Finishing YZ125X

The final fitments and fine tuning is under way.
Igniting timing complete 1.2mm btdc.2/6/08
Oil for the engine complete.
Fork oil complete. Air canisters tight. Bleed screws tight.


Incorrect parts on this bike as follows.
Hand grips are from a YZD model.
Tyres are not as per factory fitment.


NOS PARTS ON THIS BIKE.
Barrel 1G8
Crank assembly
Piston
Rings
Wrist pin and clips
Needle roller little end
Reed block
Air cleaner tube
Air cleaners
Air cleaner covers
Coil
Plug cap
Fork boots and clamps
Seat cover
Seat foam

ID Numbers YZ 125 X

1G8-008567
1G8-006577
1G8-008187
1G8-008992

www.concourseparts.com.au

Air/Oil Fork service sheets.

These pages will assist in the restoration process of your YZ hope they help. Just click on theimage to view.

Correct Front brake cable layout.

Note the screws securing the cable guide are correct Yamaha item.

Seat trimmed

YZ ---- X almost complete

This project is nearing the end its been fun and challenging.
Last few items are rims seat rear sprocket and the dreaded plastics. Front number plates are not a problem as we have plenty and they fit A1 and look as the orignal.
Rear guards front guards side panel are all due in 2008 as we are going to reproduce them.

Parts required to complete

1.Engine electrical - Located.
2.Rims front and rear
3.exhaust system
4.front forks
5.Seat foam and seat cover
6.Tank decals
7.Handle bars genuine yz x
8. Clutch and brake levers and perches
9. Front brake cable- Located
10 Throttle cable and mounting
11. Air shock decals and covers
12. Tyres
13. Spoke set front wheel
14. Spoke set rear wheel
15. engine oil
16. Air filter oil
17. side cover decals
18.Front and rear guards.
19.Hand grips
20.Wiring clamps alloy- Located
21. Rim decals (DID)
22. Clutch push rod and ball- Located

 

old system

Assembly

Engine Black in 2 pac now on

YZ 125 X Engine assembly

Rim identifaction YZ 125 X

The front wheel pictured below was remove from a YZ125x. It does not have the correct prefix, or does it?
These types of discrepancy's are common, manufactures have all sorts of supply challanges.
Did these bikes come from the factory like this, who knows.
This type of information would only be know by the purchasing officer of the time.





Below photo a pair of DID rims removed
from a yz 125x.

Note the the prefix 1G8R .
The same rim is also found on the 125D.

Rear suspension.

The YZ 125 X has a longer momo shock than a 125 C . The rear swing arm is also different. There is a 30mm difference with the YZ 125 X being longer. Other changes are a chain tensioner and a different chain guide. The chain adjusters are also new for the 125x.
All chain rollers and pivot bolts are the same as a 125C.

Engine paint.

The engine must be painted in a semi gloss paint. This engine will be painted in two pack, just as it was 30 years ago. I am yet to do some experimenting with two pack flat black's on engines. I will post information once I have worked it out.

Engine preparation.

The engine components must be stripped clean and checked for any cracks and misalignments.
Also damage to any sealing surfaces must be corrected now.

Make sure all threads are functioning correctly.
Check engine mounting holes are not elongated.
All seal seats must be undamaged.