Yamaha 1100 waverunner

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See page 46 of the attached PDF manual (page 2-19) What you are actually seeing is "EXHST" which indicates the exhaust temp is too high. http://www.yamaha-motor.com/assets/service/manuals/2001/lit-18626-04-01_360.pdf

run on hose adapter and check engine is cooling by feeling the engine and exhaust system ! if ok then check intake water pipe is clear ! 2 or 4stroke?

https://www.jetdrift.com/yamaha-waverunner-3-650-review/

Gas oil mix 50-1

Did you get any instructions from the previous owner? If it's a 4 stroke waverunner there will be a dipstick on the engine block, but I'm guessing it's probably a 2 stroke engine because most watercraft used 2 stroke motors clear through the 1990's. The oil will be mixed with the gasoline when you fill it, bottles of 2 stroke oil can be purchased at most stores that carry oil. Your waverunner can be mixed at 50:1, which equals out to be 2.6 oz of oil per gallon of gasoline. On a 2 stroke engine the engine gets lubrication from the oil mixed with fuel and will burn up fast if straight gasoline is used. Let me know if you have any troubles, but try to get ahold of the previous owner to get some more info.
Daniel

Sounds like your vent tube from gas tank is blocked causing fuel starvation. if its a 96WVT then rite under the seat by the latch are 2 tubes sticking out with a piece of hose to hold it in place, make sure they hav'nt slid down

http://www.yamahapartshouse.net

Check out the exploded diagrams they have and see if that helps.

http://www.boats.net/parts/search/Yamaha/WaveRunner/1996/RA1100U%20WAVE%20RAIDER%201100/parts.html

How do I reset the code on dash board 99 yamaha waverunner 800?

I have a Yamaha fx 1100 that starts real slowly the battery is fully charged but the bike sounds like its not got alot of power going to the starter can anyone help solve this also battery terminals are clean and not corroded