Skip to main content
ProService Generator Repairs

Petrol Repairs · Gauteng

Petrol Generator Repairs in Gauteng.
Portable and Home Units.

Petrol generator won't start, starts then dies, or runs with no power at the sockets? ProService Generator Repairs fixes portable and home petrol generators on site in Johannesburg, Pretoria and across Gauteng, including Honda, Ryobi, Kipor, Mac Afric and Gentech units. We start with fuel and spark, so you only pay for what is needed, and we are open 24/7 when the power goes out.

Call 082 057 4605WhatsApp UsRequest a Quote

Callout fee waived when you accept our written quote. 1-year workmanship guarantee. See prices

  • Home and portable petrol units
  • Carburettor and spark diagnosis
  • Electric and recoil start
  • Onsite Gauteng repairs
Red Ryobi RG-7900K 6800 W petrol generator with digital meter and sockets, on brick paving in sunlight

The Service

Why petrol generators fail, and how we fix them

Petrol generators in Gauteng are usually smaller than the diesel canopies on commercial sites: home standby, shop backup, and portable frames that come out when the power goes off. They fail in petrol-specific ways. Stale fuel in the carburettor bowl, a fouled spark plug, a stuck float or a recoil that will not catch are everyday jobs for us, and none of them involve diesel injectors.

Petrol that sits for weeks varnishes the jets and needles. The engine may crank, or the recoil may feel normal, and it never fires. Or it starts, hunts and dies as soon as you open the choke. Those are mixture and spark faults, though we still check the battery first on electric-start units.

We also fix output faults on petrol frames: a tripped breaker on the set, a failed AVR on larger petrol standby units, or dead sockets while the engine runs flat out. They follow the same electrical logic as bigger machines, at a household scale.

We come to homes across Johannesburg, Pretoria and Centurion, and to small commercial premises across Gauteng. We service and repair Honda, Yamaha, Ryobi, Kipor, Mac Afric and Gentech generators. If you have a larger diesel canopy set, our diesel generator repairs service covers it.

Red Ryobi RG-7900K 6800 W petrol generator showing its control panel, AVR and sockets beside a mesh fence

Petrol generator down?

Call or WhatsApp 082 057 4605 for onsite petrol generator diagnosis in Gauteng.

Call 082 057 4605WhatsAppRequest a Quote

Petrol Generator Brands We Repair & Service

We service and repair the petrol generator brands below. Hyundai, Kipor, Rato and Lutian also make diesel sets, so tell us which fuel yours uses and we bring the right parts.

Other Petrol Generator Brands We Service

We also repair these petrol makes. Send the model when you book and we check parts before we visit. Bundu Power petrol and inverter sets have their own page: Bundu Power generator repairs.

  • Ford
  • VTools
  • Altiverter
  • Weiting
  • Senci
  • Pentamark
  • Omega

Petrol-Specific

Faults we see on petrol generators

  • Will not start after sitting

    Stale petrol gums the jets, dries out the carburettor or floods the bowl after repeated pulls. We clean or rebuild the carburettor and refill with fresh fuel.

  • Starts then dies

    A blocked idle jet, a failing fuel tap, a blocked cap vent or a hunting governor kills the engine as the choke comes off. We find which one.

  • No spark

    A fouled plug, a cracked cap, a failed coil or a kill switch stuck to earth stops ignition. If the engine cranks with no smell of fuel burning, we start here.

  • Recoil or electric start faults

    We replace broken recoil springs and worn pawls, and repair starters that only click on electric-start home units.

  • Runs, little or no power

    A tripped breaker on the set, a failed AVR on larger petrol standby units or overloaded sockets leave you without power while the engine runs.

  • Hunting and black smoke

    A rich mixture, a dirty air filter or a carburettor still coated from old fuel makes the engine surge and smoke. We clean and set it correctly.

How We Work

Spark and fuel before a full strip

  1. 01

    Fresh fuel and spark first

    We check whether the tank and bowl have usable petrol and whether there is spark at the plug before stripping the carburettor.

  2. 02

    Carburettor and start system

    We test the float, jets and choke, check the electric start on units that have one, and inspect the recoil on pull-start sets.

  3. 03

    Output if the engine runs

    If the engine runs, we test the breakers, sockets and, on larger petrol standby units, the AVR, because a healthy engine can still leave the sockets dead.

  4. 04

    Repair and a loaded check

    We confirm it starts without endless choke and that it holds a representative household or shop load.

Storage

Sitting unused is the usual petrol failure mode

Fuel left in the machine causes more petrol no-starts than anything else we see. Heat in a Gauteng garage speeds up the gum that forms in the carburettor bowl. Draining the carburettor before a long idle spell prevents most of these callouts.

Keep petrol and diesel advice apart. A 5 kVA petrol frame and a 100 kVA diesel standby set fail in different ways, and mixing the two is how the wrong parts get ordered.

  • Drain unused petrol

    Empty the carburettor bowl before the set stands for weeks

  • Spark before carb strip

    A fouled plug is cheaper to prove than a rebuilt carburettor

  • Portable vs standby

    Open frames and small canopies share the same petrol faults

  • Run it monthly

    A short monthly run keeps fuel moving and the battery charged

Inverter or Conventional

Inverter and conventional petrol generators compared

Petrol generators come in two designs. They are repaired differently, and they suit different uses.

  • Conventional (open-frame) sets

    The engine runs at a fixed speed so the alternator produces 50 Hz directly, with voltage held by an AVR or a capacitor. They are usually cheaper per kVA, louder, and better at starting heavy motor loads.

  • Inverter sets

    The alternator produces high-frequency power that is converted electronically to a clean 50 Hz output. Engine speed can drop at light load, so they are quieter and use less fuel when lightly loaded. Most are smaller, portable units.

  • Which suits electronics

    Inverter output is usually cleaner, which suits computers, TVs and chargers. A conventional set with a good AVR can run them too; check the manual for what the manufacturer allows.

  • Which suits motors and tools

    Pumps, compressors and power tools draw a starting surge. Check the surge or maximum rating in the manual, not just the running rating, whichever design you choose.

  • How the repairs differ

    Both share engine faults such as stale fuel and carburettor blockages. Conventional sets add AVR, capacitor and brush faults; inverter sets add the inverter module and electronic throttle control, which are model-specific parts.

  • Choosing between them

    Use the size calculator to estimate the load and surge first. Then weigh noise, fuel use at your typical load, the surge you need and the budget.

Common Questions

Petrol generator repair questions

Why will my petrol generator not start after it sat unused?

Your petrol generator will not start because the fuel in the carburettor bowl has gone stale and gummed the jets, or the spark plug has fouled. We check spark and fuel condition first, which usually finds the fault without any engine work.

Can you repair small home petrol generators?

Yes. We regularly repair portable and small standby petrol units across Gauteng, alongside larger diesel sets. Tell us the brand and whether it cranks or the recoil pulls freely.

Is it worth repairing a petrol generator versus replacing it?

Usually yes for fuel, spark and starting faults, because a carburettor clean and a new plug cost far less than a new generator. Replacement makes more sense when the engine has run without oil or the crankcase is damaged. We quote the repair in writing so you can compare the two.

How much does a petrol generator repair cost?

Many petrol faults are inexpensive. As a guide, carburettor cleaning or a rebuild is typically R900 to R2,200 and a spark plug R200 to R500. Starter or output faults cost more. You get a written quote before any work starts.

Which petrol generator brands do you repair?

We service and repair Honda, Yamaha, Ryobi, Kipor, Mac Afric, Gentech and PowerBoss generators, and we repair most other portable and home petrol brands too. Send the brand and model, or a photo of the label, when you book.

How do I stop my petrol generator failing after long breaks between outages?

Run the generator for a few minutes every month, or drain the carburettor if it will stand unused, and always use fresh fuel. An annual service catches worn plugs, filters and recoil parts before they fail. Our cost guide puts a basic service at R900 to R1,800, and our petrol generator servicing and maintenance page sets out what the visit covers.

Do petrol and diesel generators fail in the same way?

They share some faults, such as flat batteries, control problems and an engine that runs with no power. They differ on fuel: diesels have injection equipment and glow plugs, while petrol units have spark plugs and carburettors. So we start the diagnosis in different places.

Still unsure what the fault is? Call or WhatsApp 082 057 4605 for onsite diagnosis.

Call 082 057 4605WhatsAppRequest a Quote

Related Services

Petrol starting, output and diesel sets

Service Areas

Petrol repairs across Gauteng

We repair petrol generators at homes and small businesses in Johannesburg, Pretoria, Centurion, Sandton, Randburg, Fourways, Soweto and Roodepoort.

What to send before we attend

These details help us plan the visit and bring the right parts. Send what you can on WhatsApp; if you can’t find the model number, we still book the visit.

Location
The suburb or site, so the visit can be booked in the right area.
Make and model
The generator brand and model, if they are known.
kVA
The size printed on the data plate.
Fuel type
Diesel, petrol, LPG, natural gas, or dual-fuel.
Controller model
The module name on the panel, when it is visible.
Fault or alarm
What the set does, and any text on the screen.
Photos
The generator, the data plate, and the controller or alarm. Send these on WhatsApp.

Book a Repair

Need a petrol generator repaired?

Tell us the size if you know it (for example 3.5 kVA or 6.5 kVA), whether it is recoil or electric start, and what it does when you try to start it.

Photos of the generator and the data plate can be sent on WhatsApp.

Add your email (optional)
  • Free written quote before any work starts
  • Callout fee waived when you accept the quote
  • 1-year workmanship guarantee

We use your details only to reply to this enquiry and never sell or share them for marketing. Privacy policy

What happens next

  1. We reply with questions about the generator, or to book a visit.
  2. A technician comes to you. For a breakdown we arrive within 1 hour.
  3. The fault is diagnosed on site and you get a written quote. No work starts until you accept it.

Charlie, lead technician: Degree in Mechanical Engineering, Degree in Electrical Engineering, Diesel Plant Fitter. Generator specialists since 2000.