One Small Favour/Quick guide

Walkthrough
''NOTE: Many NPCs are involved in other quests and activities. Some chat options provided below may be inaccurate depending on your state in those quests and activities.''

Agreeing to the favours

 * Talk to Yanni Salika in Shilo Village (north of the bridge at the quest icon). (Chat 2-5)
 * Talk to a Jungle forester south of Shilo at the tree line. (Chat 1-1)
 * Talk to Brian in the Port Sarim axe shop. (Chat 3-2-4)
 * Talk to Aggie in Draynor Village. (Chat 2-3-2)
 * Talk to Johanhus Ulsbrecht near the prison inside of the H.A.M. base. (Chat 4-3-2)
 * Talk to Fred the Farmer NE of the H.A.M. base at the sheep sheerer quest start point. (Chat 3) (4 if you haven't done Sheep Shearer)
 * Prepare a bowl of hot water and take a pot in the Lumbridge Castle kitchen if needed.
 * Talk to Seth Groats in the chicken farm east of River Lum. (Chat 2) Gather 3 steel bars.
 * Talk to Horvik at the armour shop in Varrock. Give him 3 steel bars. (Chat 3-2)
 * Talk to the Apothecary in Varrock south of the Western bank. (Chat 3-2)
 * Talk to Tassie Slipcast in the Barbarian Village at the pottery icon on the minimap. (Chat 1)
 * Talk to Hammerspike Stoutbeard in the western portion of the Dwarven Mines (SW of the ice mountain entrance). (Chat 3-4-2)
 * Talk to Sanfew on the top floor of the Taverley herblore shop. (Chat 2-2-3-1)
 * Add your bowl of hot water to a teacup (one spawns in the building north of Sanfew). Add a harralander, 2 guam leaves, and a marrentill.
 * Talk to Captain Bleemadge on top of White Wolf Mountain at the gnome glider icon on the minimap. (Chat 2-4)
 * Talk to Arhein on the Catherby docks south of the bank. (Chat 4-1)
 * Talk to Phantuwti Fanstuwi Farsight in the building north of the Seers’ chapel. (Chat 4-5-1)
 * Enter the cave SE of the fishing guild. Go to the most NE room. Right-click and search the sculpture.
 * Talk to Wizard Cromperty in NE Ardougne at the transportation icon. (Chat 2-4-2)
 * Talk to the Tindel Marchant on the Port Khazard south dock. (Chat 2-1)
 * Talk to Rantz in the eastern Feldip Hills at the quest icon on the minimap. (Chat 2-1-4)
 * Talk to Gnormadium Avlafrim west of Rantz. (Chat 4-1). (At the gnome glider icon on the minimap).
 * Search each landing light, cut the gem, and put the cut gem back. If you crush a gem the gnome will sell you a new one for 500 coins.

Completing the favours
Quest complete!
 * Talk to Gnormadium Avlafrim. (Chat 4)
 * Talk to Rantz. (Chat 2)
 * Talk to Tindel Marchant. (Chat 2)
 * Talk to Wizard Cromperty in Ardougne. (Chat 4)
 * Take 5 pigeon cages (south of the north Ardougne bank) if needed.
 * Return to the fishing guild cave, stand in front of the sculpture and read the animate rock scroll.
 * Kill the level 93 Slagilith (weak to Pickaxes and Crush attacks).
 * Read the scroll again to free Petra.
 * Talk to Phantuwti Fanstuwi Farsight in Seers' Village. (Chat 4-4-2-2-2-1)
 * Climb to the roof of his house and use a hammer on the weather vane. Search it for 3 parts.
 * Use each part on an anvil while holding a bronze, iron, and steel bar.
 * Put each part back on the vane.
 * Talk to Phantuwti Fanstuwi Farsight. (Chat 4)
 * Talk to Arhein in Catherby. (Chat 4)
 * Talk to Captain Bleemadge on White Wolf Mountain. (Chat 2)
 * Talk to Sanfew in Taverley. (Chat 3)
 * Go to Hammerspike Stoutbeard in the Dwarven Mine. Talk to him twice, kill his gang members, then talk to him again.
 * Talk to Tassie Slipcast in Barbarian Village. She will give you clay. Spin it into a pot lid, then fire the pot lid in the pottery oven.
 * Talk to the Apothecary with the pot lid and a pot. (Chat 3)
 * Talk to Horvik, give him the breathing salts, herbal tincture, and 5 pigeon cages. You need to speak twice to him. (Chat 3)
 * Talk to Seth Groats at the Lumbridge chicken farm.
 * Talk to Johanhus in the HAM camp. (Chat 4)
 * Talk to Aggie in Draynor. (Chat 2)
 * Talk to Brian in Port Sarim. (Chat 3)
 * Talk to a Jungle forester. (Chat 1)
 * Talk to Yanni, wait for the dialogue to finish. (Chat 2)

Reward

 * Quest points
 * Two experience lamps giving 10,000 experience to any skill of your choice. Skill must be at least level 30.
 * A steel key ring
 * The ability to make Guthix rest tea
 * The ability to craft pot lids
 * Access to the gnome glider route to the Feldip Hills

Required for completing
Completion of One Small Favour is required for the following:
 * King's Ransom
 * Swan Song