Wisconsin — Adjust idle or low speed
Adjustments · Stromberg OH-5/8 carburetor
From a Wisconsin manual covering: HS7D, HS8D, MVH4D, S10, S10D0, S12D, S12D0, S12D2, S14D, S14D2, S7D, S8D…. Check it applies to your exact model before use.
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Procedure
- Warm engine until intake manifold is warm to hand
- Close throttle to minimum steady idle
- Turn idle needle valve out for richer, in for leaner
- Adjust until engine runs steady and as fast as throttle position permits
- Use throttle stop screw to set desired speed
Tools required
- hand throttle Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Idle needle valve
Source: Wisconsin 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.