5-21
5
INSTALLING/ADJUSTING
1. Place the TPS into position on the throttle body and
secure with the two screws. Do not tighten at this time.
2. Connect the main harness to the TPS.
3. Locate the diagnostic connector under the seat
next to the PDM; then install the test plug from
Test Plug/Error Code List kit onto the connector.
4. Turn the ignition switch to the ON position and
note the position of the TPS indicator icon (A, B,
or C); then adjust the TPS until the TPS icon
appears in the center position (B).
PR542A
PR540A
PR541A
5. Tighten the mounting screws securely; then verify
the TPS icon appears in the center position (throt-
tle in idle position).
6. Cycle the throttle lever from idle to approximately
half throttle position several times; then return the
throttle to idle. The display should return to (B)
position.
7. Remove the test plug; then install the left-side
engine cover.
Troubleshooting
Problem: Spark absent or weak
Condition
Remedy
1.
Ignition coil
defective
2.
Spark plug
defective
3.
Magneto
defective
4.
CDI unit/ECU
defective
5.
Pick-up coil
defective
1. Replace ignition coil
2. Replace plug
3. Replace magneto
4. Replace CDI unit/ECU
5. Replace pick-up coil
Problem: Spark plug fouled with carbon
Condition
Remedy
1.
Mixture
too rich (400/650)
2.
Idling RPM
too high (400/650)
3.
Gasoline
incorrect
4.
Air cleaner element
dirty
5.
Spark plug
incorrect (too cold)
6.
Valve seals
cracked - missing
7.
Oil rings
worn - broken
1. Adjust carburetor
2. Adjust carburetor
3. Change to correct gasoline
4. Clean element
5. Replace plug
6. Replace seals
7. Replace rings
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