Continuity mistake: When Ash is crawling through the cellar, he finds some of the pages, and he holds them in his right hand. Only problem is, he cut off his right hand earlier and attached the chainsaw to it - the film was flipped so he'd appear to be crawling in the right direction.
Visible crew/equipment: When Ash crashes his car into the tree stump and is ejected through the windshield, you can see the wire attached to the dummy pulled through the windshield.
Continuity mistake: When the hillbilly is killed by Henrietta, blood is spraying everywhere, and Annie is totally drenched by it, but in the next shot, she is totally clean except for the one blood stain mentioned on this mistake page.
Continuity mistake: No matter how many times Ash has blood poured on him or landed in mud, he will always have a clean face with his freshly made scars, scenes after he has been blood bathed or mud wrestled.
Revealing mistake: When the eye is flying toward Bobby Jo, you can see the rig holding the eye as it flies and the wire when it enters her mouth.
Continuity mistake: During the first scene where the "evil force" is chasing Ash through the house, you can see above the rafters, showing that this is not actually the house but a set.
Continuity mistake: After the hillbilly is killed by the Henrietta deadite Annie has a blood stain on her left shoulder. Then she runs into Evil Ash and it has switched to her right shoulder.
Continuity mistake: When Ash is thrown into the cellar he breaks a few of the steps. Later when he goes in to retrieve the pages of the Necronomicon every step is intact.
Revealing mistake: During the scene in the tool shed in which Ash mounts the chainsaw to his arm, you can see duct tape holding the chain bar on the chainsaw; this wouldn't exist if he'd just mounted a chainsaw onto his arm.