 to 1994 - 130HP 130 1994 to 2000 - 135HP 135 2001 - 140Hp 140 1992 to 1994
6-CYLINDER ENGINE/MOTOR MODELS/YEARS COVERED: - 105HP 105 JET 1992-2001 - 135HP 135 2001 - 150HP 150 1992-2001 - 175HP 175 1992-2001 - 185HP 185 1992-1994 - 200HP 200 1992-2001 - 225HP 225 2001 - 250HP 250 1999-2001
8-CYLINDER ENGINE/MOTOR MODELS/YEARS COVERED: 250HP 250 1992-1998 - 300HP 300 1992-1995
*1977 Johnson 140 HP. Johnson outboard motor was made for the saltwater environment. The piston displacement is 99.6. The bore and stroke are 3.5’ and 2.59’ respectively. This outboard has starter of the electric type and power steering as well. Your engine’s RPM range is important in choosing the right propeller for a.
*JOHNSON EVINRUDE OUTBOARD SERVICE MANUALS DOWNLOAD: 2007 Johnson Evinrude 115, 150, 175, 200 HP (60 Degrees V Models) Outboards Repair Service Manual. 2004 Johnson Evinrude 9.9HP, 15HP, 25HP, 30HP 2-Stroke Outboards Service Repair Manual. 1979 Johnson 70 HP Model (70EL79) and 75 HP Models (75ER79, 75ELR79) Outboards Service Repair Manual.
The JOHNSON 140 HP 1977 has proven popular over the years. Below are the factory original JOHNSON 140 HP 1977 owners and service repair manuals to choose from. In addition, this page has links to the electrical wiring and parts manuals for the JOHNSON 140 HP 1977. These are the exact manuals your JOHNSON dealer has and are the best money can buy.
Service Manual, Repair Manual, Workshop Manual, Engine Repair Guide, Outboard Motors, Johnson 4-Stroke Engine, Evinrude 2 Stroke Engines Rebuild Kit, Engine Overhaul, Years 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2007, Engine Will Not Start, Engine Will Crank But Not Turn Over, Engine Will Stall After Starting, Outboard Motor Grinds When In Gear, Motor Smokes Blue Smoke, Excessive White Smoke, Black Smoke Puring Out Of Engine, Outboar Engine Overheating, Motor Overheats, Specifications, Specs, Eigne Specs, Spark Plug, Spark Plug Gap, Which Spark Plugs Type, Part, Parts Online, Rebuilt Parts, Oem Parts, Parts Location
Fuel PumpsGeneral InformationFuel Pump Description/OperationTestingTroubleshooting Fuel Pump Fuel Pump ComponentsFuel Pump Removal/InstallationFuel Pump Cleaning, Inspection, Disassembly and ReassemblyFuel Pump – Cleaning/Inspection Check Valve Reassembly CarburetionFuel System TroubleshootingChecking for Restricted Fuel Flow Caused by Anti-Siphon ValvesFuel System (Carburetor)Fuel System (Linkage)Carburetor AdjustmentsInitial Starting Adjustment Low Speed Mixture AdjustmentCarburetor Float AdjustmentSpecification Sheet - WME Carburetors Carburetor Fastener TorquesSettingsFuel Pump Specifications Fuel Pump PressureSealantsIdle Speed AdjustmentMain (High Speed) Jet AdjustmentRejetting Carburetors For High Altitude OperationJet Orifice Size/Part Number ChartCarburetor Removal and DisassemblyCarburetor DisassemblyCleaning and InspectionCarburetor ReassemblyIdle Air ScrewEnrichener SystemEnrichener Valve Hose Installation Enrichener Valve TestAcceleration Pump Fuel Flow Circuit Fuel TankFuel Tank ComponentsFuel Line and Primer Bulb Assembly Fuel Line Clamp Removal and Installation
Fuel PumpsGeneral InformationFUEL PUMP DESCRIPTION/OPERATIONThe fuel pump is a crankcase-pressure-operated, diaphragm-type pump. Crankcase pulsating pressure(created by the up-and-down movement of piston) istransferred to fuel pump by way of a passage (hole)between crankcase and fuel pump.When piston is in an upward motion, a vacuum iscreated in the crankcase, thus pulling in a fuel/air mixture(from carburetor) into crankcase. This vacuumalso pulls in on the fuel pump diaphragm, thus the inletcheck valve (in fuel pump) is opened and fuel (fromfuel tank) is drawn into fuel pump.Downward motion of the piston forces the fuel/air mixtureout of the crankcase into the cylinder. This motionalso forces out on the fuel pump diaphragm, which, inturn, closes the inlet check valve (to keep fuel from returningto fuel tank) and opens the outlet check valve,thus forcing fuel to the carburetors.CHECKING FOR RESTRICTED FUEL FLOW CAUSEDBY ANTI-SIPHON VALVESWhile anti-siphon valves may be helpful from a safetystand-point, they clog with debris, they may be toosmall, or they may have too heavy a spring. Summarizing,the pressure drop across these valves can,and often does, create operational problems and/orpowerhead damage by restricting fuel to the fuelpump and carburetor(s). Some symptoms of restricted(lean) fuel flow, which could be caused by useof an anti-siphon valve, are:0001 Loss of fuel pump pressure0001 Loss of power0001 High speed surging0001 Preignition/detonation (piston dome erosion)0001 Outboard cuts out or hesitates upon acceleration0001 Outboard runs rough0001 Outboard quits and cannot be restarted0001 Outboard will not start0001 Vapor lockSince any type of anti-siphon device must be locatedbetween the outboard fuel inlet and fuel tank outlet,a simple method of checking [if such a device (or badfuel) is a problem source] is to operate the outboardwith a separate fuel supply which is known to begood, such as a remote fuel tank.If, after using a separate fuel supply, it is found thatthe anti-siphon valve is the cause of the problem,there are 2 solutions to the problem; either (1) removethe anti-siphon valve or (2) replace it with a solenoidoperatedfuel shutoff valve.TestingInstall clear fuel hose(s) between fuel pump and carburetor(s). Run engine, and inspect fuel passing thruhose(s) for air bubbles. If air bubbles are found, see“Air Bubbles in Fuel Line,” below. If air bubbles areNOT found, see “Lack of Fuel Pump Pressure,” continuedon next page.Troubleshooting Fuel PumpPROBLEM: AIR BUBBLES IN FUEL LINEPossible Cause Corrective ActionLow fuel in fuel tank. Fill tank with fuel.Loose fuel lineconnection.Check and tighten allconnections.Fuel pump fitting loose. Tighten fitting.A hole or cut in fuel line. Check condition of allfuel lines and replaceany found to be bad.Fuel pump anchorscrew(s) loose.Tighten all screwsevenly and securely.Fuel pump gasket(s)worn out.Rebuild fuel pump.PROBLEM: LACK OF FUEL PUMP PRESSUREPossible Cause Corrective ActionAn anti-siphon valve. Read “Checking forRestricted Fuel Flow,Caused by Anti-SiphonValves” preceding.Air in fuel line. “Air Bubbles in FuelLine”, preceding.A dirty or clogged fuelfilter.Clean or replace fuelfilter.The fuel pickup in fueltank clogged or dirty.Clean or replace pickup.Worn out fuel pumpdiaphragm.Rebuild fuel pump.Defective (hole or crack)check valve(s) in fuelpump (unlikely).Rebuild fuel pump.Broken check valveretainer.Rebuild fuel pump.Pulse hole plugged. Remove fuel pump and clean out hole.140 Hp Outboard Motor
Troubleshooting Fuel Pump(continued)PROBLEM: LACK OF FUEL PUMP PRESSUREPossible Cause Corrective ActionHole in pulse hose(1 pulse hose).Replace pulse hose.Loose pulse hose. Tighten connection.Boost diaphragm gasketdistorted or out of place.Check seal betweenmating surfaces where“rib” divides pulsechamber – gasket mustalign with rib; check fordistorted gasket. Alignor replace gasket ifnecessary.Fuel Pump Components (Design 1)NOTE: In fuel pump reassembly, remember that respectivediaphragms go against the mating surfacesof the fuel pump body, and respective gaskets are betweenthe diaphragms and end caps. Gaskets shouldalways be replaced on fuel pump assembly.
a - Fuel Pump Baseb - Fuel Pump Bodyc - Chamber Plated - Gasket, Basee - Fuel Filter – Inlinef - Gasket, Pulse Chamberg - Diaphragm, Fuel Pumph - Retainer, Check Valvei - Check Valvej - Check Valve Rubber Disck - Main Compression Spring End Capl - Main Compression Springm- Boost Diaphragmn - Boost Chamber Gasketo - Boost Compression Spring End Capp - Boost Compression Springq - Retainer, Check Valver - Check Valves - Check Valve Rubber Disct - Check Valve AssemblyJohnson 140 Hp Outboard Manual Model
CarburetionFuel System TroubleshootingTroubles, that are caused by items 1-thru-5, listed below,may give the impression that a problem exists inthe fuel system:1. Spark plugs2. Ignition spark voltage3. Cylinder compression4. Reed valves5. Ignition timingTroubleshooting Charts
Download here: http://gg.gg/vwoyk
https://diarynote.indered.space
*140 Hp Outboard Motor
*Johnson 140 Hp Outboard Manual Model
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. 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.
1973 1990 Johnson Evinrude 2 to 40 HP Service Manual Outboard
Johnson - Evinrude Service Manual Application: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990 Outboard For 2, 2.5, 4, 4.5, 5, 6, 7.5, 8, 9.5, 9.9, 15, 18, 20, 25, 28, 30, 35, 40 HP (Horsepower - Horse Power) Outboards Marine Engine Johnson/Evinrude 2Stroke 2-Stroke Two Stroke & 4Stroke 4-Stroke Four Stroke models.
1973-1990 Johnson Evinrude Service Manual 48 235 HP Outboard & Sea Drives
Johnson - Evinrude Service Manual Application: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990 Outboard & Sea Drive (Sea Drives) For 48 50 55 60 65 70 75 85 88 90 100 110 115 120 135 140 150 175 185 200 225 & 235 HP (Horsepower - Horse Power) Outboard & Sea Drive Marine Engine Johnson/Evinrude 2Stroke 2-Stroke Two Stroke & 4Stroke 4-Stroke Four Stroke models.
1973-1991 Johnson Evinrude Outboard 60 HP-235 HP Workshop Manual 2-STROKE
1973-1991 Johnson Evinrude Service Repair Manual Application: 60 Hp, 3 cyl 1986-1991 - 65 Hp, 3 cyl 1973 - 70 Hp, 3 cyl 1974-1991 - 75 Hp, 3 cyl 1975-1985 - 85 Hp, V4 1973-1980 - 90 Hp, V4 1981-1991 - 100 Hp, V4 1979 1980 - 115 Hp, V4 1973-1984 - 115 Hp, V4 1990 1991 - 120 Hp, V4 1985-1991 - 135 Hp, V4 1973-1976 - 140 Hp, V4 1977-1991 - 150 Hp, V6 1978-1991 - 175 Hp, V6 1977-1983 - 175 Hp, V6 1986-1991 - 185 Hp, V6 1984 1985 - 200 Hp, V6 1976-1983 - 200 Hp, V6 1986-1991 - 225 Hp, V6 1986-1991 - 235 Hp, V6 1978-1985
1990-2001 Johnson-Evinrude 1 HP To 70 HP Service Manual 2-Stroke & 4 Stroke
Johnson - Evinrude Service Manual Application: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 Outboard For 1-Hp, 2-HP, 2.3-HP, 3.3-Hp, 3.5-HP, 4-HP, 5-HP, 6-HP, 6.5-HP, 8-HP, 9.9-HP, 10-HP, 14-HP, 15-HP, 18 JET, 20-HP, 25-HP, 25D, 28-HP, 30-HP 35-HP, 40-HP, 45-HP, 50-HP, 55-HP, 60-HP, 65-HP, 70-HP (Horsepower - Horse Power) Outboards Marine Engine Johnson/Evinrude 2Stroke 2-Stroke Two Stroke & 4Stroke 4-Stroke Four Stroke 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 models.
1992-2001 Johnson Evinrude 65-300 HP Service Manual Application:
4-CYLINDER ENGINE/MOTOR MODELS/YEARS COVERED: 65HP-65 HP Jet 1992, 1993, 1994 & 1995 - 80HP-80 HP Jet 1992, 1993, 1994, 1995, 1996 & 1997 - 85HP-85 HP 1992 to1995 - 88HP-88 HP 1992, 1993, 1994, 1995 & 1996 - 90HP-90 HP 1992, 1993, 1994, 1995, 1996, 1997 & 1998 - 100HP-100 HP 1992 to 1997 - 112HP-112 HP SPL 1994 to 1996 - 115HP-115 HP 1992, 1993, 1994, 1995, 1996, 1997 & 1998 - 75HP-75 HP 2001 - 80HP-80 HP JET 1998, 1999, 2000 & 2001 - 90HP 90 1995, 1996, 1997, 1998, 1999, 2000 & 2001 - 100HP 100 1998 to 2001 - 105HP 105 Com 1997 to 2001 - 115HP 115 1995 to 2001 - 120HP 120 1992 to 1994 - 130HP 130 1994 to 2000 - 135HP 135 2001 - 140Hp 140 1992 to 1994
6-CYLINDER ENGINE/MOTOR MODELS/YEARS COVERED: - 105HP 105 JET 1992-2001 - 135HP 135 2001 - 150HP 150 1992-2001 - 175HP 175 1992-2001 - 185HP 185 1992-1994 - 200HP 200 1992-2001 - 225HP 225 2001 - 250HP 250 1999-2001
8-CYLINDER ENGINE/MOTOR MODELS/YEARS COVERED: 250HP 250 1992-1998 - 300HP 300 1992-1995
*1977 Johnson 140 HP. Johnson outboard motor was made for the saltwater environment. The piston displacement is 99.6. The bore and stroke are 3.5’ and 2.59’ respectively. This outboard has starter of the electric type and power steering as well. Your engine’s RPM range is important in choosing the right propeller for a.
*JOHNSON EVINRUDE OUTBOARD SERVICE MANUALS DOWNLOAD: 2007 Johnson Evinrude 115, 150, 175, 200 HP (60 Degrees V Models) Outboards Repair Service Manual. 2004 Johnson Evinrude 9.9HP, 15HP, 25HP, 30HP 2-Stroke Outboards Service Repair Manual. 1979 Johnson 70 HP Model (70EL79) and 75 HP Models (75ER79, 75ELR79) Outboards Service Repair Manual.
The JOHNSON 140 HP 1977 has proven popular over the years. Below are the factory original JOHNSON 140 HP 1977 owners and service repair manuals to choose from. In addition, this page has links to the electrical wiring and parts manuals for the JOHNSON 140 HP 1977. These are the exact manuals your JOHNSON dealer has and are the best money can buy.
Service Manual, Repair Manual, Workshop Manual, Engine Repair Guide, Outboard Motors, Johnson 4-Stroke Engine, Evinrude 2 Stroke Engines Rebuild Kit, Engine Overhaul, Years 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2007, Engine Will Not Start, Engine Will Crank But Not Turn Over, Engine Will Stall After Starting, Outboard Motor Grinds When In Gear, Motor Smokes Blue Smoke, Excessive White Smoke, Black Smoke Puring Out Of Engine, Outboar Engine Overheating, Motor Overheats, Specifications, Specs, Eigne Specs, Spark Plug, Spark Plug Gap, Which Spark Plugs Type, Part, Parts Online, Rebuilt Parts, Oem Parts, Parts Location
Fuel PumpsGeneral InformationFuel Pump Description/OperationTestingTroubleshooting Fuel Pump Fuel Pump ComponentsFuel Pump Removal/InstallationFuel Pump Cleaning, Inspection, Disassembly and ReassemblyFuel Pump – Cleaning/Inspection Check Valve Reassembly CarburetionFuel System TroubleshootingChecking for Restricted Fuel Flow Caused by Anti-Siphon ValvesFuel System (Carburetor)Fuel System (Linkage)Carburetor AdjustmentsInitial Starting Adjustment Low Speed Mixture AdjustmentCarburetor Float AdjustmentSpecification Sheet - WME Carburetors Carburetor Fastener TorquesSettingsFuel Pump Specifications Fuel Pump PressureSealantsIdle Speed AdjustmentMain (High Speed) Jet AdjustmentRejetting Carburetors For High Altitude OperationJet Orifice Size/Part Number ChartCarburetor Removal and DisassemblyCarburetor DisassemblyCleaning and InspectionCarburetor ReassemblyIdle Air ScrewEnrichener SystemEnrichener Valve Hose Installation Enrichener Valve TestAcceleration Pump Fuel Flow Circuit Fuel TankFuel Tank ComponentsFuel Line and Primer Bulb Assembly Fuel Line Clamp Removal and Installation
Fuel PumpsGeneral InformationFUEL PUMP DESCRIPTION/OPERATIONThe fuel pump is a crankcase-pressure-operated, diaphragm-type pump. Crankcase pulsating pressure(created by the up-and-down movement of piston) istransferred to fuel pump by way of a passage (hole)between crankcase and fuel pump.When piston is in an upward motion, a vacuum iscreated in the crankcase, thus pulling in a fuel/air mixture(from carburetor) into crankcase. This vacuumalso pulls in on the fuel pump diaphragm, thus the inletcheck valve (in fuel pump) is opened and fuel (fromfuel tank) is drawn into fuel pump.Downward motion of the piston forces the fuel/air mixtureout of the crankcase into the cylinder. This motionalso forces out on the fuel pump diaphragm, which, inturn, closes the inlet check valve (to keep fuel from returningto fuel tank) and opens the outlet check valve,thus forcing fuel to the carburetors.CHECKING FOR RESTRICTED FUEL FLOW CAUSEDBY ANTI-SIPHON VALVESWhile anti-siphon valves may be helpful from a safetystand-point, they clog with debris, they may be toosmall, or they may have too heavy a spring. Summarizing,the pressure drop across these valves can,and often does, create operational problems and/orpowerhead damage by restricting fuel to the fuelpump and carburetor(s). Some symptoms of restricted(lean) fuel flow, which could be caused by useof an anti-siphon valve, are:0001 Loss of fuel pump pressure0001 Loss of power0001 High speed surging0001 Preignition/detonation (piston dome erosion)0001 Outboard cuts out or hesitates upon acceleration0001 Outboard runs rough0001 Outboard quits and cannot be restarted0001 Outboard will not start0001 Vapor lockSince any type of anti-siphon device must be locatedbetween the outboard fuel inlet and fuel tank outlet,a simple method of checking [if such a device (or badfuel) is a problem source] is to operate the outboardwith a separate fuel supply which is known to begood, such as a remote fuel tank.If, after using a separate fuel supply, it is found thatthe anti-siphon valve is the cause of the problem,there are 2 solutions to the problem; either (1) removethe anti-siphon valve or (2) replace it with a solenoidoperatedfuel shutoff valve.TestingInstall clear fuel hose(s) between fuel pump and carburetor(s). Run engine, and inspect fuel passing thruhose(s) for air bubbles. If air bubbles are found, see“Air Bubbles in Fuel Line,” below. If air bubbles areNOT found, see “Lack of Fuel Pump Pressure,” continuedon next page.Troubleshooting Fuel PumpPROBLEM: AIR BUBBLES IN FUEL LINEPossible Cause Corrective ActionLow fuel in fuel tank. Fill tank with fuel.Loose fuel lineconnection.Check and tighten allconnections.Fuel pump fitting loose. Tighten fitting.A hole or cut in fuel line. Check condition of allfuel lines and replaceany found to be bad.Fuel pump anchorscrew(s) loose.Tighten all screwsevenly and securely.Fuel pump gasket(s)worn out.Rebuild fuel pump.PROBLEM: LACK OF FUEL PUMP PRESSUREPossible Cause Corrective ActionAn anti-siphon valve. Read “Checking forRestricted Fuel Flow,Caused by Anti-SiphonValves” preceding.Air in fuel line. “Air Bubbles in FuelLine”, preceding.A dirty or clogged fuelfilter.Clean or replace fuelfilter.The fuel pickup in fueltank clogged or dirty.Clean or replace pickup.Worn out fuel pumpdiaphragm.Rebuild fuel pump.Defective (hole or crack)check valve(s) in fuelpump (unlikely).Rebuild fuel pump.Broken check valveretainer.Rebuild fuel pump.Pulse hole plugged. Remove fuel pump and clean out hole.140 Hp Outboard Motor
Troubleshooting Fuel Pump(continued)PROBLEM: LACK OF FUEL PUMP PRESSUREPossible Cause Corrective ActionHole in pulse hose(1 pulse hose).Replace pulse hose.Loose pulse hose. Tighten connection.Boost diaphragm gasketdistorted or out of place.Check seal betweenmating surfaces where“rib” divides pulsechamber – gasket mustalign with rib; check fordistorted gasket. Alignor replace gasket ifnecessary.Fuel Pump Components (Design 1)NOTE: In fuel pump reassembly, remember that respectivediaphragms go against the mating surfacesof the fuel pump body, and respective gaskets are betweenthe diaphragms and end caps. Gaskets shouldalways be replaced on fuel pump assembly.
a - Fuel Pump Baseb - Fuel Pump Bodyc - Chamber Plated - Gasket, Basee - Fuel Filter – Inlinef - Gasket, Pulse Chamberg - Diaphragm, Fuel Pumph - Retainer, Check Valvei - Check Valvej - Check Valve Rubber Disck - Main Compression Spring End Capl - Main Compression Springm- Boost Diaphragmn - Boost Chamber Gasketo - Boost Compression Spring End Capp - Boost Compression Springq - Retainer, Check Valver - Check Valves - Check Valve Rubber Disct - Check Valve AssemblyJohnson 140 Hp Outboard Manual Model
CarburetionFuel System TroubleshootingTroubles, that are caused by items 1-thru-5, listed below,may give the impression that a problem exists inthe fuel system:1. Spark plugs2. Ignition spark voltage3. Cylinder compression4. Reed valves5. Ignition timingTroubleshooting Charts
Download here: http://gg.gg/vwoyk
https://diarynote.indered.space
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