A2 - Y4mk2 Y40 250cc engine

For shared parts, see the Y4 250 engine section.

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The Stormer 250 was introduced in 1970
These engines were adevelopment of the Starmaker 250

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A2 - Y4mk2 Y40 250cc engine

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NUT, CYLNDR HEAD

WASHER, CYLNDR HEAD. (LARGE)

HEAD CYLINDER (FB TYPE)

250/370 CYLINDER STUD

CYLINDER W/LINER Y4 Mk2, 250

LINER 250 BLANK NOT BORED

STORMER EXHAUST FLANGE

250 CYLINDER BASE GASKET

5/16 UNF STUD

INLET MANIFOLD GASKET

SCREW, INLET MNIFLD

MANIFOLD, INLET Mk1 AMAL, Y4 250