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177
FUEL SYSTEM
FUEL SYSTEM TESTS
8
Results:
Normal pressure
•
Perform the
p. 177. Make sure no air leaks or restrictions
exist in the fuel supply hose or boat fuel system.
Low pressure
•
Check pulse hoses and fittings for restrictions.
•
Perform the
p. 177. Make sure no air leaks or restrictions
exist in the fuel supply hose or boat fuel system.
•
Check fuel flow through fuel lift pump. Use fuel
primer bulb to force fuel through pump.
No pressure
•
Check pulse hoses and fittings restrictions.
•
Check fuel flow through fuel lift pump. Use fuel
primer or primer bulb to force fuel through
pump.
•
Momentarily prime or squeeze primer bulb to
check gauge operation.
•
Check pulse hose and fittings for restrictions.
Lift Pump Vacuum Test
Confirm fuel supply to the fuel lift pump.
Temporarily install a vacuum gauge, T-fitting, and
8 in. (20.3 cm) of clear vinyl hose between the fuel
supply hose and fuel lift pump (inlet). Secure con-
nections with tie straps to prevent fuel or air leaks.
IMPORTANT:
Do not use fuel primer bulb, man-
ual fuel primer, or electric fuel pump primer to
restart outboard. A positive pressure in the fuel
supply could damage some vacuum gauges.
START outboard and run at FULL THROTTLE for
at least two minutes. Monitor clear vinyl hose for
the presence of air. Air bubbles indicate a faulty
hose, connection, or fuel tank pick-up. Repair, if
necessary, before proceeding.
There should be no air or vapor bubbles visible in
the clear hose. The maximum inlet fuel vacuum
should not exceed 4 in. Hg. (13.5 kPa) at the inlet
to the fuel lift pump under any operating condi-
tions (IDLE to WOT).
A higher vacuum indicates an excessive restric-
tion in the fuel supply. Repair as needed. Refer to
on p. 35 for fuel sup-
ply component requirements.
Lift Pump Diaphragm Test
Perform this test only if a damaged pump is sus-
pected. This test does not check the performance
of internal fuel pump check valves.
Remove both pulse hoses from the crankcase fit-
tings.
Apply 15 psi (103 kPa) to each of the pulse hoses
of the pump. Replace lift pump if either side of
pump fails to hold pressure.
000243
1.
Pulse fitting
000670
1
Содержание E200DHLSEB
Страница 1: ...Main Menu...
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Страница 190: ...188 FUEL SYSTEM NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 195: ...OILING SYSTEM OIL SUPPLY DIAGRAMS 193 9 3 3 L models 006870 Rear View 6 4 5 3 Top View 1 2...
Страница 196: ...194 OILING SYSTEM OIL SUPPLY DIAGRAMS 3 4 L models 007256 Starboard View Port View...
Страница 197: ...OILING SYSTEM OIL RECIRCULATION DIAGRAMS 195 9 OIL RECIRCULATION DIAGRAMS 004111a 2 4 6 1 3 5...
Страница 208: ...206 OILING SYSTEM NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 248: ...246 POWERHEAD POWERHEAD VIEWS POWERHEAD VIEWS Port Hose Routings 3 3 L models 006951...
Страница 249: ...POWERHEAD POWERHEAD VIEWS 247 11 Starboard Hose Routings 3 3 L models 006952...
Страница 250: ...248 POWERHEAD POWERHEAD VIEWS Port Hose Routings 3 4 L models 007153...
Страница 251: ...POWERHEAD POWERHEAD VIEWS 249 11 Starboard Hose Routings 3 4 L models 007154...
Страница 252: ...250 POWERHEAD POWERHEAD VIEWS Port 3 3 L models 007139...
Страница 253: ...POWERHEAD POWERHEAD VIEWS 251 11 Starboard 3 3 L models 007138...
Страница 254: ...252 POWERHEAD POWERHEAD VIEWS Port 3 4 L models 007143...
Страница 255: ...POWERHEAD POWERHEAD VIEWS 253 11 Starboard 3 4 L models 007144...
Страница 256: ...254 POWERHEAD POWERHEAD VIEWS Front 3 3 L models 007140...
Страница 257: ...POWERHEAD POWERHEAD VIEWS 255 11 Front 3 4 L models 007145...
Страница 258: ...256 POWERHEAD POWERHEAD VIEWS Rear 3 3 L models 007141...
Страница 259: ...POWERHEAD POWERHEAD VIEWS 257 11 Rear 3 4 L models 007142...
Страница 260: ...258 POWERHEAD POWERHEAD VIEWS Top 007146...
Страница 265: ...MIDSECTION SERVICE CHART 263 12 Muffler...
Страница 362: ...360 TRIM AND TILT NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 364: ...S 2...
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Страница 403: ...A B C 5 1 2 3 6 4 5 1 2 3 6 4 5 1 2 3 6 4 DRC6165R MWS Instrument Wiring Harness 1 2 5 1 2 3 6 7 4 8 A B C...
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