2005 YAMAHA VX110 fuel

3-1
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MAINTENANCE INTERVAL CHART
MAINTENANCE INTERVAL CHART
The following chart should be considered strictly as a guide to general maintenance intervals.
Depending on operating conditions, the intervals of maintenance should be changed.
*1: After every use
MAINTENANCE INTERVAL INITIALTHEREAFTER
EVERYPAGE
10 hours 50 hours 100 hours 100 hours 200 hours
ITEM6
months12
months12
months24
months
Spark plug Inspect, clean, adjust 3-20
Lubrication points Lubricate 3-26
Fuel system Inspect3-7
Fuel tank Inspect, clean 3-7
Trolling speed Inspect3-6
Throttle shaft Inspect—
Cooling water passages Flush *1 —
Water inlet strainer Inspect, clean —
Bilge strainer Clean3-26
Impeller Inspect3-25
Jet thrust nozzle angle Inspect, adjust 3-2
Shift cable and
mechanism
(Deluxe model only)Inspect, adjust 3-5
Throttle cable Inspect, adjust 3-4
Stern drain plugs Inspect, replace 3-26
Battery Inspect 3-22
Rubber coupling Inspect—
Engine mount Inspect5-7
Nuts and bolts Inspect—
Air filter Inspect, replace 3-18
Engine oil Replace 3-14
Engine oil filter Replace 3-16
Valve clearance Inspect, adjust 3-8
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3-7
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FUEL SYSTEM
FUEL SYSTEM
WARNING
When removing fuel system parts, wrap
them in a cloth and take care that no fuel
spills into the engine compartment.
Fuel line inspection
1. Inspect:
Fuel pump filter
Clog/contaminants →
Clean.
Refer to “FUEL TANK AND FUEL
PUMP MODULE” in Chapter 4.
Fuel hose
Cracks/damage →
Replace.
O-rings (quick connector)
Cracks/damage →
Replace the quick
connector.
Fuel rail
Cracks/damage →
Replace.
Refer to “FUEL INJECTION SYSTEM”
in Chapter 4.
Fuel filler hose
Fuel filler cap
Cracks/damage →
Replace.
2. Inspect:
Fuel tank
Cracks/damage →
Replace.
Water accumulation →
Remove.
NOTE:
To remove water from the fuel tank, remove
the fuel filler hose 1
and use a siphon pump.
Refer to “FUEL TANK AND FUEL PUMP
MODULE” in Chapter 4.
1
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3-8
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FUEL SYSTEM/POWER UNIT
Water separator inspection
1. Inspect:
Water separator 1

Water accumulation →
Drain.
NOTE:
To drain the water, remove the drain plug.
POWER UNIT
Valve clearance adjustment
The following procedure applies to all of the
valves.
NOTE:
Valve clearance adjustment should be made
on a cold engine, at room temperature.
When the valve clearance is to be measured
or adjusted, the piston must be at top dead
center (TDC) of the compression stroke.
1. Remove:
Ignition coils
Spark plugs
Cylinder head cover
Cylinder head cover gasket
Refer to “CAMSHAFTS” in Chapter 5.
2. Install:
Dial gauge needle
Dial gauge stand 1

(into spark plug hole #1)
Dial gauge 2

Dial gauge stand:
90890-06583
Dial gauge needle:
90890-06584
Dial gauge stand set:
YB-06585/90890-06585
Dial indicator gauge:
YU-03097
Dial gauge set:
90890-012522
1
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3-18
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POWER UNIT
7. Fill:
Oil tank
(with the specified amount of the recom-
mended engine oil)
CAUTION:
When starting the engine make sure the
dipstick is securely fitted into the oil tank.
8. Install:
Oil tank filler cap
Recommended oil:
SAE 10W-30, 20W-40, 20W-50
API SE, SF, SG, SH, SJ, SL
Oil quantity:
Total amount:
4.3 L (4.5 US qt, 3.8 Imp qt)
Without oil filter replacement:
2.0 L (2.1 US qt, 1.8 Imp qt)
With oil filter replacement:
2.2 L (2.3 US qt, 1.9 Imp qt)
Air filter element clean
1. Disconnect:
Fuel hose 1

Air intake hose 2

Oil separator breather hose 3

2. Remove:
Plastic ties 4

Bolts 5

1
2 4
45 4
3
3. Remove:
Air filter case
4. Remove:
Air filter case cover
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3-20
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POWER UNIT
Spark plug inspection
1. Remove:
Ignition coils
CAUTION:
Be careful not to get any foreign sub-
stances or water in spark plug hole.
2. Inspect:
Electrodes 1

Damage/wear →
Replace.
Insulator color 2

Distinctly different color →
Check the
engine condition.
Color guide:
Medium to light tan color:
Normal
Whitish color:
Lean fuel mixture
Air leak
Incorrect settings
Blackish color:
Overly rich mixture
Electrical malfunction
Defective spark plug
3. Clean:
Spark plug
(with a spark plug cleaner or wire brush)
4. Measure:
Spark plug gap a

Out of specification →
Regap.
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
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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 ..................................................................... 4-4
Fuel pump module removal................................................................. 4-4
Check valve inspection ....................................................................... 4-4
Fuel sender inspection ........................................................................ 4-5
Fuel tank inspection ............................................................................ 4-5
Fuel hose inspection ........................................................................... 4-5
Fuel pump filter inspection .................................................................. 4-5
Fuel pump module installation ............................................................ 4-6
Fuel hose connect ............................................................................... 4-6
FUEL INJECTION SYSTEM ............................................................................ 4-7
EXPLODED DIAGRAM ............................................................................. 4-7
REMOVAL AND INSTALLATION CHART ................................................ 4-7
THROTTLE BODY ASSEMBLY AND INTAKE MANIFOLD ........................ 4-10
EXPLODED DIAGRAM ........................................................................... 4-10
REMOVAL AND INSTALLATION CHART .............................................. 4-10
SERVICE POINTS .................................................................................. 4-12
Fuel hose clamps removal ................................................................ 4-12
Hose clamps installation ................................................................... 4-12
Fuel hose disconnection ................................................................... 4-12
Fuel line inspection ........................................................................... 4-13
Fuel hose installation (replacing with new fuel hose) ........................ 4-14
Fuel hose connection ........................................................................ 4-14
Fuel injectors inspection.................................................................... 4-15
Throttle body assembly inspection .................................................... 4-15
Accelerator position sensor inspection.............................................. 4-15
Intake assembly installation .............................................................. 4-16
Air filter case assembly installation ................................................... 4-17
Fuel pressure measurement ............................................................. 4-17
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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.
Storage compartment panel Refer to “FRONT HOOD” in Chapter 8.
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 Fuel tank breather hose 1
2 Check valve 1
NOTE:
Make sure the arrow direction pointed
toward fuel tank.
7
10
11 3
2
1
18
17121315
16
14
12 6 5
4 8
9
2nd 6.4 N • m (0.64 kgf  m, 4.6 ft  Ib) 1st 3.2 N  m (0.32 kgf  m, 2.3 ft  Ib)
3.7 N  m (0.37 kgf  m, 2.7 ft  Ib)
5.9 N  m (0.59 kgf  m, 4.3 ft  Ib)
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4-2
EFUELFUEL TANK AND FUEL PUMP MODULE
EXPLODED DIAGRAM
Step Procedure/Part name Q’ty Service points
3 Fuel tank breather hose 1
NOTE:
Make sure that the inner seal of the coupler
is installed properly before connecting the
coupler. 4 Fuel sender coupler 1
5 Fuel pump module coupler 1
6 Cover 1
7 Fuel hose 1
8Nut 9
9 Retainer 1
10 Fuel pump module 1
11 Packing 1
7
10
11 3
2
1
18
17121315
16
14
12 6 5
4 8
9
2nd 6.4 N  m (0.64 kgf  m, 4.6 ft  Ib) 1st 3.2 N  m (0.32 kgf  m, 2.3 ft  Ib)
3.7 N  m (0.37 kgf  m, 2.7 ft  Ib)
5.9 N  m (0.59 kgf  m, 4.3 ft  Ib)
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