Flywheel ?

[mudbogginsouthernboy]

Hey guys I want t know what the flywheel does and what the flywheel key or pin whatever you call it does. How do the 2 together work and what will it to if the pin is sheered? How will the quadat and how can it damage thequadif tryed to start?

 

[sparkymichigan]

The flywheel does a couple things. It works together with your stator to make a charging system.
It also works with the pickup coil to let the CDI know when to tell the ignition coil to fire the sparkplug.
The flywheel key prevents the flywheel from spinning on your crankshaft. It keeps the two moving as one piece.
If the key sheers the flywheel will spin on the shaft preventing proper timing.
It can also prevent the starter from spinning the engine due to the starter clutch being mounted to the flywheel.

 

[mudbogginsouthernboy]

Mine sheered and just backfires is that something it could cause too? My quad back fired loud a couple time and then the backfires got quiter is there any way I could break anything in the head?

 

[sparkymichigan]

If its the key then no.
How do you know it's the key?

 

[mudbogginsouthernboy]

Because when I took the flywheel off I forgot to put it back in

 

[alex456123]

Well you need to put it back in!

 

[1998yamahawarrior]

Because when I took the flywheel off I forgot to put it back in

Ya you really need to get it put back in. The flywheel is kind of a press fit, but the woodruff key keeps it in place.

 

[beastlywarrior228]

If your flywheel has moved because there was no key then your pickup could be off causing the bike to spark too soon

 

[mudbogginsouthernboy]

Ok just got a key how big of a job is it to put in

 

[sparkymichigan]

Not bad if your flywheel is loose

 

[mudbogginsouthernboy]

It's not loose

 

[lbjamm]

Remove the flywheel again and set the key in the slot. Line up the slots on tne flywheel and the key. Sometimes it will pop out, but just keep trying til you get it slid on and the flywheel and crank move together. It's easy, you can do it no problem.

 

[beastlywarrior228]

Then use a puller to get the flywheel off

 

[mudbogginsouthernboy]

hey guys ive been trying to put the key in and it wont slide and lock in place can you guys give me step by step on how to do it?

 

[lbjamm]

Put the key in the crank slot, line up the flywheel slot and slide it on. Might take a few tries.

 

[mudbogginsouthernboy]

like it slids behind the splins but when you put the case back on the magnetics pulls it out.

 

[sparkymichigan]

Once you get the key in and flywheel skid on
Take your crank bolt and bushing and snug them against the flywheel to seat it. You don't have to get real crazy with it,
Then remove bolt and bushing and install stator cover.

 

[mudbogginsouthernboy]

Is the bushing the ting when you take the plastic cover off on the stator case the slides on the splines?

 

[sparkymichigan]

That's it

 

[mudbogginsouthernboy]

Ok I'll try it