Yamaha WaveRunner VX 700, Service Manual

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TRBL
SHTG
Troubleshooting
9-1
Engine unit troubleshooting
TIP:
• Before troubleshooting the engine unit, make sure that fresh fuel of the specified type has been
used.
• Check that all wiring connections are properly secured and that they are not rusty or corroded.
• Check that the engine shut-off cord is connected to the engine shut-off switch.
• Check that the battery is charged and that its specific gravity is within specification.
Troubleshooting (engine unit, jet pump unit, charging system)
Symptom 1: Specific trouble conditions
Symptom 2: Trouble conditions of an area or individual part
Cause: The content considered as the trouble factors for symptom 2
—: Not applicable
Symptom 1: Engine does not crank.
Symptom 2 Cause Checking step
See
page
Starter motor does
not operate Discharged battery Check the battery voltage and spe-
cific gravity. 3-8
Loose connection of bat-
tery terminal Check the battery cable and termi-
nal for proper connection. 7-2
Blown fuse Check the fuse for continuity 7-10
Starter relay malfunction Check the starter relay. 7-11
Engine start switch mal-
function Check the engine start switch.
(left handlebar switch) 7-10
Short, open, or loose con-
nection in starter motor cir-
cuit Check the wiring harness. WD
Starter motor malfunction Disassemble and check the starter
motor. 7-12
Stuck piston or crankshaft Disassemble and check the engine
unit. 5-21
5-33
Stuck impeller Disassemble and check the jet
pump unit. 6-6
Starter motor oper-
ates, but the engine
does not crank Starter clutch assy. or fly-
wheel magneto malfunc-
tion Check the starter clutch assy., fly-
wheel magneto, or Woodruff key. 5-25
5-27
WD: See the wiring diagram.