Yamaha YZF-R125 Service Manual: Installing the drive chain

Yamaha YZF-R125 Service Manual / Chassis / Chain drive / Installing the drive chain

1. Lubricate:

Drive chain
Master link

2. Install:

Drive sprocket
Drive sprocket retainer bolts

3. Install:

Master link
O-rings
Master link plate
Master link clip "1"

CAUTION:

The closed end of the master link clip must face in the direction of drive chain rotation.
Never install a new drive chain onto worn drive chain sprockets; this will dramatically shorten the drive chain's life.

NOTE:

Install the master link plate with its manufacturer mark facing outward.

Installing the drive chain

4. Install:

Drive sprocket cover

NOTE:

Be sure not to pinch the neutral switch lead when installing the drive sprocket cover.

5. Install:

Rear wheel Refer to "REAR WHEEL" on page 4-12.

6. Adjust:

Drive chain slack Refer to "ADJUSTING THE DRIVE CHAIN SLACK" on page 3-21.

CAUTION:

A drive chain that is too tight will overload the engine and other vital parts, and one that is too loose can skip and damage the swingarm or cause an accident. Therefore, keep the drive chain slack within the specified limits.

Checking the drive sprocket

1. Check: Drive sprocket More than 1/4 tooth "a" wear Replace the drive chain sprockets as a set. Bent teeth Replace the drive chain sprockets as a set. b. Correct 1. Dri ...

Engine

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Other materials:

Cleaning and lubricating the drive chain
The drive chain must be cleaned and lubricated at the intervals specified in the periodic maintenance and lubrication chart, otherwise it will quickly wear out, especially when riding in dusty or wet areas. Service the drive chain as follows. NOTICE The drive chain must be lubricated ...

Engine tightening torques
Cylinder head tightening sequence: Generator cover tightening sequence: Clutch cover tightening sequence: Crankcase tightening sequence: A. Left crankcase B. Right crankcase ...

Genuine Yamaha Accessories
Choosing accessories for your vehicle is an important decision. Genuine Yamaha accessories, which are available only from a Yamaha dealer, have been designed, tested, and approved by Yamaha for use on your vehicle. Many companies with no connection to Yamaha manufacture parts and access ...