I have in the garage this Honda unit valve check 31850-NF5-950
I can checking my RC valve (NSR 250 sp MC28) with HRC NF5 Valve cheking unit assy
The valve checking unit to be used to check the motion around the RC valve on RS250 NF5
I don't know if run to MC28 PGMIV !!! seems to suffice simply plug 3Pin switch ON-OFF and move the switch unit to Low or Hi Mode.
I hope some "NSR Guru" can help me
Thanks
Alessandro from Tuscany
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Alessandro Cucco
via Brigate Partigiane 43c
54033 Carrara (MS) Italy