Air Induction System; Throttle Body - Sea-doo RX Shop Manual

Section 05 ENGINE MANAGEMENT (DI)
Subsection 03 (COMPONENT INSPECTION AND ADJUSTMENT)

AIR INDUCTION SYSTEM

THROTTLE BODY

Mechanical Inspection
Check that the throttle plates moves freely and
smoothly when depressing throttle lever. Take this
opportunity to lubricate the throttle cable.
IMPORTANT: The throttle bodies are designed to
be tamper proof. Changing the idle stop or modi-
fying them in any way will not increase perfor-
mance or change the idle speed.
Before replacing any parts, check the following as
these could be causing the fault. Perform the test
while the engine is not running.
– Throttle cable adjustment too tight. Not return-
ing fully to idle stop.
– Throttle body idle set screw is loose or worn.
– Throttle linkage between the two throttles has
moved.
– TPS is loose.
– Corroded or damaged wiring or connectors.
– Throttle body has been replaced and the closed
TPS reset has not been performed.
– MPEM has been replaced and the closed TPS
reset has not been performed.
Electrical Inspection
Refer to Throttle Position Sensor (TPS) in Elec-
tronic Management below.
Replacement
Removal
To remove throttle bodies from engine, proceed
as follows:
– Remove air intake silencer. Refer to AIR INTAKE
section.
– Disconnect TPS connectors.
– Disconnect throttle cable and oil injection pump
cable.
– Detach hoses and remove fasteners retaining
throttle bodies and pull out together.
If only one throttle body replacement is required,
detach them and remove the sealant on idle set
screw head. Gently remove the plastic cap from
the synchronization screw.
Remove TPS, throttle lever, spring and guide from
the old throttle body.
05-03-4
Installation
Reinstall removed parts on the new throttle body.
For TPS replacement procedures, refer to Throt-
tle Position Sensor (TPS) in Electronic Manage-
ment below.
Properly attach throttle bodies together if previ-
ously detached.
Adjustment
Throttle Bodies
NOTE: If both throttle bodies are replaced togeth-
er with new parts, no adjustment is required as
they have already been set at the factory. Howev-
er, continue with throttle cable and closed TPS ad-
justments below. If only one throttle body is re-
placed, proceed with the complete following
adjustments. Ensure to always perform complete
and proper adjustments as described here prior to
starting the engine. Otherwise, engine may run at
a limited RPM.
IMPORTANT: The throttle body adjustment is re-
quired only when replacing one throttle body. Oth-
erwise, do not tamper with this adjustment as this
is NOT a regular maintenance procedure.
The master throttle body is the one driven by the
throttle cable. The slave throttle body follows the
master and must me synchronized with the master.
1. Throttle cable attachment
2. Master throttle body
3. Master throttle plate
4. Slave throttle body
5. Slave throttle plate
6. Idle set screw
7. Lock nut
8. Synchronizing screw with its tamper proof cap
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SMR2000-051-05-03A.FM