4-9
Engine Servicing
(1) CONNECTOR RUBBER
(2) CONNECTOR COVER
(1) 5P (BLACK) CONNECTOR
(2) CLIP
5. Install the connector rubber to the fuel joint prop-
erly.
6. Install the connector cover onto the fuel feed hose
securely.
7. Connect the fuel pump 5P (Black) connector.
Install the harness clip to the fuel pump base as
shown.
Check for fuel leaks (see injector side procedure).
(1) PRESSURE GAUGE
(2) MANIFOLD
(3) FUEL JOINT
Install the fuel pressure gauge between the fuel
pump side fuel joint and fuel feed hose using the fol-
lowing tools.
Tools:
Fuel pressure gauge
07406-0040004
Manifold
07ZAJ-S5A0111
Fuel hose, 9–9
07ZAJ-S5A120
Fuel hose, 8–9
07ZAJ-S7C100
Fuel joint, 8–9
07ZAJ-S7C200
Connect the fuel pump 5P (Black) connector.
Start the engine and read the fuel pressure at idle.
Idle speed: 3,000 ± 300 min
-1
(rpm)
Fuel pressure:
314 – 382 kPa (3.2 – 3.9 kgf/cm
2
, 46 – 56 psi)
If the fuel pressure too high, check the following:
– Pressure regulator
– Fuel pump (page 4-10)
If the fuel pressure too low, check the following:
– Fuel leaks from fuel line
– Clogged fuel filter
– Pressure regulator
– Fuel pump (page 4-10)
Remove the tools and connect the fuel line.
(1) FUEL FEED HOSE
Fuel Line Inspection
Fuel Pressure Inspection
Gasoline is highly flammable and is explosive.
You can be burned or seriously injured.
When refueling:
• Stop engine and keep heat, sparks, and flame
away.
• Refuel only outdoors.
• Wipe up spills immediately.
Cover the fuel pump side quick connector with a
shop towel or an equivalent.
Disconnect the fuel pump side quick connector from
the fuel joint.
(1)
(2)
(1)
(2)
(1)
(3)
(2)
(1)
Summary of Contents for NSF250R 2012
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