Petrol self-priming transfer pump

A light petrol pump for filling tanks and bowsers, emptying ponds and washdown. Bought for portability and price, not for continuous duty.

Features

Light enough for one person to carry, which is the whole reason it exists — an equivalent diesel set weighs roughly double.
An aluminium casing keeps weight down and wears faster than cast iron in silty water.
Petrol fuel costs more per hour than diesel, so the economics reverse once annual run hours get high.
Recoil start and no battery means nothing to go flat between uses, which suits equipment used a few times a month.
Suction and delivery hose, strainer and footvalve are normally bought with the pump and are what actually decide its performance.

Figure	Typical range	Unit	Why it matters
Maximum flow	300 - 1 200	l/min	Compare at the head actually required.
Total head	25 - 35	m	Limits how far and how high water can go.
Suction / discharge size	50 / 80	mm	Fixes the hose set.
Dry weight	25 - 55	kg	The reason this pump is chosen.
Casing material	aluminium		Light, and shorter-lived in silty water.