YEC ’04 YZF-R1 User Manual

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To adjust the valve timing, use the oval holes of the standard cam sprocket.
6. Standard-lift Camshafts
Parts List
Specification
The standard valve adjustment is 105° for both intake and exhaust valves.
For valve adjustment, use the oval holes in the standard cam sprocket.
No. PART No. PART NAME Q’TY REMARKS
1 5VY-12171-80 SHAFT, CAM 1 1
2 5VY-12181-80 SHAFT, CAM 2 1
Nominal Working angle Major axis
288-7.9 288 32.9
288-7.8 288 30.8
USE THESE OVAL HOLES FOR TIMING ADJUSTMENT.
USE THESE OVAL HOLES FOR TIMING ADJUSTMENT.

YEC ’04 YZF-R1 Specifications

General

Brand	YEC
Model	’04 YZF-R1
Category	Motorcycle
Language	English