Dedicated Subsystem WorkbenchPlatform Gen: 2021–2026

2026 Yamaha MT-09 Cylinder Compression & Leakdown Diagnostic Engine

Factory compression specs for 2026 Yamaha MT-09: standard pressure 156 - 218 PSI (1076 - 1503 kPa), service limit 142 PSI, dry vs wet test diagnostics and acoustic leak stethoscope.

Technical PassportOEM VERIFIED

Engine

890cc

Cooling

Liquid-Cooled

Final Drive

525 Chain

Engine Oil

3.40 L (3.60 US qt)

Spark Plug

NGK CPR9EA-9

Front Tire

120/70ZR17

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Gen 2021–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2021 through 2026.

SPECS-TO-CART BUNDLESFactory Direct-Fit Maintenance Bundles Available

1-Click verified Motul engine oil service kits, race filters, spark plugs, and brake fluid pre-measured for this 2026 Yamaha MT-09.

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Select Model Year:(Active: 2026)
6 Production Years (2021–2026)

2021 2022 2023 2024 2025 2026

Suggested Items4 Verified Workshop Consumables Available for this Job

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Cylinder Compression & Leakdown Diagnostic Engine

Multi-Cylinder Dry vs. Wet Test Bench, Differential Pressure Regulator & Acoustic Stethoscope Locator

Ratio: 11.5:1Std: 156-218 PSILimit: 142 PSIWhip Adapter: M10 x 1.0

Diagnostic Presets:

Cyl #1 (Left)IN-SPEC

196PSI(1351 kPa)

Cyl #2 (Center)IN-SPEC

194PSI(1338 kPa)

Cyl #3 (Right)IN-SPEC

192PSI(1324 kPa)

Cross-Cylinder Variance: Δ 4 PSI (OEM Limit: ≤ 14 PSI)

VARIANCE IN-SPEC

All cylinders demonstrate strong, balanced mechanical sealing. Piston ring packs, cylinder cross-hatch, and valve seats are within factory specification.

Official Workshop Manual Compression Test Protocol

Step 0 of 5 Completed

Step 1: Engine Operating Temperature

Run engine until coolant reaches 60°C - 80°C (140°F - 176°F). Cylinder expansion brings rings and pistons to true operating clearances.

Step 2: Spark Plug Removal & Port Clean

Blow compressed air around spark plug wells to eject grit, then remove all spark plugs. Thread in M10 x 1.0 whip adapter hand-tight with fresh O-ring.

Step 3: Wide-Open Throttle (WOT) Lock

Hold throttle grip fully wide open (or lock throttle bodies open) to eliminate intake butterfly vacuum restriction and ensure 100% volumetric cylinder filling.

Step 4: Battery Tender Voltage Stabilization

Connect a 12V shop battery tender or booster. Starter must sustain uninterrupted cranking speed (350 RPM) to build maximum dynamic stroke pressure.

Step 5: Crank 4-6 Compression Strokes

Engage starter until gauge needle ceases rising (typically 4 to 6 strokes). Record maximum peak pressure and compare against the OEM limits above.

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 2026 Yamaha MT-09 platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

2 Documented Bulletins

Bulletin #YAM-15V176Safety Recall 15V-176: FZ-09 / MT-09 / YZF-R6 Shift Cam Segment Stopper & Shift Shaft Assembly

Source: Yamaha_FZ09_MT09_R6_Recall_ShiftCamStopper.pdf

Mandated Torques:Hand-Tool Torque Mandate: Air tools strictly forbidden on YZF-R6 slipper clutch boss nut to prevent mainshaft thread strippingBlue Paint Identification Dot on shift shaft end denotes campaign completion

Consumable Specs:Yamalube 4T Engine OilLithium Soap-Based Grease for Oil Seal Lips

Genuine Part Numbers:90891-10251-001RC-18101-01-001RC-15461-00-0090891-10254-002C0-18101-02-002C0-15461-01-00

Transmission MechanismExploded View: Shift Cam Segment Stopper & Shift Shaft (Safety Recall 15V-176)

Sharp Notch vs. Smooth Radius Defect • Blue Paint Identification Dot

Click any component or inspection mark to view recall remedy specifications.

Inspection TargetRecall 15V-176

Shift Cam Segment Stopper (Sharp vs. Smooth Bend)

Kit # 90891-10251-00 (FZ09) / 90891-10254-00 (R6)

Mechanical Engineering Status:RECALL 15V-176 DEFECT LOCUS

CRITICAL RECALL DEFECT: The original factory stopper arm was stamped with an acute sharp internal notch at the bend. Under rapid gear shifts, cyclic fatigue caused catastrophic fracture at the notch. The countermeasure part features an engineered smooth radial bend that distributes stress evenly.

Interactive Assembly Nodes:

Bulletin #YAM-22V130Bulletin M2022-006R / Campaign 990158: MT-09 / Tracer 9 GT ECU Throttle Calibration & Stall Reprogramming

Source: Yamaha_MT09_Tracer9GT_Recall990158_M2022_006R_ECU.pdf

Mandated Torques:Diagnostic Communication: YDS (Yamaha Diagnostic System) high-speed CAN reflash procedureBattery Voltage Gate: Maintain constant 12.6V+ using battery tender during ECU flash

Consumable Specs:Yamaha YDS Diagnostic Interface SoftwareFactory Calibration Rom File

Genuine Part Numbers:B7N-8591A-11B7N-8591A-61BAM-8591A-11BAP-8591A-11BAP-8591A-61