Jet Pump Unit; Impeller Inspection - Yamaha WaveRunner GP800R Service Manual

INSP
ADJ
ELECTRICAL/JET PUMP UNIT
5. Install:
Battery breather hose 1
Battery
Battery positive lead 2
Battery negative lead 3 (with termi-
nal extension at battery negative ter-
minal)
Band
CAUTION:
Connect the positive lead to the battery
terminal first.
Make sure the battery leads are con-
nected properly. Reversing the leads can
seriously damage the electrical system.
Make sure that the battery breather hose is
properly connected and is not obstructed.
Coat the terminals with a water resistant
grease to minimize terminal corrosion.

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 (0.02 in)
Measurement steps:
Remove the battery leads.
Remove the intake grate 1 and intake
duct 2.
Measure the clearance at each impel-
ler blade as shown (a total of three
measurements).
Install the intake grate and intake duct.
Bolt:
M6: 7 N • m
(0.7 kgf • m, 5.1 ft • lb)
M8: 17 N • m
(1.7 kgf • m, 12 ft • lb)
Install the battery leads.
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E