Koso Mini 4 A/F ratio gauge

Koso Mini 4 A/F Ratio Meter

This meter has been specifically designed to help tune the carburetor or fuel injection system on 4-stroke engines.

Its built-in battery allows for easy switching between engines without disconnecting any cables. If the tool is permanently installed on an engine, simply connecting power to the indicator will provide a nice backlight.

This mini air/fuel ratio indicator is the perfect tool for 4-stroke engine enthusiasts!

Specifications:

• A/F Ratio R: 12.2~17.2 / U: 0.1
• Meter dimensions: 69.8 x 34.4 x 17.2 mm
• Meter weight: 47.6 g
• Effective temperature range: 14 ~ 140 °F (-10 ~ 60 °C)
• Backlight: 12 V DC
• Meter power supply voltage: DC 12 (battery)
• LCD power supply: CR 2032
• Battery life: ± 450 H
• Meter standard: JIS D 0203