2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 54Get this manual

2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 54

ELECTRONIC FUEL INJECTION ELECTRONIC CONTROL UNIT (ECU) Operation Overview The ECU is the brain or central processing computer
self in rapid succession, limiting operation to the preset maximum Maximum RPM Limit: 8000 SPORTSMAN XP 850 RPM Limit: Hard
LimitFuel injector suppression occurs All Gears: 8000 RPM Soft LimitSpark timing suppression occurs All Gears: 7500 RPM ECU
Service Never attempt to disassemble the ECUIt is sealed to prevent damage to internal componentsWarranty is void if the
case is opened or tampered with in any wayAll operating and control functions within the ECU are pre-setNo internal servicing
or readjustment may be performedIf problem is encountered, and you determine the ECU to be faulty, contact the Polaris Service
Department for specific handling instructionsDo not replace the ECU without factory authorizationThe relationship between
the ECU and the throttle position sensor (TPS) is very critical to proper system operationIf the TPS is faulty, or the mounting