Slabby 750 running on 3

[Harry66]

Hi all,

First post.  Hopefully not a really dumb question.

Bought a 750H from a bloke who stored it for 10 years.  Had someone Ultrasonic the carbs and service it.  Tank was drained for storage,  and I drained again after first fuel.  Looks fine.

Did a track day at Cadwell PS event.  Ran ok.   This weekend dropped it putting on paddock stand (muppet).  It was a bit of bigger to start, but then ran ok.  Took for run today.  After  a short distance lost power, like running on 3.  Nursed it home.  #4 exhaust not as hot as others.  Fuel pissing out of vent pipe between 3 and 4 carb, drain of carb 4 (seemed odd) and bottom of airbox.

Any thoughts?  or carbs out?

Thanks

Harry

 

 

 

[Fula28]

Carb float seat on that no,4 pot either tap the carb with screwdriver handle (plastic) or pull em out again check seat, they do that if dropped or left a long while, just needs releasing . Overfueling is due to it not shutting off.

[Harry66]

Cheers mate.  Will try gentle percussion then.  Thank you!

[Katana]

if its not the seat it will be the oring under the brass bowl the float valve sits in they go hard and let fuel past

[Harry66]

Thanks.   Started ok after gentle tap.  Running on 4.  A bit smokey which I guess due to  a lot of unburnt fuel in there?  Will take it out tomorrow to blow out.

the fuel tap has on, res and pri.  When do I use pri?   Plus, Does this mean it is import?

cheers.

[teltwosheds]

Pri is for prime. the tap pushes a tang onto the diaphragm  thus allowing free flow of fuel ;-)  Mostly used when the bike has been standing for a while, or just refilled after running out of fuel. HI :-)

 

[p4ddy]

I wish i was as lucky as you.  Mine was a scored barrel so it was a strip down rather than just a little 'tap' with a screw driver handle.

[Harry66]

Ouch.  I was lucky then!   Runs ok now.  A bit lumpy, needs an Italian tune.