How much horsepower does a 1999 YZ125 have?

How much horsepower does a 1999 YZ125 have?

35 hp
Yamaha YZ125

Manufacturer Yamaha
Class Motocross
Engine 124 cc (7.6 cu in) reed valve two-stroke single
Power 35 hp (26 kW)
Transmission 5- or 6-speed sequential manual

How many hours does a YZ125 have?

We have seen up to 35-40 hours on a YZ125 top end but that’s stretching it a bit far and we wouldn’t recommend prolonging standard maintenance that long.

How does ignition timing affect performance?

Advancing the ignition timing helps raise the high-end power while reducing the low end. It also helps get the spark past the ignition delay and run at peak power. Ignition timing retarding causes the spark plug to fire later in the compression stroke.

How often should I rebuild my YZ125?

With a 125 you will probably be needing to rebuild it more like every 50 hours. Once you get used to the bike you should be able to tell that the power just isnt as snappy as it should be, but its still a good idea to do a compression test every now and then just to be sure.

Are YZ125 reliable?

In ’96 they made some changes that lasted until the end of 2001. These are still considered some of the best motocross bikes, especially the 1999 model. They are fast, reliable, and are just a great overall bike.

How to check stock timing on YZ ignition?

Rotate flywheel clockwise till indicator reads .007″, that should be stock timing, check timing marks on flywheel to stator plate. Loosen 3 screws and line up mark on stator plate to flywheel. Even if your bikes timing is fully retarded it wont feel like a 125, to far advanced and it will likely detonate.

Is the ignition on my YZ 250 off?

After a complete rebuild I believe my ignition timing is off on my 2011 YZ 250. I marked the stator on the edges of where the bolts were to make sure I got it back in the right place. After some riding time the bike just feels gutless on the bottom end.

What’s the best way to adjust cylinder timing?

Community Answer. Set the first cylinder to top dead center on the compression stroke. Set the distributor to fire at the top (this is considered 0 degrees advance/retarded). If you want to advance/retard timing, turn the crank an angle amount equal to what you want, or place a timing tape and use a timing light.

How to set spark plug on YZ ignition?

You can cut threads down on spark plug to get less hieght, or cut and drill a hole in a piece of steel to mount to head stud, then Buy magnetic base to hold indicator, you should have some type of set screw to hold indicator from moving, once that is done find tdc and set indicator to 0.