3c spark plugs

[Chrisninja]

Hi all I have a laverda 3c which I've purchased new plugs for I've replaced the two outside ones but the centre is more troublesome .I can't seem to get on it even with a long reach box spanner .anyone have any ideas .Next step take the tank off

 

[Peter T.]

Yes, take the tank off. Otherwise you will not reach the centre spark plug.

 

[philw]

When you take the tank off make a note of the throttle/clutch cable routing, access to the mid plug is not possible without tank removal.

 

[Chrisninja]

Many thanks guys first bike I've had to tank off to change the plug.o well If that's the way then I have to go with it thanks.

 

[Paul Marx]

A right pain when the plug dies in the middle of nowhere.

Paul

 

[Chrisninja]

Is there a go to person for changing kph nd gauge to mph is it possible to do it yourself

 

[pf1]

You can have the face changed but the mileometer reading stays km.

 

[iis_iis]

FWIW, hand start the new plugs, never use a retaining plug socket to start the plugs, perhaps some copper grease sparingly on the plug threads. Watch the choke cable assemblies, can get caught and pull into "shelfing" the bowden cable outer(s), ie the choke is open at maximum, engine starts real good, then behaves like a steam engine. NGK BP8ES are very reliable, low cost in box of 10. Hook up with other Laverda riders, few things in life are superior to a bunch of 180's on the cam.... HTH j

 

[The Sock]

This is what I've always used. Removes all three plugs with the tank in place.

 

[Chrisninja]

What even the centre plug

 

[Perry]

Same here. Never had a problem getting at the centre plug and that's with deep plug spanner and tommy bar. 80 jota , more room ?

 

[The Sock]

What even the centre plug

Yes, Chris, all three. Been removing mine, with this one, since '76.
DO NOT spin the engine up with the plugs out, unless plugs are fitted in the caps and securely earthed. Otherwise, damage can be caused to the ignition system.

 

[Diablo Loco]

This is what I've always used. Removes all three plugs with the tank in place.

View attachment 67215

A nice looking piece of unobtainium you have there.

 

[Paul Marx]

A nice looking piece of unobtainium you have there.

Is it?
I'll have a look next time I'm in a general auto shop. I'm sure that there's racks of them.

Paul

 

[SteveRocker62]

Been in my tool roll for many years. A Halfords special.

 

[Gerald]

Bought new 1980

 

[Chrisninja]

I took tank off then trying

 

[Chrisninja]

I took tank off then tried the exact plug spanner you suggested and hay presto got it out . I didn't realise middle plug is tilted to the left hand side . I was trying to come down straight on the plug

 

[Diablo Loco]

A nice looking piece of unobtainium you have there.

Is it?
I'll have a look next time I'm in a general auto shop. I'm sure that there's racks of them.

Paul

History and Patina.

 

[CLEMTOG]

removing the tank on 180's is a piece of piss, that centre plug thread is vulnerable to getting cross threaded and I wouldnt remove the plug (at home), without giving the pocket a strong blast of compressed air anyway, I use a 3/8th very long extension and a plug socket with a rubber insert, the very long extension gives you a good line on getting the plug straight, and as iis says, (strong pint here John) get it well and truly started by hand before using mechanical leverage to tighten it, I use a sliding tommy bar.
CLEM