Motorcycle engine cooling system Honda CB400SF/1 (1992-1999)

Checking the coolant level
It is recommended to check the coolant level every 1000 km. When operating in peak conditions (motorcycle use in competitions, highway driving at high speeds, air temperature above 25°C) - more often. Attention! The coolant level is checked on a...

Checking technical condition
During operation of the motorcycle, it is necessary to properly handle the coolant to prevent it from freezing, engine overheating and corrosion. Use only high quality ethylene glycol antifreeze, which contains corrosion inhibitors and is...

Coolant — replacement
The coolant must be replaced every 12,000 km or every two years, whichever comes first. The total volume of liquid in the cooling system is 2.23 liters. The standard antifreeze concentration is 50% when using an ethylene glycol-based concentrate....

Expansion tank — removal and installation
To remove the expansion tank, you must first remove the right side trim (see « Side trims - removal and installation »). If the coolant is completely drained from the system, proceed to remove the expansion tank; if the system is full, it is allowed...

Thermostat — check without removal
The purpose of the check is to determine the absence of coolant circulation in the radiator (the engine is cold) and the presence of circulation on the engine warmed up to operating temperature. While the engine is cold, the thermostat is closed,...

Thermostat — removal and installation
To remove the thermostat, you must first remove the seat (see « Seat - removal and installation ») and fuel tank (see « Fuel tank - removal and installation ») and drain the coolant (see « Coolant - replacement »). Removing 1. Disconnect the...

Coolant pump — removal and installation
To remove the pump, you must first remove the drive chain sprocket cover (see « Drive chain - replacement ») and drain the coolant (see « Coolant - replacement »). Removing 1. Loosen the hose clamps of the coolant pump hoses with a Phillips...

Radiator of the cooling system — removal and installation
Removing To remove the radiator, you must remove the motorcycle seat (see « Seat - removal and installation ») and fuel tank (see « Fuel tank - removal and installation ») and drain the coolant (see « Coolant - replacement »). 1. Turn off the clamp...

Radiator fan — removal, disassembly, assembly and installation
To remove the fan, you must first remove the radiator and fan assembly from the motorcycle (see « Cooling system radiator - removal and installation »). Removing 1. Using an 8 mm wrench, unscrew the bolts securing the fan to the radiator frame. 2....

Fan on sensor — removal and installation
Before removing the sensor, it is necessary to drain the coolant from the system (see « Coolant - replacement »). Removing 1. Disconnect the connector from the fan on sensor. 2. Using a 24 mm spanner, unscrew the sensor. 3. Remove the sensor and...

Coolant temperature sensor — removal and installation
To remove the sensor, you must remove the motorcycle seat (see « Seat - removal and installation »), fuel tank (see « Fuel tank - removal and installation ») and drain the coolant (see « Coolant - replacement »). Removing 1. Disconnect the connector...