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BS38 Needle Plates coming loose
- muddytailgate
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MTG
1976 KZ 750b
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- Motor Head
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- FIX UP YOUR BIKE RIGHT AND CHEAP
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The plastic washer should stay put by spring pressure, this is its only retainer besides the adjustment clip. The only way I can see it pushing up like you say is to have shorter needles, lifting out of the jet. Then as the slide comes back down it pushes the needle up into the slide.
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
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- muddytailgate
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1976 KZ 750b
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- bountyhunter
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The BS-38 used two different types: the ones in mine use the metal clip which holds the plastic button from sliding down so it can't do that.muddytailgate wrote: Anybody have the problem with Needle Plates coming loose on carbs? The needle plates are the plastic button shaped dohickey that keeps jet needle in position, inside the slide and diaphragm, under spring. When I bought this '76 kz750, one of the carbs had the plate halfway up the slide. Last week (2 years after buying bike) the other one had come loose enough that needle came out of jet and rested beside jet. Looking for someone to commiserate with me and possibly suggest some sort of prevention. Thanks!
MTG
The other type (shown in the picture) might, I have not worked with those.
1979 KZ-750 Twin
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- bountyhunter
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Is the clip tight in the slot?
NOTE: the needle should not be moving up and down with respect to the slide body in operation, the spring should hold it all the way up. The "floating" needle assembly with spring is so the needle can move around and match the position of the jet as the float rises and falls. Needle should not be moving around in the slide.
1979 KZ-750 Twin
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- muddytailgate
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1976 KZ 750b
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