Dedicated Subsystem WorkbenchPlatform Gen: 2018–2026

2021 Yamaha XMAX 300 (CZR300) Valve Clearance Specs & Shim Calculator

Cold valve clearance specs for 2021 Yamaha XMAX 300 (CZR300): intake mm, exhaust mm, inspection intervals and replacement shim calculator.

Technical PassportOEM VERIFIED

Engine

292cc

Cooling

Liquid-Cooled with Front High-Efficiency Radiator & Electric Fan

Final Drive

Belt Drive

Engine Oil

1.70 L (1.80 US qt) [1.50 L periodic oil change without filter]

Spark Plug

NGK LMAR8A-9

Front Tire

120/70-15 M/C 56P

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Gen 2018–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2018 through 2026.

Select Model Year:(Active: 2021)
9 Production Years (2018–2026)

2018 2019 2020 2021 2022 2023 2024 2025 2026

Suggested Items4 Verified Workshop Consumables Available for this Job

View Suggested Items ↓

Official NHTSA Safety Recalls & Technical Bulletins

2 Active Campaigns

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

Verify VIN on NHTSA.gov

The U.S. National Highway Traffic Safety Administration reports 2 safety recall campaigns associated with this platform. Independent repair shops and riders should confirm that authorized dealership warranty remedies have been applied.

NHTSA #ENGINE AND ENGINE COOLING:ENGINE

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Defect Description

Yamaha Motor Corporation, USA is recalling certain 2024-2025 CZR300 (XMAX 300) scooters. The camshaft retainer bolt may not have been tightened properly, which can allow the bolt to loosen and back out.

Safety Hazard / Consequence

A loose camshaft retainer bolt can cause abnormal engine noise, timing misalignment, loss of power, or engine stall while riding, increasing the risk of a crash.

Factory Remedy & Repair Action

Dealers will inspect the camshaft retainer bolt and tighten or replace it as necessary to the 10 N·m specification with threadlocker, free of charge.

Manufacturer Notes: NHTSA Campaign 25V-778; owner notifications initiated in late 2024.

NHTSA #VISIBILITY:REFLEX REFLECTOR

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OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

1 Documented Bulletin

Bulletin #FSB-YAM-XMX-01Safety Recall Bulletin FSB-YAM-XMX-01 / NHTSA 25V-778: Camshaft Retainer Bolt Security Verification, Blue Core Valve Clearances & CVT High-Torque Sheave Service

Source: Yamaha_XMAX300_NHTSA_25V778_Camshaft_Bolt_Service.pdf

Mandated Torques:Torque: 10 N·m (88 in-lb) (Camshaft Retainer Plate Hex Bolt - NHTSA 25V-778)Torque: 115 N·m (85 lb-ft) (Primary Fixed Sheave Nut)Torque: 80 N·m (59 lb-ft) (Secondary Driven Clutch Sheave Nut)Torque: 20 N·m (15 lb-ft) (Engine Oil Drain Bolt - 12mm Hex)

Consumable Specs:ThreeBond 1342 or Loctite 243 Blue ThreadlockerYamalube 4 10W-40 4-Stroke OilCylinder Head Side Cover O-Ring

Genuine Part Numbers:95812-06012-00B74-E7641-00-00B74-E7632-00-0093210-71462-00

NHTSA Safety Recall 25V-778Yamaha XMAX 300 Blue Core

Yamaha XMAX 300 Camshaft Retainer Bolt (NHTSA 25V-778) & Blue Core Top-End Architecture

Camshaft retainer bolt safety torque 10 N·m, valve lash IN: 0.08–0.12mm / EX: 0.22–0.26mm, primary sheave 115 N·m, and secondary sheave 80 N·m.

Click on Camshaft Retainer Bolt (NHTSA 25V-778), Cold Valve Lash, Primary Sheave Nut, or Secondary Sheave to view torque values and technical remedy instructions.