See part R-8 in the diagram

Washer - 8mm 90471-ZE1-610

Works with your model HS521!

$6.35

Works with your model HS521!

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This part works with the following brands:

This part works with the following products:

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This part works with the following models:

ERP Number: ERP10022700
Manufacturer Part Number: 90471-ZE1-610

Brand	Model Number	Description
Honda	GX120K1	Engine - Engine
Honda	GX120RT2	Engine - Gx120rt2 Krs4 Gcbmt-1000001-9999999
Honda	GX120T1	Engine - Honda Gx120t1-Type-Lh Parts
Honda	GX120T3X	Engine - Gx120t3x Lxuz Gccht-1000001-9999999
Honda	GX120U1	Engine - Small Engine
Honda	GX120UT1	Engine - Small Engine
Honda	GX120UT2	Engine - Gx120ut2 Lxm2 Gcbmt-1000001-9999999
Honda	GX120UT3	Engine - Gx120ut3 Lxuz Gccjt-1000001-1398593
Honda	GX120UT3X	Engine - Gx120ut3x Lxuz Gccjt-1398594-9999999
Honda	GX140	Engine - (Type LX)(VIN# -1000001-3263982) Small Engine
Honda	GX160H1	Engine - Honda Gx160h1-Type-Lac Parts
Honda	GX160K1	Engine - Small Engine
Honda	GX160T1	Engine - Small Engine
Honda	GX160T2	Engine - Gx160t2 Ldw Gcbrt-1000001-9999999
Honda	GX160U1	Engine - Small Engine
Honda	GX160UT1	Engine - Small Engine
Honda	GX160UT2	Engine - Gx160ut2 Lx2 Gcbpt-1000001-3999999
Honda	GX160UT2X	Engine - Gx160ut2x Lx2 Gcbpt-4000001-9999999
Honda	GX200	Engine - Small Engine
Honda	GX200T	Engine - Small Engine
Honda	GX200U	Engine - Small Engine
Honda	GX200UT	Engine - Small Engine
Honda	GX200UT2	Engine - Gx200ut2 Lxau Gcbtt-1000001-1999999
Honda	GX200UT2X	Engine - Gx200ut2x Lxau Gcbtt-2000001-9999999
Honda	HS521	Snow Blower - Snow Blower
Honda	HS521K1	Snow Blower - Snow Blower
Honda	HS621	Snow Blower - Snow Blower