Help needed with Honda CG125

fanta · Derestricted Danger Joined: 21 Sep 2004 Karma :

Hi guys, i've just joined the forum after recently aquiring my first CG125 ! Hello All

I gave my GC125 with 2001 plate a good service today, and adjusted the valve clearances to what the handbook says it should be 0.08mm. i used a feeler gauge. I had to do the adjustment because the rockers were getting really noisy. Now i've done it the thing wont turn over for longer than 5 seconds, its a kick start and as it stands the battery is flat.
When it turns over for a few seconds the neutral light comes on. so i know the fuse is ok. Fuel ok too. Could it be the spark plug? i don't have a socket to remove it yet, any help appreciated

fanta · Derestricted Danger Joined: 21 Sep 2004 Karma :

i checked the spark plug, looks ok and gap fine also

mr jamez · World Chat Champion Joined: 04 Aug 2003 Karma :

Did it work fine before you did the clearances? it is possible that you have done them too tight.

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

So it runs for about five seconds then cuts out? Wierd. Does it have petrol in it??
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map · Mr Calendar Joined: 14 Jun 2004 Karma :

My old CG was very funny at starting - needed choke on 1st setting every time. Don't know if that'll be the same with a newer (improved!) model.

I thought the newer ones had electric ignition Confused

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fanta · Derestricted Danger Joined: 21 Sep 2004 Karma :

I checked the fuel - the stuff is visible with tank open
I checked the spark plug - OK with 0.8mm gap
Battery is flat - not too worried about that as bike is kickstart

Valve clearances set to 0.08mm using blade with slight resistance as manual says.

Bike will still not tick over, i've given up for tonight.

The bike had been covered in garden for 1 week whilst i was on holiday.

swampy · World Chat Champion Joined: 04 Aug 2004 Karma :

Could it be water in the fuel ? especially if been outside this week... the weathers been pretty atrocious (down here at least !), or crap in the carb ?
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Retro-Man · Traffic Copper Joined: 21 Aug 2004 Karma :

I to have a CG125 1999 model
I do have to use first position of choke for first minute of running before it will tick over,
have also removed and cleaned carb this helps a lot..

hope this helps Thumbs Up

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fanta · Derestricted Danger Joined: 21 Sep 2004 Karma :

Thanks for the replies chaps

Retro - have you ever adjusted your rockers ? do you have the haynes service manual ? i'm just interested to know what the procedure is as the honda manual is very vague!

Cheers

Frost · World Chat Champion Joined: 26 May 2004 Karma :

First off charge the battery then:

Clean the plugs (bit of rag actually betwean the two points)
Give it a few kicks without the plug in
Turn the fuel onto reserve
tap the carb a few times with a hammer
put the plug back in
turn the choke on full
kick it up

It should fire up after that. A flat battery will likely cause it to fire up from the kickstart, but then quickly die as the battery has insufficient power to keep the spark going

fanta · Derestricted Danger Joined: 21 Sep 2004 Karma :

That sounds like a dam good idea there m8!

I will try it when i get back tonight, providing it aint raining, i'll have to do some reasearch on the battery and knock up a charger for it

Hex · Party Boy Joined: 04 Feb 2002 Karma :

Also just make sure the lights are turned off while trying to start if the battery's dead,
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fanta · Derestricted Danger Joined: 21 Sep 2004 Karma :

hi chaps all sorted now, i took the battery out, charged it for 15mins using a stabilsed 12v power supply@ 600mA, put it back in bike turned the key and i see the green neutral light...

changed the spark plug for good measure...

it took a few kicks but i got it goin.. just filled up with new fuel, and its now running better than ever !

Thanks

mr.z · World Chat Champion Joined: 04 Feb 2004 Karma :

Tappets on the cg are pritty loud so you will know when they need doing again! it could also mean your oil is getting low (suppriseing how much difference from min to max)

I remember being quite disshartened when i first got mine and could only start it every other attempt (it was sitting at my sister house for a few weeks, every couple of days i'd think of an excuse to go and furiously rub my legs in anticipation of life on two wheels..) the choke had to be just right...

One warning about the neutralk light, just because its on dosen't mean your not in gear! just be carefull of it Wink

Welcome to the forum and have fun with the cg, its a fantastic little bike, i really do wish i still had mine...
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