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Attention owners of small capacity 4 strokes

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Brolly Dolly



Joined: 22 Apr 2004
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PostPosted: 17:09 - 22 Apr 2006    Post subject: Attention owners of small capacity 4 strokes Reply with quote
Do you change your oil regularly?

At the same time do you also remove and clean the wire mesh strainer that small engines tend to have instead of cartridge type filters?

This is from a CB125 that shot a big-end due to oil starvation ....

https://img.photobucket.com/albums/v471/fastfitter/DSCF0063.jpg

How it should look .....

https://img.photobucket.com/albums/v471/fastfitter/DSCF0064.jpg


This is the one from the engine bought as a replacement ...

https://img.photobucket.com/albums/v471/fastfitter/DSCF0067.jpg



RTFM - It makes sense and could save you money
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veeeffarr
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Joined: 22 Jul 2004
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PostPosted: 17:53 - 22 Apr 2006    Post subject: Reply with quote
I have a thimble type filter that is always crystal clear whenever I change my oil (every 1,000-1,500 miles).
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noise
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Joined: 09 Apr 2006
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PostPosted: 20:42 - 22 Apr 2006    Post subject: Reply with quote
how often should i change the oil on my cg125-4?
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Mark_petty
Brolly Dolly



Joined: 01 Jun 2005
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PostPosted: 21:57 - 22 Apr 2006    Post subject: Reply with quote
Toby R wrote:
I have a thimble type filter that is always crystal clear whenever I change my oil (every 1,000-1,500 miles).


^ mine was the same as that on a Honda City Fly 125. Completley clear. I changed my oil every 1500 as well.
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Dom_
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Joined: 02 Aug 2004
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PostPosted: 22:10 - 22 Apr 2006    Post subject: Reply with quote
My mates cbr4 ate big end no 2 due to a blocked oil strainer.
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Finglonga
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Joined: 27 Jul 2004
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PostPosted: 22:37 - 22 Apr 2006    Post subject: Reply with quote
Not just small capacity 4 strokes, all engines should be changed on regular intervals. My bike should be every 6k but I do it every 4K. Just think as the oil as the blood of the engine. Wink
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SoND
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PostPosted: 22:40 - 22 Apr 2006    Post subject: Reply with quote
I change the oil and filter once every 1000 miles. Being beside the redline everywhere I go can't exactly be good for it.
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Phil_G
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PostPosted: 01:00 - 23 Apr 2006    Post subject: Reply with quote
there is an old engineers addage

"oil is cheaper than bearings"

Ive lived by this with my 106 car and its paid dividends as its now past 161,000 miles. Thats without any major work being carried out too (bar a clutch change)

If people change the oil because its black and needs changing, but dont clean the strainer then Im really curious why.
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TOM M
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PostPosted: 21:39 - 23 Apr 2006    Post subject: Reply with quote
Does anyone know if the zxr400 has one? and where its located??
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Brolly Dolly



Joined: 22 Apr 2004
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PostPosted: 23:39 - 23 Apr 2006    Post subject: Reply with quote
I'd guess a ZX4 would have a pukka spin-on canister filter - RTFM Wink
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Dom_
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PostPosted: 16:54 - 24 Apr 2006    Post subject: Reply with quote
Don't know about the zxr4 but the nc23 has a canister filter along with a strainer, just remove the sump plate to access it.
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Robby
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Joined: 16 May 2002
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PostPosted: 20:03 - 24 Apr 2006    Post subject: Reply with quote
Do modern engines still have a mesh screen on the oil pickup? And is it still worth getting the sump off once in a blue moon to clean it?
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tatters
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Joined: 04 Jan 2004
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PostPosted: 20:44 - 24 Apr 2006    Post subject: Reply with quote
robby wrote:
Do modern engines still have a mesh screen on the oil pickup? And is it still worth getting the sump off once in a blue moon to clean it?


Would,nt think so, theres no need for one with screw on oil filters.
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stooster
Scooby Slapper



Joined: 13 Mar 2006
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PostPosted: 21:14 - 24 Apr 2006    Post subject: Reply with quote
oil changes are the single most important maintenance job you can do on your bike.

it takes 30 mins and about 15 quid......................................i change mine every 3 months regardless of mileage.

dont use cheap shit oil.
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Brolly Dolly



Joined: 22 Apr 2004
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PostPosted: 21:20 - 24 Apr 2006    Post subject: Reply with quote
robby wrote:
Do modern engines still have a mesh screen on the oil pickup? And is it still worth getting the sump off once in a blue moon to clean it?



Yep, RF900 (generic Suzuki 4 potter)..........

https://alpha-sports.com/spst/1996%20RF900R/43.gif


I've never bothered with the strainer unless it's a strip down as the cartridge filter should trap all the crap. I think the strainer is more like an isurance to stop any washers etc. getting suckied into the oil pump and trashing it.



I know on bigger bikes an oil and filter change is easy, but on smaller ones where you have to start taking footrests off to get the clutch cover off to get at the strainer, some folk might think that just changing the oil is sufficient.

Hopefully these pics will persuade them otherwise. Wink
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Retro-Man
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Joined: 21 Aug 2004
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PostPosted: 22:44 - 24 Apr 2006    Post subject: Reply with quote
I don't know of any engine (and I've rebuilt a few) that dont have strainers on the sump oil pick up, its more to do with picking up debris rather than actual filtering, that job is left to the canister or centrifuge filter.
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noise
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Joined: 09 Apr 2006
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PostPosted: 10:38 - 25 Apr 2006    Post subject: Reply with quote
Toby R wrote:
I have a thimble type filter that is always crystal clear whenever I change my oil (every 1,000-1,500 miles).


Where's the filter on the CG?

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mchaggis
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Joined: 09 May 2004
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PostPosted: 13:08 - 25 Apr 2006    Post subject: Reply with quote
noise wrote:
Where's the filter on the CG?

Cheers
Gav


On the left hand side of the engine by the footpeg, below the generator, by the plate with the engine number on. It'll look something like a hexagonal 22mm head bolt.

My little chinese 125 incorporated the mesh filter with the drain bolt, so there wasn't really any way you could avoid cleaning it at the same time. Still, considering how dirty the oil got, there was hardly ever any residue in the filter - perhaps that wasn't really a good sign? Smile
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noise
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PostPosted: 13:24 - 25 Apr 2006    Post subject: Reply with quote
I see the bolt. cheers Smile i'll get on with doing an oil change then Very Happy
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Nath
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Joined: 28 Jul 2004
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PostPosted: 23:01 - 25 Apr 2006    Post subject: Reply with quote
I'd agree that there's probably not much point in checking the strainer on a bike with a filter. I dropped the sump off my 550 at the last oil change, and despite the fact that the sump was full of nasty sludgy gritty cack, the strainer was perfectly clean. I think the reason why the sump had collected so much muck was because the bike had been left standing for 10 years. Probably a good idea on an old bike with an unknown history though.
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tatters
Exxon Valdez



Joined: 04 Jan 2004
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PostPosted: 23:27 - 25 Apr 2006    Post subject: Reply with quote
Nath wrote:
I think the reason why the sump had collected so much muck was because the bike had been left standing for 10 years. Probably a good idea on an old bike with an unknown history though.



Found a starter chain and small sproket in the sump of my 1981 Z200 under the muck. Laughing
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veeeffarr
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Joined: 22 Jul 2004
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PostPosted: 02:18 - 26 Apr 2006    Post subject: Reply with quote
noise wrote:
I see the bolt. cheers Smile i'll get on with doing an oil change then Very Happy


Give the spring a wipe clean as well,

The bolt will come off (Its a cap) along with a spring, the filter is a mesh thimble.

Reassembly order is cap, spring, filter (open end pointing TOWARDS engine, rounded bit pushed inside the spring)

Don't tighten too much as you'll crack the case, then you're fucked, finger tight, then QUARTER TURN, check with fingers.

Check condition of rubbers too.

CG125 takes about 800ML of oil.

Leave for 5 minutes after filling, then check with dipstick.

Make sure engine is warm when changing oil, but avoid scalding hands (marigolds might provide a couple of seconds of protection)

Rock bike to get oil out, I found a few kicks of the kickstart never hurt.

Top up with fresh oil, give a few more kicks with ignition OFF to distribute oil some more.

Make sure to take the dipstick OUT before changing, as this stops oil getting locked in with air pressure.
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noise
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Joined: 09 Apr 2006
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PostPosted: 05:16 - 26 Apr 2006    Post subject: Reply with quote
Cheers Toby R Smile
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veeeffarr
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Joined: 22 Jul 2004
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PostPosted: 14:39 - 26 Apr 2006    Post subject: Reply with quote
noise wrote:
Cheers Toby R Smile


By the way, if you want to spend money, use either Castrol GP or Castrol GPS. (10w-40 4t)

I use the litre bottles as it removes the hassle of measuring it.

By the way, just to clarify, I kick the kickstart with the ignition off to splash some oil around the internals before starting, and i do it before i refill with oil to get the last dregs out.

And I mean to take the dipstick out while you are waiting for the oil to drain.
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noise
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PostPosted: 20:15 - 26 Apr 2006    Post subject: Reply with quote
I don't have a kickstart though Sad
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