Electrical Starter Problems.

[JordStrak]

As a few of you are aware, I've been restoring a Yamaha TZR-50 2003.

I recently discovered that the whole wiring loom needed replacing, so I did so.

I then decided to replace the starter motor and the battery.

My main problem is that the starter won't even turn when under power. The starter relay just clicks.

However, it seems to be a VERY intermittent fault as it works every so often...

I've checked the earth, connections, everything I can think of!! It's really starting to get on my nerves. If someone could offer any advice on what needs doing, PLEASE COMMENT!!

This project is starting to get on my nerves as I've been doing it since this time last year...

Thanks in advance <33

[Tango]

Sounds like it's the starter motor......maybe sticking or worn brushes....or maybe a dead segment on the commutator......

[Valko]

My main problem is that the starter won't even turn when under power. The starter relay just clicks.

 

My understanding is the starter relay solenoid clicks because there is not enough juice to spin the starter. What usually happens is when the solenoid engages it connects to the starter, that in effect makes the power less and the solenoid disengages.

The usual fault is the battery. It may be anything else as well like bad connection.

We can test the theory very easy. Connect your car battery and try. If it starts that will mean the power of your battery is not ok.

[eastanglianbiker]

if you have got a volt meter put it onto the battery and you should have 12volts showing turn the ignition on and press the starter button and see how low the voltage drops if you bought the battery last year when you first started dorting the bike out it could be either flat or knackered

[Chrissb6]

Hi, you say that the starter solenoid energises , so if you know how to use a volt meter see what voltage you getting across the large terminals on the starter solenoid, these terminals are in fact the power supply and switch wire which powers the starter motor. If you have voltage to both of the large terminals when you press the starter button then the fault look likely to be the starter motor. Try this first before you tare down the starter motor.