How to fix a quad bike handlebar starter

[Siviwe Nkosana]

TL;DR Summary

Installation or a repair of quad bike handlebar starter switch

I am currently facing a problem with my quad bike handlebar starter switch.
When i am turning it on it does humming but it seems as if it is not getting the power to its alternator

 

[Lnewqban]

Welcome!
I would verify that the stater relay is working properly.
The switch may not be the problem if you are hearing that humming sound.
If accessible, you could try by-passing the posts of the starter solenoid in order to see if electricity is reaching the starter motor.
If not, check the fuses and the safety switches.

 

[berkeman]

Welcome to the PF.

Summary:: Installation or a repair of quad bike handlebar starter switch

I am currently facing a problem with my quad bike handlebar starter switch.
When i am turning it on it does humming but it seems as if it is not getting the power to its alternator

Did it ever work for you? If it worked, how long have you had it and it was working? If it's a new switch that you installed, what happened to the old one? Does it have a key lock? If so, why did you have to change keys?

How are the wires joined under that black electrical tape? Are they just twisted, or are they twisted and soldered?

Can you post a link to the schematic for that quad's electrical system? Which quad is it?

 

[Siviwe Nkosana]

Welcome to the PF.

Did it ever work for you? If it worked, how long have you had it and it was working? If it's a new switch that you installed, what happened to the old one? Does it have a key lock? If so, why did you have to change keys?

How are the wires joined under that black electrical tape? Are they just twisted, or are they twisted and soldered?

Can you post a link to the schematic for that quad's electrical system? Which quad is it?

The bike worked completely well for me in the past few weeks

Welcome!
I would verify that the stater relay is working properly.
The switch may not be the problem if you are hearing that humming sound.
If accessible, you could try by-passing the posts of the starter solenoid in order to see if electricity is reaching the starter motor.
If not, check the fuses and the safety switches.

The bike had been working completely well for me, in the past few weeks.
The problem with it has started by the time, there were two desoldered wires from its switch that have 3 wires

Welcome to the PF.

Did it ever work for you? If it worked, how long have you had it and it was working? If it's a new switch that you installed, what happened to the old one? Does it have a key lock? If so, why did you have to change keys?

How are the wires joined under that black electrical tape? Are they just twisted, or are they twisted and soldered?

Can you post a link to the schematic for that quad's electrical system? Which quad is it?

The bike had been working completely well for me, in the past few weeks.

The problem with it has started by the time, there were two desoldered wires from its switch that have 3 wires connected on it.
The switch is some sort of a prong it have three poles or terminal.

First wire is Black with white stripes. The second wire is green,
And is connected in the middleThe third wire is also green and it that goes to the second switch which i guess is a pushed Starter switch, which has two poles with green wire that is coming from the prong switch and there's an outgoing wire that i guess is going to the quad system so that it can start.

The quad is model us Kazuma 80cc quad bike

As for the schematic diagram i am not so familiar with it i actually don't have it i was only taking chances in wiring it and i mma be so happy if someone can tell more on how does it system operates so that I can figure out which wire is supplying the power and so on
NB:This quad doesn't use a key

Welcome to the PF.

Did it ever work for you? If it worked, how long have you had it and it was working? If it's a new switch that you installed, what happened to the old one? Does it have a key lock? If so, why did you have to change keys?

How are the wires joined under that black electrical tape? Are they just twisted, or are they twisted and soldered?

Can you post a link to the schematic for that quad's electrical system? Which quad is it?

The bike had been working completely well for me, in the past few weeks.

The problem with it has started by the time, there were two desoldered wires from its switch that have 3 wires connected on it.
The switch is some sort of a prong it have three poles or terminal.

First wire is Black with white stripes. The second wire is green,
And is connected in the middleThe third wire is also green and it that goes to the second switch which i guess is a pushed Starter switch, which has two poles with green wire that is coming from the prong switch and there's an outgoing wire that i guess is going to the quad system so that it can start.

The quad is model us Kazuma 80cc quad bike

As for the schematic diagram i am not so familiar with it i actually don't have it i was only taking chances in wiring it and i mma be so happy if someone can tell more on how does it system operates so that I can figure out which wire is supplying the power and so on

 

[Siviwe Nkosana]

Welcome!
I would verify that the stater relay is working properly.
The switch may not be the problem if you are hearing that humming sound.
If accessible, you could try by-passing the posts of the starter solenoid in order to see if electricity is reaching the starter motor.
If not, check the fuses and the safety switches.

I would like to know which wire is supplying the power off to the on/off switch and off to the starter pushed button
Basically i want to know how can i know i identity it?

 

[berkeman]

As for the schematic diagram i am not so familiar with it i actually don't have it

I did a Google search on model us Kazuma 80cc quad bike electrical schematic and got lots of hits. Can you please look through the hit list to see if any of these schematics seem to match your quad? Thanks.

https://www.google.com/search?q=mod...U7q6gBw&bih=543&biw=1110&client=firefox-b-1-d

 

[Ranger Mike]

check the battery. never assume the battery is ok. Put the quad in neutral so when the starter runs it will not rotate the gears / tires. I would get a known good battery and set it next to the quad. i would use jumper wires to hook up to a good ground o nquad to negative on battery. take a wire jumper from hot posative post on battery to the starter post. touch it to see if the starter rotates.
if it does , next try the starter solenoid. If the solenoid operates and kicks on the starter then you have a wiring problem between the solenoid and the handlebar switch. my bet is the battery and connections are bad.

 

[Siviwe Nkosana]

check the battery. never assume the battery is ok. Put the quad in neutral so when the starter runs it will not rotate the gears / tires. I would get a known good battery and set it next to the quad. i would use jumper wires to hook up to a good ground o nquad to negative on battery. take a wire jumper from hot posative post on battery to the starter post. touch it to see if the starter rotates.
if it does , next try the starter solenoid. If the solenoid operates and kicks on the starter then you have a wiring problem between the solenoid and the handlebar switch. my bet is the battery and connections are bad.

Seems helpful Buddy i'll take note of your tips.
But i'mma be so proud if i can find an accurate way of wiring that handlebar switch and a bit of brief on how the power travels from the battery to switches

 

[Mark44]

But i'mma be so proud if i can find an accurate way of wiring that handlebar switch and a bit of brief on how the power travels from the battery to switches

As @Ranger Mike said, make sure that the battery isn't the problem. If the voltage is low, it could be that the battery has a dead cell, or the alternator isn't charging it. If the batteries on my motorcycles last for four years, I consider that a success.

From what you wrote, it seems to me that what you're describing is an ignition switch. I found a wiring diagram for a Kazuma 110cc ATV, that seems close to what you're describing. In the diagram the ignition switch has a green wire that goes to ground, and a black and white wire that comes from something called Remote Control. Another wire goes to the starter relay, but the diagram doesn't indicate the color of this wire. There is also a separate starter switch with a red/yellow wire coming in and some other wire going out, with no indication of its color.

A typical handlebar starter switch would be separate from an ignition switch. A starter switch on the handlebar doesn't directly cause the starter to turn. The starter switch (or button) isn't beefy enough to handle the large current draw that the starter needs. Instead, the switch energizes a relay, which causes some heavy duty contacts to connect, and they send current to the starter solenoid. The solenoid extends the starter pinion shaft so that it contacts the ring gear on the transmission (or maybe on the engine).

Here's a link to a Kazuma 110CC quad - https://www.quadcrazy.com/atvforum/topic/7705-kazuma-falcon-110-wiring-harness-diagram/ Hope that helps.