Automotive Manual PDF

The basis of these notes have come from a series of website printouts I obtained over the last couple of years in my effort to understand how the Mikuni BDSR39 carburetors work on my Suzuki SV650. From these printouts, I’ve produced this document aimed at rejetting the SV carburetors yourself rather than taking your bike to a dyno shop and getting it done for you. While a dyno shop will probably produce a more accurate torque/power curve, the DIY wrench monkey will be satisfied in the knowledge that he/she has done it themselves and in doing so, has learned more about their bike as a result. Be aware that rejetting your bike on a dyno normally takes 1 – 2 days, however, doing it yourself is going to take much longer due to the number of times you have to strip down and rebuild your bike for the road tests. To makes things simpler and help you get it right, I’ve divided the rejetting procedure into steps which need to be completed in sequence or you’ll simply compound any problems that you may come across in a later process.
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This is a guide to cleaning the Mass Air Flow (MAF) sensor, infamously known to VW owners as a problem part. This problem seems to have become more widespread with the release of the Mk. IV platform, which is apparently due to a bad batch of sensors from the Bosch factory. Although most of the faulty MAFs have been weeded out after having failed on their owners, the more hardy MAFs often survive until just after the car’s warranty expires. In most cases the owner is left holding a bill for several hundred dollars for a new MAF and labor costs.
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