Modern Vespa

Hi there I have a washer behind my variator that sits up against the oil pump belt
Do I need to replace this washer or can I leave it off thx

Hi mate,
If you leave it off you will shread the belt, it's there to keep the variator aligned with the rear pulley
Cheers Andy.

Cheers Andy
What's the cog called that the variator sits on ? And is that easy to replace as my fan was chewed up and looks like the end has got few wear marks

What cog?
Piccies please
Cheers Andy.

This one what the variator sits on

Hi mate that "cog" is the crank,and it looks to be in near factory fresh mint condition, the cog shaped wheel that holds the variator plastic fan in place is made from high tensile steel as it is used to turn the engine when the kickstart is engaged, trust me it will not be worn.
Cheers Andy.

Ok thx
It's just I put some new rollers in which were about 1mm bigger in hight than the others when all assembled and only went 50 yards and it sheered my plastic fan and loosened the holding nut
I'm hoping that it don't do the same again thx

You my friend are a very very very lucky man 999 times out of a very1000 when the variator nut comes loose, it's new engine time as it's cheaper to replace the engine than the labour involved to change the crank.
Everytime that nut is removed it should be renewed,the use of locktight applied and torqued up to its specified value, failure to adhere to my advice will most likely lead to catastrophic engine failure .
Cheers Andy.

Thx mate
Fingers crossed it works then

What's the best lock time m8

Locktight threadlock blue
Cheers Andy.

Thx Andy
Am I best leaving it till I get the torq from work or risk driving it to work 14 miles??

If its under torqued leave it, please. There's a thread here that shows the consequences of not following andy's advice. Your nice looking crank will be worn smooth if it comes loose again, you are a very lucky your crank survived the first time, the Vespa buddah is watching your back.

Wow you dodged a bullet and you need to ask.
Leave it at home, as it could be the dearest 14 mile journey you ever made, a limo chauffeur driven would be cheaper than a replacement crank.
Cheers Andy

Do not ride until the variator nut is torqued to spec. Andy knows what he's talking about.

Thx everyone I will do thx
I've found its torq to be upto 59~61 lbs/ft for the 1/2 pulley/crankshaft
 nut. 82mns do you think this is correct thx
Thx again for all your advice

82 newton meters sounds about right.
Cheers Andy

Thx Andy

Just like to say thanks to everyone for there kind words of advice,
I left alone and borrowed a torq from work and got some Blue loctite and its all back together and back on the road,
I can only say that i was a LUCKY MAN.
Thx