Choke;

[Guest]

Well, i'm getting my first bike tomorrow! Yay!

Its a Yamaha SR125 out of interest (M reg, 1995).

Shud have no problem tomorrow cos i'm gonna be out on the thing all night i think! (well, up until around 11pm when the drunk drivers start to roam...)

But when i come to start it up monday morning, i have no idea how a choke works!

They say "use full choke", so i assume that means turn it all the way on. Then what?

Start up the bike... Do i manually turn the choke off once the bike starts?

Sorry for the nooby question. A simple step-by-step guide would be great!

Thanks all

[Guest]

Takes a little practice ... but

Turn choke to full on if cold (less so in warm weather) and press starter. You may or may not require a little bit of throttle.

Practice will show what is required.

With choke on, let it warm up a bit, and gradually turn the choke off. (could be over 5 mmins or so) if you turn it off too soon the engine may stall or sound like it is struggling ... If you try riding with too much choke, you can flood the engine and stall ...

Practice makes perfect.. but I hope that helps..

Frankie will put it better I bet

[asharin]

Chances are you'll find the choke is broken anyway, as it's a pretty common fault on Yamaha SR125's. Basically it doesn't stay out and you have to hold it out or it retracts. Not a big problem, I just used to hold it out til the engine was warmed up. If it needed it on for a little longer, well a little blue-tack works wonders

[Guest]

1. find your choke lever.. mines a lever at the side of the switch gear, some its a pull out button..(some have to turn to lock open)

2. operate to max (push all the way on, or pull out..

3. start bike..

4. revs will climb as its on choke, operate the lever slightly to bring the revs down slowly to a fast tickover, if it stalls put a bit more on and start again.

5. put on lid and gloves, this gives the bike chance to warm..

6. ride away, but be aware the bike is on choke, the revs are higher, so the bike will be moving quicker than on normal.. your engine braking will be reduced dramtically, and you will be pulled round obstacles rather than riding round them, feathering the brakes may help..

7. operate the lever more to off, or full off, this will return you to normal running, and a better idle speed..

to give you a for instance, mine comes off choke after 5 mins, or 300 yards,

also if setting off in the early morning, just get on, and start the bike with the choke and turn it off when applicable, otherwise your neighbours will love the early morning call....

[Colin the Bear]

The choke is just that. It chokes the air off from the fuel/air mixing system. This makes the mixture rich. While this is a good thing for starting a winter cold engine, it's a bad thing for a warm engine, and will make it run rough.

The first quarter to a third of the choke lever movement merely opens the throttle for you, like twisting the grip. The rest of the movement slowly closes the air inlet.

The starting procedure is a bit of guess work as to how much choke to use. Don't be tempted to twist the throttle back and forth as each time puts an extra squirt of fuel into the cylinder. At low temperatures petrol evaporates more slowly and too much will condense on the internal surfaces of the combustion chamber. If it wets the plug ,the plug can't spark and you're flooded.

When the engine starts , listen to it. Adjust the lever to give the best result.

As a person of limited experience , I would recommend that you don't set off on your journey until the engine is running smoothly and responding to the throttle.

This shouldn't take more than a couple or three minutes and will save you a deal of trouble on the road.

[Guest]

Yeah i think its best you dont set off until the choke is off... makes life easier!

this is what i do

Full choke on

turn bike around...half choke

take bike out of back garden,

turn choke off totaly, or leave on half if really cold.

at this point i usualy go back in the house and turn engine off but other wise get gear on and ready to set off

choke off, and go..(if still on obviously)

if its really cold you may need to leave it on longer, or similar for warmer weather don't keep on so long..

[Guest]

Excellent Had no problem getting used to it and started it up fine. I actually wet out and came home about four times today, and found i only needed to use the choke in the morning. The rest of the time (even after a few hours) still didnt need the choke, so i was happy

My friend's bike however was ridiculously hard to start! Even with full choke! I had to keep revvin it to keep it from dying. Even then it would still die. Had to take it out for a quick blast to get the engine warm (kept it revved to some extent at traffic lights).

[Guest]

Engines will stay warm for hours, also its usually warmer in the afternoon!

Any maybe your mate needs to turn idle speed up a bit, doesnt sound right though

EDIT: I usually only use choke when i first turn the bike on, rest of the day i dont. But i do find it struggles to start with the choke (need to keep the starter motor going for a good few seconds. )

[Guest]

How would i/him go about doing that? Its an '09 Megelli 125 S. After i ragged it about a bit, it idled fine.

[Guest]

Chances are you'll find the choke is broken anyway, as it's a pretty common fault on Yamaha SR125's. Basically it doesn't stay out and you have to hold it out or it retracts. Not a big problem, I just used to hold it out til the engine was warmed up. If it needed it on for a little longer, well a little blue-tack works wonders

 

Aha!! This is the case!! Thats exactly what it does

Thats hilarious.

[Guest]

How would i/him go about doing that? Its an '09 Megelli 125 S. After i ragged it about a bit, it idled fine.

 

It should be in the manual

Also i wouldnt rag a cold engine...

[Edgey]

Yeah I was a bit worried back there lol.

Now it was running fine earlier tonight, I will try start it in the morning and see how it goes. Previous to this evening, it had not been turned on in a couple of weeks as it had been sat in my house and mother doesn't like the smell of petrol, just popping that fact into the discussion.

Now it's outside after purchasing some security and a cover so I can go start her up.