T–4
TROUBLE CHECK CHART
OUTBOARD WILL NOT SHUT OFF
OUTBOARD WILL NOT SHUT OFF
OUTBOARD STARTS AND STALLS
OBSERVATION
POSSIBLE CAUSE
PROCEDURE
Outboard starts and
runs, normal
performance while
running
Key switch or wire harness
ground
Check key switch and ground to key switch, refer
to
SYSTEM ANALYSIS
on p. 103 and
ELECTRICAL AND IGNITION
on p. 123
Stop circuit wiring
Check
EMM
LED indicators. Check wire harness
(black/yellow) and key/stop switch(s).
EMM
failure
Check
EMM
LED indicators and eliminate stop
circuit as possible cause. Stop wire (black/yellow)
has 4.0 VDC from
EMM
with key on or outboard
running.
OBSERVATION
POSSIBLE CAUSE
PROCEDURE
Outboard may not run
for more than a few
seconds
Faulty wiring, connections, or
grounds
Check all grounds, connections, and wiring
Incorrect, fouled, or worn spark
plugs
Replace spark plugs
Low or no alternator output
(55 V)
Check voltage on 55 V circuits, refer to
SYSTEM
ANALYSIS
on p. 103 and
ELECTRICAL AND
IGNITION
on p. 123
Capacitor or 55 V circuit wiring
Check capacitor and 55 V circuit, refer to
SYSTEM ANALYSIS
on p. 103 and
ELECTRICAL AND IGNITION
on p. 123
Contaminated or poor fuel
quality
Check or replace fuel supply
Low fuel pressure
Check pressure, refer to
FUEL SYSTEM
on
p. 155
Air in fuel system
Check for air in fuel supply manifold, refer to
FUEL SYSTEM
on p. 155 (vapor separator
venting and fuel supply)
Fuel supply restricted
Check primer bulb, anti-siphon valve, and fuel
pick-up, check for fuel system air leaks
Injector electrical circuit or
control function
Check voltage at injectors, refer to
SYSTEM
ANALYSIS
on p. 103
Restricted or leaking fuel
injector(s)
Check injectors, refer to
FUEL SYSTEM
on p. 155
EMM
program, timing, or
operation
Check
EMM
program and timing;
check injector
coefficients; and monitor injector control wires and
ignition primary outputs
Weak or erratic ignition output
Check ignition, refer to
SYSTEM ANALYSIS
on
p. 103 and
ELECTRICAL AND IGNITION
on
p. 123
Internal powerhead damage
Check and repair as needed
Summary of Contents for E-tec 75 HP
Page 1: ......
Page 233: ...233 POWERHEAD POWERHEAD VIEWS 10 POWERHEAD VIEWS Port Short Block Starboard Short Block ...
Page 234: ...234 POWERHEAD POWERHEAD VIEWS Port Dressed Powerhead Starboard Dressed Powerhead ...
Page 235: ...235 POWERHEAD POWERHEAD VIEWS 10 Front ...
Page 236: ...236 POWERHEAD POWERHEAD VIEWS Rear ...
Page 237: ...237 POWERHEAD POWERHEAD VIEWS 10 Top ...
Page 298: ...S 2 ...
Page 344: ......
