Home Made Timing mark pointer for a 717

[bbmaxster]

Greetings all, has anyone ever made a timing indicator pointer for a 717? I guess I'm too cheap to buy one ($ 83.00 ) from the Stealership. I need to check the timing on my ski which i recently put another engine in it. I also swapped the coils from another engine so I wanna check it before i burn it up or worse. I did aligh the marks on the coil plate but still wanna check it. Any words of wisdom?

 

[KeithH]

Yep you can download and print one from the net,, search for timing wheel , I cant remember where I found it but it wasnt that hard to find.. I am sure you know that the print out will only tell you the rotary timing you will nee a strobe light to do the electrial timinf from the flywheel,, good luck with the engine swap

 

[bbmaxster]

No,No,No Not the Degree Wheel

I'm not looking for the degree wheel used to set up the intake rotary valve but instead am looking for the bolt on index point which is used to check spark timing be it advanced or retarded. Unless you know of a trick where you can use the degree wheel while it is running at i believe around 3500 rpms ( i'll recheck the manual on that) to find out if the plugs are fireing at the prescribed time. I don't think i could read it at that speed.:thumbsup:

 

[Dr Honda]

Yes... you can set the marks, using a dial indicator. The piston depth is in the manual.

 

[bbmaxster]

However, as far as reading the degree wheel at prescribed rpm it suddenly occured to me (while sitting on the can:bigear that with a strobe light it would be readable...Duh! Therefore I will need the wheel after all in addition to the pointer . So thanks for that info KeithH in Ireland (land of me forefathers).

 

[bbmaxster]

Hi Doc Honda, are you saying make a device which can be bolted on to where the PTO guard normally attaches and use the dial indicator to find TDC and then mark a reference point on the device and on the PTO that corresponds to each other, then attach the degree wheel, zero it out to the mark on the PTO ( can that stay put while the engine is running?) and fire her up to the prescribed rpm and check the timing? ( Talk about run on sentences!)

 

[bbmaxster]

Hi Doc Honda, are you saying make a device which can be bolted on to where the PTO guard normally attaches and use the dial indicator to find TDC and then mark a reference point on the device and on the PTO that corresponds to each other, then attach the degree wheel, zero it out to the mark on the PTO ( can that stay put while the engine is running?) and fire her up to the prescribed rpm and check the timing? ( Talk about run on sentences!)

 

[Bills86e]

While proceeding, read up on checking the index. LOL

 

[bbmaxster]

I did that and that was my original question refrencing contructing a pointer,index mark or whatever you want to call it. LFA (looking for answers)

 

[bbmaxster]

Is there a timing or refrence mark anywhere on the mag end of the engine that would help me check for indicating wether or not the crank has twisted? I really don't suspect this at this point and am probally really getting anal on this thread but i don't want a hole in a piston as someone recently posted due to possible improper ign timing.

 

[Bills86e]

To check the timing, you can follow directions in the service manual for marking the PTO, setting the pointer, and using the timing light. To do so, you need a TDC dial indicator, a pointer that are both sold by Sea Doo.

 

[Bills86e]

I did that and that was my original question refrencing contructing a pointer,index mark or whatever you want to call it. LFA (looking for answers)

Seadoodave1 says: Your pto center is 2 1/8th inches back from centerline mounting points of the PTO cover. Dremel a 1/2" square in the plastic cover at the 12 o'clock position.

Gee....why ain't dat in da booc? LOL Now we need square corks?

Bills86e

 

[bbmaxster]

By the wording "PTO Center" is he referencing to a zero degree mark on the PTO itself? Or is he saying that this square will serve as a reference in itself. I'm not sure I follow this info throughly as how it pertains to checking the ign. timing. I'm sure there is nothing to it but i've never had the pleasure of doing it yet.

 

[bbmaxster]

To check the timing, you can follow directions in the service manual for marking the PTO, setting the pointer, and using the timing light. To do so, you need a TDC dial indicator, a pointer that are both sold by Sea Doo.

Roger that sir but that's been the jist of this whole thread, the making of a homemade pointer.

 

[Bills86e]

MacGyver somehow would've used a plastic gallon milk container.

Reading the Pictoralized Shop Manual, shows what the Seadoo pointer looks like, and how its used.

These are Jets..............Not ROCKETS!

 

[bbmaxster]

MacGyver somehow would've used a plastic gallon milk container.

Reading the Pictoralized Shop Manual, shows what the Seadoo pointer looks like, and how its used.

These are Jets..............Not ROCKETS!

Roger that again Sir and I do believe that the pics show a great deal although my intentions are to make a pointer and i was merely trying to get some insite as to making one myself.
Dr Honda kindly replied to one of my post and i responded with mine to clarify with him my plans but he never responded.Hopefully maybe someone else may have been down this road or should i say waterway before and could give me some tips. We are all here to learn and i realize that i'm a newbee and don't know all of the procedures...who does?
This is a great forum when used properly and all i wanted was through advice and not run arounds. I did try and search the threads to see if my question had been asked before but to no avail. That's why i posted.
I think people are trying tohelp but maybe they are not reading the complete thread so as not to miss anything.

 

[Bills86e]

How true. You could tape a piece of cardboard on cylinder above the PTO there to serve the purpose of a stabilezed mark, and making a reference mark on the rotating pto at TDC's to determine relevance of 180* apart. Pun not intended.

 

[bbmaxster]

How true. You could tape a piece of cardboard on cylinder above the PTO there to serve the purpose of a stabilezed mark, and making a reference mark on the rotating pto at TDC's to determine relevance of 180* apart. Pun not intended.

Well that was kind of my thinking. The main question was where to put the mark on the cardboard. My thinking was to bring the mag cyl up to TDC and check with a dial ind. for 0 degrees or TDC then mark two corresponding marks both on the PTO and on the cardboard or what ever i make it out of. then i would need to mark some how the few degrees either BTDC and ATDC to shoot with a strobe light to verify where the timing is @ the prescribed rpm. Does that sound feasable to you?

 

[Bills86e]

Yes. Let us know. Glad you reading the ink.

 

[bbmaxster]

Thanks









Thanks guys