[Q&A] SBF CB400 Official Q&A Thread 2009 (PLS ASK YOUR QUESTIONS HERE!)

[muzzyfuzzy]

Hi all wondering if anyone can help me...

 

Spec 3, 11 year old bike. Put in key, turn key to right, got headlight and every signal works (including high beam, hazard light) iu also works. Once i press the e-start button, no headlight, no sound. No cranking at all. Hold the e-start button also same thing.

 

Release e-start, all the lights work again. Sometimes if I wait a while keep pressing e-start, will crank and if I lucky it starts. Tonight... Not so lucky, try half an hour cannot start. No way for bike to start. Any solutions experts?

[alexbong]

Hi all wondering if anyone can help me...

 

Spec 3, 11 year old bike. Put in key, turn key to right, got headlight and every signal works (including high beam, hazard light) iu also works. Once i press the e-start button, no headlight, no sound. No cranking at all. Hold the e-start button also same thing.

 

Release e-start, all the lights work again. Sometimes if I wait a while keep pressing e-start, will crank and if I lucky it starts. Tonight... Not so lucky, try half an hour cannot start. No way for bike to start. Any solutions experts?

 

CHECK YOUR BATTERY WITH MULTIMETER SEE IF VOLTAGE TOO LOW MEAN BATTERY GONE. CHANGE IT. ard 12V good. below 10V bye bye battery.

[muzzyfuzzy]

CHECK YOUR BATTERY WITH MULTIMETER SEE IF VOLTAGE TOO LOW MEAN BATTERY GONE. CHANGE IT. ard 12V good. below 10V bye bye battery.

 

Thanks alexbong...

 

I just changed my battery in 5 months ago... could it be another problem that led to the battery not charging?

[alexbong]

Thanks alexbong...

 

I just changed my battery in 5 months ago... could it be another problem that led to the battery not charging?

 

Still, prefer u to check with multimeter 1st. see the reading save the guess work. try spray some WD40 into ur right control switches like engine cut-off switch, hazard light switch, then play on off those switches a bit.

 

Check the starter metor carbon if can. try use something lightly knock-knock it a bit the starter motor.

 

if ur bike still no charge the battery u might want to find mechanic check the alternator.

 

good luck!!

[muzzyfuzzy]

Still, prefer u to check with multimeter 1st. see the reading save the guess work. try spray some WD40 into ur right control switches like engine cut-off switch, hazard light switch, then play on off those switches a bit.

 

Check the starter metor carbon if can. try use something lightly knock-knock it a bit the starter motor.

 

if ur bike still no charge the battery u might want to find mechanic check the alternator.

 

good luck!!

 

Well mechanic changed my rectifier... so far so good. Will update again if any more problems. Voltage still around 12V so I guess that means battery is still healthy.

[piyan89]

hi how do i do a proper run in manually?

[melvismt]

Hi all rider/mechanics

My spec 3 got tak tak tak sound from engine part, what's the problem ?

[Burnout69]

Hi bros,

Quick question, I've been trying to remove the tank from my s4 revo 2010, by looking at the previous posts, there is a cable below which i couldnt remove, any bros can help out?

[Ah Pek]

See image for your further action.

[Burnout69]

[ATTACH=CONFIG]338595[/ATTACH] See image for your further action.

Thanks boss! i"ll give it a try, pretty much everything here is DIY:giddy:

[Burnout69]

hi guys,

Manage to remove the clip and the 2 small tubes, left one big one which i have no idea to remove. Any help please?

[Ah Pek]

hi guys,

[ATTACH=CONFIG]338675[/ATTACH]Manage to remove the clip and the 2 small tubes, left one big one which i have no idea to remove. Any help please?

 

Just squeeze the two end of the green plastic to level the front catch while holding and pulling off the black fuel rubber hose. May have to twist and turn a bit to align..not easy but after many practice..u get the hang of it. There will be some fuel leakage once the tube comes off..so don't panick. Putting back is same..have to align the green plastic with the rubber hose head and push to snap it in..hear a click. If it doesn't seat in right, when u start the bike..the rubber fuel hose will shoot out and fuel will spill endlessly..just switch off to stop it. Good luck.

[Burnout69]

You mean just squeeze the green thingy and pull back?

Just squeeze the two end of the green plastic to level the front catch while holding and pulling off the black fuel rubber hose. May have to twist and turn a bit to align..not easy but after many practice..u get the hang of it. There will be some fuel leakage once the tube comes off..so don't panick. Putting back is same..have to align the green plastic with the rubber hose head and push to snap it in..hear a click. If it doesn't seat in right, when u start the bike..the rubber fuel hose will shoot out and fuel will spill endlessly..just switch off to stop it. Good luck.

[Ah Pek]

The green thing is like a locking clip latch. Squeeze both ends so it straighten and level up with the rubber hose head connector..then pull the black connector.

[amilahetti]

Q. Hi can you please tell me the Head bolt torque and cam cover bolt torque of CB400SF Vtech 2.

[Pluvius]

hi, does anyone knows if cb400 revo have a fan at the front side of the bike like vtec 1,2,3 to cool it down ?

[Asyonkz]

Hello all,

Currently I ride a Spec 2 (2002)

I have questions for the ideal RPM number when idling stop..

Should be around 1000, 2000 or some more thousand RPM??

if unstable it makes the engine sound not good leh..

Unstable RPM for the exactly problem.. Up and down especially when first start-up the engine.

 

And how to fix 'em? Is it bcz the Carb things or any else??

Thanks

Regards

Edited June 7, 2017 by Asyonkz

[Asyonkz]

double post

Edited June 7, 2017 by Asyonkz

[Zhi Ming]

Hi All, anyone knows where to buy the windshield for spec 2? thanks !

[quickster212]

hi guys. i have a 2005 super four spec 3 with 60,000 km on the clock.

 

lately i have been having trouble starting the bike because the HISS light will not turn off. so the starter just keeps spinning, but the motor won't fire.

 

any ideas or suggestions would be super helpful.

 

thanks.

 

quick

[Ah Pek]

hi guys. i have a 2005 super four spec 3 with 60,000 km on the clock.

 

lately i have been having trouble starting the bike because the HISS light will not turn off. so the starter just keeps spinning, but the motor won't fire.

 

any ideas or suggestions would be super helpful.

 

thanks.

 

quick

 

It's likely the software in your key is corrupted..need reprogramming. If you have a spare key..try it. There was a case I encountered like yours from one of the rider in the past that has this problem..the key he use was a spare..but when use original..all is well. Good luck bro.

[Jumpingbeanns]

Hi guys, recently took over a spec 1 . Today i notice there was some leaks on the left near the gear shifter area. Any idea what is it ? EO Leaking ??

 

http://imgur.com/a/1bhmF

[Ah Pek]

Hi guys, recently took over a spec 1 . Today i notice there was some leaks on the left near the gear shifter area. Any idea what is it ? EO Leaking ??

 

http://imgur.com/a/1bhmF

 

No photo..don't think anyone can help you if it's eo or coolant. However..if you had just oiled your chain..it's just over excess oil lube dripping. If you have not, it's your gear shift lever oil seal worn..need to change..15-20 mins job..just have the O-ring seal replaced..cost fro $6 - $12 depending on the shop rental and mechanic pay. If it's coolant..just that your coolant over flow if the coolant reservoir top up is too high when its hot.

[Jumpingbeanns]

thanks for the prompt reply ! hmmi have reuploaded the pictures. Don't think it's my chain since i just change it ..

 

1)

 

 

2)

[Ah Pek]

thanks for the prompt reply ! hmmi have reuploaded the pictures. Don't think it's my chain since i just change it ..

 

 

1)

 

 

2)

 

Did you oil the chain or the mech oiled for you after changing? base on your first photo..could be rusty or contaminated coolant leaking from the coolant ball joint unit or the host. Best bring to experience mechanic like Ah Chong to have a look at it. Check if your coolant reservoir level is dropping after than usual. If possible..run the engine and see where the leak is from and use your fingers to feel if it's oil or water.

Edited July 7, 2017 by Ah Pek