Hitachi H 45MRY Technical Data And Service Manual page 25

Move the crank pin of the Crank Shaft [42] then move the Piston [35] to the top dead center. Insert Spring (B)
[32] into the cylinder case of the Cylinder Crank Case [47] then insert the assembly of the Cylinder [30], Slide
Sleeve [31] and Striker [28] into the Cylinder Crank Case [47] (Fig. 22).
Slide sleeve
Mounting the fan guide
Mount the Fan Guide [106] to the Housing Ass'y [114] paying attention to the direction of the 0.05 convex line
(Fig. 23).
0.05 convex line
Striker
Cylinder
Cylinder crank case
Fan guide
Housing ass'y
Spring (B)
Piston
Fig. 22
Fig. 23
--- 22 ---
Crank pin portion
Crank shaft