Starter noise

Start the engine. If the starter is malfunctioning, it can be corrected as follows. Before performing the following operations, make sure that the battery is fully charged, the wires are clean and tight, and the ground contacts are clean, tight, and in the correct position.

Step	Operation	Values	Yes	No
1	Start the engine, listening to the starter speed. Is a siren-like noise heard when the engine speed is increased at the moment the starter is turned on, after the engine has started, but while the starter is held in the on position?	-	Go to operation 4	Go to operation 2
2	Is it bugged "hum", "bolt" or in severe cases "knocking", when does the starter stop after starting the engine?	-	Go to operation 5	Go to operation 3
3	Important: This is often caused by non-stop operation of the starter drive gear or a loose solenoid. When cranking the engine, do you hear a piercing howl at the moment when cranking stops and the engine starts to run normally?	-	Go to operation 6	Go to operation 5
4	Check the flywheel disc for the following: Splitting gear teeth Lack of gear teeth Tooth fragmentation Is the flywheel bent or its teeth damaged?	-	Jump to Operation 7	Jump to operation 8
5	Remove starter. follow the paragraph "Starter"in this section. Check starter bushings and clutch gear. Does the clutch gear have split or crushed teeth or worn bushings?	-	Jump to operation 8	Jump to Operation 7
6	Remove the starter from the flywheel by adding between the starter and the engine block one washer at a time. Flywheel wobble can cause this noise to be intermittent. Repair completed?	-	Go to operation 9	-
7	Replace flywheel. Has the replacement been made?	-	Go to operation 9	-
8	Replace starter. follow the paragraph "Starter"in this section. Has the replacement been made?	-	Go to operation 9	-
9	Turn on the system to check the repair results. Has the problem been resolved?	-	System OK	Jump to operation 1