Wisconsin — Fuel Pump Priming
Operation
From a Wisconsin service manual covering: FM-X4B7D, V-460D, V-461D, V-465D, V460D, V461D, V465, Y-128-S1, YB-85A. Check it applies to your exact model before use.
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Procedure
- Move hand primer lever up and down; distinct resistance of diaphragm should be felt.
- If not, turn engine one revolution so fuel pump drive cam rotates from upper position.
- Assuming strainer is empty, approximately 25 strokes required to fill bowl.
- After strainer bowl full, additional 5 to 10 strokes fill carburetor bowl.
- When carburetor is full, hand primer lever moves more easily.
Source: Wisconsin service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.