Maintenance & Technical > KX500 Original
Just bought a mint 2003 K5 today, not as much power as expected?? have pics :)
93cbra:
I don't think so. When I bought the bike I ran the it(the filter was dirty) and then cleaned and oiled the filter ( not too much) and it ran the same.
KX5MOD:
Have you treid to beat a 450 on it ???
You should beat a 450 every race fairly easily, & smoke it on top.
If you cannot,,,,,then something is amiss.
Like i said above....you should trump a 450 fairly easily....& that is about it in stock form.
Just abit more noticable power then a 450...............maybe 20% seat of the pants feel.
That is a good running stock K-5.
Polar-Bus:
I see lots of "bling" additions to your 500, this tells me the previous owner has some mechanical abilities. Did the P/O replace the top end? It a very distinct possibility the exhaust valve timing can be a tooth off. This will make the midrange power feel very flat...
I think after checking all the basics, the next step is tearing down the top end for a detailed inspection. MAKE SURE YOU HAVE THE OEM KAWASAKI SERVICE MANUAL FOR ASSEMBLY !!!!!
93cbra:
Thanks, if the power valve gear is a tooth off there's no real way for me to tell is there (I don't think the top end has ever been apart)? The gear doesn't come marked from the factory does it? Or is there a procedure to time it? I really think it's the power valve, bike runs great and has plenty of low end, just lacks top end. Is 155lbs after 5 or 6 kicks normal? Is it normal for the power valve arm to move after about just 500 rpms of throttle from idle?
I went from a 450 (geared real low) to this 500 and the 450 felt faster.
Thanks for the help guys.
barryadam:
If you have been running 32:1, move to at least 40:1 and REPACK your silencer. Prolly full of oil and carbon.
Remove and clean the carb. Really CLEAN it well. Correct the jetting using the jetting chart here.
While the carb's off, put some new reeds on. If you have the coin, get some V-Force IIs. Biggest single improvement for me.
Count your sprocket teeth front and rear. Whaddya got there? Makes a lot of difference in the feel of power vs speed.
There is a lot of good step-by-step on proper assembly of the KIPS both here and in the factory manual. It's really not that difficult.
Post pictures of your work as you go.
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