CB250RS question.

I know I must be doing something wrong......
When I collected the CB250RS from the seller he started it and rode it
up the ramp onto my van. Since then it has not been started, I just
pushed it into the back garden and started fettling.

I finally got it all back together today, new battery, new chain sprockets
clutch lever, choke cable etc.
The indicator wiring was totally screwed up, fixed thanks to the Haynes
BOL wiring diagram.

None of the above should have affected the starting so it should just
happen.

What is the technique ?, the kickstart is connected to a fancy decompresser
thing, not sure how that works. Do I have to hold in the clutch or
something daft like the GS500 ?.

It seems I need a step by step idiots guide from a CB250RS owner.
TIA.

 

Are you seeing a spark? smell of petrol? petrol on the plug nose? ISTR
the plug's very easy to get at on these bikes.

The decompressor cable actuates off a cam on the kicksart shaft. The
cable runs to a widget in the cylinder head that prevents one of the
exhaust valves from closing fully.

On my bike the decompressor cam follower was broken and the cable
seized: never got round to fixing it.

The only time my bike refused to start at all was when it suffered a
CDI box total presence failure: some bastard had nicked it.

 

can't see why you'd need a decompressor on a 250 unless you're a
featherweight.

 

Honda. User-friendly design, at a guess.

 

probably designed so that skinny 17-y-o yoofer in days of yore could start
it. ISTR the 250RS goes back far enough to be in the "250cc learner
machine" bracket.

 

Indeed, but it could also make life easier for an old fart with a dodgy hip.
I will be having another go at figuring it out today.

 

Thus spake Austin Shackles () unto the assembled multitudes:

Hah! Bunch of softies. I used to kick-start my Tiger 650 while still in
the saddle, if the motor was warm. ;-)

 

Yebbut brit twins are easy to kick over. Try an old 500 single..
Mark

 

And I used to kickstart a Big Vin (Lightning internals) without using
the valve-lifter.

TAAAW, Triumph Trophy, Clubman's Venom, KTT, etc, and lots of old Ajays
and Matchboxen...

And once spent an afternoon jumping on the kickstart of a 990cc AJS
V-twin (and it didn't fire once...)

And there's a valvelifter on my RS...

 

The message

Go on. Find me one and I'll demonstrate...

<vox="quaver">
(I'm seventy next year, you know...)
</vox>

Now *YOU* try a P&M Panther 650 single, with dodgy ignition timing...

 

One like this?

http://www.andybuysbikes.com/Archive/3715.htm

 

Very similar, but mine wasn't quite so - er - concours d'elegance as that...

Mine also had a good deal more oil about its nether regions.

 

SUCCESS - I had managed to loosen a connector while working on the messed
up indicator wiring. A quick dose of WD40 to clean it up and sparks
returned. Next task is to take it around to the MOT man.

Took it for a quick ride, goes surprisingly well for a 250.

 

they always did. it's a pretty good engine, as these things go, in a
not-too-heavy bike.

 

I reckon I could but have never owned a Panther. No problem kicking
over my '47 500 AJS, though. I wasn't saying it was easy, just that
kicking over a brit was no big deal when compared to kicking over a
big brit single!

I hope I'll still be able to kick them over when I'm 70!

Mark

 

In communiqué

You should have tried my old mates G85CS. Or my Husky 510 with left hand
kickstart. Thankfully I never succumbed to Velophilia.

AOL, but only three of my bikes have no electric start these days.
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The message <>

Velos were a cinch.

Ease it over tdc on the compression stroke, and give the kickstart a poke.

The only one I ever had prombles with was the Clumban's Venom. Sometimes
it went first time, other times I warmed it up with language.

 

Yeah, that was my experience. On stock exhaust sound OK too.

A former GF had the CBX250RS: lovely to ride, quicker than the
CB250RS, unbelievably frugal but expensive new and, by many accounts,
fragile.

 

Thinking about this, I can see a reason. I've got a 250 2T 'crosser
and that takes a pretty hefty boot to start, even though, while being
kicked over, it won't start compressing until the piston's over
halfway up the cylinder. I reckon the kickstart lever's quite short
and it's probably geard up quite high to turn the engine over faster.

 

what was the V-twin one? VT250?