FZR 600 carbs please help!
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FZR 600 carbs please help!
hello everyone i am new to the forum and this is my first thread. ok so i just got a 93 fzr 600 its my first street bike. i love it and it has been a great learning process. okay so i need to clean the carbs on the bike, but the problem is that there are a few screws on the carb bowls that are stripped so i cant get the bowls off.. :/ any one got any tips on how to get the screws out? thanks!
- willandrip
- Level 7.0
- Posts: 704
- Joined: Fri Sep 07, 2012 11:51 am
- Location: TYNE AND WEAR -UNITED KINGDOM
Re: FZR 600 carbs please help!
Float bowl screws are notorious for this; or rather some past owners are.
They are NOT Philips screw X heads but rather a system called JIS.
The Philips fits but not extremely well.
If you grind the very tip of a Philips down 2mm , then it fits much better/ enough to get you out of this anyway.
A dab of valve grinding paste on the tip helps the screwdriver to bite also.
Use a manual impact driver very carefully.
Totally goosed heads require a slot cutting with a dremel or the heads drilled off totally if inaccessible.
Most replace the full set with stainless cap screws.
They are NOT Philips screw X heads but rather a system called JIS.
The Philips fits but not extremely well.
If you grind the very tip of a Philips down 2mm , then it fits much better/ enough to get you out of this anyway.
A dab of valve grinding paste on the tip helps the screwdriver to bite also.
Use a manual impact driver very carefully.
Totally goosed heads require a slot cutting with a dremel or the heads drilled off totally if inaccessible.
Most replace the full set with stainless cap screws.
Sent from my keyboard using the English language not some teen text shite from a fooking phone.
Re: FZR 600 carbs please help!
Be EXTREMELY careful when using steel cap screws / Allen screws. There is a reason the bowl screws are so soft, and that is so they act as 'fuses'; if too much torque is applied to the screw head, it strips out, leaving the fragile (and expensive) carb threads intact. Over-torque a steel Allen screw, and you'll be holding the torn-out threads from your carb body and wondering what to do next.willandrip wrote:Most replace the full set with stainless cap screws.

1989 3LN1 FZR250R, currently stock.
TTR Ignition Systems
TCI Repair and Ignition Transistor Upgrade
VRR Adaptor Harness
YZF600 TCI Adaptor
Running Light Fuse Carrier
TTR Ignition Systems
TCI Repair and Ignition Transistor Upgrade
VRR Adaptor Harness
YZF600 TCI Adaptor
Running Light Fuse Carrier
- willandrip
- Level 7.0
- Posts: 704
- Joined: Fri Sep 07, 2012 11:51 am
- Location: TYNE AND WEAR -UNITED KINGDOM
Re: FZR 600 carbs please help!
If you strip the float bowl threads by overtightening the cap screws you will already have sheared off the brass nuts that retain the jet blocks and also made total shite of the brass jets and the carbs will be now virtually scrap anyhow.
The reason the screw heads in the bowls get made a mess of to start with is because few use the correct screwdriver.
The reason the screw heads in the bowls get made a mess of to start with is because few use the correct screwdriver.

Sent from my keyboard using the English language not some teen text shite from a fooking phone.
Re: FZR 600 carbs please help!
That's rather my point ...willandrip wrote:If you strip the float bowl threads by overtightening the cap screws you will already have sheared off the brass nuts that retain the jet blocks and also made total shite of the brass jets and the carbs will be now virtually scrap anyhow.
1989 3LN1 FZR250R, currently stock.
TTR Ignition Systems
TCI Repair and Ignition Transistor Upgrade
VRR Adaptor Harness
YZF600 TCI Adaptor
Running Light Fuse Carrier
TTR Ignition Systems
TCI Repair and Ignition Transistor Upgrade
VRR Adaptor Harness
YZF600 TCI Adaptor
Running Light Fuse Carrier