Daniel

[Daniel]

Hello everyone, back again after a big trip, eventually have gotten some time to work on the Hyosung.

Had to double check the main jets as they look oversized for my bike, might explain why it splutters in top gears on the throttle.

Went down the path of electrics today as high beam was not working, found out I may need a lh handle switches,  I am about to heat up the soldering iron and give it another bash so its road worthy.

Rear brake I forgot about the lower nut off the caliper just spins, no tighter no looser, does not remove, cannot remember how I changed the brake pads like this, though they were changed but the brakes are not working to spec.

 

 

 

[Daniel]

[Daniel]

I found my borescope today and investigated into the spark plug holes of each cylinder, the front one may be hitting onto a valve as there is a silver/ligher circular area on top of the piston.

The rear one is just heavily carbonized, but no detectable contact. Here is a short video of.

Not sure what to do, the second hand motors I am looking at apparently have no history.

[Daniel]

Hi all, today I took off the cam cover on the front cylinder, I set, I think I did, the crank mark for the front cylinder, and attempted to measure the gap on the intake valves.

The intake right lobe is quite out of spec, looking from the front. I need to research this further as am going up to head height in shit at the moment. Even if I correctly measure the gap and if I can remove the shim to replace, it looks quite expensive to get a shim kit 7.48mm of decent quality. Even below 180$au seems a bit expensive.
Has anyone tried to go to a Suzuki dealer for parts and been able to get only shims?? If I can measure them correctly and calculate the shims required.

Also I can get a generic 7.48mm shim kit off Ebay for a third of the cost of quality, no guarantee of fitment, this is all a learning curve for me, as these shims off Ebay are not Suzuki specific. I do not know enough yet about the differences between them ( shims) other than diameter.

Any thoughts, anyone?

 

[Daniel]

Thanks for the reply Marcel, I have had the carby’s apart but did not have a magnifier to see the numbers on the jets, I think your on the right track it may have been jetted for the stainless exhaust.  I know I will have to remove and check, post the numbers and see why it bogs acceleration under load.

I bought a genuine air filter and installed as there was none, I have today seated the airbox properly onto the carby’s first then the intake to the motor. I needed to have some help doing it as yes its tricky to do properly.

The mod you suggested was done already, I thought of reversing it or going the middle 2nd notch on the slide needle top.

Have not ridden today and am having to deal with other things for a week or two, so have to put this project on hold.

[Daniel]

Marcel when tuning the carby’s, what is the process in basic ?

I have tried to bench sync the carby’s the best I could, but the bike really bogs down while riding at 7+ RPM in any gear above 2nd on acceleration. I adjusted the fuel screw while stopping the bike on a ride.  But this what I thought was over fueling on acceleration and screwed in to about 1 full turn from seated in, it ran a bit better, better rev’s higher and smoother. It must have been very lean. Its still not rev’ing right up.

I have just made the fuel mixture screw 2 1/2 turns out for now,

What other adjustments can I make?

 

[Daniel]

 

The first pic is of the old girl, with added brake fluid burns on the tank, add that to my list.

2nd pic is of the fuel mixture screws, I just readjusted them to 2 1/2 turns out, talk about that latter

3rd pic is mostly irrelevant, though shows the easier cct to get at.

4th is the old plugs which I have already replaced, and I failed to order valve stem seals, so my bad.

[Author]

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