Yamaha FJ1200 Rev. counter dead

[ELIMINATOR]

Started it up this morning to hear what it sounded like with the end plates on the silencer's removed, no movement from the rev. counter.

I don't know, I spoil the bike with a new Powerbronze flip up screen and some second hand crash bars and this happens.

Any ideas at where I should be looking?

 

[flatdog]

Started it up this morning to hear what it sounded like with the end plates on the silencer's removed, no movement from the rev. counter.

I don't know, I spoil the bike with a new Powerbronze flip up screen and some second hand crash bars and this happens.

Any ideas at where I should be looking?

Did you rev it, sometimes the alternator will need a bit of a rev to start charging/ wake up the electrics.?

 

[ELIMINATOR]

YUP, REVVED IT.

 

[Dave Ett]

Did it twitch at all? Did you tap the dash? Does it twitch when you flick the kill switch on and off?

It's driven directly from the CDI which lives behind the left hand panel below the seat. Check the plugs are properly seated.

There is a plug break within the fairing, but you'll really struggle to get your hands in without at least dropping the fairing forward a little. Might be worth wriggling a mit up there if you can with the engine running - it might make a loose connection for a moment or two and at least you'll then know where the problem lies.

 

[ELIMINATOR]

Thanks Dave

 

[Dave Ett]

No worries. If that doesn't work get back to me - I have the Yam workshop manual...

 

[Rob Farmer]

Get in Touch with Wegpin (Gaz) on ebay. He has the entire dashboard for sale for £18

http://www.ebay.co.uk/sch/wegpin/m.html?_nkw=&_armrs=1&_from=&_ipg=25&_trksid=p3692

 

[ELIMINATOR]

Rob, I bought the recently fitted crash bars from him.

The bike is at the back of the garage at the moment. I pulled the L/H cover off, (seat already off, battery on charge) I pulled 3 terminal blocks apart, they are clean and good. It was at this point that I remembered that about a year ago when I bought the bike, I took every accessible terminal block apart (I had the fairing off) and sprayed them with contact cleaner and then silicon greased them.

I'll try tapping the dash and wiggling the terminals under the fairing as you suggested on Thursday (day off)

I might buy the clocks.........................hmmmm. seem to remember buying the bottom linkage assy. for my Divvy, only to find the problem was in my imagination

My Yamaha workshop manual is behind the bike, which is behind the other bikes.

There's a hole in my bucket, etc.

Put a bid in for the clocks anyway, nothing like collecting spares.

 

[Rob Farmer]

Rob, I bought the recently fitted crash bars from him.

I went down to pick up some parts from him. He's a good guy.

I'm really enjoying my 1100. very usable machines considering they're so old.

 

[ELIMINATOR]

Just goes to show that we don't have to spend a fortune to get a good bike.

 

[ELIMINATOR]

Dave, feel free to chip in Rob.

Right, i have the Yamaha manual in front of me. My bike is a 1990 1200 pre ABS model.

The very last page of the manual has the wiring diagram. The rev. counter is item 8. The ignitor unit is item 30. The wire in question looks to be the light pink one that enters the rev counter on the diagram in between the other two wires.

The connector block that you mentioned earlier then, must? be the block shown directly under the rev. counter on the diagram? Where do you think that the connector block is located on the bike, that the pink wire goes into before connecting to the afore mentioned block? (this is to the right and slightly lower down on the diagram)
On the assumption that there is a break in the wiring, it can't be between the ignitor unit and the coils, otherwise the bike would not run, correct? It looks to split off just below the large connector block (that I asked the location of earlier), one end goes to the coils , the other end to the large connector block. So if there is a break it would be after this.

The logic to me would be for me to put a multi meter from the ignitor unit pink to the rev. counter pink, if there's no connection work my way backwards........ or forwards

Off on a tangent here. On the wiring diagram for the 1100, item 17 is an " over rev. limiter) the 1200 doesn't have one? Does this mean that it won't have the ignition cut if the bike is over revved?

Back to the 1200 wiring diagram:

Item 9in the dash board, "Reed switch" what does that do?

Anyway, my ramblings are now finished

 

[mark2jag]

its because...............

Eliminator. You have let all the smoke escape from the rev counter thats why it doesnt work. On a serious note I do hope you get it sorted. It's bloody frustrating when stuff doesnt work. Sorry If i appeared flippant but my sense of humour doesnt seem as spot on as it used to....

 

[ELIMINATOR]

Ultimately, it's a rev. counter on a 1200 cc bike. My mechanical sympathy would kick in before I was anywhere near the red line. But, as you said, it just doesn't work.

 

[bumpmuncher]

Just remember it red lines at 120 in second gear HTH

 

[ELIMINATOR]

Went and had a start up earlier tonight, just after I got in from work. Thought I'd flick the kill switch once running and maybe try wiggling a connector block or two.

Wouldn't bloody start. First thing I think is that the failed rev. counter was the onset of something more serious. Put the battery on charge, came indoors. Started reading the Yamaha manual on how to fault find it.

Went back outside, fired up, then the rev. counter started working

I'll see what tomorrow brings, my garage is integral to the house, a tad smelling of fumes! I had the garage door shut, I bet SWMBO comments when she gets in at about 8:30

Day off tomorrow, having tyre fitted to GS. No doubt (if it starts) the FJ will be taken out.

 

[ELIMINATOR]

All running correctly................................................. today anyway.