Today I was changing the front diff oil and tightened the bolt too much. Is there anything I can do myself or do I have to carry it the dealer??

 

Removed my plug yesterday and it had been stripped. Just a few threads left and can only tighten to 8ft/lbs.

Need to figure out what size it is and order a thread repair kit -- helicore? I think was the name. Next option would be to just buy a tap one size larger and make my own threads.


any help?

 

i did the same thing on my bruin a few years ago. i just bought a bolt that was the same size just a little bit longer to reach the unhurt threads. it worked like a charm. any auto parts store should have one

 

If it was the bolt that is striped,just call a Yamaha dealer..you might luck out and they may havr one in stock,If it was the threads on the diff,you may need to tap new threads one size larger..

 

The problem is that Yamaha and most Manufacturers use Aluminum casings with STEEL bolts... Steel and AL don't get along.... I have an 07 Grizz 450 and I took the belt cover off a few weeks ago - just to check it out, well most of the bolts came out fine, they SHOULD have gone back in with just my fingers.. not the case... I wound up putting anti-seize compound on ALL the Bolts.

It frustrates me that manufactures DO NOT USE Heli-coils (Steel thread insert) when making a Aluminum part that will use screws/bolts that are removed more than once..

I am tempted to take out my Diff plugs and put anti-seize on them...

As far as tightening too tight.. well a torque wrench is cheap insurance against doing that again... I have learned from my past mistakes.. so now I ALWAYS use a torque wrench when tightening into Aluminum casings.