2020 Kawasaki KLX140 Brake Fluid Replacement - Page 1

Article Last Updated: August 18, 2024

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2020 Kawasaki KLX140L front brake master cylinder

This is a step-by-step guide to replacing the brake fluid on a Kawasaki KLX140. The information on this page is based on information contained in the official Kawasaki KLX140 service manual, 2020 (part no. 99924-1390-14) which covers model years 2008 - 2021 and models KLX140A/KLX140/KLX140R, KLX140B/KLX140L/KLX140RL and KLX140C/KLX140G/KLX140RF. The author is not aware of any relevant mechanical changes to the KLX140 models for the model years 2022-2024, so this guide should apply to those as well. Check with a Kawasaki dealer if in doubt or get the latest version of the service manual.

Disclosure: While the author has attempted to provide correct and complete information, sometimes errors or omissions may occur. By using this document and following the procedures and advice below, the user assumes all risk and responsibility for injury or damage to their motorcycle. The author has been servicing motorcycles for many years (not as a profession) and is mostly self-taught (no formal training in motorcycle servicing). It is recommended that you consult the Kawasaki KLX140 owner’s manual and/or service manual.

KLX140A / KLX140 / KLX140R: model with 17”/14” wheel combination
KLX140B / KLX140L / KLX140R L: model with 19”/16” wheel combination
KLX140C / KLX140G / KLX140R F: model with 21”/18” wheel combination

Information from Kawasaki KLX140 Service Manual

Recommended service interval for brake fluid replacement
Every 2 years

Torque Specifications
Front and rear caliper bleed valve: 7.8 N.m (69 in.lb)
Front and rear reservoir cap screw: 1.5 N.m (13 in.lb)

Service Manual Warnings


Service Manual Instructions for Brake Fluid Replacement

The same procedure applies to both front and rear brakes.
Service Manual Instructions for Bleeding the Brakes

Warning: air in the brake lines reduce braking performance. If the brake lever or pedal feels spongy, there may be air in the system, or the brakes may be defective. Do not operate the bike until the issue is resolved.

Service Manual Instructions for Brake Fluid Level Inspection

Hold the reservoir horizontal when checking the brake fluid level.

The brake fluid level in the reservoir must be kept above the lower-level line. Add brake fluid if required: add fluid to the upper-level line.

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