2Flights

After synchronizing the carb’s within 10 mmHg (each column) using the Carbtune Pro (at an idle between 1,000 – 1,100 RPM) on a 2006 RSTD the engine idle then randomly fluctuates between 730 and 1750 RPM’s. Obviously, when this change in idle speed occurs the previous adjustment (in vacuum) to match all columns exceeds 10mmHg. You can adjust the idle adjust screw to change the engine idle speed but this adjustment does nothing to stop the idle speed from randomly changing. What could be causing this to occur? Thanks 2 Flights

Shock absorber – Check pressure or add air pressure, How to? I have a 2006 RSTD which I have never bothered to check the shock absorber pressure until this week. Using an automobile tire pressure gauge it registered 0 PSI pressure. Is this something for a DIY person to do or should this be done by the Yamaha dealership? Can a bicycle tire pump be used to increase the pressure to the shock absorber? I understand it is a low pressure unit and excceding the maximum pressure can result in damaged “O” ring seals. Thanks. 2 Flights

Ignition timing – Check the timing and/or adjust, How to? Since I am in the process of doing some maintenance on my 06 RSTD (sync of carbs, installation of new plugs, oil change, lubrication etc, I thought I should also check or adjust the ignition timing. What are the procedures / guidance for doing this work? Where is the fuel filter located on the 06 RSTD motorcycle and how difficult is it to change this filter since I will have the fuel tank removed during this work. Are there any kits available for making this task any easier in the future? Thanks 2 Flights

Hello, I just purchased the Morgan Carbtune Pro and will soon attempt (first) to synchronize the carburetors on my 2006 RSTD which has almost 8,00 miles and is experienced some occasional back fire and pops on deceleration. Before attempting this work I need to clear up some confusion about doing this work. Thanks Subject: Seeking Clarification Reference: Article on Synchronizing the Carburetors. (RS Venture and 2006 – Royal Star Tour Deluxe) In this article (page 5) of the text under the lower picture you write, you’ll want to adjust 1 and 2 on the left side and 3 and 4 on the right side of the bike (again when sitting on the seat). These adjustments are made with a #2 Phillips screwdriver from the right side of the bike. My comment…aren’t the adjustment to carb’s 1 and 2 made from the right side of the bike looking through the V of the engine to the left bank of carburetors. Isn’t the same adjustment to carb’s 3 and 4 made in a similar way from the left side of the bike (not right side) looking through the V of the engine to the right bank of carburetors using the long #2 Phillips screwdriver? In the picture (top – page 7) where the text indicates [Here is the screw for synching both sides together]. It is accessed from the left side, just above the choke knob. This is a hex head screw with a slot for a screwdriver. On my 06 RSTD this screw is located on the right side of the bike or am I confused on the location of these adjustment screws and their physical location. Thanks for your input.

Idle speed adjustment – RPM’s (2006 RSTD) I am seeking guidance on the correct procedure to check/adjust engine idle speed before doing a carburetor synchronization on my “06” RSTD. What specific equipment is needed (timing light with RPM feature, etc.) to properly set the idle speed? I have downloaded the file (Free bird) from this site (Tech Library) for doing this carburetor synchronization. Specific instructions are appreciated. There is nothing like avoiding the pitfalls of life in motorcycle care and maintenance with sharing the wisdom of others who have been there and successfully done that. Thanks 2Flights

Carburetor fuel leak. I have an intermittent or random fuel leak (R/S) from carburetor, #3 or #4 air vent hose on a 2006 Yamaha RSTD. Sometimes I can ride for 50 miles before it leaks and other time less than 7 miles. I have tried a can of Sea Foam without success. At idle there has never been a fuel leak problem… only occurs at road speed. The Yamaha owner’s manual indicates the carbs are Mikuni type BDSR32 X4. I have been unable to locate any information on these units on the Internet. What do these numbers mean and how do I find out the type of carburetors I have on this motorcycle. Any suggestions to solve this “nagging” fuel leak problem without removing the carburetors (a last resort) would be appreciated. Thanks – 2 Flights