dnaj
New member
- Location
- Pennsylvania
OK, I bought this 750S a couple years back, ran well but suffered from the dreaded slow starter spin - but would always start with a hit or two on the button. The previous owner claimed to have the starter out and repaired and ran with a lithium battery. Don't think he went to four brushes tho. Shortly thereafter the starter relay went, so I parked the bike without really assessing it much.
Now I am installing the battery cable upgrade with instructions from this group but noticing weirdness on the bike. Most of it is not a big deal. The retainer nut is missing on the air box. The breather hose is missing. The starter cover is missing. Few of the fairing bolts match. Not sure the pressure regulator is connected correctly - the vacuum side merely sits open in the airbox, etc. Looks like he used only silicone for the engine cover gasket, etc. Is there a good source for Zane parts?
More concerning is the yellow filth clogging my throttle bodies and intake manifolds, tho it does seem to diminish as it enters the cylinder head. I will examine the piston tops the combustion chambers with a bore scope. This looks like it came through in the fuel, which means it must be some liquid which can pass through the injectors. The injector tips are clean and the bike ran very well.I've seen this in carbureted bikes with a tank liner failure, but this bike has no cream in the gas tank, but that left a gritty substance in the intake.
This substance feels like soft powder. I'm guessing I should pull the fuel pump - is there a screen there?Is this possibly some residue from the OEM tank interacting with ethanol? Or perhaps some additive was used. Has anyone seen this with their Laverda. I'm actually thinking about walking away from this one.
Photos attached
Now I am installing the battery cable upgrade with instructions from this group but noticing weirdness on the bike. Most of it is not a big deal. The retainer nut is missing on the air box. The breather hose is missing. The starter cover is missing. Few of the fairing bolts match. Not sure the pressure regulator is connected correctly - the vacuum side merely sits open in the airbox, etc. Looks like he used only silicone for the engine cover gasket, etc. Is there a good source for Zane parts?
More concerning is the yellow filth clogging my throttle bodies and intake manifolds, tho it does seem to diminish as it enters the cylinder head. I will examine the piston tops the combustion chambers with a bore scope. This looks like it came through in the fuel, which means it must be some liquid which can pass through the injectors. The injector tips are clean and the bike ran very well.I've seen this in carbureted bikes with a tank liner failure, but this bike has no cream in the gas tank, but that left a gritty substance in the intake.
This substance feels like soft powder. I'm guessing I should pull the fuel pump - is there a screen there?Is this possibly some residue from the OEM tank interacting with ethanol? Or perhaps some additive was used. Has anyone seen this with their Laverda. I'm actually thinking about walking away from this one.
Photos attached
