Visible crew/equipment: Shortly before Bobby Jo is attacked by the tree, a tripod, hastily covered by foliage, is visible behind her. (00:52:20)
Visible crew/equipment: When Evil Ash picks up Jake, to throw him, from a ground-shot you can see a black cable attached to Ash's back, and to the right side of the screen a crewmembers hand comes into view. (00:56:15)
Visible crew/equipment: When Annie pulls in the hillbilly guy after accidentally stabbing him with that ghoulish knife she pulls him into the cabin and you can see the knife bend like rubber against the door. (01:00:50)
Revealing mistake: Evil Ash has no hand (just a stump) however when he grabs Annie and throws her into the wall, he has his right hand back. (01:01:10)
Deliberate mistake: When the hillbilly is dragged into the cellar, the resulting explosion of blood has a much greater volume than the actual amount of blood in a human body. This is done to support the campy gore motif of the film. (01:03:20)
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. (01:03:30)
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. (01:03:40)
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. (01:06:15)
Visible crew/equipment: When Henrietta is holding Annie up in the air you can see the shadow of the wire holding Henrietta on a ceiling rafter. (01:08:40)
Continuity mistake: When Henrietta is attacking Ash, the clock in the background alternates from reading 1:15 or 1:30. (01:09:00)
Continuity mistake: In one scene, Ash finds some pages from the Necronomicon lying in a mud puddle. He picks up the pages, and they're dry. (01:10:00)
Visible crew/equipment: When Ash and Annie hug, before the shelves crash down, you can see the head of a crewmember, crouched down behind the ledge, bobbing around. (01:11:05)
Revealing mistake: During the scene when the evil Henrietta flies up from the basement to attack the girl, while she is in the air you can see the wire holding her up, a split in the butt of the latex costume and as she turns to see Ash, sweat pours out her ear. (01:11:20)
Revealing mistake: During Ash's fistfight with Henrietta near the end, the blade of the chainsaw can be seen flopping like rubber. (01:12:10)
Continuity mistake: When the evil force is speeding towards the cabin door, when the trees are attacking the cabin, the shotgun holes in the door are missing. During alot of the film the holes change size/shape too. (01:12:30)
Visible crew/equipment: When Ash is being sucked into the vortex at the end of the film, as he flies through the forest you can see the harness and wire attached to him, making him fly. (01:15:15)
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.
Continuity mistake: During the movie, you can see that the metal handle of the chainsaw switches between being thin and thick. This is because they had replaced the handle half way through the shoot and had just painted the regular one silver and brown.
Other mistake: When Evil Ed picks up Jake and throws him headfirst into the lightbulb, watch the speed that he hits it and then falls away from it; he moves far to slowly.
Factual error: In the "Groovy" shed scene, Ash holds a double-barreled shotgun in one hand and saws through the gun barrels with his newly-mounted chainsaw in about 2 seconds flat. He could no more cut through a hardened steel shotgun barrel with a chainsaw than he could cut through a marble counter-top with a butter knife.
Answer: Sam Rami could not get the footage of Evil Dead to use in the sequel, so he remade the movie in a shortened form for the beginning. Since Linda was the only original character other than Ash to come back he included her in the recap but deleted the others as not to waste time. An in universe answer could be that trauma of losing his friends made Ash block them out and rewrite history in his head, except for Linda who comes back to haunt him in the movie so he is forced to deal with it.