Oil for Yamaha YBR 125

[JAMES2503]

Hi, I was wondering if this oil would be good for this bike, it says in the manual 10w/40 is best, but doesn't state whether it uses fully synthetic or semi. If not can anyone give me advice on the best oil to use. Thanks https://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_263977_langId_-1_categoryId_165507

[N cee thirty]

should be fine
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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

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[Livefast123]

Any Supermarket 10w40 semi synthetic will be fine for the YBR, just change it every 1-2000 miles and you'll be fine.

No need to spend nearly 12 quid a litre on fully synthetic with unobtainium wear reducers
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Current ride - Yamaha MT-07

[JAMES2503]

Right, thanks for that, just wanted to know for when I need to change it. This is off topic, I know, but there's a problem with my bike I think. It takes way too long to warm up on choke, I mean I'm talking more than 10 minutes here. Also when I pull away in first, it pulls smoothly then sounds like its going to cut out....but doesn't. Any ideas?

[neil.]

Post a pic of your spark plug? As for oil, I use Halford's 10w40 semi for many miles and it was fine.

[JAMES2503]

Want me to remove the spark plug then post a pic? and yeah I've decided just to use halfords semi

[neil.]

Yes please remove it, that way we can work out if it's worn, or if the engine might be running rich or lean and then point out possible causes, or if it's not related at all.

[MarJay]

Dont use fully synthetic, its a waste and it might get past some oil seals and stuff.

Use a reasonable quality semi synth, but even a cheapo mineral oil will be OK in that bike.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[P.]

[JAMES2503]

Here's those pics of my spark plug. Also I have tried riding off with the choke on for a very short while, then leaning over and turning it off, what an old biker said to me see

[neil.]

Could also be that your idle speed might be set a bit too low. Once warmed up, should be hitting just before the 1500 mark. The idle screw is on the right side of the carb, facing out, it's the biggest screw there.

Edit: Can't see pics.

[JAMES2503]

Pic's didn't post. So trying a different way. https://i52.tinypic.com/1zqy2l5.jpg
https://i53.tinypic.com/v3lw76.jpg

[neil.]

Plug looks spot on to me, I'd be checking the idle speed once warmed up and adjusting it if need be.

[JAMES2503]

Yeah after all that it was just the idling speed, something so simple I never though of lol. It was idling at 1000/even 900 sometimes, so simple turn of a screw and it's never sounded healthier! thanks for your help anyways and I'll keep you posted if any more problems occur

[neil.]

Great bike to learn this stuff on, is a 2005 YBR.

Tip: get some copper grease on the spark plug threads (not the electrode/insulator part!) and this will help future removal as well as give a better earth connection.

[P.]

Plug looks... a bit plain to be honest... id richen that up slightly.

[temeluchus]

[P.]

[sandhu40]

Quite silly, I admit, but I have done 9,000 miles without changing the oil once.

Going to change it tomorrow as the gears are a little difficult to change.

Can anyone recommend what else could do with a change? It's a 10 plate YBR and has 10,000 on the clock. Nothing has ever been changed so it deserves some love.

Thanks everyone, for initially recommending the bike a year ago and for the help now.

AJ

[temeluchus]

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[temeluchus]