143°F Thermostat Kit – Fits Mercury/Mariner 135-200HP V6 Outboard Engines (Replaces 75692Q2, GLM 13340) family-yamaha-225txrs seals are replaced during major

seals are replaced during major lower unit rebuilds or every 3-5 years depending on usage and operating conditions

unusual noise from the lower unit

9 – 13200-91D21

and propeller shaft hardware

A: Initial adjustments may be necessary to achieve optimal idle speed and fuel mixture

143°F Thermostat Kit – Fits Mercury/Mariner 135-200HP V6 Outboard Engines (Replaces 75692Q2, GLM 13340) family-yamaha-225txrs seals are replaced during major143F Thermostat Kit Fits Mercury Mariner 135 200HP V6 Outboard Engines This thermostat kit is designed for a wide range of Mercury and Mariner 135200HP V6 outboard engines, including popular XR4, XR6, Magnum II, Magnum III, and various V series models. Primarily fitting engines from the 1990s through the early 2000s, compatibility is determined by specific serial number ranges. This kit serves as a direct replacement for multiple OEM and aftermarket