📘 KOSO manuals • Free online PDFs
Лагатып KOSO

KOSO Manuals & User Guides

KOSO manufactures high-performance aftermarket electronic gauges, LED lighting, and engine components for motorcycles, scooters, and powersports vehicles.

Tip: include the full model number printed on your KOSO label for the best match.

About KOSO manuals on Manuals.plus

КОСА is a premier manufacturer in the powersports aftermarket industry, best known for its high-quality digital instrumentation and electronic accessories. The brand specializes in developing precise monitoring systems, including multifunction speedometers, tachometers, EGT (Exhaust Gas Temperature) gauges, and air/fuel ratio meters, designed to enhance the riding experience for motorcycle, scooter, and ATV enthusiasts.

KOSO's product lineup also includes performance engine parts such as high-flow oil pumps, camshafts, and transmission components. With a slogan of "Feel The Speed," KOSO designs plug-and-play solutions for popular vehicle makes like Harley-Davidson, Honda, and Yamaha, offering riders both aesthetic upgrades and critical performance data. Their instruments are engineered for durability and accuracy, often featuring customizable displays and warning parameters to suit competitive racing or daily commuting needs.

KOSO manuals

Апошнія інструкцыі ад manuals+ спецыяльна распрацаваны для гэтага брэнда.

LED фара KOSO WH030GA01A Zenith LED

27 чэрвеня 2024 г
KOSO WH030GA01A Zenith LED Headlight Specifications Size: 92 mm x 35 mm x 111 mm Weight: 35 mm x 35 mm Mounting Screws: M3xP0.5xL8 mm, M6xP1.0xL10 mm, M8xP1.25xL11 mm Dimensions:…

Інструкцыі KOSO v2024 Dual EGT

6 чэрвеня 2024 г
KOSO v2024 Dual EGT Gauge Thank you for purchasing our product. Before installing/operating the product, read the instructions carefully and retain them for future reference. Attention! For installation, follow the…

Koso wh640mm000-MSX Performance Shaft Інструкцыі

19 мая 2024 г
Koso wh640mm000-MSX Performance Camshaft Thank you for purchasing our product. Before installing/operating the product, read the instructions carefully and retain them for future reference. NOTICE Correct tools must be used…

Koso D2 LCD Multifunction Meter Installation and Settings Guide

кіраўніцтва
This document provides comprehensive instructions for the installation, setup, and operation of the Koso D2 LCD Multifunction Meter for motorcycles. It covers accessory identification, wiring diagrams, feature descriptions, detailed setting…

KOSO RX2 S Data Logger Meter Installation Guide

Кіраўніцтва па ўстаноўцы
Detailed installation guide for the KOSO RX2 S Data Logger Meter. Covers wiring, mounting, features, operation, and troubleshooting for vehicle applications.

Кіраўніцтва па ўсталёўцы і эксплуатацыі падагрэтных ручак KOSO

інструкцыя па эксплуатацыі
Падрабязная інструкцыя па эксплуатацыі падагрэтных ручак KOSO, якая ахоплівае ўстаноўку, характарыстыкі, налады функцый, нізкавольтнасцьtagрэжым е і ліквідацыя непаладак. Забяспечце бяспечнае і правільнае выкарыстанне падагрэтных ручак KOSO.

Кіраўніцтва па ўсталёўцы і эксплуатацыі камплекта манометраў KOSO HD-03L

Кіраўніцтва па эксплуатацыі
Гэта кіраўніцтва змяшчае падрабязныя інструкцыі па ўсталёўцы, эксплуатацыі і наладзе камплекта манометраў KOSO HD-03L з 4 частак для матацыклаў Harley Davidson. У ім апісаны аксэсуары, разборка, праводка, манометры.view, налады і ліквідацыя непаладак.

KOSO Dual EGT Gauge Installation and Operation Manual

Кіраўніцтва па эксплуатацыі
This manual provides detailed instructions for the installation, operation, and troubleshooting of the KOSO Dual EGT Gauge, a vehicle meter designed to monitor exhaust gas temperature and voltage.

KOSO manuals from online retailers

Koso DL-03SR GP Style Multifunction Speedometer User Manual

BB642W10 • April 5, 2026
This manual provides detailed instructions for the Koso DL-03SR GP Style Multifunction Speedometer. Learn about its features, installation, operation, and maintenance for optimal performance. The large display, indicator…

Koso BA004068 Air/Fuel Ratio Meter User Manual

BA004068 • March 29, 2026
Comprehensive user manual for the Koso BA004068 Air/Fuel Ratio Meter, providing detailed instructions for installation, operation, maintenance, and troubleshooting for 2 and 4 stroke engines.

Koso DL-03SR GP-Style Speedometer User Manual

BB642W20 • November 14, 2025
Comprehensive instruction manual for the Koso DL-03SR GP-Style Speedometer (Model BB642W20), covering installation, operation, maintenance, and specifications.

KOSO RX2N Digital Motorcycle Gauge User Manual

MQ905-W • October 16, 2025
Comprehensive user manual for the KOSO RX2N LCD Digital Motorcycle Odometer Speedometer and Fuel Meter (Model MQ905-W), including setup, operation, specifications, and troubleshooting.

KOSO video guides

Глядзіце відэа па ўсталёўцы, наладзе і ліквідацыі непаладак для гэтай маркі.

KOSO support FAQ

Распаўсюджаныя пытанні аб інструкцыях, рэгістрацыі і падтрымцы гэтага брэнда.

  • Can I disassemble my KOSO gauge for maintenance?

    No. Opening or disassembling the unit yourself will void the warranty. Maintenance and repairs should only be executed by KOSO professionals.

  • What should I check if my KOSO gauge does not power on?

    First, ensure the wiring includes a solid ground and that the 12V power supply is connected. Check if the battery voltage is sufficient (at least DC 12V) and inspect the fuse and wiring harness for breaks.

  • How do I connect the Zenith LED Headlight wires?

    For the KOSO Zenith LED headlight, connect the Yellow wire to the Low beam, the Blue wire to the High beam, the White wire to the Front Position Light, and the Black wire to the vehicle body or engine ground.

  • What does 'LO RNG' mean on my KOSO digital gauge?

    'LO RNG' indicates that the remaining fuel range is low (typically under 16 km or 10 miles). This is a warning to refuel soon.

  • How do I enter the settings mode on my KOSO meter?

    Generally, you must have the key switched to ON, the engine stop switch OFF, and the meter displaying the Odometer. Then, hold both turn signal switches (or the specified button combination for your model) for 3 seconds to enter settings.