Thread: '96 Hurricane Help!
07-23-2013, 08:41 PM #1
'96 Hurricane Help!
Hey all, I am working on a '96 700 Hurricane for a friend. He bought it off a guy that said he just put a new motor in it. It starts right up and will rev up, but if you put it in the water you can barely get above idle without it bogging out. The compression is good, 130 psi each hole, the reeds are good and the plugs look alright (i've seen way worse that ran great).
I suspect a fueling issue. I pulled the carbs off and went through them. They have ocean pro flame arresters on them. The carbs have 2.0 n/s, 70 pilots, and 155 mains and the low speed screws were like around 2 turns out. I have never worked on these so I don't know factory settings or anything. Also the spark plugs are ngk bpr8es.
So what should the jetting and n/s be for this motor with flame arresters? How many turns out should the low speed screw be? What spark plugs?
Anything else I should check?
07-24-2013, 06:42 AM #2
Check the pump and driveshaft
07-24-2013, 07:30 AM #3
Carburetor Type Keihin CDK II
Main Jet #155
Mid-Range Jet N/A
Slow Jet #70
High Speed Screw N/A
Low Speed Screw 5/8 turn
Idle Speed (In water) 1300-1400 RPM
Needle & Seat 20-24 PSI (70g spring) Valve Seat 1.6
07-24-2013, 07:49 AM #4
Your low jets are out way too far and based on what I've seen with my 'Cane I suspect about right would be 1/2 turn out once you get the arm heights adjusted. At 5/8 turn mine loads up pretty good at idle. The 2.0 needle & seat is correct for the 'Cane. If it has the grey tempo fuel lines and original fuel select switch you'll want to replace those as well.
See this for adjusting arm height: http://www.greenhulk.net/forums/show...=1#post1793016
Definitely check out the jet pump/driveshaft/engine alignment as well. My 'Cane destroyed the carrier support bearing and that part of the driveshaft before I got it. It still rode ok but every once in a while you'd feel an excessive/abnormal vibration. Good to verify that all is well and make sure you keep the support bearing well greased!
07-24-2013, 09:52 AM #5
The Ocean Pro F/A's are stock. The BPR8ES are correct.
07-24-2013, 12:07 PM #6
Awesome, thanks guys. Ill see if that fixes it.
07-26-2013, 08:53 PM #7
Update: I adjusted the n/s arm length per the diagram from "Throttleout". The ski will start up and rev out of water, but in water it will still just stay bogged down. When the ski is idling in the water it knocks and sometimes smoke will come out of the flame arresters. Also when i had the f/as off the underside of them was covered with gas/oil. That tells me the reeds are bad, but when i looked at them with a mirror they looked good. Any more ideas?
07-26-2013, 09:06 PM #8
You may have to pull the intake manifold and reed cages to verify that the reeds are indeed good or bad.
Where do you have the low speed screws set?
EDIT: This link gives some good information on the Polaris Domestic Engines too: http://polarispwcknowledge.shorturl....omestic-engine
07-27-2013, 07:59 AM #9
07-27-2013, 08:50 AM #10
I think at this point I'd pull and check the reeds. If you're getting smoke back out through the FA's something isn't right.
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