Laverda 3c

I've just ordered carb rebuild kits.its the starting I'm not sure about why itook my transit to start it it even had to be running to turn it over with any speed
 
Is the starter motor weak or is the engine tight…?
Might pay to check more stuff, if it’s been sitting a long time then anything you take apart and inspect will be time we’ll spent 👍
 
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Look at the main power wire exiting the fuse box, it makes a sharp bend and the wire could have an internal break, my 3C #1598 did the same thing, took some time to find that one, also pull the plugs and get one of those cheap scopes and take a look in there ,if it looks good spray a little lubricant in each cylinder, put it on the center stand and put it in gear , turn the wheel by hand and see if it turns over easy
 
If your starter is getting juice, I doubt it's the relay. Try feeding it direct with jumper leads. If all's well then, it's likely an earth. If not, starter commutator dirty or brushes. (or rings are rusted in the bores :) )


Paul
 
I have had starting issues for a while - would only start when battery was tip top, otherwise slow or just a solenoid click. Changed out the battery a couple of times which resolved the issue temporarily but eventually Redax supplied me with a reconditioned stater and it just completely changed the behaviour, starter now spins the motor rapidly and starts easily every time. So for me it was a starter problem - this was on a 750SF1.
 
First thing I'd check is how easily the motor turns by hand with the plugs out. Better to eliminate the possibility of rusty innards than force it to run against its will! Then starter reco is an easy next step if all is good.
 
Reminds me that many years ago, we bought a Montjuich type 500 for my then wife. Rearsets, bell mouths, the works. It turned out to be a full Formula engine. Bike had been stored many years and wasn't running.
Back home, it turned out that engine was seized solid, rings rusted in the bores. Took a lot of patience to free that up. Diesel, a piece of wood and a lump hammer. And a lot of patience.

It turned out that the previous owner had washed it before storing it. It was very clean only hosing down a bike on bell mouths isn't a good idea.

Paul
 
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