2007 breva questions

[frogeye100]

Recently got a 07' Breva 1100 and would like to find out what the final drive fill hole and starter interruptus (spelling?) issues are??? Any other things to check, watch out for?

[Kev m]

I didn't realize there was an issue with the drive fill hole. I don't remember any issue on my 06 I had a couple of years.

As for Startus Interruptus, I don't know why it seems more prevalent on some CARC models. Historically it has to do with the way Guzzi chooses to power the starter circuit through the ignition switch, to a relay, from the relay to the starter solenoid.

The problem occurs if there is too much of a voltage drop between the ignition switch and the relay. This can happen due to a combination of aging components and ambient conditions. Maybe it's made worse on CARC models because of the ECU controlled starter circuit.

But when the problem occurs there's insufficient voltage to trigger the relay which means no power gets to the starter solenoid to trigger the high voltage starting circuit.

So the aftermarket fix is to provide fused power to the one side of the starter relay so when ECU tries to trigger the circuit there's no voltage drop from the ignition switch.

That make sense?

[rdbandkab]

Final drive filler hole?  What's all this then?

Do the "startus interuptus" mod yourself (excellent instructions on the forum) or buy the kit.  Piece of mind against the dreaded "no start".

[Kiwi_Roy]

Kevin is right.
The coils in the solenoid draw over 40 Amps and as he says there's too much Voltage drop through the ignition switch and wiring.
The fix is easy on the Breva, just feed the yellow wire at the Start Relay with a fused wire direct from the battery.

Referring to the final drive fill hole, some owners have stripped the threads but I suspect that can be avoided with reasonable care.

[frogeye100]

Thanks for the info guys.

[Huzo]

The standard advice for buyers of CARCS of yours ( and my) vintage, is to ensure that the swingarm bearings and drive splines are greased properly.
Do the valve clearances and if the TB's need balancing that'd be advantageous..
Has it got a decent map ?
The good advice I got, was to not overfill the engine (or anything else), with oil. Doing so in the engine will contribute to excessive misting and consequent contamination of the butterflies and stepper and will then need cleaning.
DO NOT try to achieve TB balance by adjusting the sacred screw.
I did once and it meant nothing... initially   
Other than that just have a good look around, ride it and wait for something to happen.
Should be solid as a rock.

[frogeye100]

Thanks Huzo,
Seems to run well but when the clutch is pulled in to decelerate rpm seems to drop low but never dies. Guess I need to investigate swingarm and spline greasing. There is supposed to be a great dealer in Austin, AF1.

[Kiwi_Roy]

Thanks Huzo,
Seems to run well but when the clutch is pulled in to decelerate rpm seems to drop low but never dies. Guess I need to investigate swingarm and spline greasing. There is supposed to be a great dealer in Austin, AF1.

I have noticed at idle my Griso idles at one speed but slows down about 100 revs when the clutch is pulled all the way in, this happens when the clutch interlock switch is activated.

[Kiwi Dave]

Seems to run well but when the clutch is pulled in to decelerate rpm seems to drop low but never dies.

I'm confused.  Surely you leave the clutch engaged to decelerate?  Otherwise you'll just coast which will take a long time to decelerate.  What have I misunderstood?

[Huzo]

I have noticed at idle my Griso idles at one speed but slows down about 100 revs when the clutch is pulled all the way in, this happens when the clutch interlock switch is activated.

I think (but am not sure), that the stepper motor should act to bring the idle up to 1100 or so, to compensate for the drag in the clutch when disengaged.
Maybe it's the stepper that's contaminated and needs a tub ?

[frogeye100]

Ok, perhaps it is working correctly. Rpm drops then bounces back to normal.

[Huzo]

Ok, perhaps it is working correctly. Rpm drops then bounces back to normal.

I recently learned a little bit about stepper function that I didn't know before..(obviously).
The electronic brain will know that the idle has dropped and the ecu will tell the stepper to adjust the mixture to achieve the target value.
Ingenious little device it is too.
I hacksawed my old one to bits and saw the little motor that acts on a screw which cranks the needle thing up and down as commanded to re set the revs.
Cool...!

[ken farr]

Recently got a 07' Breva 1100 and would like to find out what the final drive fill hole and starter interruptus (spelling?) issues are??? Any other things to check, watch out for?

I believe you are refering to the vent on the top of the final drive.  It needs to be kept clear, Pete Roper had a very nice set up.
Basically a banjo bolt and a hydraulic line run up to an area where no outside water could intrude into the box.
Someone will probably be able to explain it better than I.

Nice looking machine, enjoy it.

kjf