Arctic Cat Cougar Service Manual page 238

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disconnected hoses and clean up any
spills immediately. Sparks or other acci-
dental ignition sources are possible even
when care is taken, so be prepared for an
emergency.
CAUTION
The system contains components that
should NOT be disassembled and the
system should NEVER be modified in
any way either by changing or removing
of components. Refer to the following
CAUTIONs whenever testing or servic-
ing the Electronic Fuel Injection system.
1. Be reluctant to change any adjustments to the
system. Follow recommended procedures care-
fully after determining that adjustment is neces-
sary. Be careful not to change any fuel system
adjustments in an attempt to correct a different
problem.
2. Do not disassemble the Electronic Control
Unit (ECU).
3. Do not disassemble, change or substitute any
of the system's sensors. Each is specifically de-
signed to function in balance with other compo-
nents on this engine and in this application.
CD
Return line
I
Vent
Fuel pickup
CHAPTER SEVEN
4. Use only parts recommended by the manu-
facturer and available from your Arctic Cat
dealer when replacing defective parts.
5. Always install new 0-rings, sealing washers
and gaskets when assembling. Make sure there
are no air or fuel leaks after assembling.
6. Do not touch any of the terminals with your
hands or attempt to clean terminals using any
product except cleaners specified for electronic·
connectors and components.
7. Do not disconnect the battery or any electrical
wires from fuel injection components with the
engine running. Make sure that the main switch
is OFF, then disconnect the negative (ground)
cable from the battery, before disconnecting any
wires from a component of the system.
8. Use approved tools and procedures when re-
moving and installing system components. Use
care to prevent damaging parts while removing
or installing.
9. Make sure that fuel lines are not restricted
either accidentally or deliberately. Never attempt
to restrict or block a fuel line.
Fuel rail
Throttle
bodies
Fuel pressure
regulator
Throttle
position
sensor