Where is the thermostat located on a Yamaha Venturer?
The thermostat design is a bit unique on the 1st Gen. It is located between the radiator and the water pump suction elbow.
How does the water pump work on a Yamaha Venture?
In this position the bypass line is blocked and the small hose from bottom radiator tank is open to flow under thermostat and allow coolant draining with thermostat closed. In order for the thermostat to operate properly the drain must be closed (OFF) under normal operation. The water pump is driven by gear from the engine.
What should the fan temperature be on a Yamaha Venturer?
The 86-93 models use a 2 wire thermo switch that is supplied with power on one wire and when closed sends power to fan on the other wire. The thermoswitch should start fan at ~ 221 F ( 105 C) and stop fan at ~ 208 F (98 C). Pictured here is the 86-93 thermoswitch. Fan operation testing is found in this tech article.
What should the radiator cap be on a Yamaha Venture?
The radiator cap serves two functions. Firstly, to maintain cooling system under pressure (to raise the boiling point of the coolant) and secondly to prevent a vacuum developing as the engine cools down. The standard cap on a Venture is set for 11.4~14.2 psi.
What should the thermostat be on a Yamaha Venturer?
The thermostat is designed to start opening at 176-183 F (80-84 C) and be fully open at 203 F (95 C). The radiator cap serves two functions. Firstly, to maintain cooling system under pressure (to raise the boiling point of the coolant) and secondly to prevent a vacuum developing as the engine cools down.
In this position the bypass line is blocked and the small hose from bottom radiator tank is open to flow under thermostat and allow coolant draining with thermostat closed. In order for the thermostat to operate properly the drain must be closed (OFF) under normal operation. The water pump is driven by gear from the engine.
Why is my Yamaha apex overheating in the snow?
I am looking for some answers on our 2007 Yamaha Apex. My girl and I both purchased these machines new 2 years ago and ever since we have had problems with overheating. This occurs during groomed trails. Once we run through deep snow it goes away. Last year we had the extra cooler added to the rear of both machines.
The radiator cap serves two functions. Firstly, to maintain cooling system under pressure (to raise the boiling point of the coolant) and secondly to prevent a vacuum developing as the engine cools down. The standard cap on a Venture is set for 11.4~14.2 psi.