random YZ250F question....

[Thump_This]

one of my freind bought a brande new YZ250F and we took it out riding today at the track. i have never ridden a 4 stroke dirt bike before and i was surprised about the power it has. anyways, on to the question. his bike has this blac little lever by the clutch and it supposed to be a "hot start" lever. what the heck is that for ?????

[MATTXR250R]

That is the decompression lever

[SirFallsALot243]

4 strokes have troulble starting when hot sometimes. That will make it easier.

[Thump_This]

interesting. so that does what then?

[MATTXR250R]

Opens up an exhaust valve just a tiny bit so the bike is easier to kick over...with an exhaust valve open slighty the combustion chamber is not sealed 100% and does not hold maximum compression.

[Thump_This]

interesting. i did not know that. so, this basically help you not have to jump on the kick start to get the bike to turn over. nice feature. it wouldve helped me this morning when i went down in a hard turn it took me about 3 minutes to get the bike to kick over. technology is wonderful. = )

[Frakke]

Originally posted by MATTXR250R
That is the decompression lever

It depends, if your bike is a '02 model or younger it's a decompression lever! If it's a '03 or '04 it's a hot start lever!! The '03 '04 models have automatic decompression!! The hot start lever close a valve in the carburator so it will be easier too start when hot!!

[hondageek]

it's not a decompression lever, the bike does it automatically, it's a hot start lever. It's kind of the opposite of a choke, it allows the bike to be started easily when it's hot, like after you crash and need to restart quickly. Although I've never had to use mine, crash or not.

[Thump_This]

can he remove the lever ?

[hondageek]

You'll need it someday. Maybe not during winter, but you will need it.

[VET393]

Why remove it? If it is in the way, get a Dr D hot start lever and move it to the throttle side. That is way we have on both our bikes set up. Works like a charm

[Thump_This]

thanks guys. he wanted me to tell everyone here thanks too. he is going to join ATM when he gets home.

[VET393]

Now that's a great choice!!

[MotoMax]

Yep, ATM is the best site ever.

Dealers say u never need it, buts its good to have just in case.

[Satch0922]

Correct..that is the hot start lever. If you ever dump the bike and it is hot you will need the hot start. Yeah it will start without it but if you use the hot start lever you will get it lit in a kick or two. It is imperative when you are racing.

[MATTXR250R]

Sorry guys for the wrong info...I was not aware they changed to a hot start lever in 03.....Thats what happens when you ride a honda and don't keep up to date with Yamaha.

[VET393]

Hey, I had to go look at the owners manual for our 03. Had me wondering

[Frakke]

Originally posted by MATTXR250R
Sorry guys for the wrong info...I was not aware they changed to a hot start lever in 03.....Thats what happens when you ride a honda and don't keep up to date with Yamaha.

That can happen!! I also give the wrong info from time to time, But that's the nice thing about ATM, there's always someone to back you up!! nice isn't it!! Don't worry about it!!