Maintenance & Technical > KX500 Original
Whats the best way to start the 5 hundie ?
BDI:
I have seen rebuilt bikes spin the flywheel on the crank more then once do to the flywheel not being torqued good.You will get a few rides out of it and then the flywheel spins, usually when you are trying to start it for some reason. Just a thought. Have you checked for compression :? if a kx500 will not start there is something wrong. I myself am not a fan of bump starting, It should start on its own inside of three kicks.
Friar-Tuck:
Del,
This may be a longshot, but I have a friend who went through everything on his '99 Kx5 much the same as you are.
Jetting,float height, spark,kill switch, fuel. and the dern thing would just pop,pop pop...
He Bought all new ignition parts on e-bay and when he went to replace them he noticed the
woodruff key on the flywheel broke and every once in a while the bike would fire close enough to pop but wouldn't run.
Like I said it may be a longshot.
A fellow in the 250 threads had a similar problem with his flywheel/magneto going out. He ended up re-building the whole engine, the only thing left to replace was the flywheel. Replaced it and she lit right up.
I'm not for sure this will work, however it may relieve some of the pressure 'till you get the starting issue figured out.
A few of the serious engine guys here came up with a modified bolt for the KIPS Valve.
Long story short, I'm thinking if you unscrew the KIPS bolt and put a few washers on it it should allow your exhaust valve to over-rotate and "Leak" some compression out the exhaust valve.
I know what it's like to have 2stroke 500 foot. I ruined a brand new pair of a-star 6's in two days when I got my CR5. I probably could have destroyed it in one, but I was too out of shape.
Best of Luck,
Tuck\o/ EDIT BDI posted above as I was trying to send my reply..... maybe there's something to it :wink:
tharden:
Checking the flywheel is a good start. I work on other two cycle engines and the symptoms also sound like low compression or an air leak. If you can, it is always good to pressure check a two cycle engine. If you check the compression for a stock kx500, it should be around 164psi; and figure 130-145 for mid-life, and less than 130psi I would freshen the top end back up.
Hillclimb#42:
Reeds been inspected? Timing mark? Be sure no mouse nest in pipe, wasp nest, anything. Whats the air filter look like? Fresh fuel right? It pours from petcock freely? I like clear fuel lines.
Also try with slide open 1/4 to 1/2 way, maybe all they way open if you think its gettin that much.
kxdel:
Yes it has fresh fuel, carb was off tonight and hot tanked, reeds were inspected and it's being kicked like I stole it, but still no start. I pulled the cover off and inspected the flywheel (it seems tight) but i can't see the timing marks. Does the flywheel need to come off first? As for the key, I'm not sure. I got a hold of a friend of mine about a puller and he has 1 that I can borrow. It does seem more and more like timing to me so hopefully I can remedy that or rule that out tomorrow. I haven't looked in the pipe or checked compression as of yet. Maybe I should just disassemble the whole thing and start all over. I greatly appreciate all of the input so keep it coming and hopefully someday before the snow flies, I can get a good ride in. Thanks again, Dan
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version