Find someone to help you repair your ship

"You're missing a critical ship component. There may be mechanical parts in the waterworks area."

- Mission description

Find someone to help you repair your ship is a mission in Ratchet & Clank. After Ratchet and Clank crash land Mr. Micron's ship in the Tobruk Crater on Novalis, they had to look for parts to repair it with. The two visited the waterworks by their ship to find the Plumber.

This mission can be completed before or after "Defend the planet" here, though both must be completed to have access to a ship and leave the planet.

Walkthrough
When you first arrive, break the Raritanium on the ground in front of you to obtain Raritanium, used to purchase specific weapon upgrades. When you use the vendor, press to enter the Upgrades menu. This will lead to a tutorial in which you must upgrade the "Tutorializer". As instructed, select it, then use the stick down to select an available icon, and select it. Move the stick to adjacent icons and select the final icon. This will unlock them all, and reveal the mystery upgrade in the center between them. After this, you return to the upgrade screen. However, first exit this screen with. You will find two weapons available: the Pyrocitor for 2,000 bolts, and the Proton Drum for 4,000 bolts. Both are useful on this planet, though the Pyrocitor is more affordable. Purchase the Pyrocitor, then return to the Raritanium upgrades screen. Upgrading any of these weapons is essential, though upgrading the Combuster's rate of fire, the Fusion Grenade's area of effect, or Pyrocitor's stream width, are the best upgrades at this stage. You should also refill your ammo.

(Note: Those with the pre-order bonus will be able to purchase the Bouncer, for 100 bolts. This is the most powerful weapon in the game at this stage, and should absolutely be purchased now.)

It is likely during the next mission that one of your weapons may also upgrade automatically from level 1 to 2. Each weapon upgrades with use, up to a maximum of level 5, at which point the weapon reaches a final form. Using one weapon at a time is an effective weapon to upgrade each one in combat. However, if you do this, ensure that you still swap out the weapon for another when not strategically viable, such as if it is weak against a certain set of enemies in an area you cannot complete.

From where your ship crashed, instead of taking the elevator down for the mission "Defend the planet", head to the right through a tunnel leading to a large passageway with water quickly flowing in your direction. This forces you to jump across rocks and hydraulic platforms. At the end through a doorway, you encounter peckbots, small enemies that only attack in melee range. Defeat them with any weapon, then you will reach a jump slot. This is two glowing walls right next to each other that you can wall jump across. To do this, jump towards on wall, and Ratchet will latch onto it, then jump again for Ratchet to jump to the next. Rather than stopping when you see the doorway, instead keep wall jumping to the top. This will reveal an area with a holocard set. Grab it and then return, and wall jump again, this time reaching the doorway with ammo crates in front of it, to enter to the next room.

In this room, you will find blarg troopers across a gap of water. Cross the water and defeat them, then take the hydraulic platform up to a larger room. This room contains two gaps of water in between on the floor, in a room with blarg troopers and another new enemy, the birdbot, which fires ranged bombs at you. Shoot the blarg troopers, then jump across the first gap to the middle area and turn the bolt crank here to activate the hydraulics platforms on the end of the room. Once activated, shoot any remaining birdbots and blarg troopers then jump across to the next area. Climb the hydraulics to reach a thin walkway near the ceiling. Follow it to the final room, where you will find the Plumber. During the cutscene, the Plumber will give you an infobot with coordinates to Aleero City on Kerwan. After this, follow the Plumber to slide down the sewer pipe and return to your ship.

If you have already completed "Defend the planet", the Plumber will repair your ship. If not, complete "Defend the planet" and your ship will be repaired, allowing you to travel to Kerwan and other planets.