Cant Pull it off

07_Z570 · Post by **07_Z570** » Sat Dec 15, 2007 6:31 am

How Do you guys go about pulling the Flywheels off the 76-77 Liquifires? I cant Get any spark. So I'm Thinking I need to Pull this sucker to Touch it up with some Fine Grit Sand Paper..

07_Z570 · Post by **07_Z570** » Sun Dec 16, 2007 1:37 am

Well, I know theres No points. I know its CapacitorDischargeIgnition.... ^^.. There Obviously Rust on the Inside of the Flywheel..(kinda Happens when a Sled sits for awhile) Been there done that with Other Sleds. Just cant get the Flywheel off to Clean it up...

Post by **ICCSF 108** » Sun Dec 16, 2007 2:31 am

(I just know I'm going to get a rise on this one I can see it coming already) I would agree with Rich, I doubt if that is your problem, I think it would be more like a bad safety switch, ( Ign. switch, emergency kill switch, etc.) or a bad CDI box. Thats where I would ck first, by eliminating the easy/obvious things. Trust us unless this sled has been under water for a period of time I think you barking up the wrong tree.
But if you insist: I have to assume you somewhat know what you are doing & how to use a snowmobile flywheel puller, BUT then again if you've done this on other sleds I guess I don't understand why your having any trouble on a JD sled as ALL 2-stroke snowmobile flywheels come off the same way but some use different pullers?? (this is covered in the JD service text manual ) Your motor probably has a ring gear on the flywheel & if it does that might why you can't pull it (maybe the others you pulled didn't), like most sleds to pull the flywheel you will have to remove the recoil first, then the starter cup, then the water pump pulley & belt ( on Liquid cooled ones) , then the magneto/flywheel cover, ( on motors with flywheel ring gears) Then you shouldn't have any trouble..

Keep us posted

Kenny

07_Z570 · Post by **07_Z570** » Sun Dec 16, 2007 6:02 am

Yea, You guys Definetly Give enough Information.. I mean, I already tried the Unhooking the Kill switch/Key switch and the Connector on the Block. I've been through this before, Kinda why I'm not buying a new CDI Box, I know for a Fact what I'm looking at.

All the Other Flywheels I've pulled never gave me a problem. tap the crank shaft and slide the Flywheel off.. I Dont have a Puller, Guess I Gotta get one.. I wasnt Sure But you guys may have had a Trick to pop them Off.. (Besides Using a Puller)

You Guys getting any snow this weekend?

Nick

Post by **ICCSF 108** » Sun Dec 16, 2007 8:18 am

I guess we can't pull anything over on you, your too smart for this website...... By the way, you don't live close to Bob (Mr. Deere) do you, maybe you could help him with his project?? Hell with the combined experience & technical knowledge you guys have I'll bet that you guys could have him up & running in a matter of no time, & you wouldn't even need special tools or tech manuals....
Got 3 inches of snow in Kansas City & I guess maybe more on the way

Kenny

harleysportster · Post by **harleysportster** » Sun Dec 16, 2007 9:06 am

I bet you did not read the article in FAQ section on how to trouble shoot the cdi system. You will need a ohm to perform a few tests.
I'll help you out and post the link..
http://z12.invisionfree.com/jdsleds/index.php?showtopic=491

afponiky · Post by **afponiky** » Sun Dec 16, 2007 10:56 am

Hmmmmm, maybe related?

:blink:

GRP

deerefanatic · Post by **deerefanatic** » Sun Dec 16, 2007 11:10 am

yah, check your ohmage first....If you don't need to pull the flywheel, dont! It's sooooooooo easy to check this stuff.....

The magnets on the JD flywheels are NOT a standard flywheel magnet.... They are some sort of flexible plasticy magnet thing... (like what craft shops sell for making refrigerator magnets and stuff) so they don't rust........ Rusty flywheel is NOT your problem.. Trust me...........

I500 · Post by **I500** » Sun Dec 16, 2007 12:42 pm

07_Z570 wrote: Yea, You guys Definetly Give enough Information.. I mean, I already tried the Unhooking the Kill switch/Key switch and the Connector on the Block. I've been through this before, Kinda why I'm not buying a new CDI Box, I know for a Fact what I'm looking at.

off..All the Other Flywheels I've pulled never gave me a problem. tap the crank shaft and slide the Flywheel I Dont have a Puller, Guess I Gotta get one.. I wasnt Sure But you guys may have had a Trick to pop them Off.. (Besides Using a Puller)

You Guys getting any snow this weekend?

Nick

Guess i,ve ben doing this all wrong. Keep the puller in the cabinet and just use a hammer . Thanks for the advice

HoosierDeereMan · Post by **HoosierDeereMan** » Sun Dec 16, 2007 12:46 pm

I've gone through the no spark cenario 3 times on 3 different machines. I used an Ohm meter to eliminate everything but the CDI box. I swapped CDI boxes with a good one from another machine to verify it was the box. So far I'm 3 for 3 on CDI failures. I was able to pick up NOS Prestolite CDI boxes off of e-bay pretty reasonable. Only problem I had was all 3 had the round connection plugs and I had to cut and solder on my older style rectangular plug. I've never tried the HewTeck system, but several of the guys here have with pretty good success.

S_Kyle · Post by **S_Kyle** » Sun Dec 16, 2007 6:23 pm

Is there ayway to check if a CDI is dead besides swapping it with one that works?

07_Z570 · Post by **07_Z570** » Sun Dec 16, 2007 9:17 pm

Sheesh.. I was saying how I have done this before. I mean I dont work on sleds alot... Just once in while... Hammer on crank.. Well any body with common sense would figure that out... Yea.. What do you do when you dont got a puller? And buying one wont pay for it self because You dont pull these things off but maybe 2 a year.. and i dont work on old sleds usually mid- late 90's.. I wasnt Sure But there was a trick to get this thing off.

And i wont get into all of those posts.. Other than Saying.... I got a DMM and i know how to use it. If i Didnt know what i was Doing I Prob wouldve asked Why I cant Get Spark.. Sheesh.. and yea. when i said you guys give alot of info, I meant what i said. (I think.) For some kid who cant get a sled running, you guys would steer him in the right Direction..

Hmm Those Fly wheels Dont rust.. okay.. Well Im confident that my problem is behind that Flywheel. if its not Corrosion on the flywheel... Theres obviously something else in there that i cant See or test... Everything has tested good. Besides the Flywheel and what Sits behind it..

Well Tommarow, I'll go get a Puller. and see whats going on in there...

427cobra · Post by **427cobra** » Sun Dec 16, 2007 9:24 pm

Most auto stores have a free loan a tool program. you just give them a deposit and when you return the puller you get your money back....then your not out anything!

HoosierDeereMan · Post by **HoosierDeereMan** » Sun Dec 16, 2007 9:30 pm

Deere made a tester for these units. I think Rich had one for sale and may still have it. Unless you have one its impossible to my knowledge to determine if its good or bad. If you have followed the troubleshooting guide and eliminated everything else it has to be the CDI box. The book even states that if everything else has tested good to replace the CDI unit as there are to many variables with the box that could be fault. There is a nos CDI box for sale on e-bay for the Cyclone and Liquifire models right now.

harleysportster · Post by **harleysportster** » Sun Dec 16, 2007 9:31 pm

07_Z570 wrote: Sheesh.. I was saying how I have done this before. I mean I dont work on sleds alot... Just once in while... Hammer on crank.. Well any body with common sense would figure that out... Yea.. What do you do when you dont got a puller? And buying one wont pay for it self because You dont pull these things off but maybe 2 a year.. and i dont work on old sleds usually mid- late 90's.. I wasnt Sure But there was a trick to get this thing off.

And i wont get into all of those posts.. Other than Saying.... I got a DMM and i know how to use it. If i Didnt know what i was Doing I Prob wouldve asked Why I cant Get Spark.. Sheesh.. and yea. when i said you guys give alot of info, I meant what i said. (I think.) For some kid who cant get a sled running, you guys would steer him in the right Direction..

Hmm Those Fly wheels Dont rust.. okay.. Well Im confident that my problem is behind that Flywheel. if its not Corrosion on the flywheel... Theres obviously something else in there that i cant See or test... Everything has tested good. Besides the Flywheel and what Sits behind it..

Well Tommarow, I'll go get a Puller. and see whats going on in there...

If you tested everything as I outlined in the FAQ section and it checked out, there is no need to remove the flywheel. The only thing back there is the stator/ timing-ring and the magnets inbeded on the inside of the flywheel.