Okie dokie, problem solved. With this info you should be able to source a suitable replacement fork swap. The KL250 was also listed as a KLR250 for that year. The stem part# is 44037-1006 and is used on the following bikes:
This Kawasaki 44037-1006 STEM,STEERING is used on these models and components:
KL250-A1 KLR250 FRONT FORK ('78-'79 KL250-A1-A1A-A2)
KL250-A1A KLR250 FRONT FORK ('78-'79 KL250-A1-A1A-A2)
KL250-A2 KLR250 FRONT FORK ('78-'79 KL250-A1-A1A-A2)
KL250-A3 KLR250 FRONT FORK ('78-'79 KL250-A1-A1A-A2)
1981 KL250-A4 KLR250 FRONT FORK ('78-'79 KL250-A1-A1A-A2)
1978 KL250-A1 KLR250 FRONT FORK ('78-'79 KL250-A1-A1A-A2)
1978 KL250-A1A KLR250 FRONT FORK ('78-'79 KL250-A1-A1A-A2)
1979 KL250-A2 KLR250 FRONT FORK ('78-'79 KL250-A1-A1A-A2)
1980 KL250-A3 KLR250 FRONT FORK ('78-'79 KL250-A1-A1A-A2)
1981 KL250-A4 KLR250 FRONT FORK ('78-'79 KL250-A1-A1A-A2)
Here is the parts diagram for that Y/M/M
