Yamaha Waverunner 3 Manual

3-24
E
INSP
ADJ
ELECTRICAL
1. Remove:
Bands
Battery negative lead 1
 
Battery positive lead 2
 
Battery
Battery breather hose 3
 
 WARNING
When removing the battery, disconnect
the negative lead first.
Remove the battery to prevent acid loss
during turning the machine on its side for
the impeller service.
2
3 1
2. Inspect:
Electrolyte level
Low →
 Add distilled water.
The electrolyte level should be between
the upper a and lower b level marks.
CAUTION:
Use only distilled water. Other types of...

3-25
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INSP
ADJ
ELECTRICAL
3. Inspect:
Specific gravity
Out of specification →
 Charge.
4. Install:
Filler caps
CAUTION:
Before installation, rinse off any fluid from
the battery box and battery and make sure
that the battery is dry before installing it.
Specific gravity at 20 °C (68 °F):
1.28
Charging current:
1.9 amps 
× 10 hrs
5. Install:
Battery breather hose 1
 
Battery 
Battery positive lead 2
 
Battery negative lead 3
 
Bands
CAUTION:
Connect the positive lead to the battery
terminal...

3-26
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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 clearancea
 
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...

3-27
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JET PUMP UNIT/BILGE PUMP
Water inlet strainer inspection
1. Inspect:
Water inlet strainer
Contaminants →
 Clean.
Cracks/damage →
 Replace.
Inspection steps:
Remove the ride plate.
Refer to “INTAKE GRATE, RIDE PLATE,
AND INTAKE DUCT” in Chapter 6.
Remove the rubber plate.
Refer to “JET PUMP UNIT” in Chapter 6.
Remove the water inlet cover 1
.
Inspect the water inlet strainer mesh a
.
Install the water inlet cover.
Install the rubber plate.
Refer to “JET PUMP UNIT” in Chapter 6....

3-28
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BILGE PUMP/GENERAL
Electric bilge pump strainer inspection
1. Inspect:
Cap
Strainer
Contaminants →
 Clean.
Inspection steps:
Remove the band 1
.
Remove the cap 2
 and strainer 3
.
Inspect the cap and strainer.
Install the strainer and cap.
Install the band.
1
3
2
GENERAL
Drain plug inspection
1. Inspect:
Drain plugs
Cracks/damage →
 Replace.
O-rings
Cracks/wear →
 Replace.
Screw threads
Contaminants →
 Clean. 

3-29
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GENERAL
Lubrication points
1. Lubricate:
Throttle cable (handlebar end)
NOTE:
Before lubricating the throttle cable, squeeze
the throttle lever and remove the rubber seal
1
.
2. Lubricate:
Throttle cable (throttle body end)
Recommended lubricant:
Rust inhibitor
Recommended lubricant:
Yamaha marine grease, 
Yamaha grease A 
(Water resistant grease)
3. Lubricate:
QSTS control cables (handlebar end)
NOTE:
Before lubricating the QSTS control cables,
remove the QSTS cable housing cover....

3-30
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GENERAL
5. Lubricate:
Nozzle pivot shaft 
Steering cable (nozzle end)
QSTS cable (nozzle end)
Recommended grease:
Yamaha marine grease, 
Yamaha grease A 
(Water resistant grease)
6. Lubricate:
Steering cable 
Steering cable joint
Shift cable
Shift cable joint 
NOTE:
Disconnect the joints and apply a small
amount of grease.
Recommended grease:
Yamaha marine grease, 
Yamaha grease A 
(Water resistant grease) 

3-31
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GENERAL
7. Fill:
Intermediate housing
NOTE:
Fill the intermediate housing with the recom-
mended grease through the grease nipple 1
.
Recommended grease:
Yamaha marine grease, 
Yamaha grease A 
(Water resistant grease)
Grease quantity:
Initial 10 hours:
33.0–35.0 cm
3 (1.11–1.18 oz)
Every 100 hours or 12 months:
6.0–8.0 cm
3 (0.20–0.27 oz)
1 

EFUEL
1
2
3
4
5
6
7
8
9
CHAPTER 4
FUEL SYSTEM
FUEL TANK AND FUEL PUMP MODULE...................................................... 4-1
EXPLODED DIAGRAM ............................................................................. 4-1
REMOVAL AND INSTALLATION CHART ................................................ 4-1
SERVICE POINTS .................................................................................... 4-4
Fuel hose disconnection...

4-1
EFUELFUEL TANK AND FUEL PUMP MODULE
FUEL TANK AND FUEL PUMP MODULE
EXPLODED DIAGRAM
REMOVAL AND INSTALLATION CHART
Step Procedure/Part name Q’ty Service points
FUEL TANK REMOVAL
Follow the left “Step” for removal.
Service lid 1 Refer to “FRONT HOOD” in Chapter 8.
Service lid 2
Ventilation hose From ventilation fitting
Engine unit Refer to “ENGINE UNIT” in Chapter 5.
NOTE:
When removing the pump module only, it is
not necessary to remove the engine unit.
1 Rollover valve 1
2 Fuel tank breather hose 2...