Toro LC175FDS - Piston; Piston Ring Specifications

37
Piston Skirt Outside Diameter
Measure and the piston skirt outside diameter
10mm from the skirt base and 90°to piston pin hole.
Engine
Standard
Service Limit
175FDS-1
2.951 - 2.952”
(74.970-74.980 mm)
2.939”
(74.65 mm)
180FDS-1
3.1484 - 3.1488”
(79.97-79.98 mm)
3.1437”
(79.85 mm)
Piston to Cylinder Clearance Specification
Engine
Standard
Service Limit
175FDS-1
180FDS-1
0.00059 - 0.002”
(0.015-0.052 mm)
0.0047”
(0.12 mm)
Piston Ring to Groove Clearance
Engine
Standard
Service Limit
175FDS-1
180FDS-1
Top /
Middle
Rings
0.00059 - 0.00177”
(0.015-0.045 mm)
0.0059”
(0.15 mm)
Piston Ring Width
Engine
Standard
Service Limit
175FDS-1
180FDS-1
Top /
Middle
Rings
0.077 - 0.078”
(1.97-1.99 mm)
0.069”
(1.75 mm)
3