Search results

Probably worried about the Carbon Seal overheating, but the Hose Water can't reach the Carbon Seal as the Water can only come thru the Pump Inlet?

SBT lowers the Compression by machining the Cylinder Head Domes bigger/deeper so that the Engines last thru the Warranty Period at the expense of Performance. For Combustion to occur, a Compression minimum must be met. I've read about 90 psi is the bare minimum. Could swap in a known good...

Probably to pass stricter Emissions Standards...

Si-Doo Made in Mexico :p

Dale's Jet Sports

It's a Mikuni Miracle! Are the Power Valve Blades clean and the PV Bellows in good shape? 6000 avg. rpm...Is this an SBT Engine? Youz gets wat you pay for...

Is Jetski Junk out of New Zealand? They charged you $125NZD or $80 USD per Fake Kit? Can get Authentic Genuine Kits for $50 USD each at Blowsion plus the Postage... Blowsion. Mikuni Carburetor Rebuild Kit Super BN MIKUNI CARB KIT FOR 38/40 I SBN [MK-BN38/44SPR] - $49.99

That's not a Genuine Mikuni Diaphragm. Cheap knock-off. Not saving any money buying cheap kits. Bite the bullet and do it right once. Buy the Genuine Mikuni Kits and the Carbs will work right. The Mikuni's have a Red Anodized Center Button.

That's one way of draining the Fuel Tank....o_O

Basically you want the Carburetors to rise up first, so they don't ingest Water... If no Sticker, use a Sharpie to mark the Transom Side that needs to go up first.

ALWAYS USE GENUINE AUTHENTIC MADE IN JAPAN MIKUNI SBN KITS. ONLY USE GENUINE AUTHENTIC MADE IN JAPAN MIKUNI SBN KITS. ONLY USE GENUINE AUTHENTIC MADE IN JAPAN MIKUNI SBN NEEDLE VALVE KITS.

If you have the Pin Remover Tool, should be able to remove the Wires from the Plugs, then thread them thru the Grommets. Keep track of what goes where. Maybe remove one Plug at a time and label everything. Zip tie together...

Inspect and clean the Power Valves.

Did you follow the proper cross-torquing Procedure and two-stage Torque sequence as specified in the Service Manual? To what Torque did you set the Nuts on each Torque Stage? Were the Studs completely screwed all the way into the Crankcase and snug before installing the Cylinder Head?

If not a Lubrication issue... Possible Hint from Full Bore that might explain why the Rotary Valve Gear gets damaged: "When rebuilding the top end of a Sea-D00 580,650,720 or 800 the cylinders need to be aligned properly. After sliding the cylinders into place install the cylinder bolts...

Definitely a Saltwater Casualty. Not mine. I don't treat my Skis that way. Just some examples of some mistreated and neglected Carbs to make my point.

Yeah, must have been a cheap knock-off Needle Valve because those Carbs look clean and corrosion free, unlike this one...

Did you take out the Steering Nozzle? 'cause it's missing. Seems like normal Pump Rattle to me, but not sure. There's a Kit for that: OSD Sea Doo DELUXE Antirattle Cone Kit for 140mm Pumps [OSD2302] - $36.99

Wow, so what was making it stick so bad? A swollen O-Ring? Corrosion?