Villiers engine on Anzani Lawn rider

[vhgmcbuddy]

I have just purchased my Lawnrider knowing that it had been left for years and didn’t run
I have checked over the mag cleaning the points and checking the capacitor but can’t be certain that the timing is right as I couldn’t find any instructions.
The carb was badly blocked up but both the jets are now cleared and flowing test fluid. It does need a new gasket that I have ordered.
I can get it to fire and sometimes multiple fires so the ignition can’t be far out but it will not run
Help please

[vhgmcbuddy]

Update on above
After many many pulls the number of fires increased until it ran for at least a minute before stopping. The throttle was fully open but the speed only rose a small amount and the governor flap did not attempt to operate.
Suspect it maybe significantly retarded.
There is an arrow on the flywheel which I have aligned to TDC as there is no marker to align it to anywhere on the block or crankcase as far as I can see

[vhgmcbuddy]

Here is picture of the engine

Attachments:

1. 

[wristpin]

Looks like a Villiers Lightweight, see if this helps
https://www.dropbox.com/s/6w8hkrr7k14y8od/Villiers%20Lightweight%20overhaul0001.pdf?dl=0

EDIT sorry it won’t!! I’ll sort something else out.

This should!
https://www.dropbox.com/s/gnqkmtpxpx6yay9/Villiers%20Lightweight%20ignition0001.pdf?dl=0

[vhgmcbuddy]

Many thanks for this. It certainly looks a lightweight. Does it have a numbertype other than 512/515 there is plate on it saying 103E I think
The timing info was useful but didn’t give the actual values for this engine. I think the data is on page 7. Any chance of sending ?

[wristpin]

Timing data etc
https://www.dropbox.com/s/9xr8b7gkavl2x4e/Villiers%20lightweight%20data0001.pdf?dl=0

Sorry, had assumed that you would find the marker on the back plate.

[vhgmcbuddy]

Thanks, you are a life saver for my machine

[vhgmcbuddy]

The engine very occasionally will now burst into healthy life but stop after a few seconds otherwise it won’t start

Spinning it with my electric drill shows that spark voltage is only 4kvolts. Seems far too low to me. Apart from a new mag coil (25055) is there any cure?
And if not where can get a good one from?

[charlie]

I have found if a magneto is suspect it is far easier to change coil, condenser and points all at the same time. A more expensive way to solve problem but it does mean everything is new and should give years of trouble free running. Also only requires setting timing once.

[Author]

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