Hitachi SWD 135B Home › Forums › Trade Technical & Spare Parts Forums › Trade Technical Enquiries › Hitachi SWD 135B This topic has 1 reply, 2 voices, and was last updated 17 years ago by blokes. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts March 13, 2009 at 9:24 am #44191 blokesParticipant Does anyone know what F4 code on Hitachi SWC 135B Means? March 13, 2009 at 6:37 pm #280097 FlymanParticipant Re: Hitachi SWD 135B If its about 20 years old and originally made by Servis in Birmingham 😯 then its a motor fault and probably needs carbons. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In