1978 Polaris RXL Service Manual, Page 41Get this manual
COMPON ENT FUN CTI ONS Con't )
ADJUSTMENTSJETTI NG JETTI NG ACCORDA NCE WITH ALT ITUDE
The amount of the inco ming air in relat io to meteorological co ndi ionsThe mou nt of ir rawn in to the cy linders is influenced by such factors asthe lti ude, emperature, hu midity, etcSup pose hat th amount air rawn into th cyl inders at an levat io of zero is tak en as 100 (the temperature an humidity in th is case ar cons idered co ns ta nt)The amount of ir in uest ion decreases in proportion rise in levat ion as sho wn in Chart ARedu cti on in the mount of ir drawn into the cylinders cha nges the air-fue mixture rat io, with th result ha th power ou tp ut drops mark edlyCha rt shows the relations between rise in tem pe rature and the amount of ir dr awn into th cy lindersIn this caset he at mos pher ic pressu re (elevation) nd the humidity are cons idered unchanged and he mo unt of air going into he cyl ind ers at degrees (0 degrees C) is taken as 100