Generac QT Series Generator Set

⚠ Ensure AUTO/OFF/MANUAL switch is in OFF position before working on the generator.

Tools: Manometer

1. Ensure 120VAC circuit breaker to battery charger is open.
2. Remove the fuse from the control panel (H-100/R-series: 15 Amp ATO fuse).
3. Connect battery cables; attach negative cable last.
4. Close 120VAC circuit breaker to the battery charger.
5. Insert the fuse into the control panel.
6. Move AUTO/OFF/MANUAL switch to MANUAL; engine should crank and start.
7. Check voltage at generator terminals and check for leaks.
8. Close generator main line circuit breaker; turn generator set off.

⚠ Make sure fuel supply is of proper pressure and type for configuration.

⚠ Keep ports free from debris during reconfiguration.

Tools: Pipe sealant

1. Turn the main gas supply off.
2. Remove carburetor fuel hose from outlet Port 1 of demand regulator.
3. Remove brass hose fitting from Port 1.
4. Remove pipe plug from Port 2.
5. Install brass hose fitting into Port 2.
6. Install pipe plug into Port 1.
7. Connect carburetor gas hose to brass fitting; tighten all clamps and plugs.
8. Set the Dip switch inside the control panel to LP or NG position.

⚠ Do not use tap water in batteries.

⚠ Storage batteries give off explosive hydrogen gas.

⚠ Do not use jumper cables or a booster battery to crank the engine.

Tools: Automotive-type battery hydrometer

1. Inspect battery posts and cables for tightness and corrosion; tighten and clean as necessary.
2. Check battery fluid level of unsealed batteries; fill with DISTILLED WATER only if necessary.
3. Have state of charge and condition checked with an automotive-type battery hydrometer.

⚠ Never operate engine with oil below the dipstick ADD mark.

⚠ Do not overtighten the oil filter.

Tools: Suitable container, Clean, lint-free cloth

1. Remove OIL DRAIN HOSE from its retaining clip.
2. Loosen and remove OIL DRAIN HOSE CAP; drain oil completely into suitable container.
3. Install and tighten OIL DRAIN HOSE CAP; re-install into retaining clip.
4. Turn OIL FILTER counterclockwise and remove; dispose of old filter.
5. Apply light coating of new engine oil to seal of new filter; install and tighten by hand only.
6. Remove OIL FILL CAP; add recommended oil. Do not fill above dipstick FULL mark.
7. Start engine and check for oil leaks.

1. Remove the air cleaner cover.
2. Replace the air filter, making sure it is positioned properly.
3. Reattach the cover.

⚠ Do not blast the spark plugs to clean.

Tools: Wire feeler gauge, Wire brush, Commercial solvent

1. Clean area around base of spark plugs to keep dirt out.
2. Remove spark plugs and check condition; replace if worn or reuse questionable.
3. Check gap with a wire feeler gauge; adjust by carefully bending ground electrode.

⚠ Do not crank the engine continuously for longer than 30 seconds.

⚠ Do not attempt manual operation until all power supplies to the transfer switch are positively turned off.

1. Turn OFF or disconnect utility power circuit to the transfer switch.
2. Set transfer handle to UTILITY (NORMAL) position.
3. Set generator main line circuit breaker to OFF (or OPEN).
4. Start the generator; let engine stabilize and warm up.
5. Move transfer switch manual handle to STANDBY (GENERATOR) position.
6. Set generator main line circuit breaker to ON (or CLOSED).

1. Set generator main line circuit breaker to OFF (or OPEN).
2. Move transfer switch handle to UTILITY (NORMAL) position.
3. Turn ON the utility power supply to the transfer switch.
4. Let generator run at no-load a few minutes to stabilize temperatures.
5. Shut down the generator.