An excavator pre-start inspection is a structured visual and operational check completed before every shift. It takes 10 to 15 minutes and catches hydraulic leaks, undercarriage wear, boom defects and cab safety issues before the machine enters the work zone.
This guide covers the full pre-start process from walkaround through to operational testing and sign-off. It applies to standard, mini and zero-swing excavators from 1.5 to 50+ tonnes. Operators, supervisors and PCBUs (Persons Conducting a Business or Undertaking) all share responsibility for ensuring pre-starts are completed, actioned and retained as compliance records.
Before you start
Gather your excavator pre-start checklist (or the mini excavator version for compact machines), a torch, a grease gun for daily lubrication points, and full PPE including hard hat, hi-vis vest, safety boots and gloves.
Park on level ground with the bucket flat on the surface. Review the previous shift's pre-start record for outstanding defects. MapTrack's digital forms let you pull up the last completed checklist so nothing is missed between shifts.
Step-by-step pre-start
1. Walk around and check for hazards
Complete a full 360-degree walk around the excavator. Look for fluid leaks, loose or hanging hoses, debris around the tracks, damage from the previous shift, and any people or obstacles within the swing radius.
2. Check the engine bay
Open the engine bay covers and check oil on the dipstick, coolant in the overflow bottle, and hydraulic oil on the sight glass. Inspect belts for cracking or fraying and check the air filter restriction indicator. Look for leaks around fittings, hoses and the turbo. Top up fluids if marginally low, but report any significant drop to the workshop as it signals a leak.
3. Inspect the undercarriage
Check track tension by measuring the sag between the front idler and first top roller against the OEM specification. Inspect track pads for missing, cracked or heavily worn sections. Look at rollers, idlers and sprockets for wear or oil weeping from seals. Clear rocks and debris. See our greasing guide for daily lubrication points.
4. Check the boom, stick and bucket
Inspect all pins and bushes for wear, looseness or missing retaining hardware. Check hydraulic hoses and cylinders for leaks, chafing or damage. Examine bucket teeth and cutting edge for wear. If a quick coupler is fitted, verify the lock indicator and test the mechanism from ground level.
5. Complete cab checks
Clean all mirrors and camera screens. Fasten the seatbelt and pull it firmly to confirm the retractor locks. Verify gauges, warning lights and display screens power on correctly. Check joystick boots are intact and controls move freely. Test the horn, travel alarm and beacon.
6. Start and test all functions
Start the engine and allow it to reach operating temperature. Cycle every function: boom raise and lower, stick in and out, bucket curl and dump, full slew left and right, forward and reverse travel. Listen for abnormal noises and feel for slow response or drift.
7. Record and sign off
Complete the checklist with all findings, current machine hours and date. If a critical defect is found, tag the machine out of service and report it to the supervisor immediately.
Common defects
| Finding | Action |
|---|---|
| Hydraulic hose leak or weeping cylinder | Tag out, report for immediate repair |
| Low engine oil or hydraulic oil level | Top up to OEM spec and investigate cause |
| Worn or missing bucket teeth | Replace teeth before next digging shift |
| Incorrect track tension | Adjust via grease nipple or report to workshop |
| Cracked or missing mirror | Replace before operating |
| Faulty seatbelt (does not latch or retract) | Tag out, replace seatbelt before use |
| Warning light stays on after start-up | Do not operate until fault is diagnosed |
Pre-start vs service
A pre-start is not a substitute for scheduled servicing. The table below shows how the daily check fits alongside the OEM service intervals most manufacturers recommend.
| Aspect | Pre-start check | 250-hour service | 500-hour service | 1,000-hour service | 2,000-hour service |
|---|---|---|---|---|---|
| Frequency | Every shift | ~6 weeks | ~3 months | ~6 months | ~12 months |
| Performed by | Operator | Operator or fitter | Qualified fitter | Qualified fitter | Dealer or specialist |
| Scope | Visual and operational | Oil and filter change | + fuel filters, hydraulic sample | + hydraulic filters, coolant test | + full fluid change, valve adjust |
| Downtime | 10 to 15 minutes | 1 to 2 hours | 2 to 4 hours | 4 to 8 hours | 1 to 2 days |
| Record | Daily checklist | Service log entry | Service log entry | Service log entry | Full service report |
Regulatory requirements
In Australia, the Work Health and Safety Regulation 2017 classifies excavators as plant. Regulation 213 requires the person with management or control of plant to ensure it is inspected and maintained without risks to health and safety. As the PCBU, you must provide suitable checklists, train operators, action defects promptly and retain records for the life of the plant plus any period your state regulator specifies.
Operators have a duty under Section 28 of the WHS Act to take reasonable care for their own safety and cooperate with the PCBU. This means completing the pre-start honestly, reporting defects and refusing to operate a machine they believe is unsafe. Record retention varies by state but typically requires five years minimum.
In the United States, OSHA Standard 1926 Subpart O governs earthmoving equipment including excavators. Section 1926.602 requires equipment to be inspected before use and defects affecting safety to be corrected before the machine returns to service.
Going digital with MapTrack
Paper pre-start books get lost on site, sit in cabs unread or end up water-damaged and illegible for audits. MapTrack replaces them with a digital workflow. Each excavator carries a QR code label that operators scan to launch the correct checklist. The system captures operator name, timestamp and GPS location automatically.
When an operator flags a defect, MapTrack's automated alert system notifies the supervisor and workshop instantly. Critical defects trigger an automatic tag-out status, preventing other operators from using the machine until the fault is resolved.
Pair digital pre-starts with maintenance scheduling to link defect findings directly to work orders. When a service interval comes due, MapTrack notifies the right person and tracks the job to completion. See our forklift pre-start guide for a similar walkthrough on another common machine type.
