SELVA MARINE Wahoo 15 Service Manual page 278

TRBL
SHTG
Symptom 1: Engine does not start (engine cranks)
Symptom 2
Spark plug does not
spark
Fuel not supplied
Low compression
pressure
9-3
Troubleshooting
Cause 1
Spark plug malfunc-
tion
Spark plug cap mal-
function
Ignition coil mal-
function
Engine stop lan-
yard switch mal-
function
Charge coil mal-
function
Pulser coil malfunc-
tion
CDI unit malfunc-
tion
Pinched or kinked
fuel hose
Clogged fuel filter
Fuel pump malfunc-
tion
Carburetor malfunc-
tion
Prime Start mal-
function
Valve clearance not
adjusted correctly
Damaged cylinder
head gasket
Damaged valve
Valve stuck to valve
guide
Scratched piston
and piston ring(s)
Cause 2
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Malfunction of the
carburetor internal
parts
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Checking step
Check the spark
plug.
Check the spark
plug cap.
Check the ignition
coil.
Check the engine
stop lanyard switch.
Check the charge
coil.
Check the pulser
coil.
Check the CDI unit.
Check the fuel
hoses and fuel hose
joint.
Clean or replace
the fuel filter.
Disassemble and
check the fuel
pump.
Disassemble and
check the carbure-
tor.
Check the Prime
Start.
Adjust the valve
clearance.
Disassemble and
check the cylinder
head and power
unit.
Refer
to
page
3-5
8-22
8-22
8-24
8-23
8-23
8-25
3-2
3-3
4-6
4-12
4-13
5-2
5-37
5-51
6AG3J11