Mac Allister Pressure Washer MPWP140ITS - Trigger Gun Leak Repair

After being gifted this washer it needed some TLC. The main issue was a leak from the trigger gun which got so bad it would pop the hose off.
Thanks to Solent Tools I was able to obtain the trigger valve assembly and a pack of o rings to get this washer back up and running.
Part numbers:
Valve assembly: MP18-203 (4100910, 4100920, 3500090, 4382480):
solenttools.co...
O ring kit: 4102070
solenttools.co...

[@sane52668]

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[@fawziyahbegum1277]

Hi what’s the ring called on the website I’ve got the same issue and want to try putting the O ring into it I’ve just got a different model

[@ChrisHorswill]

Is this the o-rings for the hose where it goes in to the gun?
If so, this is the kit I bought which should have everything:
solenttools.co.uk/product/solent-tools-o-ring-service-pack-compatible-with-macallister-mpwp140its/
Here is the exploded diagram too:
solenttools.co.uk/macallister-mpwp140its-parts-diagrams/

[@MovieSoundTrackMan]

Price of the new plastic part you installed?
Thanks for the excellent, informative video.
Stuart

[@ChrisHorswill]

Cheers Stuart. It was £8.95 delivered.