Yamaha Motorcycles - Page 7 - Recent Questions, Troubleshooting & Support

I have a similar issue. When I decel. A sorta grinding takes place in the gear box..but only when I have a rider with me. Tho. I only weigh 150lbs.and when it's just me. All is well. Except for a ticking every so often and I only feel it in my left foot peddle and gear shifter. But when riding a passenger upon decelleration withe the clutch not pressed it's a rough grinding sound. Any body know why

Left Signal is the orange wire !! We Are Here To Help !! Donald Deane MCSE,MASTER ASE,CPO

It should be possible to test the pump for proper function - there should be no need to replace it hoping for a cure. A fuel pump should suck at one end and blow at the other and this can be measured using appropriate gauges and if those measurements are satisfactory the amount of fuel pumped can be measured... Such tests are fairly routine on wheeled vehicles and not only are they a valuable aid to correct diagnosis they remove all doubt when warranty work is involved.

The Fz400r is a motorcycle engine produced by Yamaha. To set the timing mark on the Fz400r, follow these steps:

1. Remove the side cover from the engine to expose the timing mark.
2. Locate the timing mark on the rotor, which is a small line or notch on the outer edge of the rotor.
3. Use a timing light to align the timing mark on the rotor with the "T" mark on the stator.
4. Loosen the bolts that secure the stator plate in place.
5. Adjust the position of the stator plate until the timing mark on the rotor is aligned with the "T" mark on the stator.
6. Tighten the bolts that secure the stator plate in place.
7. Reattach the side cover to the engine.

It's important to consult the Fz400r's service manual for detailed instructions on setting the timing mark and to ensure proper timing of the engine.

This could be an error in the coolant temperature sensor's reading or it might be a sign of a more serious issue with the cooling system, like a coolant leak or a clogged radiator. You might need to bring the scooter to a repair shop to be examined.

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Yes it is a speed sensor issue, but that is normally nothing to do with the speedometer if it has a cable. The speed sensor is part of the electronic engine management system which is why the Scooter lost power. Here is your Service Manual. Use CTRL+F and type 'speed sensor', and press Enter. 15 mentions of it. https://www.49ccscoot.com/manuals/Yamaha_C3_Service_Manual.pdf Location (not a detailed as I would have hoped) https://www.google.com/search?q=2007+yamaha+c3+speed+sensor+location This suggests the battery may not be fully charged https://www.justanswer.com/motorcycle/5om11-2007-yamaha-c3-scooter-getting-error-code.html ..

Question edited for clarity, add Maker.Question moved from Cars and Trucks.You may have burned out the seals on the fuel pump. Test for operation and pressure. Holy Moly. $666 for the OEM part!https://www.yamahapartshouse.com/oemparts/a/yam/50044da5f8700209bc791381/fuel-tankhttps://www.google.com/search?q=2003+R1+fuel+pump..

Sounds like you are not getting fire to that cylinder,check plug wire,plug,and the cap on the end of the plug wire.

If all is well with those,just let me know and we can go to the next possible cause.

In this link, but it is better to specify the part you want the torque for. https://www.google.com/search?q=torques+specs+for+a+2004%2F5+Yamaha+G22+golf+cart ..

A motorcycle that turns over but doesn't start can be caused by a few different things. Some possible causes of the issue you are experiencing with your 2008 Yamaha V Star include:

1. Fuel supply problem: If the fuel pump is not working properly or the fuel filter is clogged, it can prevent fuel from reaching the engine.
2. Ignition system problem: If there is no spark at the coil packs, it could be due to a malfunctioning ignition module, a bad spark plug, or a problem with the ignition coil.
3. Mechanical issue: If the engine is not getting compression, it could be due to a valve problem, a broken timing chain, or a seized piston.
4. Electrical issue: If the engine is not getting power, it could be due to a dead battery, a corroded connection, or a problem with the starter.

It's best to check the battery and all the electrical connections first, also check if the spark plugs are fouled or damaged, if so change them

i assume its automatic transmission-so check the trans fluid level & top up if necessary

It is likely that there is an issue with the cruise control system on your Yamaha Royal Star Venture. Without more information about the specific symptoms and troubleshooting steps that you have already taken, it is difficult to provide a specific diagnosis. Some possible causes of cruise control not working on a motorcycle could include a malfunctioning cruise control module, a problem with the throttle position sensor, or a failure in the wiring or connections related to the cruise control system.

You need a wiring diagram or service manual to check the way the circuit runs and whether it earths via the points or earths via the coil. The way the spark works is that the coil is energized all the time the ignition is on and the spark is created when the the points *break* the contacts. You will only have power at the points with the ignition on and only on one side with the points open. Various resources in the link, but none that I am willing to register for. https://www.google.com/search?q=1971+yamaha+dt250+ignition+wiring+diagram ..

Question edited for clarity and MAKER! Question moved from Cars and Trucks to model category. Stated fuel consumption figures by the maker are seldom correct. You are driving in traffic and even changing gears! Figures are often given driving on the highway in top gear at 50 mph for 50 miles. When they say mixed driving, that is 5 miles to get to the highway and 45 miles on the highway. As long as the bike is running right, your tyres are at the right pressure, your brakes aren't binding and your spark plugs are a nice honey colour and not Black, fuel consumption is what it is. If you are 300 pounds, that will reduce consumption really badly. https://www.fuelly.com/motorcycle/yamaha/mt-03 https://www.google.com/search?q=Yamaha+MT-03+660cc+Fuel+Consumption ..

Question edited for clarity. Badly adjusted clutch. Incorrectly fitted clutch. Sticky plates, did you oil them? https://www.google.com/search?q=2012+Yamaha+V+Star+950.+I+installed+new+clutch+on+it+and+now+the+clutch+will+not+disengage ..

change the seal behind the water pump impeller
the shifter shaft seal will stop leaking
if it continues to mix water and oil you will have to change the head gasket

This has some information, but not as much as I would like https://www.google.com/search?q=2009+Yamaha+Raider+speedometer+wiring+diagram However, the Service Manual is here. Page 412 is what you want. https://www.mediafire.com/?ekm1dodyyin ..