Hi, new member first time enquiry. Can anyone tell me where to purchase a the kit to stop the water leaks at the manual pump in the kitchen sink. I have 2011 Jayco starcraft 16.52. Regards

G'day Bazza, welcome to the Forum.

You didn't advise where at/near the pump you have leak - note a new lift pump for caravans are a relatively cheap item to purchase - they are not a robust piece of equipment and probably better replaced than repaired.
If the leak is in the water supply line attachment - there is usually just a screw clamp seal around pump spigot. Note, the ability to become a contortionist is handy, due to location under sink inside cupboard.

Thanks, I've found new ones aren't that dear so that's the way I'll go.

New ones often are not much deaer than a repair kit. Found that with my caravans electric pump. I could buy a new pump for about the price of a service kit and it made the job easier and ten times quicker.

Thanks for the advice