Wisconsin — Neon Lamp Timing
Adjustments · ignition timing
From a Wisconsin service manual covering: V-460D, V-461D, V-465D, V460D, V461D, V465, VH4, W4-1770, vg4d. Check it applies to your exact model before use.
Applies to: Wisconsin VH4
Before you start
- If the engine is running below 2000 R.P.M. when timing, the automatic advance will not be in the full advance position and the timing would not be accurate.
Procedure
- Chalk or paint the end of the 'X' marked vane on the flywheel white.
- Insert a small screwdriver into the No. 1 terminal tower on the distributor cap, making contact with the spark plug wire terminal.
- Connect the red terminal clip from a timing lamp to the metal portion of the screwdriver; connect one lamp wire to the battery and the other to ground.
- With engine operating at 2000 R.P.M. or over, allow the flash from the neon lamp to illuminate the whitened vane.
- At the time of the flash the leading edge of the vane should line up with the running spark advance timing hole on the flywheel shroud.
- If it does not, loosen the distributor clamp screw and turn the distributor body slightly clockwise or counter-clockwise until the white flywheel vane matches up with the advance timing hole. Tighten
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Running spark advance 23 degrees
- Not less than 2000 R.P.M.
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.