For specific tuning and repair data (like oil capacity or plug gaps), Webike Japan provides comprehensive Technical Specifications and Service Data for various model years (e.g., CA41A, CA45A). Key Service Data for Suzuki Let's 4 Specification Engine Type 4-stroke, Single Cylinder, Air-cooled SOHC Engine Oil Capacity 0.8 Liters Recommended Oil SAE 10W-40 Battery Code Bore x Stroke 39.0 mm × 41.8 mm Tires (Front/Rear) 80/90-10 35J Maintenance Schedule Highlights
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The Let’s 4 utilizes an Electronic Fuel Injection system. If you encounter a "Check" light or poor idling: SUZUKI LETS4: Service Manual - Webike Japan SUZUKI LETS4: Service Manual - Webike. Webike Japan LTR 450 Troubleshooting Fuel System