now, the hardest part ive found with these is lack of information as they are older. being mine is a 88, the second year made, i can understand that. BUT, theres still info if you have the time to look. thankfully for you, ive compiled it here.
First off, a upgrade list from atlantic jet sports. they have the upgraded reeds, props and even TDR waterboxes (which i want!)
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WaveRunner, Jet Ski, Personal Watercraft Parts & Accessories for Yamaha WaveRunner, Kawasaki Jet Ski, Sea Doo, Polaris, Tiger Shark & Wet Jet Watercraft.[search]=waverunner+500&s[title]=Y&s[short_desc]=Y&s[full_desc]=Y&s[sku]=Y&s[match]=all&s[cid]=0
second is pro-tec. they still offer a list of things for the wR/WJ500's. heres a copy of the email i was sent. prices may change but they do have parts and services.
Solas Impellers $203.87
Skat Trak Impellers $218.40
Boyesen Reeds $64.95
Pro-Tec flame arrestor adapter $24.95
Pro-Tec flame arrestor $44.95
Flame arrestor pre filter $15.95
Carb primer kit $29.95
Adjustable rev-limiter modification $110.00
Cylinder porting $450.00
Cylinder head modification $100.00
Lighten flywheel $85.00
Taperbore carburetor $120.00
they can be called at (951)698-8988
I found out that Goki makes a high torque starter. also thats a SBN carb from a 650 helps tuning and power curve.
on a stock motor, you want the 13/18 pitch, on a built motor you want a 14/19 pitch.
you can:
1. MILLED HEAD .030
increased acceleration
2. AFTERMARKET REEDS
increased take off and midrange
3. 38 MM SBN CARB
easier to find parts, easy to tune, only a high and a low screw
4.PORTING ON ENGINE
this is a converted boat motor,you can have the restrictions removed ,in the exhaust as well, really wakes it up
5.PRO-TEC PIPE
the only pipe for this boat , they are a rare find,but worth it,replaces exhaust cover on engine
6 SOLAS PROP
remove stock 16 pitch alluminum with stainless dual pitch ,faster top and bottom, stay with the lowest solas pitch....
7.JET-DYNAMICS INTAKE GRATE
this is the best grate to stop that cavatating, scrubs off a little speed but well worth it in the chop
8. PROTEC LONGER RIDE PLATE
this is a must have ,when riding 2 up to stop that bow lift,also helps handling
9. SHIM IMPELLER
this is an axial flow pump. add or remove shims under the impeller to get the clearance as close to the sides as possible for good thrust
AND! K&N makes a flame arrestor and mount. part numbers 59-2042RK and 85-9329. (you need both)
weisco also makes piston kits, part number WK1037.
thats most of the info i have so far. OH, and i found CDI pinouts for you to test yours to see if its broken or not!
i have found a company that makes an aftermarket CDI for the Waverunner 500. Its called HPI (not the RC company). Part number CD4502
Also, i am buying a friends wavejammer 500 from him for $150. has a solas YA1750 prop thats brand new, and ill just end up selling the hull with a stock prop for the same $.
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