Predator 3500 Super Quiet Inverter (Item 59137) oil type and capacity and spark plug
GarageDex's data from Predator's own published specs: the Predator 3500 Super Quiet Inverter (Item 59137) takes 10W-30 oil (20 fl. oz.) and a Torch F7RTC or equivalent spark plug gapped 0.027-0.031 in. It is rated 3,000 running watts and 3,500 starting watts.
Shop 10W-30 oil The spec in the Predator 3500 Super Quiet Inverter (Item 59137) manual
Key takeaways
- Oil capacity: 20 fl. oz.. Add it in stages and stop at the dipstick's full mark rather than pouring the whole amount at once.
- Spark plug: Torch F7RTC or equivalent, gap 0.027-0.031 in.
- 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-30SAE 10W-30 recommended for general use | “Engine Oil Type SAE 10W-30Capacity 20 fl. oz.” source |
| Oil capacity | 20 fl. oz. | “Engine Oil Type SAE 10W-30Capacity 20 fl. oz.” source |
| Spark plug | Torch F7RTC or equivalent | “Spark Plug Type F7RTC (Torch) or equivalentGap 0.027"– 0.031"” source |
| Spark plug gap | 0.027-0.031 in | “Spark Plug Type F7RTC (Torch) or equivalentGap 0.027"– 0.031"” source |
| Fuel tank | 2.64 gal (10.00 L) | “Capacity 2.64 Gallon / 10.00 Liter” source |
| First oil change | break-in about 30 hours; change oil after | “b. The break-in period will last about 30 hours of use.” source |
Parts for the Predator 3500 Super Quiet Inverter (Item 59137)
Each Buy button searches Amazon for the exact spec in the manual.
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Other Predator generators
Source: Harbor Freight Item 59137 Owner's Manual (PDF). If your unit's own manual or label differs, follow it.