The 1983-1995 Yamaha RD350 YPVS DIY repair manual by Haynes, covers all RD350 models indicated, including:

• Yamaha RD350LC II, 1983-1985
• Yamaha RD350N, 1985-1986
• Yamaha RD350N II, 1986-1987
• Yamaha RD350F, 1985-1986
• Yamaha RD350F II, 1986-1991
• Yamaha RD350R, 1992-on

Book Excerpt: 1983-1995 Yamaha RD350 YPVS Repair Manual FUEL SYSTEM AND LUBRICATION

AIR CLEANER: REMOVAL AND CLEANING

1. The air cleaner casing is mounted on the frame beneath the fuel tank. It is connected to a second molded plastic chamber immediately behind the carburetors. This functions as an intake silencer and conveys the cleaned air to the carburetor intakes via short rubber adaptors.
2. Access to the air cleaner element requires the removal of the fuel tank and seat. The seat can be lifted clear once its retaining latches have been released. Turn the fuel tap to the "ON" or "RES" position and disconnect the fuel feed pipes. Remove the single fixing bolt at the rear of the tank and lift the tank upward and rearwards to free it from its front mounting rubbers.
3. The air cleaner cover is retained by three screws. Remove the screws and lift the cover clear to expose the flat foam element. This can be removed in turn by pulling it out of the casing. Wash the element in clean gasoline to remove the old oil and any dust which has been trapped by it. When it is clean, wrap it in a clean rag and gently squeeze out the remaining gasoline. The element should now be left for awhile to allow any residual gasoline to evaporate. Soak the cleaned element in engine oil and then squeeze out any excess to leave the foam damp but not dripping. Refit the element, ensuring that the cover seal has been refitted.
4. Note that a damaged element must be replaced immediately. Apart from the risk of damage from ingested dust, the holed filter will allow a much weaker mixture and may lead to overheating or seizure. It follows that the machine must never be used without the filter in position.
5. The rest of the air cleaner system requires little attention, other than checking that the connecting rubbers are undamaged. When checking these do not omit the adaptors which connect the carburetors to the inlet ports. These are prone to perishing and cracking around the balance pipe stubs and should be replaced if leakage is suspected.

FRAME AND FORKS

INSTRUMENT PANEL: REMOVAL AND REFITTING

1. The instrument panel forms a self-contained unit and is attached to the headlight brackets via rubber-mounted bolts. On the RD350F model, the assembly is bolted to the fairing subframe. The panel can be removed after the relevant wiring and instrument drive cables have been disconnected; this will be self-explanatory upon examination.
2. The speedometer on all models is mechanically driven via a flexible cable from the front wheel drive gearbox. In the event of a fault, always check the cable first. If the instrument head is at fault, it will be necessary to fit a new one, unless a specialist repairer can help.
3. The tachometer on the RD350 LC II is mechanically driven from a take-off point near the rear of the crankcase, and can be dealt with in the same way as the speedometer. On all other models the tachometer is electronic, measuring engine speed by monitoring the ignition pulses.

Subject: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 Yamaha RD350 YPVS service, maintenance, repair. ISBN-10: 185010879X | ISBN-13: 9781850108795 | Haynes 1158