ZT173YMM-B cylinder head cylinder head assembly
ZT173YMM cylinder piston assembly B (with cylinder pad and cylinder head pad)
ZT173YMM transmission mechanism subassembly
ZT173YMM left crankcase assembly
ZT173YMM right crankcase assembly
ZT173YMM left crankcase cover B assembly
ZT173YMM right crankcase cover assembly B
ZT173YMM start mechanism assembly
ZT173YMM timing chain tensioner assembly