748 Low Fuel Light

If you run out of fuel, and the fuel light does not come on, the fuel light does not work.

If the fuel light is always on, even with a full tank of fuel, it's faulty.

Your welcome.

 

It could be either a faulty low level sender, a wiring problem or the fuel light bulb has blown.

When my 998 was new the fuel light did not come on, I found out the hard way as it completely ran out of petrol. A new unit was fitted under warranty. I would start with a bulb and circuit check and then work my way up to testing the sender unit.

 

Sorry, I was very drunk last night. Listen to Red above, he's very clever.

 

Check the connector/wires into the fuel pump under the tank. These can come off/loose. The senders are inside the tank and are a bit crap. Usually needs a new pump assembly,as the sender on its onw rarely come up used. I never rely on mine, I set the trip each fill up.

 

If you have just had it serviced it's possible that the connector has not been seated properly as the tank has been off.

When I put my tank back after draining it and\or for servicing I always put in enough to fuel to check and run the bike and also test that the low fuel warning light is working as it should. Really this could\should have been done at the time of service.

 

I'm not sure checking the sender light would be considered a service item, by all-means ask.
Tank off, you're looking for this, IIRC two different feeds, one for the pump the other for the sender. Should be easy to spot on the circuit diagram.

 

Currently red is sick and I'm waiting for a new torque wrench to turn up, hopefully middle of next week.

Be good to meet before winter hits though.

 

If it was working before the service and not after, that could be a clue...