Engine runs well, but there is a crack in the cylinder (plastic housing)

Complete with reversible screw.

Engine
Engine brand: Farymann
Engine type: 29 A 30
Hours: No
Year of construction: –
Power: –
Speed: –
Number of cylinders: 1
Fuel: Diesel

Reversing gear:
Ratio: reversible propeller
Dimensions:
A = 565mm
B = 460mm
C = 600mm
D = 160mm
E = *three-point
F = 420mm