Section04ENGINE
Subsection 07 (CARBURETOR AND THROTTLE CABLE)
Startengineandallowittowarmthenadjust
idle speed to specifications by turning idle speed
screw clockwise to increase engine speed or
counterclockwise to decrease it.
RefertoTECHNICALDATAforthespecifications.
CAUTION: Do not attempt to set the idle speed
by using the pilot screw. Severe engine dam-
age can occur.
DPM
Some Models
A33C1JA
19
18
20
18
TESTING
Air Temperature Sensor
At 20 °C(68°F), the sensor resistance must be
2500
±300.
Sensor should also be tested through all its oper-
ating range. Use the following chart.
Replace sensor if not within specifications.
TEMPERATURE
°C °F
RESISTANCE
(OHMS)
-30 -22 28 000
-20 -4 14 500
0 32 5500
20 68 2500
40 104 1200
60 140 600
80 176 320
100 212 180
120 248 120
Solenoid and MPEM
Static Test
Unplug electric connector of solenoid no. 20 and
connect it to a 12 V battery. The solenoid must
sound when it opens. Otherwise, replace sole-
noid. Repeat test several times.
Dynamic Test
Air temperature sensor must be at 20 °C(68°F).
For the test, operate the engine at the RPM spec-
ified in the following chart.
MODEL TEST RPM
GSX 800 R Limited
MX Z 600 R Renegade
MX Z 800 R Adrenaline/Renegade/
Renegade X/X
Summit 600 R Adrenaline/X
Summit 800 R Adrenaline/HM/HM
X/HM Xtrem/X
3800
The solenoid must vibrate.
Otherwise, ensure fuse(s), wiring harness and
connections are in good condition and if so, try
a new MPEM and retest. Refer to ELECTRICAL
section.
PARTS REMOVAL AND
INSTALLATION
Solenoid
At reassembly, ensure that solenoid seals are in
place.
152 mmr2004-Rev