717 Engines

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Section 04 ENGINE (2-STROKE) Subsection 04 (TOP END) 3 1 F12D04A RAVE VALVE OPENED 1. Pressure from air compressor 2. Solenoid activated 3. Pressure to solenoid 4. Pressure to RAVE valves 3 1 F12D05A RAVE VALVE CLOSED 1. Pressure from air compressor 2. Solenoid deactivated 3. Pressure to solenoid 4. Pressure to RAVE valves blocked by the solenoid 5. Vent to air intake silencer 6. Check valve 7. Counterbalancing shaft oil cavity vent 4 4 6 2 2 7 5 MAINTENANCE There are no wear parts anywhere in the system and there are no adjustments to be periodically checked. The only possible maintenance required would be cleaning of carbon deposits from the guillotine slide. Cleaning intervals would depend upon the user's riding style and the quality of the oil used. We suggest annual cleaning of the valve. If a customer uses a lower than recommended quality oil, more frequent cleaning may be required. No special solvents or cleaners are required when cleaning the valve. BORING PRECAUTION In its stock configuration the RAVE valve guillotine has a minimum of 0.5 mm (.020 in) clearance to the cylinder bore measured at the center line of the cylinder. This is the minimum production clearance. There is only a first oversize piston available for the 787 RFI and 947 DI engines. That piston is 0.25 mm (.010 in) larger in diameter than the stock piston. When the oversize is installed, the guillotine will have a minimum clearance of 0.375 mm (.015 in) with the cylinder bore. This is the minimum operating clearance the guillotine should be used with. Clearance less than 0.375 mm (.015 in) will require reworking of the guillotine to achieve the proper clearance and radius. DISASSEMBLY RAVE Valve 787 RFI <strong>Engines</strong> Loosen Allen screws no. 26 each side of RAVE valve. 104 smr2004-Complete Line Up 6
F06D0QA 1 1. Remove screws Remove RAVE valve no. 15. Remove the cover no. 18 of the valve by releasing the spring no. 16. WARNING Firmly hold cover to valve base. The compression spring inside the valve is applying pressure against the cover. F06D0RA 1 1. Spring Remove the compression spring no. 19. F06D25A Section 04 ENGINE (2-STROKE) Subsection 04 (TOP END) 1 1. Remove spring 787 RFI <strong>Engines</strong> Remove spring no. 30 retaining bellows no. 21 to valve piston no. 20. F06D0SA 1 1. Spring Free bellows no. 21 from valve piston no. 20. smr2004-Complete Line Up 105 7
Page 1 and 2: TOP END 717 Engines Molykote 111 F1
Page 3 and 4: 947 DI Engines 26 10 N•m (89 lbf
Page 5: 2 3 1 F06D16B RAVE VALVE CLOSED 1.
Page 9 and 10: F06D28A 1. Remove O-ring 1 Remove s
Page 11 and 12: Remove cylinder head no. 2. If shel
Page 13 and 14: F00B0KA 1 1. Tool cut-out toward bo
Page 15 and 16: A F01D8AA 2 1. Measuring perpendicu
Page 17 and 18: F00B09A 2 1. Use the micrometer to
Page 19 and 20: F01D8KA 1 3 2 1. Sliding valve 2. O
Page 21 and 22: - Replace the inner halves by the a
Page 23 and 24: 947 DI Engines Securecirclipinpisto
Page 25 and 26: F01D45A 717 ENGINES 1. Aligning cyl
Page 27 and 28: Apply Molykote 111 on threads of cy
Page 29 and 30: Compare the obtained value with the
Page 31 and 32: Section 04 ENGINE (2-STROKE) Subsec
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Section 04 ENGINE (2-STROKE) Subsec
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
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717 Engines

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