YBR125 Spark Plug Query.

[FRS900]

Evening all,

First time poster. Super long time lurker - go easy on me please!

I’ve been getting to grips with a YBR125 (2015) which has gleefully entered my possession! Had a little trip to Halfords before Xmas to resolve an issue with my headlights and it ended up being a long chat about bikes - as a newbie I’m not one to pass up a natter!

He had a brief look over the bike for me and it appeared that the spark plug needs replacing (amongst a few other things despite being “just serviced” before sale but anyway... )

I’m finally getting round to getting the part and had a question about the right spark plug to use.

Bloke at Halfords and most other sources recommend the CR6HSA. Local shops only have CR7HSA/HIX.

This said, I’ve seen a few people say they’ve used CR7’s ~ some with no hassle whatsoever; the odd one with a grumble or two.

I just wanted to know whether CR7’s would be just as fine as well as whether the iridium spark plugs are actually worth the extra money? (Only 5 quid extra either way)

Cheers in advance!

[Nobby the Bastard]

Iridium plugs last longer but have a weaker spark.

I would stick with the recommended plug. The difference between a 7 and a 6 (or any other plug number for that matter) is the size of the bowl around the electrode and is the 'hotness' of the plug.

if you start messing about with the plug number you could end up with a bike thats either hard to start or alternately pinging, depending on which way you go on the numbers.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[WD Forte]

Got a manual here
The recommend plug is a NGK CR6HSA
easily found on Ebay
Gap 0.6mm - 0.7mm
Service Interval 7500 miles

Oh and BTW
you should really post this kind of stuff on the Workshop section
not the weepy 'my boi fwend dont love me no more' section
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bikers smell of wee

[Ayrton]

Stick with the standard NGK plug and dont bother with iridium. Check the gap with a feeler gauge too.

[NJD]

Stick with what the manual says, and I'd say normal in your case.

Use of one these circular type tools to gap the spark plug. As per the manual, or above (WD Forte post).

Get one of these tools in the correct size to install if you can. As a newbie it would be too easy to use a ratchet and socket / spark plug socket and overtighten.

Thread new spark plug in by hand and once you can't turn it anymore by hand give it the smallest of turns with the t-bar. Better to under-tighten than over. Being careful on the install to ensure the spark plug is dead straight cannot be over stressed.

The spark plug boot should pull straight off, don't wiggle (preferably).

May be beneficial to replace spark plug cap for an NGK one as well to prevent cold / wet weather problems if there isn't an NGK branded one on their already, but that's for another time.

A bike shop should be able to replace both in under five minutes and if their decent wouldn't charge you any more than the cost of parts.

HTH.
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The do it all, T̶h̶e̶ ̶b̶r̶o̶k̶e̶n̶ ̶o̶n̶e̶,̶ ̶T̶h̶e̶ ̶b̶i̶g̶ ̶l̶u̶m̶p̶,̶ ̶C̶h̶o̶n̶g̶ ̶N̶o̶o̶d̶l̶e̶

[Evil Hans]