09-17-2014, 03:43 PM #1
Spark Drive Shaft and Engine Alignment
I am looking for some pointers on getting the drive shaft on the spark and engine to line up. We pulled out an engine as well as the entire drive line (pump etc). Time to put it back in. Was planning on just following directions in the big shop manual and they are pretty detailed until you get to the install part. It takes you through all the steps until you get to the install and alignment part. It states align the shaft and engine...says if its out of alignment to do it again until in aligned. Makes it sound like once you put the tool on you just put the drive shaft tool through it and align everything best you can then tighten down the engine mounts. Seems pretty vague. Also the engine seems to be tilted back towards the back of the ski and the front raised by shims. I would assumer this is to match the angle of the shaft to the pto? do you just eyeball it with the shaft tool?
I know there is a tool out there that we are going to order that is supposed to help with this. Also the engine is shimmed in the ski, we saved them and you can mount the engine in the engine mounts pretty sloppy and move everything around 1/4 in each direction so that should help. Bottom line is..how do you know when its perfect. Can it be don't by hand? Is the tool much better and if so how much does it help?
Anybody else done this out there and have some pointers. Seems like there is some play in the drive shaft both forward and back. Almost "compressed" feeling when you have the entire assembly out. Does that have anything to do with it..as in giving you some "play" both forward and back?
09-17-2014, 04:22 PM #2
For reference these are the tools the shop manual suggests. If its true that I need all 3 of these bad boys...any idea on how to purchase easily. I am sure they are not cheap but will be needed.
09-17-2014, 04:47 PM #3
If you haven't adjusted/moved the bottom 1/2 circle cups it should settle in the same spot when dropped in. Pump cannot be adjusted as such, so I wouldn't worry there.
Engine sits in a 4 point cradle, so unless you messed with the bottom 1/2's or the engine mounts on the engine, I can't see how it would have moved.
Had my engine out in the turbo model, used no tool, maybe got lucky?
Not super helpful but maybe worth a discussion.
09-17-2014, 04:49 PM #4
thanks for the help. Unfortunately we took the entire thing apart including the engine mounts our and cooling rails off the bottom of the ski.
09-18-2014, 01:20 AM #5
- Join Date
- Jan 2014
If you have to use a alinement plate better use it .
The spark is set up like a hx .
there should be no freeplay in driveline !
I have blown a few drivelines in my hx before as it gets loose or should i say i needed to check them before they got loose!
09-18-2014, 01:28 AM #6
- Join Date
- Oct 2007
09-18-2014, 04:17 AM #7
09-18-2014, 06:58 AM #8
Interested in details also. I ordered the alignment plate so I can check it when I take delivery. So you guys are saying NO thrust movement? Typical with carbon seal is under 3/8"...
@xdrain - the problem is you might not see any runout on the indicator, but you could still have angular misalignment. Plus if you get movement on the motor it would show up. It's tough cause you don't have two shafts(or couplings) to align, just one and a PTO insert. Seadoo doesn't really give a tolerance, were just doing a "rough" alignment in the millwright world. Thats why the splines are rounded. My 2 cents.
Last edited by stuckmoto; 09-18-2014 at 08:02 AM.
09-18-2014, 07:55 AM #9
09-18-2014, 08:08 AM #10
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By prodaddy1200 in forum Polaris Open DiscussionReplies: 1Last Post: 07-05-2012, 11:05 PM
By need4pwr in forum Yamaha ClassifiedsReplies: 8Last Post: 07-31-2008, 11:56 AM
By BahamasGPR in forum Yamaha ClassifiedsReplies: 13Last Post: 06-04-2008, 04:34 PM
By JGringo in forum Polaris Open DiscussionReplies: 14Last Post: 08-18-2007, 12:47 AM
By WannabeGoing80 in forum 4-Tec PerformanceReplies: 0Last Post: 12-16-2006, 12:48 PM