Draining Carbs

350TSS · 06-01-2020, 01:00 PM

I would get them off and give everything a large dose of plusgas particularly the slow running jets located (maybe ) under some rubber bungs (bungs usually go AWOL) just in front of the float drain plugs.
The cross head screws on the carburettors are soft and Japanese standard cross head (forget the correct reference letters - JP1?) whatever a PZ1 or PZ2 or a Phillips cross head will almost certainly chew it up before it undoes and then you have a problem.

Luddite · 06-01-2020, 01:58 PM

Quote:

Originally Posted by 350TSS

The cross head screws on the carburettors are soft and Japanese standard cross head (forget the correct reference letters - JP1?)

JIS? (Japanese industrial standard).

JIS screwheads are usually marked with a dimple/punch mark or an 'x'.

It's definitely worth having a couple of JIS screwdrivers in your toolbox. If you're used to struggling with Phillips/Pozi drivers on JIS screws, the first time you use the JIS driver is a revelation!

06-01-2020, 01:00 PM	#1
350TSS Too much time on my hands member Join Date: Jan 2013 Location: Shipbourne Bike: M900 Posts: 1,419	I would get them off and give everything a large dose of plusgas particularly the slow running jets located (maybe ) under some rubber bungs (bungs usually go AWOL) just in front of the float drain plugs. The cross head screws on the carburettors are soft and Japanese standard cross head (forget the correct reference letters - JP1?) whatever a PZ1 or PZ2 or a Phillips cross head will almost certainly chew it up before it undoes and then you have a problem.