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

[Infernalwar]

Aiyah, meter still can wait mah, at least no damage to your engine and the important parts. Haha...

[pohheng]

Aiyah, meter still can wait mah, at least no damage to your engine and the important parts. Haha...

 

not cheap to repair the meter thou. LOL

[coldblizzard]

I see I see. Well, perhaps for the time being I guess I'll just get a can of chain lube and do manually, just spray.

 

When I'm richer I'll invest in a scottoiler I guess. =/

 

Thanks guys for the input!

[lemont97]

hey guys. got a question. recently i change my spark plug as i tot my "sudden lost of power" after moving off is because of foul plug.. but surprisingly, the plugs are ok but however, the 2 inner plug both left and right has sign of EO on it.. the mech say is maybe the EO leak into plug compartment due to the rubber seal (or similar) on the engine is broken/loosen. he comment it is not ugent.

 

can i ask if the plug has sign of EO on it, it is important to service the rubber seal thingy?? coz after i chage plug liao, the "Sudden no power when moving on from stationary but after throttle more.. the power come back" problem still there. is my problem due to the EO leakage?

[Infernalwar]

Guys, where can I do on/off button for headlight?

[kickarse]

Don't be fooled by such sales gimmick..just a sales strategy to me (IMHO). Two wheelers don't need wheel balancing much like four wheelers. What is the use of balancing two wheels with a new tyre when there is nothing wrong with the rims? After 3 months, new tyre become 3 months worn tyre then what?..balance again?...ha....x3!

 

You only need to do it ONLY when your rim has mild dent or damage which affects rotation speed of tyre weight when at certain speed. You do this only when you don't have the budget to change to a undamaged rim.

 

thx ah pek! in dat case then i go LAB to chg my tires since its cheaper there.

[steel_headz]

Guys, where can I do on/off button for headlight?

 

Tat one u can get at any bikeshop cost about 15 to 20+ plus installation.... if im not wrong

[ahpeoe]

Hi Folks,

 

Recently I experience intermittent electrical failure from S4 Spec 3. I can see my speedometer suddenly drop to zero, stays for a while and jumps back to the travelling speed again. Every drop to zero, there is drop in power and resume when the speedometer jumps back. This "jumping" keeps reoccurring especially when the bike speed picks up to constant on a highway.

 

I just changed my battery and rectifier because of this symptoms, but the problems still persist. Can anyone advise if have the same experience before? I can't catch the problem now because it is intermittent.

 

Thanks in advance to all kind souls who can help me.

[pohheng]

Hi Folks,

 

Recently I experience intermittent electrical failure from S4 Spec 3. I can see my speedometer suddenly drop to zero, stays for a while and jumps back to the travelling speed again. Every drop to zero, there is drop in power and resume when the speedometer jumps back. This "jumping" keeps reoccurring especially when the bike speed picks up to constant on a highway.

 

I just changed my battery and rectifier because of this symptoms, but the problems still persist. Can anyone advise if have the same experience before? I can't catch the problem now because it is intermittent.

 

Thanks in advance to all kind souls who can help me.

 

 

bro. think ur sensor should change aready. price around $90 . that sensor u got to take down fuel tank to change. hope this help.

[ayie125z]

hey guys. got a question. recently i change my spark plug as i tot my "sudden lost of power" after moving off is because of foul plug.. but surprisingly, the plugs are ok but however, the 2 inner plug both left and right has sign of EO on it.. the mech say is maybe the EO leak into plug compartment due to the rubber seal (or similar) on the engine is broken/loosen. he comment it is not ugent.

 

can i ask if the plug has sign of EO on it, it is important to service the rubber seal thingy?? coz after i chage plug liao, the "Sudden no power when moving on from stationary but after throttle more.. the power come back" problem still there. is my problem due to the EO leakage?

 

bro my bike also like that.. but so far i tried other s4 is the same... so i guess its common?

[ahpeoe]

bro. think ur sensor should change aready. price around $90 . that sensor u got to take down fuel tank to change. hope this help.

 

Hi PohHeng,

 

Thanks for your advise. Do you know what that sensor called or what it controls?

 

Thanks

[pohheng]

Hi PohHeng,

 

Thanks for your advise. Do you know what that sensor called or what it controls?

 

Thanks

 

bro, think u go to the bikeshop u explain to the mech. the mech should know, i forget wat sensor is that, but i remember u got to take off the tank inorder to change it. price is around that range.

[lemont97]

bro my bike also like that.. but so far i tried other s4 is the same... so i guess its common?

 

huh? that mean no cure ah?

i mean the lose power while moving off from stationary and regain power after throttle more

[Ah Pek]

huh? that mean no cure ah?

i mean the lose power while moving off from stationary and regain power after throttle more

 

Your carb's jetting may be non standard. Also, possible your electrical load provision is not constant. Does your bike has proper grounding?

[Infernalwar]

I think it's caused by your carb jetting also... = )

[MrIce]

if carb jetting not standard change back exp ?

[Infernalwar]

if carb jetting not standard change back exp ?

 

Just change the jetting pin will do... About cost I'm not to sure bro...

[MrIce]

jet kit include what kind of jet ah ? main jet , jet needle, needle jet and idle jet ?

[ahpeoe]

bro, think u go to the bikeshop u explain to the mech. the mech should know, i forget wat sensor is that, but i remember u got to take off the tank inorder to change it. price is around that range.

 

Thanks Bro.

[lemont97]

Your carb's jetting may be non standard. Also, possible your electrical load provision is not constant. Does your bike has proper grounding?

 

yes. i think u saw my bike before. just tat u don't know who am i.. haha.. you help my bike ex owner do the grounding.

 

Carb jet non standard?? hmm how do i know or check? Coz i remember it was fine before. so no problem while riding at all.

Edited April 21, 2010 by lemont97

[kano]

Your carb's jetting may be non standard. Also, possible your electrical load provision is not constant. Does your bike has proper grounding?

 

 

 

how ah pek if install dyno jet will encounter this prob bo>>>???

[army_ncc]

huh? that mean no cure ah?

i mean the lose power while moving off from stationary and regain power after throttle more

 

hey bro, is it like the bike got no power when you move off? then you close throttle and open again, then got power?

[ayie125z]

hey bro, is it like the bike got no power when you move off? then you close throttle and open again, then got power?

 

mine not like tat leh.. mine if i let go clutch alot and throttle more can feel like the bike wanna die then it comes back to life.. in short the response is slow... unlike 2b 4 stroke bike the response is fast...

[Guest johjoh]

mine not like tat leh.. mine if i let go clutch alot and throttle more can feel like the bike wanna die then it comes back to life.. in short the response is slow... unlike 2b 4 stroke bike the response is fast...

 

im riding a s4 spec2 too and facing the same prob as you. whenever i move off from traffic lights..let go clutch and and throttle, will alwaes feel a momentary lag before the bike regain power and zoom.. prob with grounding as i seen in earlier posts? sorry im noob to s4.

[Infernalwar]

Hmm... Mine too. When stop at traffic light, moving off, release clutch and throttle, like "bobok"(bike dying) like that. But this seldom happens. Just once in a while... Why ah? Why ah? Why ah?