Thread: my day
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Old December 1st, 2020, 02:14 PM   #63
ducatiman
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Name: Gordon
Location: new york
Join Date: Sep 2009

Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R

Posts: A lot.
MOTM - Nov '18, Mar '17
Found clogged "check valve" (actually a main jet). These are pressed out of and into the carb body (rather than threaded)

Removed, disassembled, cleared/cleaned both fuel openings and *tiny* diaphragm. A 10mm socket shown for reference, note the black circle.
It gets captured into the valve...subject to intake/exhaust pulses, disallows or allows fuel passage, so the valve doubles as both a main jet and a plug on command. Simple, but so tiny, tricky to service.

These little carbs can go for up to $160.....so fix, avoiding replace.
Basic carb kit under $10!

My learning curve progressing...while keeping costs down for the 'scaper.
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File Type: jpg walbro4.jpg (77.8 KB, 2 views)
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Custom Carb Service
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