Honda CG125 Basic maintenance/servicing

[Brick_Top]

I've just bought a Honda CG125. I've checked the service book and it was last serviced at 6000 miles, it now has 10000 miles on it.

What should I replace and how? Does anyone have a PDF haynes manual?

I've never done anything to bikes before, and this is my first bike. I'm not totally new to mechanical things though, I've done a bit of work on cars before.

Conrad

[bish777]

change the oil and oil filter, air filter, spark plug and the clearances on the valves could do with checking and adjusting.
____________________
GSXR1100J

[Brick_Top]

What about brakes?

[White Noise]

[mchaggis]

The oil filter is a small gauge mesh type, about the size and shape of a thimble, immediately beneath the sump plug. It just needs cleaning in white spirit or similar; it should not need replacement. I imagine you've been changing the oil every 1000-1500 miles anyway?

The valve clearances are set with a simple screw and locknut mechanism. They're set to 0.08mm IIRC, for which you will need feeler gauges. If you're careful, you should be able to reuse the rocker cover gasket, but if anyone has used instant gasket on it before, then you'll most probably require a new one.

Clean the air filter (a foam sock I think) in a big bucket of very hot water, dribble light oil through it and wring it out and massage it through to get a good light emulsion of oil through all the foam.

Brakes want adjustment if they're the drum type, and some light sanding of the brake shoes to remove any glaze which will cause squeaking. Don't breathe the dust!

For the hydraulic type, brake pads should be checked for wear limits, and then lightly sanded to remove any glaze and grease smeared on their backs also to reduce squeaking. Brake fluid will probably want replacing if it is darker than light honey, and otherwise will still probably want bleeding.

Sparkplug replacement is self-explanatory. Check the steering head, wheel and swingarm bearings for play or notchiness. Oiling the speedo, clutch and throttle cables might not be a bad idea either. Grease the swingarm and sidestand pivots, and clean any cut-out switches if they're still attached.

A bally good clean is always worthwhile, even if just to check for any loose fasteners.
____________________
I must not be a troll...
Mmmm, Guinness
Discovering the delights of Hammerite and a 3/4" brush.

[cagiva gezzer]

Don't wring air filters, press out any excess.
____________________
"because one stroke isnt enough and four strokes waste two"

[mchaggis]

[Spoon261]

I have created a Honda CG125 website, it has lots of information like how to service the bike.

https://hondacg125.awardspace.com/

If anyone is wondering why I am responding to 2 year old posts, try a google search of Honda CG125 servicing, spark plug or oil. They all bring up this thread!
____________________
Honda CG125 Website https://hondacg125.awardspace.com/
Honda CBF125, CBR125 & Yamaha YBR125 Website https://125ccbikeclub.awardspace.co.uk/
I have left bikechat forums, I do not read pm (Private Message)

[hmmmnz]

[Spoon261]

Some one or ones have rated my last post as off topic.
This has resulted in my post being hidden from most people as a result.

If the people responsible do it again, I will report them to the moderator as abusing the system.

I challenge anyone to claim my post if off topic, the topic was everything about servicing the Honda CG125, my post was everything to do with servicing the Honda CG125.

My hidden post is repeated below

I have created a Honda CG125 website, it has lots of information like how to service the bike.

https://hondacg125.awardspace.com/

If anyone is wondering why I am responding to 2 year old posts, try a google search of Honda CG125 servicing, spark plug or oil. They all bring up this thread!
____________________
Honda CG125 Website https://hondacg125.awardspace.com/
Honda CBF125, CBR125 & Yamaha YBR125 Website https://125ccbikeclub.awardspace.co.uk/
I have left bikechat forums, I do not read pm (Private Message)

[hmmmnz]

i would call it spam rather than off topic, but i rarely go in for that stuff threatening to go to a mod is more than likely going to earn you some more no one likes a taddle tale hehe

____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[veeeffarr]

Is this the website that advises people to screw a spark plug in 1/2 a turn with a plug spanner after putting it in finger tight?

[Spoon261]

[andrew191]

When i flick on the indicator to the right, the switch sticks and i manually have to push it back to the middle, the left one flicks straight back, does it just need a clean? if so how would i go about doing that
____________________
Andrew, Honda CG 125 1998.

[N cee thirty]

take the switch gear apart (like 3 screws) and give it a spray with wd40
____________________
'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

[neil.]

This thread started in 2005!

https://i32.tinypic.com/1yoec8.jpg

[Brick_Top]

Holy thread revival!

[WayneCG125]

I have a 1982 CG125

It runs great except;

The turn signals are like snails, when they work. I have to flip on and off manually when turning.

The break light is always on, I think it is a faulty switch, but not sure I I have a general electrical problem given the turn signal problem.

In they Haines manual they talk about a centrifugal oil filter. Is it real important to dismantle the engine to go though the procedure of cleaning that?

i may have more questions

[unitynotsocri...]

If its the last of the 6v battery ones then its normal.if 12v type(most probable) then the bulbs may be too high wattage,deterioated battery,corroded earths and lives to indicators,like water inside them,or bad frame earths.a wrong flasher box is a common fault.
The centifugal oil filter should be cleaned out after 12k approx.To do it you have to usually remove the exhaust and the right hand case,but its not worth doing until it needs a new clutch/clutch thrust bearing as you have to drop the oil and renew the case gasket.Its almost impossible to remove the casing without tearing the gasket and its even more impossible to reuse the gasket without oil spilling out.
When cleaning the centrigugal oil filter ,use a dry absorbant cloth and just wipe the metal paste out from the edges.The paste is a mixture of oil solids,aluminium powder and steel from when the bike was run in and metals from general wear and tear.
The indicator switch usually becomes manual after a few years. It makes up for not having an onboard computer and adds sophistication to the antiques roadshow/grandad riding experience.
____________________
nearly a normal tax paying tosser.......with ferrileness suzi100,cg125,cb125scb100n,cb175,cd100,cj250t,kh250,c15,125 bantam,super 6,rickman gs750,xt500,250rs,dt175,lifan125,dolomite1850,metro,Morris220ld,morrisfg,leyland princess,range rover,corsa,vw camper .now struggling with legs. MORE ORDER = MORE CHAOS

[N cee thirty]

all you have to do for cleaning the filter is take the clutch cover off

but meh,i didn't do it and my bike was fine
____________________
'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

[WayneCG125]

[kramdra]

if your in the south I can help with electrics.

Sounds like a new switch unit, and front brake switch would help - originals wont be much good..

Rear brake switch is adjustable


The filter is the main one. It would be a good idea - it can get full and then is useless. Wouldnt bother with the strainer, its too big to even stop sand - you wont find anything in it!
If you do this, the engine and surrounding frame need to be perfectly clean, so dirt cant fall in!
I think every 30,000 it should be done.