Free guide to starting a UK plant hire companyUpdated October 2026 · Browse all guides

Fleet and equipment

Plant maintenance planning and service schedules

How to plan maintenance for a hire fleet: daily and off-hire checks, service intervals by engine hours, records, and scheduling work between hires so machines keep earning.

Guide specPHSUG-23
Read time8 min
LevelBeginner
Check levels4
UpdatedOct 2026

Key takeaways

  • A machine waiting for a part earns nothing but still costs its finance payment.
  • Use four levels: pre-hire check, off-hire inspection, scheduled service, statutory inspection.
  • Schedule services by engine hours from the manufacturer's manual, not by calendar alone.
  • Book services between hires, using your booking calendar, not when a machine breaks.
  • Keep a record for every machine: you'll need it for insurers, HSE and when you sell.

Why maintenance matters more in hire

A contractor's own machine breaks down and they lose a day. A hire machine breaks down and you lose the hire, pay for a breakdown visit, maybe pay for a replacement, and the customer remembers. Well-maintained machines also sell for more when you replace them.

Four levels of checks

LevelWhenWhoWhat
Pre-hire checkBefore every hireYard staff / driverFluids, leaks, tracks, safety devices, hitch, fuel, cleanliness, photos
Off-hire inspectionWhen it comes backYard staffDamage, wear, hours, fuel, faults reported by the customer
Scheduled serviceBy engine hoursFitterOils, filters, greasing, wear parts, per the manufacturer's schedule
Statutory inspectionSet intervalsCompetent personPUWER inspections; LOLER thorough examinations for lifting equipment

See PUWER, LOLER and thorough examinations for the legal inspections.

Service intervals

Use the manufacturer's service schedule for each model, usually based on engine hours, and enter it into your booking or fleet system. Typical schedules include a first service after a short running-in period, then regular oil and filter services and longer intervals for hydraulic oil and major components.

The off-hire check

  1. 01

    Record hours and fuel

    Against the hire, for charging and service planning.

  2. 02

    Photograph all sides

    Compare with delivery photos.

  3. 03

    Check for damage and leaks

    Tracks, rams, hoses, glass, bodywork, attachments.

  4. 04

    Ask about faults

    Customers often mention problems only if asked.

  5. 05

    Grease and clean

    Then quarantine the machine if it needs repair, or mark it ready.

More in off-hire procedures.

Keeping downtime low

  • Block service slots in the booking calendar when a machine is due, between hires.
  • Keep common wear parts in stock: filters, teeth, pins, bushes, hoses for your main models.
  • Agree response times with your dealer or fitter before you need them.
  • Track downtime per machine. Repeated faults mean it's time to sell.

Records

For every machine keep: service history with hours, parts used, defects and repairs, inspection and thorough examination reports, and modifications. Digital records are fine if they're secure and you can produce them for an inspector or insurer.

In-house or mobile fitter?

Mobile fitter / dealerOwn fitter
Best forFleets of a few machinesLarger fleets with a workshop
CostPay per jobWages, tools, van
SpeedDepends on their workloadUnder your control

FAQs

Common questions

How often should hire plant be serviced?
Follow the manufacturer's schedule for each model, usually by engine hours, and shorten intervals for machines working in harsh conditions or running breakers.
What should an off-hire inspection include?
Hours and fuel, photos of all sides, a check for damage and leaks, questions about faults, then greasing, cleaning and either quarantining or marking the machine ready.
Do I need to keep maintenance records?
Yes. Records support PUWER and LOLER duties, insurance claims and resale value, and help you spot machines that cost more than they earn.

This guide is general information for people setting up a plant hire business in the UK. It is not legal, tax, insurance or financial advice. Rules and thresholds change, so check current guidance on GOV.UK and take advice from an accountant, solicitor or broker before acting.