what will happen if no spring in rave valve?

[cckeong]

I lost it when cleaning the valve & I found out no groove on the valve(Both)...another question is how to clean the piston or just the head?my ski was more than 100 hours.I use WD40 spray on it everytime but not sure how effective...

For flywheel maintance should I take out the cover spray some WD40?or wait until it spoil then replace?

[Technical Support]

Re: what will happen if no spring in rave valve?

If you don't replace the spring you will have terrible low end performance. Get a new one. There is never a need nor any product you should be spraying to 'clean the head or pistons'. Why are you doing anything to the flywheel either? As for the slots not being in your valves, you just have the old design, it doesn't hurt anything.