Dedicated Subsystem WorkbenchPlatform Gen: 2021–2026

sms%3A6572176457 Honda Rebel 1100 (CMX1100) Valve Clearance Specs & Shim Calculator

Cold valve clearance specs for sms%3A6572176457 Honda Rebel 1100 (CMX1100): intake mm, exhaust mm, inspection intervals and replacement shim calculator.

Technical PassportOEM VERIFIED

Engine

1084cc

Cooling

Liquid-Cooled

Final Drive

525 Chain

Engine Oil

3.90 L (4.12 US qt)

Spark Plug

NGK SILMAR8A9S

Front Tire

130/70-18

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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.

Select Model Year:(Active: sms%3A6572176457)
6 Production Years (2021–2026)

2021 2022 2023 2024 2025 2026

Suggested Items4 Verified Workshop Consumables Available for this Job

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Factory Valve Clearance & Shim Calculator

OEM Workshop Tolerances

Cylinder head valve lash specifications, timing TDC mark alignments, and interactive replacement shim calculation engine.

Adjustment Mechanism: 9.48 mm

Active Valve Range (INTAKE)

0.12 - 0.20 mm

0.005 - 0.008 in

Nominal Mid-Spec Target

0.16 mm

Ideal cold lash assembly setting

Shim Diameter / Tappet

9.48 mm

Bucket-and-shim interface

Measurement Condition

Cold Engine (≤ 35°C / 95°F)

TDC compression stroke only

Interactive Shim Sizing Calculation Engine: New Shim = Current Shim + (Measured Clearance - Target Clearance)

1. Feeler Gauge Measured Clearance (mm)

Factory intake tolerance: 0.12 - 0.20 mm

2. Currently Installed Shim (mm)

Measured with micrometer or read laser-etched face

TDC Crankshaft Timing Index

Align crankshaft TDC mark with engine timing index pointer

Feeler Gauge Technique

Angled blade feeler gauge (cold engine ≤ 35°C / 95°F)

Official NHTSA Safety Recalls & Technical Bulletins

1 Active Campaign

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 1 safety recall campaign associated with this platform. Independent repair shops and riders should confirm that authorized dealership warranty remedies have been applied.

NHTSA #21V987000ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY

Received: 16/12/2021▼

Defect Description

Honda (American Honda Motor Co.) is recalling certain 2021 Honda Rebel 1100 (CMX1100) motorcycles. The radiator cap may have been improperly formed during manufacturing, which could create an insufficient seal.

Safety Hazard / Consequence

An insufficiently sealed radiator cap may leak or spray hot coolant, increasing the risk of injury or crash.

Factory Remedy & Repair Action

Dealers will replace the radiator cap and refill any lost coolant, free of charge. Owner notification letters were mailed February 22, 2022. Owners may contact Honda service at 1-888-234-2138. Honda's number for this recall is KN1.

Manufacturer Notes: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

1 Documented Bulletin

Bulletin #HON-21V987Safety Recall KN1 (MTB 17798): Rebel 1100 (CMX1100) Radiator Cap Outer Hook Height Replacement

Source: Honda_Rebel1100_Recall21V987_KN1_RadiatorCap_Full.pdf

Mandated Torques:Torque: 9.8 N·m (7.2 lbf·ft) (Radiator Shroud & Neck Cover Fasteners)Torque: 1.5 N·m (1.1 lbf·ft) (Overflow Return Tube Spring Clamp Inspection)

Consumable Specs:Pro Honda HP Coolant 50/50 Prediluted (Phosphate & Silicate Free)Distilled Water Rinse Solution

Genuine Part Numbers:06190-MKR-30519045-MZ1-851

HONDA REBEL 1100 COOLING SYSTEMExploded View: Radiator Cap Sealing Interface (Safety Recall 21V-987 / KN1)

KIT # 06190-MKR-3051.1 BAR (108 kPa)

Remedy Radiator Cap (1.1 bar / 108 kPa / 16 psi)

Genuine Kit # 06190-MKR-305 (Kit, Cap Rad)

Push Down & Rotate Clockwise Until Stop Lugs Engage

CRITICAL SAFETY RECALL (Recall 21V-987 / Service Bulletin MTB 17798 / KN1). Factory die defect formed outer hook height exceeding specifications, causing the cap to ride over filler neck stops resulting in pressure loss and hot coolant spray. Replace with countermeasure cap having verified hook height.