Jet Pump Unit; Impeller Inspection - Yamaha WaveRunner FX140 Service Manual

INSP
ADJ

JET PUMP UNIT

JET PUMP UNIT

Impeller inspection

1. Check:
• Impeller 1
Damage/wear → Replace.
Nicks/scratches → File or grind.
2. Measure:
• Impeller-to-housing clearance a
Out of specification → Replace.
Max. impeller-to-housing
clearance:
0.6 mm (0.0236 in)
Measurement steps:
• Remove the battery leads.
• Remove the intake grate and intake duct.
Refer to "INTAKE GRATE, RIDE PLATE,
AND INTAKE DUCT" in Chapter 6.
• Measure the clearance at each impeller
blade as shown (a total of three measure-
ments).
• Install the intake duct and intake grate.
Refer to "INTAKE GRATE, RIDE PLATE,
AND INTAKE DUCT" in Chapter 6.
• Install the battery leads.
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