Author Topic: Odometer knob removal  (Read 1012 times)

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Offline Gr8uncleal

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Odometer knob removal
« on: April 13, 2021, 03:17:58 PM »
How does one remove the odometer (trip meter) knob on the Yamaha speedos from late 60s to mid seventies - eg AT, CT, DT,RT, round tank RD125 etc etc? If it is small screw through the centre, is it straightforward to drill this out if the JIS head has corroded?

I have a nice, usable knob on a jiggered (and I mean truly jiggered!  :o :D) speedo that I would like to remove and use on my DT3.

I'll post a photo later.

Thanks.

Edit - Photo now attached.
« Last Edit: April 13, 2021, 04:09:15 PM by Gr8uncleal »
Yam RD200DX (Gr8auntiepat's)
Yam FZX700 Fazer
Yam RD400C slowly getting back to standard
Yam RD350B rough
Yam RT2 almost finished
Yam DT360A almost finished
Suzi GT550J just started
Suzi 1250 Bandit regular rider
Yam RD125(A?) in the kitchen being reassembled
Yam RD250E just started
Yam DT3 just in

Offline GAZZATT2

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Re: Odometer knob removal
« Reply #1 on: April 13, 2021, 06:38:12 PM »
on the later bikes, I only have tried on coffin tank RD the knob unscrews left hand thread you have to hold the odo shaft with thin long nose pliers
XSR900  350lc 400F 400f special 2nd 400F special
it did look good in a photo lance ?
Picture026" border="0

Offline Gr8uncleal

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Re: Odometer knob removal
« Reply #2 on: April 13, 2021, 06:57:15 PM »
Thanks Gaz.

I can't 'feel' any purchase on the screw head, using a watchmaker's screwdriver.
Yam RD200DX (Gr8auntiepat's)
Yam FZX700 Fazer
Yam RD400C slowly getting back to standard
Yam RD350B rough
Yam RT2 almost finished
Yam DT360A almost finished
Suzi GT550J just started
Suzi 1250 Bandit regular rider
Yam RD125(A?) in the kitchen being reassembled
Yam RD250E just started
Yam DT3 just in

Offline tony2stroke

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Re: Odometer knob removal
« Reply #3 on: April 13, 2021, 08:44:49 PM »
All the Yamaha clocks I can remember have unscrewed in reverse thread, it used to annoy me as they came loose many times, and when trying to reset trip meter, I kept turning wrong way.

Though my memory is not so good anymore.

Offline Barnett

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Re: Odometer knob removal
« Reply #4 on: April 13, 2021, 09:45:06 PM »
Yes, reverse, and had exactly the same problem, has to drill it out and make up new knob on lathe.

Offline Gr8uncleal

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Re: Odometer knob removal
« Reply #5 on: April 15, 2021, 10:55:26 AM »
This is the one on my DT3 that I want to replace. Conveniently  :o :D, it has snapped off just by the screw, so here is a photo of what's inside the knob.
Yam RD200DX (Gr8auntiepat's)
Yam FZX700 Fazer
Yam RD400C slowly getting back to standard
Yam RD350B rough
Yam RT2 almost finished
Yam DT360A almost finished
Suzi GT550J just started
Suzi 1250 Bandit regular rider
Yam RD125(A?) in the kitchen being reassembled
Yam RD250E just started
Yam DT3 just in

Offline Gr8uncleal

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Re: Odometer knob removal
« Reply #6 on: April 27, 2021, 06:56:54 PM »
I managed to successfully remove both screws today with the pillar drill.

On the one with the good knob, I used a 2.5mm bit to remove the head of the screw. On the one with the broken knob, as seen in my earlier photo, I used a larger bit to drill into and destroy the remains of the knob.

Both screws came out remarkably easily once I could get the mole grips on them and they are normal, right hand thread.
Yam RD200DX (Gr8auntiepat's)
Yam FZX700 Fazer
Yam RD400C slowly getting back to standard
Yam RD350B rough
Yam RT2 almost finished
Yam DT360A almost finished
Suzi GT550J just started
Suzi 1250 Bandit regular rider
Yam RD125(A?) in the kitchen being reassembled
Yam RD250E just started
Yam DT3 just in

Offline Barnett

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Re: Odometer knob removal
« Reply #7 on: April 28, 2021, 07:15:35 PM »
I managed to successfully remove both screws today with the pillar drill.

On the one with the good knob, I used a 2.5mm bit to remove the head of the screw. On the one with the broken knob, as seen in my earlier photo, I used a larger bit to drill into and destroy the remains of the knob.

Both screws came out remarkably easily once I could get the mole grips on them and they are normal, right hand thread.

result! but odd, mine was left hand.  :-\

Offline Gr8uncleal

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Re: Odometer knob removal
« Reply #8 on: April 28, 2021, 07:30:09 PM »
I managed to successfully remove both screws today with the pillar drill.

On the one with the good knob, I used a 2.5mm bit to remove the head of the screw. On the one with the broken knob, as seen in my earlier photo, I used a larger bit to drill into and destroy the remains of the knob.

Both screws came out remarkably easily once I could get the mole grips on them and they are normal, right hand thread.

result! but odd, mine was left hand.  :-\

Indeed!  :-\

The US folks on the Enduros forum said that it was right hand, so I was caught between two stools!  :o :-\

What is the retaining screw, M2 x 8mm?
Yam RD200DX (Gr8auntiepat's)
Yam FZX700 Fazer
Yam RD400C slowly getting back to standard
Yam RD350B rough
Yam RT2 almost finished
Yam DT360A almost finished
Suzi GT550J just started
Suzi 1250 Bandit regular rider
Yam RD125(A?) in the kitchen being reassembled
Yam RD250E just started
Yam DT3 just in

Offline Barnett

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Re: Odometer knob removal
« Reply #9 on: April 29, 2021, 09:55:57 AM »
I think it was M2.5, 8mm long yes, jis crosshead dome. Can't find my notes!

Offline Gr8uncleal

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Re: Odometer knob removal
« Reply #10 on: May 05, 2021, 01:53:36 PM »
I think it was M2.5, 8mm long yes, jis crosshead dome. Can't find my notes!

Update.

Screws arrived today - M2 x 8mm, right hand thread, Allen headed (1.5mm key), with screw head diameter of 3.8mm.

Fitted like a glove, with plenty of turns of the screw before tight.
Yam RD200DX (Gr8auntiepat's)
Yam FZX700 Fazer
Yam RD400C slowly getting back to standard
Yam RD350B rough
Yam RT2 almost finished
Yam DT360A almost finished
Suzi GT550J just started
Suzi 1250 Bandit regular rider
Yam RD125(A?) in the kitchen being reassembled
Yam RD250E just started
Yam DT3 just in

Offline Barnett

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Re: Odometer knob removal
« Reply #11 on: May 12, 2021, 08:01:33 PM »
Excellent! Socket cap screws, a wise choice.

Offline Gr8uncleal

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Re: Odometer knob removal
« Reply #12 on: May 12, 2021, 08:23:27 PM »
Socket cap screws.......

I've got some spare if anyone's interested - free, but I would need postage covering.
Yam RD200DX (Gr8auntiepat's)
Yam FZX700 Fazer
Yam RD400C slowly getting back to standard
Yam RD350B rough
Yam RT2 almost finished
Yam DT360A almost finished
Suzi GT550J just started
Suzi 1250 Bandit regular rider
Yam RD125(A?) in the kitchen being reassembled
Yam RD250E just started
Yam DT3 just in