Page 332 - Manual Oficina Polaris Sportsman 570 2014 a 2016

FUEL SYSTEM

MECHANICAL THROTTLE BODY

MECHANICAL THROTTLE BODY THROTTLE BODY REPLACEMENT
OVERVIEW
1. Remove the seat and side panels.
Mounted to the air intake, the mechanical throttle body is
a mechanical valve that, when actuated, varies the 2. Remove the airbox and breather box (if equipped).
amount of air allowed to enter the air intake based on 3. Disconnect the wire harness from the IAC q and
throttle plate angle. TPS e.

4. Remove the hose clamps retaining the throttle
housing body to intake.
CAUTION
5. Remove the screw that retain the cover on the cam
The correct position of the throttle body stop screw q is side of the throttle body.
established and set at the factory.
6. Remove the plate covering the cam, throttle shaft and
DO NOT loosen the throttle body stop screw or alter its
position in any manner. The stop screw controls the air throttle cable.
flow calibration of the throttle body. If the stop screw is 7. Rotate the throttle cam to slack the throttle cable and
repositioned or adjusted, the throttle body assembly rotate the throttle cable end so the cable may be
must be replaced. removed form the cam; slide the throttle cable end
and guide out of the cam.
The throttle position sensor is mounted on the throttle 8. Loosen the jam nut on the throttle cable sheath and
body and operated directly off the end of the throttle shaft Remove the throttle cable from the throttle body.
on the mechanical throttle body. The TPS provides the 9. Reverse these steps for installation. Torque the ETC
ECU throttle position information that allows the ECU to housing retaining bolts and intake boot clamp to
send signals to other components to provide the proper specification.
air/fuel ratio needed for engine operation at all RPM
ranges. This signal is processed by the ECU and TORQUE
compared to the internal pre-programmed “maps” to
determine the required fuel and ignition settings for the Intake Boot Clamp:
amount of engine load. 35 in-lb (4 Nm)

4.16 9926803 R06 - 2014-2016 Sportsman 325 / ETX / 450 HO / 570 Service Manual
© Copyright Polaris Industries Inc.