Not sure if fan is working but bike doesn't overheat ? How do I check ?

the fans should turn on when coolant is hot , I would go to a motorcycle electrician

Have the radiator checked for blockage and replace the thermostat. If the above doesn't cure the problem you may have a leaking cylinder head gasket

No this wont cause an overheat problem. Check the coolant level , check to see if the fans come on after it heats up. when the car is warming up you can check the thermostat, by touching the top radiator hose, after a few minutes the hose should get hot, this indicates that the thermostat opened up and is working. If it doesn't replace the thermostat. If it doesn't over heat until you start driving , then suspect the water pump. The impellers can slip on the shaft and not have enough flow to keep it cool.

Three quick ideas. Make sure the vehicle sits overnight and check the radiator fluid level
in the radiator itself. If it gets low you will get an air pocket causing overheat. Also check
the reserve tank to be sure it doesn't have a crack or a hose fallen off which would cause an air pocket in the engine block by emptying fluid instead of recirculating. There
should always be fluid in the reserve tank.

Second, radiator cooling fan not coming on. If your air conditioner is not working well at
stop lights, then this is usually the culprit, since the fan helps to move air across the air conditioning coils. Everybody replaces relays but generally it is the motor becoming intermittent, since they are open framed and exposed to the elements.

Third is the thermostat may be stuck in the closed position, which will cause overheat.
Hope this helps.

This is a thermal switch, located on the radiator, the wires from the fan will be looped into this, normaly located to one side in one of the ends, if you have a switch on the radiator it will have 2wires bridge these together with the ignition on taking care not to earth any of the wires out, and the fan should come on, i presume your temp gauge is working correctly, and you have coolant in the system, check when cold the level of coolant not in the bottle but in the radiator, also check the fan turns manualy by hand and if you have a fuse covering the fan that it is in good condition

There is well-established procedure for trouble shouting the over heating.
Does the car overheat in driving mode?
Yes.
Are you losing coolant?
No. Check water pump (including belt) and thermostat.
If yes make a radiator compression test. You might have a bad cylinder head gasket.
The car doesn’t overheat in driving mode, but overheat in idle.
Does the fan runs?
No.
Check the fan assembly for a bad motor, loose fan blades, or bad connector.
Check the codes for a bad temperature sensor.
Check cooling fan relay and fuse.
If this isn’t enough to solve problem, then send the car at dealer for a “check and advice”.

hey, just finished huge ride across europe on one. Look at radiator and water pump, check oil levels and type of oil used. sounds like a blockage in water pump and or, radiator or hoses. Check electrical fan is running after bike stops? If fan is not working the bike will over heat as it requires fan to draw air trough the radiator constantly. Terry Tourer Australia

Check to make sure the radiator fan is coming on watch it for ten minute as it runs it should come on if it doesn't replace the fan relay or the fan coolant temp senson located on engine block upper area of engine.

Check rad fan relay & or fuse under hood in fuse/relay box on drivers side fender area. Map is on underside of cover.

check the RAD FAN is working when bike is up to heat, fan should be kicking on at 220f 105c

also thermostat switch in rad and relay are working