We may pull in revenue from the products useable on this page and enter in affiliate platform . pick up More ›

dwelling generators come in several sizes with a range of power outputs . Having one when the power goes out can ascertain category member rest warm in a winter storm or aid refrigerated food stay cold during a summertime outage .

Like all appliances and power tools , generatorsrequire periodical maintenance to keep them operating at vertex carrying out . As part of Bob Vila ’s product - examination program , we install and try out a26kW Briggs & Strattonstandby source . During the testing , we make directly with Matt Buff , Senior Trainer Standby Power for Briggs & Stratton , who told us , “ establishing a preventative maintenance routine is essential to ensure that your generator will run smoothly in an emergency brake . ”

A professional technician is working on a home generator.

Photo: LifestyleVisuals/E+ via Getty Images

The Benefits of Generator Maintenance

Regular maintenance of yourhome generatoris crucial to keep it running efficiently and reliably when you need it most . This is especially important during hurricane or winter storm seasons , when a generator can really make a Brobdingnagian divergence . primal welfare of keeping up with generator maintenance admit :

Generator Maintenance After Each Use

When talk about author for plate use , no one wants to discover that it wo n’t start when the power move out . Depending on thetype of generator(portable or standby ) , recommend alimony labor vary , but in all cases , they keep the author ’s mechanical elements in working order . The best prison term to perform menage generator maintenance is before you need the generator , although the following tasks should be tackled after each habit .

1. Clean the Generator

Standby generator have protective cases , but fellate crap and debris can build up up and close up airflow vents . Wipe the exterior with a damp rag , clear rubble from air inlet and outlets with a soft brush , or apply a vacuum ’s hose attachment to clear away dirt that ’s blown inside the social unit .   do these dim-witted generator cleanup tasks after each usage . poop and dust left on the generator can result in rusting or even cast formation . If you ca n’t stash away the unit in a garage , moot buying a generator coverto help keep it clean .

2. Check Engine Oil

Most types of generator that use fuel ( gasoline , propane , Rudolf Christian Karl Diesel ) to unravel will have an oil artificial lake containing the oil color that keeps the engine ’s act piece lubricated . After economic consumption , correspond the oil color degree ( confer with the owner ’s manual of arms for how ) and add oil if it is low than it should be . apply only the type of oil recommend by the manufacturer .

The elision to this rule is a four - stroke railway locomotive found on some smaller portable generators . A four - diagonal engine demand mixing the engine oil with the fuel so that four - stroke possessor can cut this maintenance task .

3. Drain Fuel Before Storing a Portable Generator

Having enough fuel to operate a author is crucial , but do n’t exit idle gasolene or diesel in a portable generator ’s fuel tank car . If the generator sits in repositing for a few months , fuel left in the tank car can thicken ( called “ seal ’ ) , which can leave to choked fuel valves . The solvent is to debilitate the army tank , set forth the generator , and let it operate to flush out leftover fuel in the carburetor .

Always keep up the owner ’s manual . Somegenerator brandsmay suggest incorporating a fuel linear ( to prevent varnishing ) rather than enfeeble the fuel if you plan to use the generator within a few month .

Weekly and Monthly Generator Maintenance Checklist

Some maintenance task need not be do after every author habit , but a few “ simple step can save you metre and money on big upkeep issues down the route , ” Buff said . Your owner ’s manual may indicate performing some project either every week , monthly , or after a situated number of 60 minutes of source usage .

1. Start up the Generator

For standby models , this may be reflexive . TheBriggs & Stratton standby generator we reviewedis configured to automatically start up weekly to check it ’s always ready to amount on when the power go out . Like clockwork , the author start up every Tuesday at 2 p.m. and runs for a few second .

A portable generator should be manually start on a bi - weekly foundation if it sits with fuel in the armoured combat vehicle . This allows the oil to circulate through the engine to lubricate all the components . For those wondering how long to run a generator for maintenance : Just countenance it run 5 to 10 minutes is sufficient .

2. Inspect for Damage and Take Preventative Steps

What could occur to a generator that ’s just sitting there , unused ? A luck , unfortunately , especially if the home has a rodent problem . mouse and other pocket-size rodents can manducate wiring that can be costly to revive . Be argus-eyed — take care for dung near the author and be alert to odors — rodent urine has a sour smell .

During source inspection , face for hole in wires or small twig and dust that could signal nest - construction . If you mistrust rodent natural action , consult a rodent control expert or userodent bait stationsto prevent damage .

3. Change Oil and Filter

How often you need to change the crude oil in the generator will depend on how much you ’re bunk it . Someportable generatorscall for an initial crude change after the first 30 hr of use . After that , rock oil should be changed after every extra 100 hours of use . The Briggs and Stratton standby source we tested calls for changing the oil after every 100 minute of surgical procedure .

Change the fossil oil filter when you change the oil . habituate only the type of oil and filter recommend by the manufacturing business . It ’s a ripe mind to keep some oil and a spare filter on paw , so you have them when you need them .

Annual Generator Maintenance Tasks

As long as you do the generator checklist of tasks number above , bothportable and standby generatorsshould be in safe form . Still , many possessor opt to have standby generators professionally serve . Those with portable generator who do n’t require to do their own criminal maintenance can take the units to local pocket-size railway locomotive specializer for servicing or portable generator repair .

1. Replace the Plugs

Dame Muriel Spark plugs ( or shine plugs , if yours is a diesel - powered source ) produce the tiny electrical sparks that are necessary to combust the fuel when a generator start up . But , over sentence , hoopla can fail , stimulate the generator ’s engine to misfire or not set forth at all . replace the plugs in a generator after a twelvemonth or 100 hour of use , whichever comes first , will avail check the unit starts quickly the next time you need it .

2. Change the Air Filter

The aura filter on a generator obturate filth and junk from enter the engine , so when the filter becomes clotted , the generator may not lean swimmingly , or the engine can overheat because the choked filter does n’t countenance an equal amount of air to enter . This outcome in poor free energy output , so changing the aura filter should be on the inclination of annual maintenance project .

Like nag , the general rule for replacing an zephyr filter is after 1 twelvemonth or 100 hours of use . If the generator has been operated in a stale environment , reckon replacing the airwave filter sooner to head off problem .

3. Schedule a Professional Checkup

Owners of standby generators are well - advised to have their unit of measurement professionally serviced every yr or two to catch and correct any problem before they can direct to more important issues .

thoroughgoing standby generator maintenance requires a knowledgeable technician who can essay a dwelling ’s electrical circuitry and scrutinise the transfer shift that manoeuver the flow of electrical energy . “ A good rule of thumb is to get your generator serve either every 2 years or after 200 hours of use , ” Buff said .

When to Call a Professional

While veritable maintenance can be done by householder , some situations will command the expertness of a professional . To help keep your generator safe and operational , here ’s when you should weigh calling in the professional :

FAQs

This depends on how long you design on storing the author . For shorter periods ( up to a year ) , it ’s good to store it with a full armored combat vehicle of fuel to help prevent wet from contract inside the tank , which can lead to corroding . Otherwise , if you ’re lay in the source for a very long time ( over a year ) , consider draining the fuel completely and launch the carburettor dry to preclude any fuel abjection issue .

No , running a generator in the raincan be dangerous due to the danger of burning . To protect your generator , expend a weatherproof cover or shelter that permit for proper ventilation while keeping it juiceless .

A source can model idle for a few calendar month , but it ’s best to run it now and again ( every 1 - 2 months ) to keep the engine lubricated and to ensure it ’s quick to operate when you need it . If it will be idle for an extended period , consider draining the fuel or using a fuel stabilizer .

checking the engine oil of a generator

Photo: Glenda Taylor

A generator should be placed at least 20 feet from your house to ensure right ventilating system and reduce the risk of exposure of carbon monoxide entering the home . verify it ’s in a well - ventilated area , off from door , windows , and vents .

Everything You involve for a Lush and Healthy Lawn

hold back your grass unripened and your flora thriving does n’t just take a green thumb — it starts with the right tool and supplies .

A person is starting a portable home generator next to a fuel can.

Photo: ASphoto777/Depositphotos

A person is looking inside a home generator.

Photo: Lowe’s

Multiple technicians working on a home generator.

Photo: JodiJacobson/E+ via Getty Images

Article image