Hedgepeth
New member
what size wrench fits th engine block draincock on a new holland tz18da.
I have no idea but I'd take an adjustable spanner (wrench), fit it to the draincock and then measure that. It could be metric.
When I got my tractor I bought a number of spanners & ratchet 'kits' to do future maintenance/repairs... only to find that the most common spanner width was 17mm. NONE of the kits included this size, so it was off to the auto shop to add a couple to my collection. I also marked them with brightly coloured electrical tape to distinguish them from the others.