Part three in a five-part series: Restoring an Amanco 2-1/4 HP Hired Man
Cylinder head shown with the two valve seats that had broken off and one of the rusty valves. The damage can be seen to the exhaust, where part of the thread has broken off.
Finished cylinder head with new valve seats and repaired exhaust thread. The original repair to the rocker pivot was left unchanged.
The cylinder head with the two valve seats in the middle being machined to give square faces for the new seats, then bored out for the stems of the new valve seats.
The igniter in place on the engine, the bare metal showing on the extension piece fitted on the trip finger.
The repaired exhaust rocker arm mounted on its pivot. The repair to the tip, with the tongue into the old metal, is visible. A new pivot screw and an adjustment bolt were made.
The old pushrod and the replacement, fitted with the original catchplate and roller. The new pivot pin and components of the igniter trip are also shown.
The two replacement valve seats, which had to be tapered to match the originals as well as the two new valves. Their stems were cut to length after lapping the ports in the head.
More Pride and Joy – Another of Peter Rooke’s Amanco eng-ines: This engine is all original including the planks it is mounted on. It has been on a local farm near Notts, England, since 1914. It even has the nameplate of a local supplier! This is slightly earlier than the Hired Man in this series, as the magneto is parallel to the gears rather than at a 90-degree angle with a beveled gear wheel.