How do I undo this nut?

[SpankMe]

There no way I'm getting a spanner in there. So how can I get it undone so I can remove the O2 sensor.

[pete376403]

Something like this? These are for brake pipes, it may be possible to get tube sockets with a cutaway to perform the same function

[SpankMe]

Something like this?

Do they have a type name I can search for?

[pete376403]

Flare nut wrench

[pete376403]

or maybe one of these would be better https://www.amazon.com/ABN-Oxygen-Sensor-Socket-Cutout/dp/B0748LD8L7/ref=sr_1_2_sspa?keywords=O2+Sensor+Wrench&qid=1575523291&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFGTFpWTlQ1OUNYUTgmZ W5jcnlwdGVkSWQ9QTA1MjA0MDIyS1AzVFhRUE1ZQlBWJmVuY3J 5cHRlZEFkSWQ9QTAyNzc3NzYzRUFIOTlIUEkzS1FJJndpZGdld E5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm9 0TG9nQ2xpY2s9dHJ1ZQ==

[SpankMe]

Excellent thanks. Off to repco.

https://www.repco.co.nz/en/tools-equipment/hand-tools/sockets/repco-oxygen-sensor-socket-22mm-rtt4491/p/A1218942

[FROSTY]

Is the O2 sensor goneburger anyway? or are you refitting it?

[Honest Andy]

Ha! I never knew those tools existed. I don't need one but they look so cool I'm going to buy one anyway ;)

[jellywrestler]

take the exhaust clamp off then access should be a peice of piss

[SpankMe]

Is the O2 sensor goneburger anyway? or are you refitting it?

I think it's buggered. It was off for a couple of years after O2 blanks got fitted, then it was refitted when a booster plug got installed and the engine started running rough when at constant speed. I unplugged the booster plug but it didn't help so I've ordered new O2 blanks.

[sidecar bob]

What about a tool made specifically for the job? That might work.
https://www.repco.co.nz/en/tools-equipment/hand-tools/sockets/repco-oxygen-sensor-vacuum-switch-socket-rst182/p/A1226542

[SpankMe]

Well the 22mm O2 sockets they had are too big. I tried a few flare nut wrenches, but they're too fat to fit between the fins. The only other option is a O2 socket set, but I'm not forking out for that for a one off job. Looks like the best option is to take it to the bike shop to have it done.

[SpankMe]

Just watched a vid of the finned collar being removed and it looks easy enough. Will give that a go when the O2 blanks arrive.

[SpankMe]

So now I need to unclip these electrical connectors that have tabs on three sides that need to be pushed in to remove. Any ideas as I don't have four hands?

[SpankMe]

Nevermind, I got it.

[FROSTY]

my thought was --if they are goneburger anyway-chop the wire and use a deep socket to undo the things.--ONLY if you never intend to use em again

[jellywrestler]

Nevermind, I got it.

got what, the sensor or the connector?

[SpankMe]

got what, the sensor or the connector?

The connector. All done. Bike is now running much better. Cleaned and oilled the air filters so bike is breathing better as well.

[FJRider]

my thought was --if they are goneburger anyway-chop the wire and use a deep socket to undo the things.--ONLY if you never intend to use em again

He still would need a tool to put the new one on ...

[FROSTY]

He still would need a tool to put the new one on ...
I thought he was using blanking plugs