04 Yamaha XLT 1200 Waverunner?

Question

Bought this waverunner from a guy and it will only run 35 mph top end. Dealer said either the carbs needed overhaul or the catalytic converter was bad but didn't know which (either way it was $1200 for the carbs or $1200 for the cat.). It started to clear out a little late last year and run a little faster (47 mph) so I was thinking carburetors. I decided to run some Seafoam through it and hopefully clean the carbs out. I took it out last week and received an alarm indicating "Exhaust".   Based on advise from others, I pulled and check the cat and found it had separated and was useless.  I replaced the cat with a "D" plate and the appropriate chip required.  I took the unit back to the lake and it still will only run around 40 mph.  This unit should pop up quick and get to at least 65-70 mph.  Anyone have any other suggestions before I opt to take it to the dealer?

Froidrik · Accepted Answer

I've done a lot of carb jobs on those 3 cyl. Yamahas. If your cat. failed, ask them to be sure to check the reeds, a lot of the time when it fails, it will burn the reeds from having too much back pressure at high temps. in the bottom end of the engine.

blackham · Answer

in the journey that your prepared to risk a dash, take it to a qualified marine mechanic for a mechanical inspection. expenditures approximately $one hundred, and it fairly is going to tell you precisely the difficulty is and what desires performed to repair it, and how the final condition is. they must additionally be waiting to propose you on a trustworthy cost for it. yet, definelt by no ability ever purchase and %or boat with out it working and in a position to do a trypersistent on the water, and you're able to do the mechanical inspection on any used %or boat to make valuable oyu arent being suckered into procuring junk.

JUST-IN-TIME · Answer

you might have a clog in the water box

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04 Yamaha XLT 1200 Waverunner?

3 Answers