[fireboy153]

i snapped a keyway on my 03 kfx 400, and now it is out of time, will not start, and seems to blow back thru the carb, does anyone know how to do this? i dont got the money to get it to a shop, being around the holiday and stuff. if anyone knows, get at me, or is their place online? thaks - lee

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[RCW]

When you say you snapped a keyway, do you mean you snapped the Woodruff key on the magneto side of the engine? If so, the key is under $2, but you will need a flywheel pulling tool to pop the flywheel to replace the key.

Generally when someone loses timing it is because they have not kept the timing chain adjusted and it jumps a cog or two on the drive. If that has happened the repair manual will outline the steps necessary to re-index the camshaft to the timing mark on the flywheel.

 

[fireboy153]

yes, the woodruf key, got a few, replaced it, and now it will not run. it seens to blow fuel and air back out of the carb. it seems as if the fur=el/air mix is not being burnt but being sent bake htru the intake. im not sure of anything with this. i will look into getting a manual i guess. any other ideas?

 

[RCW]

What I would do before I did anything else is pop the sparkplug and do a compression test. If the compression is good, then you are likely just out 180 degrees and moving the flywheel around will solve the timing problem as long as you did not move any ignition components. If you do not have good compression you will need to remove the head and replace the valves.

 

[kjenbg]

well you need to know how to time it if you need help let me know

 

[fireboy153]

well its at a shop for that now, but if it does it again, i would like to know, please tell me if you know anything. that would be great.

 

[kjenbg]

ok here goes on flywheelside of motor take out toptiming plug this will reveale crank position next take off valve cover with timing mark in center of crank timing hole lined up with mark on case your intake cam should be numbered number 3 should be at 12 o clock straight up and down your exhaust cam should be at 12 oclock on number 2 ther should be 15 pins between the two spots where they hit the cams on 3 and 2 count them on your timing chain very important if this is not done correctly it will keep on jumping and can ruin cam gear. i have rebuilt about every 4 wheelere motor out there soi i have the specs for pretty much everything let me know if this helps