You have at least three choices: 1) Do away with the fan entirely. This will wear out your battery in a short amount of time. Which is supposed to control whether the fan is on or not. The Riva 180 uses an electric fan in the engine area toĬool the carb (probably to help prevent vapor lock). Cut off a ~1" piece and epoxy it in place for a permament fix. Remember the exact diameter so you will have to measure the bit of brass To buy a brass tube, available in a 1 foot length at your local hobby store. It's pretty common that this plastic fitting will break off. The hose hooks into the nipple thatįaces downward. Solenoid is the one that has two nipples instead of one. This hooks into the of the MA solenoid nipples. (the big circle at the back of the carb) on the lower left side. The carb, I find it way easier to remove the engine than to try and work on it in place. With practice the engine can be removed in less than 15 minutes.
Want to know how to hook up all of those Riva 180 carb hoses? Carburetor hose routing diagram Want to remove your engine? See the above link ( Starting problems with the Riva 180)įor more information and diagrams. Cracks in the plastic BCV fittings or cracks in the many vacuum lines.Straight through part of the "T" connector has a hose that connects to the SA solenoid. This jet is in the 90 degreeĪngle of the "T" connector, with a short hose attached to it that is vented to the atmosphere. Clogged starting air jet 2 (called SAJ 2 in the service manual).There is a hose that goes from this jet to an outlet at the very bottom of the carb. Clogged starting air jet 1 (called SAJ 1 in the service manual).If this is the case, it's time for a ring & valve job. Low engine compression (below 125 psi).The spark can gradually get weaker as the ignitor ages, or it
Width X height, plus the right orientation of the + / - terminals and the drain tube). I'm still looking for a 12 amp battery with the correct configuration (length X You also won't be able to use the stock battery tie-down strap, but don't worry there is no way It's a little tall, but you should be able to get the seat to close if you remove the foam under the You can also replace the stock 10 amp battery with a 12 amp or even a 14 amp (YB14L-B2) battery.
You can still get quite a few manuals direct from Yamaha! The Owner's Manuals are $30 and the Service Manuals are $60.
Owner's Manual/Service Manual part numbers LB50P Chappy YW50A Zuma CV80 Riva LB80 Chappy XC125 Riva 125 XC180 Riva 180 XC200 Riva 200 QT50 Yamahopper/MJ50J Towny/LC50 Champ CA50 Riva CV50 Riva CW50 Zuma SH50 Razz CG50 / CE50 Jog I got these from the factory service manuals This info is far from complete.I'm having a hard time finding it Brochures Check out these scans of the original Yamaha sales brochures