If you're out hunting for specific yamaha ls 2000 parts, you probably already know that these twin-engine jet boats are some of the most fun you can have on the water. They're fast, agile, and have a bit of a cult following for a reason. However, as these boats get older, keeping them running like they're fresh off the showroom floor requires a bit more effort and some savvy sourcing. Whether you're looking to fix a cavitation issue or just doing some routine engine work, knowing what to look for makes a world of difference.
Understanding the Twin Engine Setup
The heart of the LS 2000 is its dual 1200cc three-cylinder engines. Because there are two of everything, your shopping list for yamaha ls 2000 parts usually comes in pairs. One thing that makes life easier for owners is that these engines—the 155hp 1200cc powerplants—were also used in several Yamaha WaveRunners, like the GP1200. This is great news because it means engine internals are relatively easy to find.
If one of your engines starts acting up, the first thing most people check are the spark plugs and the carburetors. These boats use Mikuni carbs, and they can be finicky if they sit with old fuel. When looking for rebuild kits, don't skimp on the cheap off-brand stuff. Stick to genuine Mikuni components if you can find them. It'll save you the headache of having to pull the carbs back off two weeks later because a cheap needle and seat decided to fail.
Dealing with the Jet Pump and Propulsion
One of the most common complaints with older jet boats is a loss of "hole shot" or a feeling like the engine is revving but the boat isn't moving. This is almost always related to the jet pump. When searching for yamaha ls 2000 parts for the propulsion system, you're likely looking at wear rings and impellers.
The wear ring is a plastic or stainless steel sleeve that surrounds the impeller. Over time, rocks or sand get sucked up and score the ring, increasing the gap between it and the impeller blades. Once that gap gets too wide, you lose thrust. Replacing the wear ring isn't the most fun job in the world, but it's one of the most cost-effective ways to bring the "snap" back to your boat's performance. While you're in there, check the impeller for nicks or bends. A stainless steel aftermarket impeller can actually give you a nice little boost in top-end speed if yours is currently chewed up.
The Fuel System and Oil Injection Debate
If you hang out on any Yamaha boat forums, you'll eventually run into the big debate: to keep the oil injection or go to premix? Many owners looking for yamaha ls 2000 parts for their fuel system end up buying block-off kits. The original oil injection system is actually quite reliable, but if a line cracks or a pump fails, you lose an engine instantly.
If you decide to keep the stock setup, make sure you replace those tiny 1/8th-inch oil lines every few years. They get brittle with age. If you're more of a "better safe than sorry" person, converting to premix (where you mix the oil directly into the gas tank) is a popular move. Just keep in mind that if you go premix, you'll need to adjust your carb settings slightly because the fuel-to-air ratio changes.
Interior and Cosmetic Components
Let's be honest: Yamaha's vinyl from the late 90s and early 2000s wasn't exactly bulletproof. Finding original yamaha ls 2000 parts for the interior—like seat cushions or the engine hatch cover—is getting harder every year. Most owners end up going to a local upholstery shop to have the seats recovered.
However, there are still plenty of small cosmetic bits you can find. Things like the "Yamaha" emblems, cupholders, and deck traction mats are still widely available. If your floor mats are looking crusty or peeling up, switching to a custom-cut foam decking (like SeaDek or Hydro-Turf) is a massive upgrade. It makes the boat look ten years newer and is way more comfortable on your feet when you're hopping in and out of the water all day.
Cables and Steering
If your steering feels stiff or your throttles are hard to move, don't just muscle through it. You're likely looking at corroded cables. Steering cables for the LS 2000 are specific lengths, so when you're searching for these yamaha ls 2000 parts, make sure you match the part numbers exactly.
Replacing a steering cable is a bit of a "snake-charmer" job—you'll be reaching into tight spaces and pulling the old cable through the hull—but it's one of those repairs that makes the boat feel brand new again. There's nothing worse than trying to dock a twin-engine boat when the steering is sticking.
Where to Source Your Parts
When you're ready to buy, you usually have three main paths.
- OEM (Original Equipment Manufacturer): These are genuine Yamaha parts. They fit perfectly every time, but they're the most expensive. Places like Yamaha Sports Plaza or Partzilla are go-to spots for these.
- Aftermarket: Companies like SBT (Short Block Technologies) or Riva Racing specialize in PWC and jet boat components. They're often cheaper than OEM and sometimes even improve upon the original design.
- The Used Market: For things like engine blocks, pump housings, or discontinued trim pieces, eBay and Facebook groups are your best friends. There's a huge community of LS 2000 owners who swap parts and advice constantly.
Electrical Systems and Cooling
The LS 2000 uses a fairly simple electrical system, but because it's a marine environment, corrosion is your enemy. If you're having starting issues, check your battery cables and the starter relay first. If you need to replace a starter, it's one of the few yamaha ls 2000 parts where I'd strongly recommend going with a high-quality unit. The cheap $50 starters on some sites often don't have the torque to turn over a high-compression 1200cc engine for very long.
On the cooling side, these boats are "open loop," meaning they suck in the water they're floating in to cool the engines. If you ride in salt water, you have to be religious about flushing the engines. If you don't, salt buildup will eventually clog the cooling jackets. If you're noticing one engine running hotter than the other, check the "pisser" (the little water outlet on the side of the hull). If it's not shooting a steady stream, you might have a clog in the lines or a worn-out cooling hose.
Final Thoughts on Maintenance
Owning a boat like this is a labor of love. It's not just about buying the right yamaha ls 2000 parts when things break; it's about the preventative stuff that keeps you from getting stranded. Every spring, I'd suggest checking your spark plugs, grease your intermediate bearings, and check your flame arrestors for any debris.
These boats were built to be used and abused, and honestly, they handle it pretty well. As long as you stay on top of the fuel system and don't let them sit for years without being run, an LS 2000 will provide plenty of summer memories for your family. Just remember to carry a spare set of spark plugs and a basic tool kit on board—it's just good boat karma. Happy boating!