Predator 420cc oil type and capacity and spark plug
GarageDex's data from Predator's own published specs: the Predator 420cc takes SAE 10W-30 above 32 F; 5W-30 at 32 F or below oil (1.16 US qt) and an NHSP / Torch F6TC spark plug gapped 0.027"-0.031".
Shop 10W-30 oil The spec in the Predator 420cc manual
Key takeaways
- Oil capacity: 1.16 US qt. Add it in stages and stop at the dipstick's full mark rather than pouring the whole amount at once.
- Spark plug: NHSP / Torch F6TC, gap 0.027"-0.031".
- Every value on this page is quoted from Predator's own manual or spec page, linked beside it.
| Item | Spec | From the manual |
|---|---|---|
| Engine oil | SAE 10W-30 above 32 F; 5W-30 at 32 F or below | “Engine Oil Type SAE 10W-30 above 32° F5W30 at 32° F or below” source |
| Oil capacity | 1.16 US qt | “Engine Oil Type SAE 10W-30 above 32° F5W30 at 32° F or below Capacity 1.16 Quart” source |
| Spark plug | NHSP / Torch F6TC | “Use only NHSP®/Torch® F6TC spark plug.” source |
| Spark plug gap | 0.027"-0.031" | “Gap 0.027" - 0.031"” source |
| Fuel | unleaded, 87+ octane | “Fuel Type 87+ octane unleaded gasoline” source |
Parts for the Predator 420cc
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Other Predator small engines
Source: Harbor Freight Predator 420cc Owner's Manual item 60340 (PDF). If your unit's own manual or label differs, follow it.