Stake it or Not??

[CamoKing]

I couldn't just stop at cleaning, new gaskets, and a few other replacement parts from a kit.  I had to tear the whole Hitachi DCR342 down to be thorough...including removal of the choke and lower butterfly plates.  This was a learning experience.  Wonderful!  I've learned the term: STAKING

 

After discovering that the screws were staked, I used a dremel to grind the ends and free them.  (And, render them useless)  Of course, that led me on a hunt for new screws which I found at Ace Hardware luckily.  Each plate had a pair of different length screws leading me to an arduous mini milling task that, after several frustrating hours, and several rejects, yielded 3 pairs of new screws.  I've reassembled these parts using some Permatex Red thread locker hoping that will suffice.

 

The question arises then as to whether or not I need to 'stake' these little suckers and, if so, how does a 'back yard' novice mechanic with limited tools accomplish such a thing ?

 

[datzenmike]

Best if they are soft brass and easily peened. I would use a permanent thread locker. Actually I wouldn't have removed them. 😄 The shaft would need to be supported so it doesn'r get bent while hammering on it. Hitachi probably uses a press. It's critical that the butterflies align and seal tightly when closed.

[CamoKing]

Well, I think the Permatex Red is permanent?  BUt, now I see the butterflies have are not closing tightly; small slivers of light coming through.  Back to the bench  ):

[Stoffregen Motorsports]

Yes, you need to adjust the butterflies before fully tightening the screws. You can use red loctite on them, and you should also peen around the tips with a center punch.