JOHN: Hello, John Talley here with Partzilla.com, and we've got an important visitor here in
the studio.
This is Scott Champion, and he is riding a 2018 YZ450F in the supercross championship
this year, and he's actually riding for Partzilla.com.
Listen, I see your machine, it looks like it's ready to rock, but I heard you had a
little bit of a problem down in Tampa and you had to borrow a few parts off your practice
bike.
SCOTT: To say the least, yes.
I had a couple crashes this weekend and ended up putting a hole in the side case cover and
a couple of other things.
The fuel pump went out and the throttle cables were destroyed, so, didn't get too far with
that situation and we had to take some parts from the other bike.
JOHN: So that explains why the bike over on my bench looks a little rough.
SCOTT: Yeah, we'll come check it out.
So this is the practice bike we had to use some parts.
JOHN: Yeah, she looks like she's been skinned back a little bit but you've told me what's
wrong with this one and I'll tell you what, I think I can help you out on this, Scott.
I'm going to send you to the practice track just on your regular race bike if that's alright.
You leave this with me for today and tomorrow, I'll get the parts ordered and get her put
back together and then I can get you back on the road to Atlanta by tomorrow evening.
SCOTT: John that would be awesome.
JOHN: Sound like a plan?
SCOTT: Thank you sir.
JOHN: Alright guys, give me a couple of minutes to go in and get these parts ordered, then
we'll meet back here tomorrow and get Scott's practice bike put back together.
So let's go.
Alright guys, for what I'm about to do, I'm going to put this at a skill level two, but
just barely.
It's not going to be that complicated, I don't believe.
Let's go through some of the tools that I'm going to need to pull this off.
On the socket side, just an 8 and a 10.
On the Torx side, just a T25.
On the Allen, we need a 4, 5, and a 6, and then especially this big 14.
Probably a needlenose pair of pliers, a couple of different of extensions for the ratchet,
and a 10mm wrench.
Now as far as the parts go, listen, this is several projects rolled into one.
So we'll list out the ones that we used on this, but whatever you need for your machine,
come check us out at Partzilla.com and we can get you taken care of.
So, once you've got your tools and your parts together, we can go over there and get this
thing fixed up for Scott.
Alright guys, we've sent Scott off to the track this morning, so we're going to start
by replacing the fuel pump.
Before we pull this, let's mark it so we get it back in the same position.
Just a 4mm Allen, so there's going to be six of them.
I mean Scott doesn't know what happened to the fuel pump, so it quit working, evidently.
They pulled one off the bike, the entire tank and everything, and then it started working.
So, evidently it's the fuel pump.
Alright, let's see if we can get this thing shimmied out of here.
Got to love the smell of race fuel.
Oh good grief, what an impact.
This is actually broken.
The assembly is broken right there.
That took a hard hit to actually snap that on the inside of the tank.
Wow.
When I was moving it around I thought I heard something, and yeah, there is something inside.
I would imagine that this was part of the fuel pump at one point in time.
Alright, let's go ahead and grab a new one, and I want to replace the O-ring that seals
it to the bottom of the tank as well.
It's got a flat edge here, and that's gonna go down and the beveled edge heads up.
Well, it you're holding it upside down.
Looks like she's seated down.
Let's go ahead and get her in there.
Still go our marks lined up, just bolt it back down.
Alright, let's get this reinstalled.
Go ahead and make your connection for your fuel line before you slide it down in, otherwise
you're not going to have enough room to make the connection.
Want to pull this red section back, and then as you're bringing the tank in, go ahead and
make your connection.
Push it all the way down and then push the red in to lock it.
Now, you can slide it back into position and the front just has two little sections protruding
out on either side and those lock into place.
Now, all you have to do is make the electrical connection and it is just a single plug.
Push it until you hear that click and then you're good to go.
Now, we can go ahead and bolt it down.
Only one bolt in the back.
Typical motocross bike, all about being able to take things apart and put them back together
very quickly.
Alright guys, we've got the tank mounted down, let's go ahead and drain the oil out of it.
That oil hasn't been used at all.
We're not going to have to worry about the filter.
Before we pull that side cover, let's go ahead and disconnect the battery.
Alright, let's go ahead and get this cover off.
Notice this one at the very top actually has a copper washer behind it, so you want to
make sure it goes back in the same place.
I suspect that they just laid the stator inside the cover and didn't remount it.
Yeah, that's what they did.
Now let's see if we can pull the stator out of here.
Alright guys, we've got our gasket, got our cover.
I'm just going to work off a stand.
I've got the stator and the pickup coil mounted, then we can go ahead and mount this to the
case.
It's important when you're putting these back together, these three bolts and these two
pickup bolts that you use some red LocTite on them.
Very important to do that.
Alright, let's go ahead and get them back in.
Alright, next, we're going to go ahead mount our pickup coil.
What you want to do is drop this wire down below it and then put it in like that.
Make sure you've got some red LocTite on your bolts and get them snugged down.
Next, before we put that little plate on, we want to add in a little bit of Yamabond
just to go around this groove to make sure it gets a good seal.
It doesn't take much, just right around there.
Just push that down, and we can bring in our plate.
This little small one right here that just holds the wires back, it rides in that little
groove.
Sits in there just like that.
Alright, all we need to do now is just grab the gasket and get it bolted to the machine.
Now remember that rotor's got magnets in it, so it's going to try to pull in.
Don't let it pinch your fingers when you go to seat it.
Alright, let's get our bolts back in there.
There was one that had this copper washer on it, it goes where the arrow is up top.
And you have two that have these little cable holders and they go where these two protrusions
are.
Alright, let's get those snugged down.
Then wrap that around that wire.
Alright, we just need to get the inspection covers back on, then we can put in the drain
plug and then fill it back up with oil.
Alright, now we can go ahead and get our drain bolt back in.
Make sure the crush washer is still on there.
Now personally, you know that I like using OEM parts and products and lubrication, etc.,
etc.
This particular rider likes using this particular brand of oil, so, that is what we're going
to put back in it.
And we did not change the filter oil filter so I should be able to fill it and just look
at the site gauge to get it back where it needs to be.
It only wants about a half a liter, I think about 650 ccs.
We're getting real close.
Let it settle, and then keep going.
That should do it.
Alright, next, let's go ahead and get on his shifter.
On the end of the shift shaft and on the shifter itself you'll have a dot, and those are the
two that you want to line up.
Alright guys, got the filler plug back in place, now let's hop up there and take care
of that throttle.
So let's start lining this up and then you want to take this forward cab;e and bring
it around the bottom.
Right there, get it in the groove, bring it to that point.
We'll take the backside, and go ahead and lay that cable in place into it's holder.
Hold that together, bring your second cable around, through that slot.
Bring it up and it's actually going to be facing into the other one.
Then we're going to take the back half, hold it all together.
Quickly.
There we go.
Rotate it toward me, go ahead and get those two Phillips head screws started, and we'll
tighten them down here in a minute.
Alright, push it all the way in.
Pretty much had this vertical.
Go ahead and tighten the bottom one first.
Do your final adjustment, then tighten the top.
Make sure that isn't pinched anywhere, that little plastic guide, and we're good to go.
Now I shouldn't have to any throttle adjustment because all of that was the way it was when
it was taken apart.
All we did was put on a throttle grip.
But there should be just a little bit of play, not much.
Maybe about a third of a millimeter before it engages.
Now that's pretty much what she's doing, so it's ready to pop that throttle body.
Next, pull this around and that covers it back up.
Next, we need to get his start button reinstalled, and I'm going to go ahead and take off this
front cover or at least get it out of the way because it has to be routed around the
front of the steering head.
Alright, where it's going to end up is flush against this, just butted up right next to
it.
What we're going to use is these two little brackets.
On the bottom one, that's where you want your thread to be.
So I'll hang it in there like that.
Now we need to just pinch that over the bar and get a screw in there.
Now we've got it started enough.
Bring it up, turn it to about right here, get it parallel with this surface on the throttle.
Make sure it's easy for him to get his thumb to.
Go ahead and tighten it down.
Now, they want it to come down is across here, through the holder over here on the left side
of the machine.
From this point, it raps around and makes its connection right under this flap to this
plug right up under here.
Now let's get a couple zip ties and zip tie it in place.
You want it right up under here, on the bottom of the handlebars.
And then one down here.
Go ahead and get this mounted back up.
Alright, that's in place, this cable's right.
We do need to push this back up.
Alright, it's almost starting to look like a motorcycle again.
Pretty much all we've got left is just to get this side air dam back in and get the
seat on.
This is actually the intake for the airbox.
Get our airbox cover on, your breather hose in.
Let's go ahead and connect up our battery.
Let's get the seat popped back on.
Well alright guys, that wraps this one up.
All we have to do now is turn it back over to Scott.
Well alrght Scott, we've got your machine put back together, already loaded up in your
van.
But before you leave, I want to send out a few things with you, because I know competing
at your level you must be going through a lot of parts.
So I'm going to go ahead and set you up with cables, power items like your sprockets and
your chain, oil filters, and everybody cares about fenders.
But beyond that, something a little bit special.
Competing at your level, you need every little bit of power you can get out of this machine.
So I'm sending out this polished and ported and ported head along with the matching cams
and then a high-compression piston to really get that bike singing.
SCOTT: Yeah, that bike is definitely going to be ripping hole shots now so I defintely
appreciate all of this and, wow, this is a lot.
Thank you guys.
JOHN: Not a problem.
Glad to do it, glad to be part of your team, to so speak.
SCOTT: Appreciate it.
JOHN: Good luck this year, and we will see you out at the track.
SCOTT: Appreciate it JOHN: alright guys, thanks for watching, and
we will see you in the next video.