Dedicated Subsystem WorkbenchPlatform Gen: 2019–2025

2023 Yamaha YZ250F Charging System, Stator AC Output & Battery Health

Stator 3-phase AC voltage at 5,000 RPM, coil resistance, regulated DC voltage, battery code HY85S, CCA rating, and multimeter charging diagnostic steps for 2023 Yamaha YZ250F.

Technical PassportOEM VERIFIED

Engine

250cc

Cooling

Not Available

Final Drive

520 Chain

Engine Oil

0.75 L (0.79 US qt)

Spark Plug

NGK LMAR9E-J

Front Tire

80/100-21 51M

Gen 2019–2025

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2019 through 2025.

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 2023 Yamaha YZ250F.

Configure Service Bundles→

Select Model Year:(Active: 2023)
7 Production Years (2019–2025)

2019 2020 2021 2022 2023 2024 2025

3-Phase Charging System & Battery Diagnostic Flowchart

Yuasa & OEM Standards

Multimeter troubleshooting protocols, cold cranking amps (CCA) ratings, 3-phase stator AC outputs, and regulator-rectifier health verification.

Shop HY85S Batteries

OEM Battery Code

HY85S (LiFePO4 (Lithium Iron Phosphate))

Cold Cranking Rating

120 CCA

Capacity (10HR Rate)

2 Ah (12V)

Regulated Output Spec

14.0V – 14.4V DC @ 5,000 RPM

Key-OFF Parasitic Limit

< 1.0 mA

Enter Multimeter DC Voltage Reading

V DC

Multimeter Test Diagnosis

Enter your multimeter terminal reading on the left to view instant diagnostic interpretations and recommended workshop actions.

OEM Factory AGM BatteryOEM Replacement

Dimensions: 113mm L x 70mm W x 85mm H • Weight: Not Available. Pre-filled absorbed glass mat technology engineered for heavy vibration resistance.

Lithium LiFePO4 UpgradeUp to 70% Lighter

OEM Equipped LiFePO4

Features built-in RE-START jump starting reserve. Never stranded by dead lights: press the restart button on the top terminal to crank the motorcycle without jumper cables.

Smart Maintainer SpecBattery Life Extension

Standard Charge Rate: 1.0A Max (Dedicated LiFePO4 Charger Only). Automated desulfation & float maintenance ensures full capacity retention during off-season winter storage.

Recommended Parts: •

Shop Smart Battery Chargers Find Direct-Fit Batteries

Yamaha Diagnostic Fault Codes & Multimeter Bench Testing

FI & OBD2 Decoder

Authentic factory ECU fault codes, sensor resistance specifications, and harness pinout troubleshooting.

Launch Full Yamaha DTC Engine→

Code 12Crankshaft Position Sensor

No normal signal received from CPS during cranking.

Test: Measure 245-570 Ω across CPS harness pins.

Code 30Lean Angle Sensor

Overturned signal detected. Fuel pump & ignition latch cut off.

Test: 0.4-1.4V upright; 3.7-4.4V tilted > 65°.

Code 46System Power Supply

Abnormal charging system voltage to FI ECU.

Test: 14.0-14.8V at battery (5,000 RPM); Stator 0.15-0.25 Ω pin-to-pin.

Looking for other error codes, sensor pinouts, or OBD2/Euro 5 codes?

View All 68 Multi-Brand Diagnostic Trouble Codes →

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 2023 Yamaha YZ250F platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.