SPROCKETS INSPECTION/DRIVE CHAIN INSPECTION

INSP

ADJ

1

SPROCKETS INSPECTION

1.Inspect:

Sprocket teeth a Excessive wear Replace.

NOTE:

Replace the drive sprocket, rear wheel sprocket and drive chain as a set.

DRIVE CHAIN INSPECTION

1.Remove:

• Drive chain 1

NOTE:

Remove the drive chain using a drive chain cutter 2.

2.Clean:

Drive chain

Brush off as much dirt as possible. Then clean the drive chain using the chain cleaner.

CAUTION:

This machine has a drive chain with small rubber O-rings 1 between the side plates.

Steam cleaning, high-pressure washes, certain solvent and kerosene can damage these O-rings.

3.Inspect:

O-ring 1 (drive chain)

Damage Replace the drive chain.

Roller 2

Side plate 3

Damage/wear Replace the drive chain.

4.Measure:

Drive chain length (10 links) a Out of specification Replace.

Drive chain length (10 links): <Limit>: 150.1 mm (5.91 in)

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Yamaha WR250FM service manual Sprockets INSPECTION/DRIVE Chain Inspection, Sprockets Inspection, Drive Chain Inspection