Seadoo GTX and SP Oil Block Off (Again!!)

88-ranger · 09-02-2010, 04:35 PM

First, I wanted to say hi! I'm new to the jetski scene. Got a decent deal (I hope) on a pair of oldie Ski's and a ghetto trailer. Im trying to make them as reliable as possible.....

Soo after reading the forums and reading the forums and reading the forums and reading the 'instructions' I have yet to find a conclusive answer to my question. I have already deleted the oil tanks, and looped the bottom end oiling hoses with a "T" connector. The other lines are capped. I have removed the bolts holding the oil pump on the sp, but it rotates on the shaft. I havent touched the oil pump on the GTX.

I re-read the instructions, and I need to remove the rotary valve cover. When I remove the rotary valve cover will that mess up my timing? Do I have to pull the engine to get the rotary valve cover off?

This is where I found the instructions.
shopsbt.com/forum/showthread.php?t=15142

But according to the shop manual, I need to pull the engine to service the rotary valve.

The SP is dumping wayy too much oil and fouling the plugs. And the Injection stopped working on the GTX. I am going to premix to make them simpler to run. Period. I know the pros and cons of doing so, and I dont care. I want to know 110% that I am in charge of my oil entering the engine.

I have already replaced the fuel and fuel lines, selector valve, and rebuilt all the carbs, changed the pump oil and installed new batteries too. Compression is good, and they do move nicely on their own....35mph is plenty fast for me.

One is an 89 SP with a single BN carb and 580cc engine.
Two is a 94 GTX with dual Super BN Carbs and 650cc engine.

If you look at my pic, the SP is obvious, but the GTX has been painted in someone's backyard....whatever, I just want 2 jetskis to ride and not care about. I love the trailer too, it was a boat trailer but I modded it with 2x10's to haul both skis....it pulls Great! and is super easy to dump em in the water....oh, and my total investment in the pic is $200 for sp and trailer, $300 for GTX, $200 so far in parts.....Minivan was free....17,000 miles ago

jerrspud · 09-02-2010, 04:56 PM

it's a 90 SP (89 is gray hood). look at the last of your HID (VIN) for the year.

is your questions on if you can pull the RV cover while the motor is in the boat? yes

88-ranger · 09-02-2010, 05:37 PM

Thank you Sir! You are a Gentleman and a scholar!

What about the timing? I do not have a degree wheel, and am paranoid about having to muck with it.

Another question, where is the serial number normally located? When I went to register it, they couldn't find one, so the lady said there was none on my paperwork....I love how easy it is to register in Wisconsin

jerrspud · 09-02-2010, 05:52 PM

HID tag should be on rear of boat on right side.

I have a link to a free degree wheel in my FAQs. You need a mirror to time in in the boat. I timed my 90 with the free one and a mirror just fine. If you pull the cover off, the RV should stay on just fine.