View and Download Johnson 2 Stroke 40 HORSEPOWER operator's manual online. 2 Stroke, R, RL. 2 Stroke 40 HORSEPOWER outboard motor pdf manual download. HP Design Features Shaft Year Suffix; Not Applicable: J = Johnson E = Evinrude 1.2 2 2.3 2.5 3 3.3 4 4.5 5 6 7.5 8 9.9 14 15 20 25 28 30 35 40 48 50 55 60 70 75 85 88 90 100 110 112 115 120 130 140 150 175 185 200 225 235 250 275 300 C = Counter Rotation w/ Trim & Tilt E = Electric Start w/Remote Steering F = FICHT Fuel Injection G = Graphite Paint. Johnson 13 HP Outboard Manuals return to top Year Model 1929-32 S-45 Johnson 13.15 HP Outboard Manuals return to top Year Model 1928 P-40 Johnson 13.3 HP Outboard Manuals return to top Year Model 1930-32 SA-50 SE-50 1933 S-65 1934 S-70 Johnson 15 HP Outboard Manuals return to top. Johnson - Evinrude Service Manual Application: 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.
![1997 1997](https://d12swbtw719y4s.cloudfront.net/images/a8MqJK1V/T1uOhxy2Ivs9PKXDpjUy/Evinrude_1.25_2-HP_70_Hp_1990-2001_Service_Repair_Manual_Johnson_Evinrude.jpeg)
Johnson Outboard 90 Hp V4 Service Manual jetta owners manuals 90 hp johnson outboard boat propellers 1981 & newer assessment center johnson/evinrude outboards, 1973-91 repair manual, covers all glide 1990-2001 johnson evinrude outboard service manual - 1 hp to chemistry electrons in atoms guide convert johnson v4 outboard from 90 hp to 115 hp? of the johnson 90 hp outboard motor | ebay parts evinrude / johnson outboard 65 hp to 300 hp service repair 2003 kia evinrude / johnson 48-235 hp ob 73-90 (clymer marine repair guide 90 hp johnson outboard manuals - parts, repair, study johnson evinrude service repair owners manuals - page1 injustice strategy johnson v4 90 hp idling problems page: 1 - iboats training manual epinions.com: read expert reviews on boating and mcgraw hill solutions manuals engine: 1987 johnson 90 hp (90tlcu) - iboats dialog 11 english free download johnson 115 hp v4 outboard repair manual fanuc 0itd download evinrude 90hp ( 90 hp) repair manual 1968 fahr drum parts manual johnson outboard 115 hp v4 service manual subaru owners 90 hp, 1998 johnson 90 hp manuals - diy repair polaris 450 90 hp outboard manuals - motor repair - johnson, mercury, yamaha pdw8200 manual johnson evinrude outboard motor 50-125hp 1958-1972 service audi marine plug wire set for johnson evinrude 90 and tractor 1310 90 hp johnson outboard boat propellers v4 1960 labor economics borjas solutions manual johnson 90 hp v4 misfire and power problem page: yale veracitor 25 service manual johnson outboard 90 hp - johnson outboard forums oldsmobile aurora manual evinrude service manuals online at evinrude engine johnson evinrude | service-repair-workshop-manual.com romeo jtd manual evinrude parts & johnson outboard parts at marineengine.com ion automotive johnson 90 hp v4 - read expert reviews, view sport jet johnson 90 hp v4 1987 - running wot, nice. - youtube 93 yamaha 1300 service johnson / evinrude outboard marine manuals service manuals chillers 1988 90 hp johnson v4 service manual page: 1 4030 x 93 johnson outboard 90 hp service manual
Fuel Pumps
General Information
Fuel Pump Description/Operation
Testing
Troubleshooting Fuel Pump
Fuel Pump Components
Fuel Pump Removal/Installation
Fuel Pump Cleaning, Inspection, Disassembly and Reassembly
Fuel Pump – Cleaning/Inspection
Check Valve Reassembly
Carburetion
Fuel System Troubleshooting
Checking for Restricted Fuel Flow Caused by Anti-Siphon Valves
Fuel System (Carburetor)
Fuel System (Linkage)
Carburetor Adjustments
Initial Starting Adjustment
Low Speed Mixture Adjustment
Carburetor Float Adjustment
Specification Sheet - WME Carburetors
Carburetor Fastener Torques
Settings
Fuel Pump Specifications
Fuel Pump Pressure
Sealants
Idle Speed Adjustment
Main (High Speed) Jet Adjustment
Rejetting Carburetors For High Altitude Operation
Jet Orifice Size/Part Number Chart
Carburetor Removal and Disassembly
Carburetor Disassembly
Cleaning and Inspection
Carburetor Reassembly
Idle Air Screw
Enrichener System
Enrichener Valve Hose Installation
Enrichener Valve Test
Acceleration Pump Fuel Flow Circuit
Fuel Tank
Fuel Tank Components
Fuel Line and Primer Bulb Assembly
Fuel Line Clamp Removal and Installation Quicken 2017 for mac system requirements.
General Information
Fuel Pump Description/Operation
Testing
Troubleshooting Fuel Pump
Fuel Pump Components
Fuel Pump Removal/Installation
Fuel Pump Cleaning, Inspection, Disassembly and Reassembly
Fuel Pump – Cleaning/Inspection
Check Valve Reassembly
Carburetion
Fuel System Troubleshooting
Checking for Restricted Fuel Flow Caused by Anti-Siphon Valves
Fuel System (Carburetor)
Fuel System (Linkage)
Carburetor Adjustments
Initial Starting Adjustment
Low Speed Mixture Adjustment
Carburetor Float Adjustment
Specification Sheet - WME Carburetors
Carburetor Fastener Torques
Settings
Fuel Pump Specifications
Fuel Pump Pressure
Sealants
Idle Speed Adjustment
Main (High Speed) Jet Adjustment
Rejetting Carburetors For High Altitude Operation
Jet Orifice Size/Part Number Chart
Carburetor Removal and Disassembly
Carburetor Disassembly
Cleaning and Inspection
Carburetor Reassembly
Idle Air Screw
Enrichener System
Enrichener Valve Hose Installation
Enrichener Valve Test
Acceleration Pump Fuel Flow Circuit
Fuel Tank
Fuel Tank Components
Fuel Line and Primer Bulb Assembly
Fuel Line Clamp Removal and Installation Quicken 2017 for mac system requirements.
Fuel Pumps
General Information
FUEL PUMP DESCRIPTION/OPERATION
The fuel pump is a crankcase-pressure-operated, diaphragm-
type pump. Crankcase pulsating pressure
(created by the up-and-down movement of piston) is
transferred to fuel pump by way of a passage (hole)
between crankcase and fuel pump.
When piston is in an upward motion, a vacuum is
created in the crankcase, thus pulling in a fuel/air mixture
(from carburetor) into crankcase. This vacuum
also pulls in on the fuel pump diaphragm, thus the inlet
check valve (in fuel pump) is opened and fuel (from
fuel tank) is drawn into fuel pump.
Downward motion of the piston forces the fuel/air mixture
out of the crankcase into the cylinder. This motion
also forces out on the fuel pump diaphragm, which, in
turn, closes the inlet check valve (to keep fuel from returning
to fuel tank) and opens the outlet check valve,
thus forcing fuel to the carburetors.
CHECKING FOR RESTRICTED FUEL FLOW CAUSED
BY ANTI-SIPHON VALVES
While anti-siphon valves may be helpful from a safety
stand-point, they clog with debris, they may be too
small, or they may have too heavy a spring. Summarizing,
the pressure drop across these valves can,
and often does, create operational problems and/or
powerhead damage by restricting fuel to the fuel
pump and carburetor(s). Some symptoms of restricted
(lean) fuel flow, which could be caused by use
of an anti-siphon valve, are:
0001 Loss of fuel pump pressure
0001 Loss of power
0001 High speed surging
0001 Preignition/detonation (piston dome erosion)
0001 Outboard cuts out or hesitates upon acceleration
0001 Outboard runs rough
0001 Outboard quits and cannot be restarted
0001 Outboard will not start
0001 Vapor lock
Since any type of anti-siphon device must be located
between the outboard fuel inlet and fuel tank outlet,
a simple method of checking [if such a device (or bad
fuel) is a problem source] is to operate the outboard
with a separate fuel supply which is known to be
good, such as a remote fuel tank.
If, after using a separate fuel supply, it is found that
the anti-siphon valve is the cause of the problem,
there are 2 solutions to the problem; either (1) remove
the anti-siphon valve or (2) replace it with a solenoidoperated
fuel shutoff valve.
Testing
Install clear fuel hose(s) between fuel pump and carburetor(
s). Run engine, and inspect fuel passing thru
hose(s) for air bubbles. If air bubbles are found, see
“Air Bubbles in Fuel Line,” below. If air bubbles are
NOT found, see “Lack of Fuel Pump Pressure,” continued
on next page.
Troubleshooting Fuel Pump
PROBLEM: AIR BUBBLES IN FUEL LINE
Possible Cause Corrective Action
Low fuel in fuel tank. Fill tank with fuel.
Loose fuel line
connection.
Check and tighten all
connections.
Fuel pump fitting loose. Tighten fitting.
A hole or cut in fuel line. Check condition of all
fuel lines and replace
any found to be bad.
Fuel pump anchor
screw(s) loose.
Tighten all screws
evenly and securely.
Fuel pump gasket(s)
worn out.
Rebuild fuel pump.
PROBLEM: LACK OF FUEL PUMP PRESSURE
Possible Cause Corrective Action
An anti-siphon valve. Read “Checking for
Restricted Fuel Flow,
Caused by Anti-Siphon
Valves” preceding.
Air in fuel line. “Air Bubbles in Fuel
Line”, preceding.
A dirty or clogged fuel
filter.
Clean or replace fuel
filter.
The fuel pickup in fuel
tank clogged or dirty.
Clean or replace pickup.
Worn out fuel pump
diaphragm.
Rebuild fuel pump.
Defective (hole or crack)
check valve(s) in fuel
pump (unlikely).
Rebuild fuel pump.
Broken check valve
retainer.
Rebuild fuel pump.
Pulse hole plugged. Remove fuel pump and
clean out hole.
General Information
FUEL PUMP DESCRIPTION/OPERATION
The fuel pump is a crankcase-pressure-operated, diaphragm-
type pump. Crankcase pulsating pressure
(created by the up-and-down movement of piston) is
transferred to fuel pump by way of a passage (hole)
between crankcase and fuel pump.
When piston is in an upward motion, a vacuum is
created in the crankcase, thus pulling in a fuel/air mixture
(from carburetor) into crankcase. This vacuum
also pulls in on the fuel pump diaphragm, thus the inlet
check valve (in fuel pump) is opened and fuel (from
fuel tank) is drawn into fuel pump.
Downward motion of the piston forces the fuel/air mixture
out of the crankcase into the cylinder. This motion
also forces out on the fuel pump diaphragm, which, in
turn, closes the inlet check valve (to keep fuel from returning
to fuel tank) and opens the outlet check valve,
thus forcing fuel to the carburetors.
CHECKING FOR RESTRICTED FUEL FLOW CAUSED
BY ANTI-SIPHON VALVES
While anti-siphon valves may be helpful from a safety
stand-point, they clog with debris, they may be too
small, or they may have too heavy a spring. Summarizing,
the pressure drop across these valves can,
and often does, create operational problems and/or
powerhead damage by restricting fuel to the fuel
pump and carburetor(s). Some symptoms of restricted
(lean) fuel flow, which could be caused by use
of an anti-siphon valve, are:
0001 Loss of fuel pump pressure
0001 Loss of power
0001 High speed surging
0001 Preignition/detonation (piston dome erosion)
0001 Outboard cuts out or hesitates upon acceleration
0001 Outboard runs rough
0001 Outboard quits and cannot be restarted
0001 Outboard will not start
0001 Vapor lock
Since any type of anti-siphon device must be located
between the outboard fuel inlet and fuel tank outlet,
a simple method of checking [if such a device (or bad
fuel) is a problem source] is to operate the outboard
with a separate fuel supply which is known to be
good, such as a remote fuel tank.
If, after using a separate fuel supply, it is found that
the anti-siphon valve is the cause of the problem,
there are 2 solutions to the problem; either (1) remove
the anti-siphon valve or (2) replace it with a solenoidoperated
fuel shutoff valve.
Testing
Install clear fuel hose(s) between fuel pump and carburetor(
s). Run engine, and inspect fuel passing thru
hose(s) for air bubbles. If air bubbles are found, see
“Air Bubbles in Fuel Line,” below. If air bubbles are
NOT found, see “Lack of Fuel Pump Pressure,” continued
on next page.
Troubleshooting Fuel Pump
PROBLEM: AIR BUBBLES IN FUEL LINE
Possible Cause Corrective Action
Low fuel in fuel tank. Fill tank with fuel.
Loose fuel line
connection.
Check and tighten all
connections.
Fuel pump fitting loose. Tighten fitting.
A hole or cut in fuel line. Check condition of all
fuel lines and replace
any found to be bad.
Fuel pump anchor
screw(s) loose.
Tighten all screws
evenly and securely.
Fuel pump gasket(s)
worn out.
Rebuild fuel pump.
PROBLEM: LACK OF FUEL PUMP PRESSURE
Possible Cause Corrective Action
An anti-siphon valve. Read “Checking for
Restricted Fuel Flow,
Caused by Anti-Siphon
Valves” preceding.
Air in fuel line. “Air Bubbles in Fuel
Line”, preceding.
A dirty or clogged fuel
filter.
Clean or replace fuel
filter.
The fuel pickup in fuel
tank clogged or dirty.
Clean or replace pickup.
Worn out fuel pump
diaphragm.
Rebuild fuel pump.
Defective (hole or crack)
check valve(s) in fuel
pump (unlikely).
Rebuild fuel pump.
Broken check valve
retainer.
Rebuild fuel pump.
Pulse hole plugged. Remove fuel pump and
clean out hole.
![Johnson Johnson](https://www.inboardrepairmanual.com/wp-content/uploads/2016/09/Yamaha-outboard-service-manual.jpg)
Troubleshooting Fuel Pump
(continued)
PROBLEM: LACK OF FUEL PUMP PRESSURE
Possible Cause Corrective Action
Hole in pulse hose
(1 pulse hose).
Replace pulse hose.
Loose pulse hose. Tighten connection.
Boost diaphragm gasket
distorted or out of place.
Check seal between
mating surfaces where
“rib” divides pulse
chamber – gasket must
align with rib; check for
Audi multitronic 01j transmission service repair manual. distorted gasket. Align
or replace gasket if
necessary.
Fuel Pump Components (Design 1)
NOTE: In fuel pump reassembly, remember that respective
diaphragms go against the mating surfaces
of the fuel pump body, and respective gaskets are between
the diaphragms and end caps. Gaskets should
always be replaced on fuel pump assembly.
(continued)
PROBLEM: LACK OF FUEL PUMP PRESSURE
Possible Cause Corrective Action
Hole in pulse hose
(1 pulse hose).
Replace pulse hose.
Loose pulse hose. Tighten connection.
Boost diaphragm gasket
distorted or out of place.
Check seal between
mating surfaces where
“rib” divides pulse
chamber – gasket must
align with rib; check for
Audi multitronic 01j transmission service repair manual. distorted gasket. Align
or replace gasket if
necessary.
Fuel Pump Components (Design 1)
NOTE: In fuel pump reassembly, remember that respective
diaphragms go against the mating surfaces
of the fuel pump body, and respective gaskets are between
the diaphragms and end caps. Gaskets should
always be replaced on fuel pump assembly.
a - Fuel Pump Base
b - Fuel Pump Body
c - Chamber Plate
d - Gasket, Base
e - Fuel Filter – Inline
f - Gasket, Pulse Chamber
g - Diaphragm, Fuel Pump
h - Retainer, Check Valve
i - Check Valve
j - Check Valve Rubber Disc
k - Main Compression Spring End Cap
l - Main Compression Spring
m- Boost Diaphragm
n - Boost Chamber Gasket
o - Boost Compression Spring End Cap
p - Boost Compression Spring
q - Retainer, Check Valve
r - Check Valve
s - Check Valve Rubber Disc
t - Check Valve Assembly
b - Fuel Pump Body
c - Chamber Plate
d - Gasket, Base
e - Fuel Filter – Inline
f - Gasket, Pulse Chamber
g - Diaphragm, Fuel Pump
h - Retainer, Check Valve
i - Check Valve
j - Check Valve Rubber Disc
k - Main Compression Spring End Cap
l - Main Compression Spring
m- Boost Diaphragm
n - Boost Chamber Gasket
o - Boost Compression Spring End Cap
p - Boost Compression Spring
q - Retainer, Check Valve
r - Check Valve
s - Check Valve Rubber Disc
t - Check Valve Assembly
1997 40 Hp Johnson Service Manual Pdf
Carburetion
Fuel System Troubleshooting
Troubles, that are caused by items 1-thru-5, listed below,
may give the impression that a problem exists in
the fuel system:
1. Spark plugs
2. Ignition spark voltage
3. Cylinder compression
4. Reed valves
5. Ignition timing
Troubleshooting Charts
Fuel System Troubleshooting
Troubles, that are caused by items 1-thru-5, listed below,
may give the impression that a problem exists in
the fuel system:
1. Spark plugs
2. Ignition spark voltage
3. Cylinder compression
4. Reed valves
5. Ignition timing
Troubleshooting Charts