General periodic maintenance
10-8
Cowling lock lever
Check the fitting by pushing the top cowling.
Looseness/rattling → Adjust or replace the top cowling stopper.
10-21
Valve clearance
Check the valve clearance.
Out of specification → Adjust.
7-1
Water pump
Check the upper water pump housing.
Deformed → Replace.
8-13
Check the upper impeller, insert cartridge, and outer plate car-
tridge.
Cracked/worn → Replace.
Check the lower impeller and lower water pump housing.
Cracked/damaged → Replace.
Check the impeller key and keyway in the drive shaft.
Deformed/worn → Replace.
Wire harness Check the wire harness coupler and lead coupler connections. —
Yamaha
Gauge
Check the gauge display. —
SBW
Check that the steering operates smoothly.
Not smooth → Check the steering arm, swivel bracket, steering
actuator, helm unit, or related parts.
9-32
9-42
Check whether the steering responds immediately when the
steering wheel is turned.
Slow response → Check the steering control system compo-
nents for tightness, looseness, and wear.
9-32
9-42
Check the steering control system components.
Looseness → Tighten.
Worn/corroded → Replace.
9-32
9-42
Check the trouble code using the YDIS.
Trouble code is detected → Perform the troubleshooting proce-
dures.
4-8
Check the wire harness coupler and lead coupler. —
Item Procedures See
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