Honda XR 125

[Aivaras55]

Hello, I need some advice about my Honda, because it won't start.

Here is the story:
I bought bike for 900 (2006y.), but I had problems starting it, coz it was cold, however a guy showed me a choked, it helped. I tried it myself but I left it on for too long and he said battery could die if I do that. :/ However This helped to start a bike. So I went on a 20miles trip home, but on a junction it stalled and I wasn't able to turn it on, so I used a choked(turning on and then off after start), started fine on another junction it stalled again and I tried using choke, but it didn't work So yeah I tried few more times and after trying bike was totally dead without any sound when turning ignition. When I press ignition all lights become less visible. Also if I left lights for a minute they become less and less visible, but I tried waiting for an hour and still no sound after hitting ignition, lights glows just fine unless I touch ignition.

I found MOT service on the way and one helpful men tried connecting some voltage or smth(I'm not good at it) sound of engine appeared, but only a sound if he release throttle it turns off.

Is this because I have drained a battery? Seller said that he have changed battery month ago and he had a prove.. Also is it normal for lights to become less visible when turning on ignition?
That's annoying I fear that I made mistake buying this bike :/

I would be really thankful to get some advice..

[N cee thirty]

your batterys flat and i'm guessing the idle jet in the carbs blocked
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[Aivaras55]

[N cee thirty]

just take the carb apart,20 min job really

take the carb apart,all you have to do is unscrew the throttle at the top,unscrew the cable at the side for the excellerator pump

then undo the 2 nuts that connect it to the rubber manifold,then pull the carb out,undo the float chamber (3 scews) and you'll see the jets.

get a flat head to the jets and unscrew them and blow through them,then get a 10mm ? spanner and undo the bits the the jets go in to,blow through all these and clean them up

then do the stuff in reverse order and your bike shall work...hopefully

https://www.bikechatforums.com/viewtopic.php?p=2770082&highlight=#2770082 same engine as a cg
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[chris-red]

Leave the carb for now it sounds like your new at this and have no idea what you are doing (no offence intended).

First don't take the bike to a shop or take anything a part.

Second, buy a battery charger, try to get one specifically for motorcycles they shouldn't be too dear.

Charge the battery preferably overnight, then try to start it.

Tips for starting it.

Make sure the petrol is on.
Put the choke on.
Leave the throttle alone.
Thumb the starter do not continuously hold it down no more than 5 second bursts.
If it struggles feather the throttle every slow slightly.
Once the bike has started let it run for a little while then turn the choke off, the choke should only be used when the bike is cold.

I think you were not shown these things and have been trying to start it incorrectly and has such have drained the battery. DId you leave the choke on whilst riding it?
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Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[Aivaras55]

Yeah I was planning to charge it and see how it goes.

I was looking for a charger and I came by this https://cgi.ebay.co.uk/12V-ATV-CAR-QUAD-VAN-MOTORCYCLE-BATTERY-TRICKLE-CHARGER-/120659196906?pt=UK_Motorcycle_Parts&hash=item1c17d93bea#ht_888wt_905
Is this any good, or I should stay away from it? Because others are quite expensive, I may try to bump start it or ask my instructor to charge a battery

Anyway, thanks for the tips! Sadly I wasn't given any proper instructions..

[nsr_J22_FOXEYE]

that will work fine... but why not bump start it and charge from your bike till you can charge it fully?
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Never Ride Faster Than Your Angel Can Fly

[Aivaras55]

Yeah I tried that today it worked. However not long. I rode like 500meters then came to the red light. so had to stop. When I stopped rear lights in 3 seconds from bright went almost off and engine stalled after that.
So yeah I tried again I stopped on neutral and maintained throttle a little bit N green light was flashing great, but when I released throttle it became less visible and engine stalled. So yeah I kept engine a life for like 2 minutes, but when I release throttle totally on neutral it dies again..

Actually that's why my battery died when I was going home, coz bike kept stalling every junction when I had to stop... Any thoughts? My friend says it has something to do with petrol feed?

[Aivaras55]

So yeah moto works fine when you increase rev's a little bit, but it stalls without rev's even when engine is hot.

Maybe it has something to do with adjusting rev bolt?

EDITED: Yep it was rev bolt. We increased revs and bike didn't stall since then! I have left for an hour to charge a little bit. Tomorrow I'm gonna leave it for another hour.
Thanks for all the help. It's great to have such a forum!

[chris-red]

Are you turning the choke off?


If you are it could be that your idle is set too low. There will be a screw on the carb to turn this up. Usually it is a screw that you can turn with your fingers it may have a spring on it.

https://www.teamcalamari.com/pix/24mm/7a.jpg


Look something like this.

what you need to do is start the bike and have it idling and turn the screw slowly one direction. If the idle goes up keep turning it so that it is set to about 2k rpm. Leave it alone and let it warm up. Once it has warmed up turn the choke off then adjust the idle to about 1200rpm-1500rpm.

Where are you based? I'm sure a helpful bcf'er could help out.
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[Aivaras55]

Yeah by saying rev bolt I meant that screw on the carb. I tried increasing it by one full turn without choke and it worked like a charm, moto no longer stalls.

Anyway, I don't have any rpm indications, but I'm guessing it's around 1000.

At the end everything works now, it still wants to stall if you increase throttle too fast so maybe I should try to increase idle a little bit more?

I'm based in west London Yeah it would be fantastic.

My flat mate knows something about cars, so if not him I would be totally srewed

[Livefast123]

1 whole turn is a large amount to have to adjust the idle screw. Was the bike sat up for long before you bought it.

If the bike stalls when you turn the apply throttle fairly quickly then there are a few culprits.

Carb jets partially blocked
Fuel filter clogged
Air filter clogged
Knackered spark plug
Air leak

Sounds to me like you have one of the above problems but you have just adjusted the idle upwards to mask the problem.

Personally I would replace the spark plug and fuel filter then clean the air filter and go from there. It will cost you pennies and at least you can eliminate that before you have to learn how to clean a carb!
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Current ride - Yamaha MT-07

[Aivaras55]

Thanks for input!
Spark plug was recently change.

I looked for fuel filter, but I couldn't find for xr 125. Or this one would do a trick? https://www.chinesemotorcyclepartsonline.co.uk/part_FFT2_CBX750.php ?

About air filter. The problem is I can't open seat :/ I tried with key, I can turn lock half way, but without any click sound..

[Livefast123]

Change the plug again, they are only cheap and even a new one can be faulty or go faulty in a short space of time.

An inline fuel filter will be fine but they are cheaper on ebay etc. There may be a mesh filter attached to the top of the fuel tap inside the tank or a mesh strainer where the fuel line goes into the carb but i'm not familier with Honda 4 strokes.

Maybe the last owner couldn't open the seat to clean the filter. Are you sure there's nothing to pull when you turn the key halfway to open the seat. On the NSR you turn the key then pull a bracket down. I'm sure an XR owner could shed some light.

If that doesn't work then you'll have to clean the carb out. Easy even with little knowledge and basic tools. There are loads of video's and guides on the internet.
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Current ride - Yamaha MT-07

[JonE]

Hi

To remove the seat on the XR you need to remove both side panels, then there is another 2 bolts securing the seat.

Cheers

Jon

[el_oso]

have you turned the key the other way as well. been a few years since i seen my xr125 but iirc turning the normal way to open a lock releases the helmet holder thing and turning the other way opens the seat.
so turn the ket both ways is what i am saying
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Duke 390
Previous: '05 XR125L | '96 XJ600S Diversion |'05 Suzuki GSXR1000 | '05 Honda CBR125-R | '97 YZF 600R Thundercat | '11 Honda CBR250
Car: Jeep Wrangler 4.0L

[Aivaras55]

[Aivaras55]

Can anyone tell me how to check oil? How much there is? I had a car before and I could check it easily, but I couldn't find any info on motorbike(only how to change).

Thanks.

[N cee thirty]

undo the dipstick

wipe it,put it back in but don't screw it in,just let it rest and see how far its up the stick

bikes gotta be central and straight up
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[Aivaras55]

Thanks. Rode with the bike today and it really feels like it's impure. If I didn't apply almost max of throttle on the start it wanted to stall.

Where is that fuel filter? In the petrol tank? :/ And air filter near carburettor? Gonna clean those two. Also I thought about using wynn's Fuel injection system cleaner after dealing with filters. Anyone tried it?

[N cee thirty]

check/wash/replace the airfilter

get a new plug

but i'm still convinced the carb needs cleaning
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[Aivaras55]

I have got a new plug, new fuel filter, still the same.

How about this?
https://classicmotorcycles.about.com/od/serviceandrepair/a/CarburetorProblems.htm

Maybe I have Lean Mixture? Or rich? I tried working with that fuel screw , but I couldn't turn it, tried with various instruments lol How can I adjust it?

[N cee thirty]

its probs seized in,is it under the carb ?


try running it without the air filter attatched and see if its any different
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[Vincent]

I think that the best thing you could do is to buy yourself a manual - a Haynes one should do the trick. You should only be using the choke to warm the bike up, if you use it too much, you could damage the engine. Same with incorrect carb adjustments.

Don't try and start the bike with the lights on. Without the engine running, the lights will soon flatten the battery. If you've stalled at night in the middle of the road, switch to side lights.

Be patient, you'll get there

[Aivaras55]