Yamaha Aerox Problem

 

On an 02 aerox, when you turn on the ignition, should the oil warning
light be illuminated? On mine it is, however I am not getting any
response from pushing the starter button and there is no spark on the
plug when kicking the engine over. There is plenty of oil on the tank,
however i am i bit suspicious of a problem with the oil pump.

Any advice apperciated.
Matt.

 



sounds like 2 problems that may be one.
very carefully check your electrical system.
fuses, wires, etc.
the oil light goes out when the engine starts but no spark
means electrical. try a new plug first, obviously, then
start trouble shooting.

 


Matt wrote:

The paragraphs below describe how my FZR-1000 works. It's typical of
Yamaha's crazy electrical engineering. When the Yamaha engineers added
all that "safety interlock" crap, they just made their machines less
reliable, IMO...

Yamaha uses an oil level warning light with a float switch in the
bottom of the engine, instead of an oil pressure light. Typically, the
ignition control until will test the oil level warning light for a few
seconds when you turn the ignition key on, then the light will go out.

The oil level light won't come on again until the oil level is low,
and, if you use 20w50 oil instead of 10w30 oil, the float switch sticks
and the light fails to come on even though the engine is half a quart
low on oil. :-(

No response from the electric starter probably has to do with the
ignition safety interlock circuit mandated by the Department of
Transportation. Since they think that riders are too stupid to fold up
the sidestand before riding away, there's a sidestand safety switch
that disables the ignition circuit. And, there's a clutch switch and a
neutral switch and a few logic diodes built into the master electrical
power relay on Yamahas.

Typically, when you turn the ignition key on, you'll hear the master
power relay click once, the oil level light will run its test and then
go out, and, if you pull the clutch lever in, you can start the engine
in gear if the side stand is folded up.

There are actually *two* relays in the master power relay that Yamaha
uses. The other relay is a starter solenoid enabling relay. The
sidestand, clutch, and neutral switches all have to be in the right
position, or the solenoid enabling relay doesn't work and the starter
doesn't crank the engine over.

Or, if the transmission is in neutral, the engine will start with the
sidestand down, so you can warm up the engine while standing beside the
machine putting your helmet and gloves on.

But, if you get on the machine and put it in gear with the sidestand
down, the engine will shut off to keep you from stupidly riding away
with the sidestand sticking out in the breeze.

So, the first thing to do is check out the sidestand switch to be sure
it's working right, and work the transmission through the gears to make
sure the neutral switch works right, and check the clutch switch.

 


sheesh, think i'll stay with my low tech sr's and yr1.
i had a honda bg500 for a while and the side stand swicth
drove me nuts. it went bad and i finally fired around it.
that should help the guy a lot...so good answers.

 

Is it in gear when trying to start it?  If so, try putting it in neutral.  
My XJ lights the low oil lamp when I have it in gear, and try to start the
bike...  Gotta be out of gear.

G'Luck!
Rex S.