Free fishbone diagram template
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Free fishbone (Ishikawa) diagram template (PDF-ready). 6M cause-and-effect categories for reliability, quality and ops root-cause investigations.
Commercial Director
Updated 18 May 2026
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Used by construction, mining and field service teams
What is a fishbone diagram template?
A fishbone diagram template is a structured visual worksheet used by reliability engineers, quality managers and operations teams to brainstorm and categorise the potential causes of a defined problem or undesirable effect. Also known as an Ishikawa diagram or cause-and-effect diagram, the template places the problem statement at the head of a horizontal spine, then organises potential contributing causes along angled bones grouped into six standard categories: methods, machines, materials, manpower, measurement and environment. Teams populate each bone during a structured brainstorm, then drill into the most plausible branches to focus subsequent investigation effort.\n\nThe Ishikawa method was developed by Kaoru Ishikawa at Kawasaki shipyards in the 1960s and is referenced in ISO 9001:2015 clause 8.7 (Control of nonconforming outputs) and clause 10.2 (Corrective action) as a recognised analytical technique. Unlike the linear 5 Whys, the fishbone format encourages divergent thinking before convergent analysis, surfacing contributing factors that a single causal chain would miss. The template provides a repeatable framework that ensures the team considers people, process, equipment, materials, measurement systems and environmental influences before agreeing on which causes warrant deeper root cause investigation. It is widely used in manufacturing, healthcare, mining and construction wherever a defined problem needs to be unpacked before corrective action is committed.
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Benefits of using this fishbone diagram template
- Structured brainstorming: the six-category framework prevents teams anchoring on a single suspected cause and forces consideration of process, equipment, materials, people, measurement and environment.
- Visual communication: a completed fishbone diagram presents complex cause-and-effect relationships in one page that stakeholders can scan quickly during management reviews and audit closings.
- ISO 9001 alignment: clause 10.2 of ISO 9001:2015 requires organisations to determine the causes of nonconformities, and the fishbone method is a recognised analytical technique that satisfies this requirement.
- Team alignment: the template provides a shared workspace where engineers, operators and quality leads can debate contributing factors using evidence rather than opinion or hierarchy.
- Investigation focus: by mapping every plausible cause before drilling in, teams avoid spending hours on the wrong branch and direct verification effort to the highest-likelihood factors first.
- Recurrence prevention: identifying systemic causes across multiple categories surfaces interactions between equipment condition, procedures and human factors that single-method investigations frequently miss.
- Audit evidence: a completed and dated fishbone worksheet linked to a nonconformance record in MapTrack provides documented proof that root cause analysis was conducted before corrective action was approved.
Benefits of digitising forms in MapTrack
When you move your procedures from paper to MapTrack, you get:
- Field users can easily scan a QR code to complete a form on mobile. Unlimited users.
- Automatically get alerts when faults are identified.
- Link every form digitally as a PDF to the relevant asset, location or person.
- Receive a digital PDF copy with every submission to your email.
- Ability to share forms digitally.
- Build conditional logic (show or hide questions based on answers).
- Take pictures or attach photos. Not possible with a paper-based form.
- Electronic signatures.
- Edit forms later without reprinting.
- Restrict permissions (who can view, complete or approve).
- Build forms with AI (describe what you need and MapTrack suggests the form).
- Trigger work orders automatically when a fault is logged during an inspection.
- Track service intervals by hours, kilometres or calendar date in one place.
- Attach supplier invoices and parts receipts to each maintenance record.
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What to include in a fishbone diagram template
This fishbone diagram template covers 10 key areas:
- Investigation header: problem reference number, problem statement, date of analysis, facilitator name, participants and the corrective action or nonconformance record this analysis supports.
- Problem statement at the head of the fish: clear, factual description of the effect being investigated, with quantified impact where possible (rejection rate, downtime hours, customer complaints).
- Methods branch: process steps, work instructions, procedures, sequencing, supervisor checks and operating envelope that may have contributed.
- Machines branch: equipment condition, calibration status, maintenance currency, design limits, tool wear and machine setup that may have contributed.
- Materials branch: raw material specification, supplier batch, storage condition, handling damage and substitution history that may have contributed.
- Manpower branch: training currency, competency, fatigue, communication, supervision, staffing levels and shift handover quality that may have contributed.
- Measurement branch: gauge calibration, test method, sampling plan, data integrity and inspection criteria that may have contributed.
- Environment branch: temperature, humidity, lighting, vibration, contamination, layout and time-of-day factors that may have contributed.
- Cause ranking: highest-likelihood causes shortlisted from each branch with evidence references for verification.
- Next steps: verification actions, owners and due dates for the top-ranked causes feeding the corrective action plan.
How to use this fishbone diagram template
- Define the problem at the head of the fish: write a factual, quantified problem statement on the right-hand side of the worksheet so the team has a shared focus for the analysis and avoids drifting into unrelated issues during the session.
- Assemble a cross-functional team and convene a brainstorming session: include process operators, maintainers, quality, engineering and a facilitator who keeps the discussion grounded in evidence rather than opinion or blame.
- Populate each of the six category bones: work through methods, machines, materials, manpower, measurement and environment in turn, capturing every plausible contributing factor without filtering or debating yet so divergent thinking is preserved.
- Drill into each branch with iterative questioning: for each cause raised, ask why it might have occurred until the team reaches a contributing factor that can be verified with data, photos, records or observation rather than opinion.
- Rank and shortlist the highest-likelihood causes: review every populated branch, mark the causes the team believes most plausible based on the evidence available, and circle the top three to five for verification by independent owners.
- Verify shortlisted causes against the available evidence: assign owners to gather process data, maintenance records, training records, calibration certificates and witness statements that confirm or rule out each shortlisted cause within a defined timeframe.
- Translate verified causes into a corrective action plan: link the confirmed root causes into a separate corrective action form with assigned owners, due dates and effectiveness verification criteria so the analysis converts into measurable improvement.
In MapTrack, you can schedule and track maintenance digitally. Each submission is stored as a timestamped PDF against the asset record.
Get the free templateEnter your email above to download the full fishbone diagram template as a PDF.Back to download formHow often should you complete this procedure?
A fishbone diagram is used in response to a specific problem rather than on a fixed schedule. Any significant nonconformance, equipment failure, customer complaint or safety incident where the cause is not immediately obvious should trigger a fishbone analysis as part of the corrective action process. For minor issues with a clear single cause, a 5 Whys analysis is faster. For complex problems with multiple contributing factors, the fishbone method is the better starting point.\n\nOrganisations running a mature continual improvement programme typically conduct several fishbone sessions per month across quality, maintenance and operational improvement. A quarterly review of completed fishbone diagrams alongside the corrective action register helps identify recurring themes across investigations, which often points to systemic gaps in training, procedures or asset reliability. Linking each fishbone to a nonconformance or work order record in MapTrack makes that trend analysis straightforward and audit-defensible at management review.
Frequently asked questions
Applicable regulatory standards
This template aligns with the following regulations and standards:
- ISO 9001:2015 Section 10.2
- ISO 19011:2018
- AS/NZS ISO 9001:2016
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