Hi my name isXXXXX will assist you.
.There are 2 versions of the fuel pump filter one is up (old design) carb line is on the front of pump. then The filter down (new design) fuel line to carb is at the rear.
Check out these diagrams the lever on the pump can go over the cam or under the cam. To determine if you have old design or new design I will need the engine serial number. !987 would be old design but need to determine if the engine is 87-89. The 87 old design 89 new design.
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