Yamaha WaveRunner VX 700, Service Manual

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A
Symptom 1: High engine idle speed
Symptom 1: Limited engine speed
Symptom 1: Discharged battery
Compression pres-
sure is low Compression leakage Measure the compression pres-
sure. 3-5
Check the cylinder head gasket
and cylinder head warpage. 5-17
Check the piston and piston ring for
damage. 5-22
Check the cylinder for damage. 5-19
WD: See the wiring diagram.
Symptom 2 Cause Checking step
See
page
— Throttle cable installed
incorrectly Adjust the throttle lever free play
and check the cable routing. 3-2
Improper throttle stop
screw setting Adjust the throttle stop screw. 3-6
Symptom 2 Cause Checking step
See
page
• Buzzer sounds
intermittently
• Overheat warning
indicator blinks
• “WARNING” indi-
cator blinks
Clogged cooling water
passage Check the cooling water pilot outlet
for water discharge. —
Check the cooling water passage. 2-13
Thermoswitch malfunction Check the thermoswitch. 7-8
Symptom 2 Cause Checking step
See
page
— Battery performance
decrease 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
Short, open, or loose con-
nection in charging circuit Check the charging circuit for wir-
ing connection and damage. WD
Lighting coil malfunction Measure the lighting coil output
peak voltage. 7-9
Measure the lighting coil resis-
tance. 7-9
Check the lighting coil wiring har-
ness leads for continuity. WD
Rectifier regulator mal-
function Measure the rectifier regulator out-
put peak voltage. 7-9
Check the rectifier regulator wiring
harness leads for continuity. WD
WD: See the wiring diagram.
Symptom 2 Cause Checking step
See
page
Engine unit troubleshooting