Hitachi Zaxis 250 Zx280 Zx350 Operators Manual Hitachi ZX250 ZX280 ZX350 operators manual Serial No. ZAXIS250 020001 and up ZAXIS280 020001 and up ZAXIS350 050001 and up. 364 pages. PDF. Download 14.95 USD X The seller macthree offers you 40.0% on each sale!