EDIT: Flywheel COVER removal help

[SXIPro]

Ok, I am having major withdrawals because so many folks are at Daytona riding....I need to do something with my skis. I installed an MSD Enhancer in the RN today, and will be putting a new pole on it tomorrow.

I'd also like to pull the flywheels on the RN and the SN so I can send them to get lightened. I guess I need a harmonic balancer puller. If I pick one up, is this all I need? Will I need to pull the gas tanks?

Thanks!!

EDIT: Ok so I'll be picking up a harmonic balancer puller tomorrow. So, I figured I'd get a headstart and yank off the flywheel cover. Well....Removed all the bolts, and that puppy still ain't moving. I imagine perhaps there is some kind of 'form a gasket' in there?? I can see some kind of hardened gummy goop that squeezed out in one spot.

Do I just do some strategic prying with a screwdriver and hammer? Or is there something I am missing here?

Thanks

 

[yankeeboy]

Yamacrazed used a steering wheel puller (and a hammer) to get mine off for me. It was out of my ski when he did it.

 

[Boris]

You don't need to remove the fuel tank although it does help.

A cheap puller from an autoparts is all you need for the job.
Put some strain on the flywheel and tap it with a hammer.
Should pop right off.

 

[yamaha415]

harmonic balancer puller I got it at napa for $15 the part # is 775-3901. You'll need to buy 3 metric stainless bolts and 6 beefy washers 2 for each bolt. The bolts are M8 by 70 mm. Measure up 15 mm on each bolt and mark it off with electrical tape. This is as far as you'll want to run these bolts into the flywheel, otherwise you'll risk hitting the trigger on the stator plate. You can feed the peice of 3/8 clean rope down the front cylinder so as to not put torque across the whole crank just the front part of it, I have heard that they can twist. The head has to be on for this just rotate the crank counterclockwise until it is above the highest port, the exhaust port. Then feed about 6 or 8 inches into the cylinder with the flywheel cover off and rotate the crank via flywheel counter clock wise until it tops out on the rope that is in the cyl. Have both the plugs out when you do this it'll make it easier. Then spin off the 17 mm flywheel bolt. Install your puller on the flywheel with the 3 M8 by 70mm long only 15 mm or so. Then install the main puller bolt into the puller until it contacts the crank hand tight. Then look at the puller itself and make sure it looks pretty close to even all the way around the flywheel and adjust the M8 bolts accordingly. You can now take your socket wrench and sometimes a piece of metal bar that'll fit over your ratchet and spin the puller bolt tighter untill it pops off. I usually do it with the motor out but i can be done with it in without pulling the gas tank.

Good Luck

 

[SXIPro]

harmonic balancer puller I got it at napa for $15 the part # is 775-3901. You'll need to buy 3 metric stainless bolts and 6 beefy washers 2 for each bolt. The bolts are M8 by 70 mm. Measure up 15 mm on each bolt and mark it off with electrical tape. This is as far as you'll want to run these bolts into the flywheel, otherwise you'll risk hitting the trigger on the stator plate. You can feed the peice of 3/8 clean rope down the front cylinder so as to not put torque across the whole crank just the front part of it, I have heard that they can twist. The head has to be on for this just rotate the crank counterclockwise until it is above the highest port, the exhaust port. Then feed about 6 or 8 inches into the cylinder with the flywheel cover off and rotate the crank via flywheel counter clock wise until it tops out on the rope that is in the cyl. Have both the plugs out when you do this it'll make it easier. Then spin off the 17 mm flywheel bolt. Install your puller on the flywheel with the 3 M8 by 70mm long only 15 mm or so. Then install the main puller bolt into the puller until it contacts the crank hand tight. Then look at the puller itself and make sure it looks pretty close to even all the way around the flywheel and adjust the M8 bolts accordingly. You can now take your socket wrench and sometimes a piece of metal bar that'll fit over your ratchet and spin the puller bolt tighter untill it pops off. I usually do it with the motor out but i can be done with it in without pulling the gas tank.

Good Luck

Thanks very much for taking the time to spell this out for me. It'll definitley save me some time and a headache.

Much appreciated :Banane01:

Thanks to the other guys who chimed in as well. :fing02:

 

[showmepro1200]

harmonic balancer puller I got it at napa for $15 the part # is 775-3901. You'll need to buy 3 metric stainless bolts and 6 beefy washers 2 for each bolt. The bolts are M8 by 70 mm. Measure up 15 mm on each bolt and mark it off with electrical tape. This is as far as you'll want to run these bolts into the flywheel, otherwise you'll risk hitting the trigger on the stator plate. You can feed the peice of 3/8 clean rope down the front cylinder so as to not put torque across the whole crank just the front part of it, I have heard that they can twist. The head has to be on for this just rotate the crank counterclockwise until it is above the highest port, the exhaust port. Then feed about 6 or 8 inches into the cylinder with the flywheel cover off and rotate the crank via flywheel counter clock wise until it tops out on the rope that is in the cyl. Have both the plugs out when you do this it'll make it easier. Then spin off the 17 mm flywheel bolt. Install your puller on the flywheel with the 3 M8 by 70mm long only 15 mm or so. Then install the main puller bolt into the puller until it contacts the crank hand tight. Then look at the puller itself and make sure it looks pretty close to even all the way around the flywheel and adjust the M8 bolts accordingly. You can now take your socket wrench and sometimes a piece of metal bar that'll fit over your ratchet and spin the puller bolt tighter untill it pops off. I usually do it with the motor out but i can be done with it in without pulling the gas tank.

Good Luck

LIke Boris said, use the hammer to give the center pull bolt a sharp rap and the flywheel will pop off well before you have to pull it till it just pops off on its own. Works like a charm and you don't have to put quite as much stress on the flywheel.

 

[Mouthfulloflake]

It always scares the bejeebus out of me when it pops off.

and ive better luck using an impact wrench to tighten the puller, VS trying to hold the engine from rotating.

use caution though, dont over tighten it!

as said above, get some tension on it, and tap it, more tension more tap.
then tap the crap out of it, and it will usually shoot off.

 

[XFT LOU]

harmonic balancer puller I got it at napa for $15 the part # is 775-3901. You'll need to buy 3 metric stainless bolts and 6 beefy washers 2 for each bolt. The bolts are M8 by 70 mm. Measure up 15 mm on each bolt and mark it off with electrical tape. This is as far as you'll want to run these bolts into the flywheel, otherwise you'll risk hitting the trigger on the stator plate. You can feed the peice of 3/8 clean rope down the front cylinder so as to not put torque across the whole crank just the front part of it, I have heard that they can twist. The head has to be on for this just rotate the crank counterclockwise until it is above the highest port, the exhaust port. Then feed about 6 or 8 inches into the cylinder with the flywheel cover off and rotate the crank via flywheel counter clock wise until it tops out on the rope that is in the cyl. Have both the plugs out when you do this it'll make it easier. Then spin off the 17 mm flywheel bolt. Install your puller on the flywheel with the 3 M8 by 70mm long only 15 mm or so. Then install the main puller bolt into the puller until it contacts the crank hand tight. Then look at the puller itself and make sure it looks pretty close to even all the way around the flywheel and adjust the M8 bolts accordingly. You can now take your socket wrench and sometimes a piece of metal bar that'll fit over your ratchet and spin the puller bolt tighter untill it pops off. I usually do it with the motor out but i can be done with it in without pulling the gas tank.

Good Luck

Do you write instructions following the phrase "some assembly required" !

 

[D-Roc]

i also use the impact wrench till it pops off. no rope needed.

 

[oxnard111]

x3 on impact. works like a charm.

 

[sflsurfrider]

if im pulling a f/w w/o removing the engine, i remove the tank, use a HB puller along with OEM yamaha case bolts. i also use an air impact wrench to drive the center of the puller.

pullers usually come with a couple different 'ends' for the center bolt. take a little time to find the applicable end. grind it down, if necessary, to ensure that it doesnt get pressed into the front of the f/w accidentally.

 

[Mouthfulloflake]

good catch!

I forgot, the cheap Harmonic balancer puller I use, came with a swivel or pointy tip, and it DID hold the flywheel on, it didnt fit THRU the hole.

I had forgotten about that!

I torqued the shiat out of it, and beat the living daylights out of it, and it wouldn't budge.

I let it sit over night, and noticed the next morning, that the puller was pressing the flywheel on.

I sold that crank to Ketsair.

if im pulling a f/w w/o removing the engine, i remove the tank, use a HB puller along with OEM yamaha case bolts. i also use an air impact wrench to drive the center of the puller.

pullers usually come with a couple different 'ends' for the center bolt. take a little time to find the applicable end. grind it down, if necessary, to ensure that it doesnt get pressed into the front of the f/w accidentally.

 

[DrewNJ]

If I remember right when I did mine I put a 1/4" size (1/4" drive) socket on the end of the crank. It fits inside the flywheel and sticks out enough to get the puller on.

Also, since I'm scared of hammers I just put a real good amount of tension on the puller right before I go to bed. Next morning when I wake up I find the flywheel in the bottom of the hull.

I used an impact on the front nut to remove it but used the rope in the cylinder trick to put the bolt back on so I could torque the crank/flywheel bolt properly.
Good Luck
Doug

 

[SXIPro]

bump for flywheel cover help now :grumble:

 

[Mouthfulloflake]

there should be a place to place a large screwdrvier or prybar and pry it off?

directly across and opposite of where the stator wire grommet is, above that bolt hole is a pry slot.

 

[SXIPro]

there should be a place to place a large screwdrvier or prybar and pry it off?

directly across and opposite of where the stator wire grommet is, above that bolt hole is a pry slot.

Sweet. That did the trick. Thanks!!