Petrol Pressure Washers.

When you need serious power for industrial cleaning, a petrol pressure washer or petrol high pressure washer delivers unmatched performance. These powerful cleaning solutions are built tough for demanding outdoor cleaning tasks where electricity isn't an option. Forget limitations and tackle the biggest jobs with the raw, go-anywhere force of a petrol-driven machine. Explore our range and find the right model to blast away grime and boost your efficiency on any worksite.

FAQs

Common questions answered.

Five of the questions we hear most often on carpark and street linemarking gear. Full knowledge base on our FAQ page.

  • Why Honda GX?

    Honda GX is the contractor industry standard for petrol pressure washers - reliability proven across decades, parts and service availability Australia-wide, long service life under daily duty. GX160 (5.5 HP) for entry commercial, GX270 (9 HP) for mid, GX390 (13 HP) for heavy, GX390 V-twin for the heaviest single-engine spec. Spec the engine HP to the pump flow + pressure - undersized engines lug and die early.

  • Axial or triplex?

    Axial for entry commercial (1-2 hr continuous duty, then cool-down). Triplex for daily commercial (6-8 hr continuous duty rating). Triplex pumps are belt or gear-driven, run at lower pump RPM, produce higher pressure and last much longer. Daily contractor work = triplex.

  • Hornet G2 vs Senator G2 vs Executive G2?

    Hornet G2 is the mid-commercial petrol line (4060 PSI x 15 L/min on the 280-15, 3000 PSI x 21 L/min on the 200-21). Senator G2 is the high-flow commercial (4060 PSI x 21-31 L/min). Executive G2 is the flagship at 5075 PSI x 23 L/min on the 350-23 - the highest-PSI petrol commercial in the Jetwave range. Pick by PSI need and flow target.

  • e-Start: worth it?

    Jetwave Raptor e-Start GX390 is the electric-start variant of the GX390 commercial - one-button start without pull-cord. Worth it for daily commercial use where pull-start is a friction point - cold mornings, older operators, frequent start/stop work. The pull-start GX390 is identical in pump + pressure spec; the e-Start is purely a starting-method upgrade.

  • How do I maintain petrol pressure washers for long service life?

    After each use, flush clean water through the system and wipe down external surfaces. Inspect hoses, fittings and o-rings for wear or cracking before each use. Change pump oil per the OEM schedule (typically every 50-100 hours for petrol units). Store indoors or under cover to prevent UV degradation of hoses and seals. For seasonal storage, run a pump-saver solution through the system to prevent mineral buildup and corrosion. Replace worn nozzles before they affect spray pattern — a worn nozzle increases water consumption and reduces cleaning efficiency.

Full guide

Petrol Pressure Washers

21 petrol-engine pressure washers from Graco G-Force II and Jetwave. Covers entry commercial (Honda GX160 + axial pump, 3300 PSI) through to flagship commercial (Honda GX390 V-twin + triplex pump, 5075 PSI). The right power source for outdoor portable work without mains - construction sites, agricultural, mining, fleet wash, fence and exterior brick.

Engine standard. Honda GX is the contractor industry standard - reliability, parts availability across Australia, long service life. GX160 (5.5 HP) on entry commercial (3300 PSI x 11-12 L/min). GX270 (9 HP) on mid commercial (3500-4000 PSI x 15 L/min). GX390 (13 HP) on heavy commercial (4000 PSI x 21 L/min). GX390 V-twin (the PMG G2 V-twin model) on the heaviest single-engine spec (4000 PSI x 26 L/min). Briggs Vanguard suits some specialty applications.

Pump type. Axial pump on entry commercial - direct-driven, lower-cost, suits intermittent commercial use (1-2 hours continuous, then cool-down). Triplex pump on heavy commercial - belt or gear-driven, higher pressure, 6-8 hour daily continuous duty rating, longer service life. Daily contractor work = triplex.

Hornet G2 vs Senator vs Executive. Hornet G2 is the mid-commercial Jetwave petrol line (4060 PSI x 15 L/min on the 280-15 model, 3000 PSI x 21 L/min on the 200-21). Senator G2 is the high-flow commercial (4060 PSI x 21-31 L/min). Executive G2 is the flagship - 5075 PSI x 23 L/min on the 350-23, the highest-PSI petrol commercial in the Jetwave AU range.

Raptor electric-start. Jetwave Raptor e-Start GX390 is the electric-start variant of the GX390 commercial petrol washer - one-button start without pull-cord. Suits the contractor on cold mornings or with older operators where pull-start is the friction point in daily use.

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Not sure which one's right?

Tell us the carpark size, how often you'll use it, and whether you need battery or petrol. We'll come back with a shortlist and a trade quote within the day.

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