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4-stroke Question - Hard to start?

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Hi,

I've decided to make the jump to a YZ250. I believe that the YZ250F would be the best flavor for my needs (after much reading and hand wringing). But just as I was feeling pretty comfortable with the decision I ran across some posts and articles that described 4-strokes as "hard to start" when hot, or after a fall. The text seemed to deal with bikes up to about 04 or 05 - is this still the case? Are 4-strokes inherently boogers to start? I noticed, in the features section of the brochure that it has a "hot start" button - is it the "fix" for a dodgy starting system or what?

I'm coming off of a 2-stroke that never failed to start - thus I have little experience to draw on if I get a position where the bike won't start for me.

Thanks

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Yeah, the four strokes we have, an 06 CRF250r (son's) and an 08 YZ250f (mine) can be, and have been hard to start when hot. It can be frustrating. I have at least found that my YZf when hot will usually start with a calm slow kick from top dead center, no throttle. A few times I have had to use the hot start. All that does is lean out the mixture when pulled.

I have found that the closer to perfect you can jet these 4t's the better off you are with starting, hot or cold.

There are things I really miss about the smokers. That's just one.:)

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250Fs are more finicky than 450s when it comes to jetting and starting. My 450 starts firsts kick, and is easier to kick over than my last YZ250 was. But I do see a lot of peope having a tough time getting their 250Fs started in the heat of battle.

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Thanks - that's discouraging news. I suppose you get used to it, and/or develop a fool-proof routine over time...

What concerns me a bit is that at 5'4 I can't straddle the bike. If I'm in a awkward position, like halfway up a hill, and need to start fast I could be in trouble! :)

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Sooner or later that 4 $troke will piss you off starting.

If you've ridden a 2 stroke, I would revisit why you want to leave 2 strokes in the first place ( but I'm biased, lol )

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I spent some time on a yzf 250, 05 I think, and to start it you had to have the throttle pinned or it needed to be bumped started.. My 450 kicks over in less than 5 kicks everytime..

That maqgic button on the ktm would be sweeeeeeet... I heard they shaved off some weight by replacing the kickstarter w/ estart.. go figure?

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There is no doubt that the 250 is harder to start when stalling at high temp. The only thing I have found to work is to take off your helmet and cop a squat for some deep breathing exercises. I have been timing my crf250r with everything as fresh as could be on it and it is best to kick back for ten minutes then to kick yourself into :):D mood. Smell the grass or hopefully your under some shade and just try to let the short time to pass by.

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I spent some time on a yzf 250, 05 I think, and to start it you had to have the throttle pinned or it needed to be bumped started.. My 450 kicks over in less than 5 kicks everytime..

I have an 05 YZ250F and it starts every time, hot or cold, in two kicks or less. I have the pilot, and fuel screw set perfectly, as well as the idle speed at a decent clip.

Cold, I do this:

Turn on gas

Turn on choke

Crack throttle two times

Gently push down the kick starter

Let it come back up, and then give it hell

Works every time. Hot I do almost the same, minus the first three steps. NEVER EVER touch the throttle on a hot, stalled four stroke, or you'll be changing the plug to get it started again.

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2000 yz426 here, starts 1st or 2nd kick every time, hot or cold. There is a trick to 'em but nothing that can't be mastered fairly quickly. There are some videos somewhere on TT that I haven't seen myslef but others have said are very helpfull. Good luck!

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I have an 05 YZ250F and it starts every time, hot or cold, in two kicks or less. I have the pilot, and fuel screw set perfectly, as well as the idle speed at a decent clip.

Cold, I do this:

Turn on gas

Turn on choke

Crack throttle two times

Gently push down the kick starter

Let it come back up, and then give it hell

Works every time. Hot I do almost the same, minus the first three steps. NEVER EVER touch the throttle on a hot, stalled four stroke, or you'll be changing the plug to get it started again.

That's the exact same way I kick my smoker too.

IMO, if you get caught on a hill and it stalls on either bike it ain't fun to kick again. If you're too cheap (like me) get some stall proof insurance (as well as amazing traction). A Rekluse auto clutch for the non e-start non trail specific motors (MX bikes). I've yet to stall it from poor riding habits OR a crash. You can literally only have to kick start your bike once - before you hit the trail if you don't kill the motor during any rest periods you might take.:)

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That's the exact same way I kick my smoker too.

Yeah true I kick our 85 this way as well and it fires every time.

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250_xc-fw.jpg

ebutton rocks... 250XCF-W

I know plenty that hate KTM, but screw the haters... KTM has off-road bikes wired. I LOVE my 450XCR-W. First KTM and likely not my last.

:)

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