Efi System - Cub Cadet Challenger 500 Operator's Manual

2. Install the parking brake lever boot.
3. Install the seats.
CAUTION:
 When installing the console, be sure not
to pinch the cables or wires.
 Make sure that the groove at the bottom
of the parking brake lever boot and the
drive select lever boot fits securely
around the edge of the hole in the
console.
Periodic Maintenance and Adjustment

EFI system

EFI engines are completely different from
engines which use carburetors. An EFI
engine consists of an ECU, EFI-cables,
sensors, actuators, and other advanced
components.
See the following pictures:
1. Oxygen sensor
2. Oxygen sensor threaded sleeve
3. Exhaust Pipe
8-9