Section 03
ENGINE
Subsection 02
(TROUBLESHOOTING)
03-02-8
VMR2004_006_03_02A.FM
ENGINE GENERAL
SYMPTOM
GEAR(S) IS (ARE) HARD TO SHIFT.
CONDITION
NORMAL USE.
Test/Inspection
1. Check shift drum and/or shift forks for wear and/or damages.
a. Shift drum has worn out and/or damaged tracks.
Replace shift drum.
b. Shift fork(s) is (are) worn out and/or engagement pins are damaged.
Replace shift fork(s).
c. Shift fork(s) is (are) worn out and/or fork(s) is (are) damaged.
Replace shift fork(s).
d. Shift gear(s) is (are) worn out.
Replace shift gear(s).
e. Shift shaft teeth do not correspond with shift drum position.
Readjust shift shaft (refer to TRANSMISSION).
2. Check engine idle speed (choke in use).
a. Idle speed is to high (CVT starts to work).
Adjust idle speed.
b. Choke is in use and increases the engine RPM.
Release choke.
SYMPTOM
ENGINE BACKFIRES.
CONDITION
NORMAL USE.
Test/Inspection
1. Check spark plug and/or electrical system.
a. Carbon accumulation caused by defective spark plug.
Clean carbon accumulation and replace spark plug.
b. Electrical system has failure.
Replace defective part(s).
2. Check leakage on intake manifold.
a. Air leak on intake system.
Retighten screws and/or replace intake manifold.
3. Check exhaust air leaking.
a. Exhaust gasket is leaking.
Retighten screws and/or replace exhaust gasket.
4. Check intake valve(s) for leaking.
a. Intake valve(s) is(are) leaking.
Repair or replace valve(s).
5. Check if fuel supply is too less at high RPM.
a. Fuel line is contaminated and/or bent (engine gets lean).
Clean and/or replace defective part(s).
Содержание DS 650
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