motor mount bolt?
shock bolt?
just look around on your bike...you might be surprised!
shock bolt?
just look around on your bike...you might be surprised!
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Except for rear axle bolt ( too short thread), I don't see anything. He's in Rhode Island, plenty of industrial suppliers, if hardware stores or auto parts guys have nothing. The "castle" nut on rear axle could be used as gage- I think it's the same pitch.
O
overboostin
Guest
got a bolt that fits. Any tips on getting the damn thing off? I screwed the bolt in as far as I could and tried holding the crank from the other side but the whole assembly just spins with a ton of torque. It wont budge. You screw the bolt in so the pulley gets drawn out right?
.......You screw the bolt in so the pulley gets drawn out right?
You screw in bolt and it hits crank end and eventually pushes rotor off the taper on crank. It requires force, as you have discovered. try putting bike in gear 3 or 4, apply rear brake (friend would be helpful) and tighten your bolt. Me, I usually tap on end of bolt (just like hammering a nail) between twisting episodes- this will jar the rotor very slightly loose and then you can tighten bolt again and tap again, etc. Of course, an impact wrench would be easier.
You screw in bolt and it hits crank end and eventually pushes rotor off the taper on crank. It requires force, as you have discovered. try putting bike in gear 3 or 4, apply rear brake (friend would be helpful) and tighten your bolt. Me, I usually tap on end of bolt (just like hammering a nail) between twisting episodes- this will jar the rotor very slightly loose and then you can tighten bolt again and tap again, etc. Of course, an impact wrench would be easier.
if the bolt/threads isn't long enough you have to add a spacer between the bolt and the crank snout.
O
overboostin
Guest
Tried the brake and gear trick and it still spins.
O
overboostin
Guest
I tried holding the crank from the other side which worked for a bit but now that sides just spinning with it.
if you held it from the ignition side you will/have broke the timing advancer.
the bike in gear/hold brake never works.
your alt. rotor has a flat on it...use a large cresent wrench to hold the rotor from spinning.
the best thing to do is impact the alt. rotor pushing bolt..should pop right off.
O
overboostin
Guest
Incase I broke the timing advancer is the part interchangeable with an 83 850?
Negative vibes- if you broke it you know already!
I doubt you can get a good grip with open end wrench on rotor flats, but it's worth trying. Check with neighbors/friends and borrow an impact wrench/ compressor setup.
in this video he posted...
a 12" crescent wrench would hold the rotor very good.
also,
i believe the 83 850 is an electronic advance, not mechanical.
your 81 650 is a mechanical advancer to my knowledge.
if you used a lot of force on your advancer it is possible to twist the ears off that engage in the 19mm hex that you put your wrench on.
remove 12mm bolt in the middle and you will see if you damaged it.
O
overboostin
Guest
You guys are the best! Finally got it off with the crescent and grease trick. Thanks so much!
O
overboostin
Guest
I take it I broke the advancer? Is the 19mm part suppose to come off? Also I have a 79 850, would the advancer on that be compatible?
look at and compare the 79 advancer to the 650.
you may be in luck.
added
the ears are made to the advancer and it engages into the 19mm nut.
never rotate/hold the engine with the plugs in it using the 19mm or this can happen.
the ears just spin off the advancer when abused...very fragileee!
you may be in luck.
added
the ears are made to the advancer and it engages into the 19mm nut.
never rotate/hold the engine with the plugs in it using the 19mm or this can happen.
the ears just spin off the advancer when abused...very fragileee!
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O
overboostin
Guest
Awesome thank you!
O
overboostin
Guest
Pm sent Tom