[atv4life95]

I feel like i'm the only one who has ticking valves...
anyone else have valves that tick really loudly while the engine is running?
I don't think my valves need to be adjusted though because the quad is not showing any of the symptoms of needing a valve adjustment...

 

[YamahaBlue250]

Mine are plenty loud too. Then again mine are like a year overdue for an adjustment. It still runs fine though, I'm adjusting them and changing the oil once it warms up. Then I can clean it up and install all the new stuff I got for it.

 

[edj3663]

Might not be a valvetrain issue, the wrist pin in mine wore out and that made it tick. Take a screw driver and put your ear to the handle end and the other on diff places on the motor. See if you can pin point exactly where it's coming from.

 

[jpw59165]

Mine are plenty loud too. Then again mine are like a year overdue for an adjustment. It still runs fine though, I'm adjusting them and changing the oil once it warms up. Then I can clean it up and install all the new stuff I got for it.

You are adjusting them yourself? How do you access the valves, and how are you getting the piston to TDC?

 

[atv4life95]

What harm can be done to the engine by riding with a worn out wrist pin?
i'm pretty sure it's coming from the valves because ever since I got the quad it always had ticking coming from the top end, but it seems to have gotten louder recently...

 

[atv4life95]

You are adjusting them yourself? How do you access the valves, and how are you getting the piston to TDC?

You have to pull off the front plastics and the gas tank (kind of like when you are going to jet the carb.)
After the tank is off, on the top of the engine you will see a cap on either side that requires a giant wrench to open. This will give you access to the valves to adjust tappet play. I'm sure you can figure out which one is the intake side, and which one is the exhaust side..

On the left side of the crank case (flywheel side) you will see that there are 2 little caps that you need a giant ass screw driver to remove. Under the bigger cap, you will see the flywheel. Use a socket wrench to turn it.
Under the smaller cap, there should be a mark to line up the flywheel to TDC.

 

[YamahaBlue250]

On the left side of the crank case (flywheel side) you will see that there are 2 little caps that you need a giant ass screw driver to remove. Under the bigger cap, you will see the flywheel. Use a socket wrench to turn it.
Under the smaller cap, there should be a mark to line up the flywheel to TDC.

+1

 

[atv4life95]

So is the ticking normal a normal thing with these motors?

 

[twho]

yep

 

[jpw59165]

You have to pull off the front plastics and the gas tank (kind of like when you are going to jet the carb.)
After the tank is off, on the top of the engine you will see a cap on either side that requires a giant wrench to open. This will give you access to the valves to adjust tappet play. I'm sure you can figure out which one is the intake side, and which one is the exhaust side..

On the left side of the crank case (flywheel side) you will see that there are 2 little caps that you need a giant ass screw driver to remove. Under the bigger cap, you will see the flywheel. Use a socket wrench to turn it.
Under the smaller cap, there should be a mark to line up the flywheel to TDC.

I had a feeling those caps were to access the valves. The owners manual recommends .005 to .010 for the intake and .010 to .015 for the exhaust. I was debating on adjusting mine to .008 and .012, does this sound good? My engine only has about 65 hrs on it. I do seem to hear some buzzing, but not alot of ticking, but I am comparing that to a DOHC 16V engine.

 

[mike89fzr]

I noticed my ticking loud too. Had dealer check and adjust valves. Still loud, I think its normal IDK

 

[atv4life95]

I had a feeling those caps were to access the valves. The owners manual recommends .005 to .010 for the intake and .010 to .015 for the exhaust. I was debating on adjusting mine to .008 and .012, does this sound good? My engine only has about 65 hrs on it. I do seem to hear some buzzing, but not alot of ticking, but I am comparing that to a DOHC 16V engine.

Can't hurt to pull 'em off and take a look to make sure everything is okay in there..

 

[bottledgt]

this is hard to tell online. loud to one is not loud to another...

 

[atv4life95]

this is hard to tell online. loud to one is not loud to another...

I know loud ticks.. when you can hear a constant tick through your helmet while accelerating and a pretty high rotation of a screaming engine.. that is a loud tick..

 

[Tye 6.7]

Timing chain possibly warnout tensioner.