https://foc-u.co.uk/mybb/ Thu, 30 Apr 2026 17:38:26 +0000 MyBB https://foc-u.co.uk/mybb/showthread.php?tid=83953 Wed, 14 Jan 2026 13:37:26 +0000 Pal]]> https://foc-u.co.uk/mybb/showthread.php?tid=83953
Have changed them to taper rollers with a kit from a bearing place in Aldershot.

I would expect balls on a smaller bike, but not on something this size. I believe the frame is similar to the Fazer thou, do they have balls as well?

I had a FZS600 previously and I'm sure it was taper rollers as standard on that.]]>
Have changed them to taper rollers with a kit from a bearing place in Aldershot.

I would expect balls on a smaller bike, but not on something this size. I believe the frame is similar to the Fazer thou, do they have balls as well?

I had a FZS600 previously and I'm sure it was taper rollers as standard on that.]]> https://foc-u.co.uk/mybb/showthread.php?tid=83952 Wed, 14 Jan 2026 13:29:50 +0000 Pal]]> https://foc-u.co.uk/mybb/showthread.php?tid=83952 I have a problem with my 2014 Fazer 800.

It has suddenly developed a stuttering misfire at low revs with small throttle openings. I commute daily, so this is a lot of my journey in this state.

Whack the throttle open at higher revs and it goes like a scalded cat, clears out completely but back to lower revs and smaller throttle opening, it comes back.

Run a bottle of injector cleaner through it, made no difference

Serviced 5000 miles ago with new plugs, checked them again and gaps had opened up quite a bit. Replaced with new Iridiums, and initially was OK, test ride of 2-3miles was fine.

Bike was off the road over Christmas in a dry garage when I changed the plugs, test ride was in the dry as well. Bike was under a cover, but it rained heavily overnight before my commute. Not sure if this is connected but I thought I'd add for completeness.

Just read about an ECU reset procedure so will try that.

Bike has 38000 miles on it, and as far as I know has never had the shims checked, it is booked in for this next week. 
Also I tried to buy a fuel filter but Yamaha doesn't list one as it's part of the pump. Didn't know if the plethora of aftermarket ones could be trusted or even if they would fit this rarer bike.

Any help appreciated.]]> I have a problem with my 2014 Fazer 800.

It has suddenly developed a stuttering misfire at low revs with small throttle openings. I commute daily, so this is a lot of my journey in this state.

Whack the throttle open at higher revs and it goes like a scalded cat, clears out completely but back to lower revs and smaller throttle opening, it comes back.

Run a bottle of injector cleaner through it, made no difference

Serviced 5000 miles ago with new plugs, checked them again and gaps had opened up quite a bit. Replaced with new Iridiums, and initially was OK, test ride of 2-3miles was fine.

Bike was off the road over Christmas in a dry garage when I changed the plugs, test ride was in the dry as well. Bike was under a cover, but it rained heavily overnight before my commute. Not sure if this is connected but I thought I'd add for completeness.

Just read about an ECU reset procedure so will try that.

Bike has 38000 miles on it, and as far as I know has never had the shims checked, it is booked in for this next week. 
Also I tried to buy a fuel filter but Yamaha doesn't list one as it's part of the pump. Didn't know if the plethora of aftermarket ones could be trusted or even if they would fit this rarer bike.

Any help appreciated.]]> https://foc-u.co.uk/mybb/showthread.php?tid=83816 Mon, 14 Jul 2025 23:04:51 +0100 Lucky Phil]]> https://foc-u.co.uk/mybb/showthread.php?tid=83816
I go for a longish ride, about 200Km, stop for a couple of hours, then start the ride home again. 
After around 1 hour riding (speed approx 100Kmh) the bike will loose revs and will not accelerate. If i try to rev seems to intermittently rev then stop reving.
I pull to the side of the road and twist the throttle a few time and it seems to rev ok, then off I go for about another 30 minutes, then it will happen again.

I ride to work most days, doing 15 minutes at 60Kmh and around another 15 minutes at 110Kmh on the highway and have no problem.
 

Any ideas would be appreciated.]]>
I go for a longish ride, about 200Km, stop for a couple of hours, then start the ride home again. 
After around 1 hour riding (speed approx 100Kmh) the bike will loose revs and will not accelerate. If i try to rev seems to intermittently rev then stop reving.
I pull to the side of the road and twist the throttle a few time and it seems to rev ok, then off I go for about another 30 minutes, then it will happen again.

I ride to work most days, doing 15 minutes at 60Kmh and around another 15 minutes at 110Kmh on the highway and have no problem.
 

Any ideas would be appreciated.]]> https://foc-u.co.uk/mybb/showthread.php?tid=83778 Mon, 19 May 2025 18:04:48 +0100 kens]]> https://foc-u.co.uk/mybb/showthread.php?tid=83778
The drawings I've seen are different. The pdf manual I have shows one sleeve inside the bearing at each end of the arm. 

The drawing on the part suppliers web site shows two sleeves, 23 & 26 in the drawing below,  at the end of the arm where it meets the frame and one at the lower end. 

The sleeve at the lower end of the arm just slides out. The one at the top does not. I'm wary of using too much force unless its appropriate. 

Any suggestions from folks who know better

Thanks

Ken

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  1747672475678.jpg (Size: 88.29 KB / Downloads: 27) ]]>
The drawings I've seen are different. The pdf manual I have shows one sleeve inside the bearing at each end of the arm. 

The drawing on the part suppliers web site shows two sleeves, 23 & 26 in the drawing below,  at the end of the arm where it meets the frame and one at the lower end. 

The sleeve at the lower end of the arm just slides out. The one at the top does not. I'm wary of using too much force unless its appropriate. 

Any suggestions from folks who know better

Thanks

Ken

  1747672293613.jpg (Size: 22.75 KB / Downloads: 26)

  1747672475678.jpg (Size: 88.29 KB / Downloads: 27) ]]> https://foc-u.co.uk/mybb/showthread.php?tid=83668 Wed, 30 Oct 2024 12:15:58 +0000 Pal]]> https://foc-u.co.uk/mybb/showthread.php?tid=83668 Spindle requires a 14mm hex, didn't have one in my extensive tool kit (former mechanic).
No problem, I'll just use what Yamaha provide.
Now, I bought this bike secondhand, but unless someone has taken out the tool for the front wheel spindle, then I presume that Yamaha don't supply a toolkit that you can take the front wheel off.
My flabber has never been so ghasted.]]> Spindle requires a 14mm hex, didn't have one in my extensive tool kit (former mechanic).
No problem, I'll just use what Yamaha provide.
Now, I bought this bike secondhand, but unless someone has taken out the tool for the front wheel spindle, then I presume that Yamaha don't supply a toolkit that you can take the front wheel off.
My flabber has never been so ghasted.]]> https://foc-u.co.uk/mybb/showthread.php?tid=83630 Sat, 31 Aug 2024 11:29:06 +0100 PottsFZ8]]> https://foc-u.co.uk/mybb/showthread.php?tid=83630
Only had the bike for 1 month.

Really hard to select gears very clunky / notchy.

Removed gear selector arm and removed front sprocket cover. The sprocket and all around it was absolutely clogged with old chain lube and dirt.

Cleaned it all up and refitted cover and gear change arm and its a lot easier to select gears. 

May not work for everyone but I'm a lot happier now ]]>
Only had the bike for 1 month.

Really hard to select gears very clunky / notchy.

Removed gear selector arm and removed front sprocket cover. The sprocket and all around it was absolutely clogged with old chain lube and dirt.

Cleaned it all up and refitted cover and gear change arm and its a lot easier to select gears. 

May not work for everyone but I'm a lot happier now ]]> https://foc-u.co.uk/mybb/showthread.php?tid=83573 Wed, 24 Jul 2024 21:12:02 +0100 PottsFZ8]]> https://foc-u.co.uk/mybb/showthread.php?tid=83573
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  20240724_101944.jpg (Size: 69.2 KB / Downloads: 1) ]]>
  20240724_102013.jpg (Size: 85.15 KB / Downloads: 3)

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  20240724_101944.jpg (Size: 69.2 KB / Downloads: 1) ]]> https://foc-u.co.uk/mybb/showthread.php?tid=83568 Sun, 21 Jul 2024 09:20:08 +0100 PottsFZ8]]> https://foc-u.co.uk/mybb/showthread.php?tid=83568
Has anyone else experienced this and can point me to the solution please.]]>
Has anyone else experienced this and can point me to the solution please.]]> https://foc-u.co.uk/mybb/showthread.php?tid=83311 Wed, 20 Sep 2023 11:01:08 +0100 Jhooch]]> https://foc-u.co.uk/mybb/showthread.php?tid=83311
Looking for some input on an issue I have with my 2012 Yamaha Fazer 800 14,00 miles. I bought it with the issue I’m trying to fix. I have no history on the bike, the dealer I bought it from couldn’t fix it.

Check out the video of my issue - http://youtu.be/50X8uXyvpzE?si=qrf3s8njx5ULxREP

Originally the fuel pump would be working all the time when you key on, then while running it would have inconsistent revs as shown. With the fuel pump relay not switching off, I fixed this buy getting a used ECU. I thought perhaps it would fix both issues but it didn’t. (I haven’t yet flashed this ECU to my lockset, I’m using an emulator until I can actually get the bike running correctly)

I have no fault codes on the dash, and I have tested the following.
[/size]

• [size=1.35em]Intake Air Pressure Sensor[/size]
  
• [size=1.35em]Air Temp Sensor[/size]
  
• [size=1.35em]Cam sensor[/size]
  
• [size=1.35em]Crank Sensor[/size]
  
• [size=1.35em]TPS[/size]
  
• [size=1.35em]Secondary TPS[/size]
  
• [size=1.35em]All 4 coils[/size]
  
• [size=1.35em]Atmospheric pressure Sensor[/size]
  
• [size=1.35em]Fuel pump pressure (Sits a 3.0 bar while the issue is happening)[/size]
  
• [size=1.35em]Fuel pressure regulator (Changed it just to be sure)[/size]
  
• [size=1.35em]Engine Temp Sensor (As shown the revs do come down as the bike gets hotter)[/size]
  
• [size=1.35em]Balanced the throttle bodies (Spot on, no need to adjust)[/size]
  

[size=1.35em]
All parts are within spec or either operate to the genuine manual.
Diag tests on the speedo all show and work correctly.
The spark plugs are sooty, so it looks like it’s over fuelling. The bike as far as I know is completely standard. Has standard exhaust, air filter and as both ECUs are showing the same symptoms, I doubt they have been both mapped.

But as the video shows the tacho jumping everywhere, it does feel like it’s missing, pointing to an electrical fault. But with all plugs being sooty, I can see a plug/coil braking down.
I have already checked multiple forums for a fault like this but had no luck.

Is this an issue with Fazers you seen before?

Any input would be greatly appreciated, maybe I’m being a fool and missing something obvious here![/size]]]>
Looking for some input on an issue I have with my 2012 Yamaha Fazer 800 14,00 miles. I bought it with the issue I’m trying to fix. I have no history on the bike, the dealer I bought it from couldn’t fix it.

Check out the video of my issue - http://youtu.be/50X8uXyvpzE?si=qrf3s8njx5ULxREP

Originally the fuel pump would be working all the time when you key on, then while running it would have inconsistent revs as shown. With the fuel pump relay not switching off, I fixed this buy getting a used ECU. I thought perhaps it would fix both issues but it didn’t. (I haven’t yet flashed this ECU to my lockset, I’m using an emulator until I can actually get the bike running correctly)

I have no fault codes on the dash, and I have tested the following.
[/size]

• [size=1.35em]Intake Air Pressure Sensor[/size]
  
• [size=1.35em]Air Temp Sensor[/size]
  
• [size=1.35em]Cam sensor[/size]
  
• [size=1.35em]Crank Sensor[/size]
  
• [size=1.35em]TPS[/size]
  
• [size=1.35em]Secondary TPS[/size]
  
• [size=1.35em]All 4 coils[/size]
  
• [size=1.35em]Atmospheric pressure Sensor[/size]
  
• [size=1.35em]Fuel pump pressure (Sits a 3.0 bar while the issue is happening)[/size]
  
• [size=1.35em]Fuel pressure regulator (Changed it just to be sure)[/size]
  
• [size=1.35em]Engine Temp Sensor (As shown the revs do come down as the bike gets hotter)[/size]
  
• [size=1.35em]Balanced the throttle bodies (Spot on, no need to adjust)[/size]
  

[size=1.35em]
All parts are within spec or either operate to the genuine manual.
Diag tests on the speedo all show and work correctly.
The spark plugs are sooty, so it looks like it’s over fuelling. The bike as far as I know is completely standard. Has standard exhaust, air filter and as both ECUs are showing the same symptoms, I doubt they have been both mapped.

But as the video shows the tacho jumping everywhere, it does feel like it’s missing, pointing to an electrical fault. But with all plugs being sooty, I can see a plug/coil braking down.
I have already checked multiple forums for a fault like this but had no luck.

Is this an issue with Fazers you seen before?

Any input would be greatly appreciated, maybe I’m being a fool and missing something obvious here![/size]]]> https://foc-u.co.uk/mybb/showthread.php?tid=83271 Sun, 30 Jul 2023 11:15:38 +0100 Pal]]> https://foc-u.co.uk/mybb/showthread.php?tid=83271

I bought a secondhand Fazer 1000 rear guard, which it the same part numbers as a Fazer 8.


My query is regarding the number plate light, as the one on this guard seems loose. I took a look at it, and there are shouldered screws going through rubber bobbins, presumably for vibration damping, but mine seem very loose. Can anyone confirm whether this is correct and yours will move up and down to the touch?]]>

I bought a secondhand Fazer 1000 rear guard, which it the same part numbers as a Fazer 8.


My query is regarding the number plate light, as the one on this guard seems loose. I took a look at it, and there are shouldered screws going through rubber bobbins, presumably for vibration damping, but mine seem very loose. Can anyone confirm whether this is correct and yours will move up and down to the touch?]]> https://foc-u.co.uk/mybb/showthread.php?tid=83255 Tue, 11 Jul 2023 10:27:24 +0100 Frasier]]> https://foc-u.co.uk/mybb/showthread.php?tid=83255 We'll see how much improvement this means, if any.
]]> We'll see how much improvement this means, if any.
]]> https://foc-u.co.uk/mybb/showthread.php?tid=83243 Wed, 28 Jun 2023 10:57:22 +0100 kens]]> https://foc-u.co.uk/mybb/showthread.php?tid=83243
I'm the 2nd owner of a 2012 FZ8. I noticed that the clutch does not seem to fully disengage especially when the bike is warm. For example, when stopped at lights with the engine running, it is sometimes difficult to get to neutral or change gear. While stopped in 1st, if I let the brakes off, there is a small about of drive to the back wheel. But not always. On a journey the problem shows at some stops and then not at others.

I've put up with it till now, but today I stripped the clutch to see if there was anything amiss. All the clutch plates appear flat and measure within the correct thickness. The friction plates are all between 116 and 121 thou. The metal plates are all around 80 thou - don't know the right measurement for those. The springs are the right length. There is no discernible play in the gearbox input shaft. I noticed some play in the outer basket - the one driven by the engine which I measured as 0.004 at the outer edge. I guess that is play in the bearing the runs around the gearbox input shaft.

Also I noticed that the nut at the end of clutch cable at the gearbox end was loose. Could someone kindly describe how that is meant to be fitted. This could be the cause of the problem.

Thank you

[img alt=]https://foc-u.co.uk/data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img] Ken]]>
I'm the 2nd owner of a 2012 FZ8. I noticed that the clutch does not seem to fully disengage especially when the bike is warm. For example, when stopped at lights with the engine running, it is sometimes difficult to get to neutral or change gear. While stopped in 1st, if I let the brakes off, there is a small about of drive to the back wheel. But not always. On a journey the problem shows at some stops and then not at others.

I've put up with it till now, but today I stripped the clutch to see if there was anything amiss. All the clutch plates appear flat and measure within the correct thickness. The friction plates are all between 116 and 121 thou. The metal plates are all around 80 thou - don't know the right measurement for those. The springs are the right length. There is no discernible play in the gearbox input shaft. I noticed some play in the outer basket - the one driven by the engine which I measured as 0.004 at the outer edge. I guess that is play in the bearing the runs around the gearbox input shaft.

Also I noticed that the nut at the end of clutch cable at the gearbox end was loose. Could someone kindly describe how that is meant to be fitted. This could be the cause of the problem.

Thank you

[img alt=]https://foc-u.co.uk/data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img] Ken]]> https://foc-u.co.uk/mybb/showthread.php?tid=83231 Mon, 19 Jun 2023 18:15:31 +0100 Ratters]]> https://foc-u.co.uk/mybb/showthread.php?tid=83231 It was pretty awful, it was to top heavy as in the front end and it handled like crap.
Has anyone else rode one and what do you think?
Not sure if it was just a duff one but I was shocked how much I hated it.
Shame it looked awesome.]]> It was pretty awful, it was to top heavy as in the front end and it handled like crap.
Has anyone else rode one and what do you think?
Not sure if it was just a duff one but I was shocked how much I hated it.
Shame it looked awesome.]]> https://foc-u.co.uk/mybb/showthread.php?tid=83229 Mon, 19 Jun 2023 08:17:33 +0100 Ratters]]> https://foc-u.co.uk/mybb/showthread.php?tid=83229 Currently have an FZS 600.
Cheers!]]> Currently have an FZS 600.
Cheers!]]> https://foc-u.co.uk/mybb/showthread.php?tid=83191 Tue, 16 May 2023 09:54:28 +0100 Pal]]> https://foc-u.co.uk/mybb/showthread.php?tid=83191

Where has everyone else put theirs?]]>

Where has everyone else put theirs?]]>