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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Spark Plug Removal Without Removing the Petrol Tank
Post Info TOPIC: Spark Plug Removal Without Removing the Petrol Tank
Mickyb


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Which Spark Plug Spanner and Removal Without Removing the Petrol Tank
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Can anyone tell me what size and type of spark plug spanner to use to remove the plug, my plug spanner will not fit.

I didn't realise how difficult it is to get to it,any advice would be appreciated.frustrated.gif



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dan-reeves


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RE: Spark Plug Spanner
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Hello
I just asked this question, the advice was to take the fuel tank off so it is very easy to get to, i might try to just lift the front of it up first to save taking it right off!
Also you can clean in between the cams at the same time.
I am yet to do this on mine, will give it a go on the weekend :)
Dan

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Dave


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Definitely take the tank off - only a five minute job, but it's still a little awkward to get into the plug as the frame is in the way!

Also, blow the grit out of the recess with an airline/bike pump etc before removing the plug.

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Cubber


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It's a 16mm plug spanner you want.

A deep box 16mm would do, but I remove the tank and use one of these.

images?q=tbn:ANd9GcQFH0VrfDh3WnhDNAQTs6w3aFJLJMN_Eo1uMjgpVW13_CB_4-F60pZKG50c

Martyn



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East Budleigh. Devon
Mickyb


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Thanks for the advice. Bike hasn't been started for approx 4 weeks and will not start. I believe petrol is getting to the plug and flooding (strong smell), would it  be best to replace the spark plug or could it be something else? 



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dfaz


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I have managed to change the plug twice in situ without any problems,I used a ratchet with plug socket incidentally its a 10mm plug socket.

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Vernon Thornton


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Spark Plug Removal Without Removing the Petrol Tank
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Fellow TTR riders - This may be of assistance to you ...

It is possible to remove and refit the spark plug without having to remove the petrol tank.

Firstly, as mentioned by somebody else in the forum I used a smaller soft pipe gaffer taped onto my vacuum cleaner hose to suck out the dried mud and stones present around the spark plug, along with scraping it out with a small screwdriver. 

This was something that I did almost continuously as I removed / refitted the plug.

Use a 16mm " long " socket that has a 3/8th’s drive and a ratchet. The socket must be slightly longer than the spark plug so that it can act as a traditional spark plug spanner. 

When the area is clean, put the socket over the spark plug ensuring that it sits in place over the spark plug shoulders.

The three eighths ratchet is then small enough to fit into the top of the recess and gives sufficient clearance to connect to the socket and undo / refit the spark plug. 

You may already be aware that a half inch drive ratchet is too big to fit in. 

I used a child’s bicycle mirror from the 99p shop as an inspection mirror, along with a torch. It gives a great view directly above the plug so you can make sure that it is clear on all sides before removing the plug.

NB !!  It is essential to ensure that the area around the plug is clean otherwise any nearby debris will almost certainly drop into the engine through the spark plug hole.

Cheers and enjoy your riding !



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Cubber


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Welcome, Vernon and thanks for the posting.

I had similar thing with my TTR and posted my answer to the clogging sparkplug problem.
I removed my tank to gain access though.

CLICKY THINGY here to see my post.

Resulting in this modification

Img_9283.jpg

Martyn

 



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East Budleigh. Devon
Cubber


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Thanks, Jarrah.

Of course it restricts the flow of air through the vent holes - but not as much as the plug of mud that was there before! wink

Martyn



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East Budleigh. Devon
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Cubber wrote:

 

Thanks, Jarrah.

Of course it restricts the flow of air through the vent holes - but not as much as the plug of mud that was there before! wink

Martyn

 Lol you beat me to it Martyn- I was going to add more. Oh well, it may be good to play spot the difference between my posts above biggrinbiggrinbiggrinbiggrin

Lol Martyn, I take it you ''forgot'' about those holes?? smile

Jarrah wink



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TT-R250M


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Hello Vernon Thornton  and welcome to the forum.

I use a special spark plug tool to remove the plug and an air compressor to blow out the gunk. Removing the tank is not hard though.

Just a heads up- water and dirt can still enter the spark plug hole via the ventilation hole that runs from the front of the head through to the spark plug hole, then out the rear of the head. These are for better heat dissapation and air flow across the cylinder head. There is two of these ''vent holes'', one right side, the other happens to run through the spark plug hole as mentioned above.

Nice mod Martyn, but does it restrict the air flow to the mentioned air vent holes?? confuse.

To make it easier I have made the part I edited bold.

Jarrah



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texasT


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Vernon,
Welcome sir. Glad to have you here.smile

Thanks for sharing this tip.

Getting the plug OUT is not at hard as getting it back in.
I hear what you are saying, just be careful not to strip the threads on the way back IN.
Getting the tank off ain't as hard as replacing a stripped head. I have no doubt you are skilled enough to do this trick, but anyone that tries this needs to be careful.

 I have big & stiff old hands and not enough luck to pull this off.no

greg



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Vernon Thornton


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Hi All - Good point Greg. I was also not aware of the vent holes that Jarrah mentions above - Another good point !

Martyn - Does your innertube seal prevent the mud from gathering around the plug or can it still get fired in via the front of the cylinder ?

Looking forward to our Cambrian Mountains trip tomorrow, Saturday 11th May 2013, with 4 mates at Trail Ride Wales. My mates are hiring TRW bikes as a taster and I am taking my TTR. Two mates will be carrying mini cameras so there should be plenty of footage to create an amusing video that I will post on our forum when I have had the chance to do it.

Just for fun here is my first video attempt when we did a wheelie school a few years ago. I'm the one with the sandwich and the first still wheelie picture at the end of the video ... http://www.youtube.com/watch?v=Ze_5QKVC9Fk 

Cheers,

Vernon Thornton.



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Cubber


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Vernon asked

Martyn - Does your innertube seal prevent the mud from gathering around the plug or can it still get fired in via the front of the cylinder ?

 

Vernon, the strip of rubber fits snugly over the plug cap and is sized large enough to curl up the sides of the opening between the cam cover, sides, front and back.

Any mud, grit, stones and water that would have entered the plug recess from above is therefore shed away from entering. aww

The small drain holes front and rear were poked clean and are still clean. smile

I can vouch for the workings of my method after having used it since February 2012 and the chasm is still clean. thumbsup.gif

 

I presume this is you, "the sandwich man"?

Image2.jpg

Martyn



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East Budleigh. Devon
Vernon Thornton


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Martyn - Thanks for the info. I will give it a go when I get a minute and yes, that's me on the way to the wheelie school



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TT-R250M


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RE: Spark Plug Spanner
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This is like what I use an removing the fuel tank is not needed...

Enjoy!

Jarrah



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TT-R250M


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I am unsure if the above spanner will  work (it should) but here is a picture of mine. Taking the fuel tank off is not needed.

FILE0762.JPG

Enjoy!

Jarrah



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