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Keihin 0405-019-1000 retains the float valve in the float system. It fits standard PWK33, PWK35, PWK38 and PWK39, PWK35 and PWK38 Quad Vent / Air Striker, PWK36 Quad Vent and PWK41 carburetors.
Other applications include CR Special 26 to 39 mm, FCR, FCR-MX, PWK39 snowmobile and PWM38. This is the float-valve clip, not the jet-needle clip. It does not fit PWK28, which uses 0405-013-1000.
- Diagram references vary by family: reference 20 for the large-body PWK and PWM38 layouts, reference 30 for CR Special, reference 43 for FCR and FCR-MX, and reference 17 for the PWK39 snowmobile layout.
- Diagram reference — standard PWK33/PWK35/PWK38/PWK39: 20
- Diagram reference — PWK35–38 Quad Vent / Air Striker: 20
- Diagram reference — CR Special: 30
- Diagram reference — FCR Downdraft Inline-Four: 43
- Diagram reference — FCR-MX: 43
- Diagram reference — PWM38: 20
- PWK33 diagram reference: 20
- Diagram reference — Standard PWK35: 20

