Section 03 787 RFI ENGINE
Subsection 03 (TOP END)
MAINTENANCE
There are no wear parts anywhere in the system
and there are no adjustments to be periodical-
ly checked. The only possible maintenance re-
quired would be cleaning of carbon deposits from
the guillotine slide. Cleaning intervals would de-
pend 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 recom-
mended 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 guillo-
tine 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 engine. 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 operat-
ing 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
Loosen Allen screws
no. 26
each side of RAVE
valve.
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 com-
pression spring inside the valve is applying
pressure against the cover.
F06D0RA
1
1. Spring
Remove the compression spring
no. 19
.
74
smr2005-082
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