OutdoorKing Repair Forum Forums Restoring, Customising and Modifying Victa Walk-Behind Rotary Mowers Victa Mower, something to learn on

Thank you so much for your reply! What you say about the spring makes sense, and to be honest, I am guilty of letting go of the cord, so I promise to not do that again with any of my mowers

I keep having to remind myself the purpose of this is to learn, not to necessarily fix for the sake of fixing, unless it is viable to do so, so I thank you for directing me to the zip tie and why this may have been done, and how this could have had disastrous consequences for the motor.

Below is a short video and some pictures of the piston and rings, hopefully they give an indication of the condition.

[video][/video]











Could I ask, how much scoring is too much scoring? I guess in a real life situation, you would recognise a loss of power (I assume that's what happens?), or if you had the equipment, you could do a compression test, but without a compression test, if one was to do a visual inspection and found this, would it then become either a parts mower, or need to be pulled apart and further inspected? Seems to be a lot of carbon build up around the muffler port, and I think that is carbon below the rings, and in the groves, is that what has likely caused the scoring? From reading, my understanding is that this side of the piston is likely to be the worst? How would the cylinder be effected, is this now a mower waiting for a donor piston, or is the cylinder likely to have been effected too.



I had a good read of this:

https://www.outdoorking-forum.com.au/pages/Victa/Carby%20Information/Late%20Model/Victa%20G4%20Carby.pdf

(thank you to the person who posted this).

If I understand the way the governor works, the speed of the motor and hence the spinning of the flywheel causes a minor vacuum between the diaphragm cap and the diaphragm as the fins suck air through the tube. Based on this, if I was to check the integrity of the diaphragm, put it back together and blow into the tube, would I be able to get an idea of if the cap is leaking (if I understand this top section above the diaphragm correctly, it is effectively a sealed unit, and air should not escape)?

Thanks again for your assistance, I would love to keep this going, I am doing my own homework as I go, so hopefully it isn't coming across as me just cheating on my exam and asking to be spoon fed all the answers

Cheers,

Camo