Question about 2004 Yamaha TW 200

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When i take the left side motor case off there's screws around the magneto on my 2004 yamaha blaster 200

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  • Douglas Hansen
    Douglas Hansen May 11, 2010

    That's nice, but what do you need to know?



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Those are the screws holding your tranny case if im imagining the same thing you are looking at.

what seems to be the problem buddy

Posted on Jul 23, 2009


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I have a Yamaha blaster 200 ,they star but a won't accelerated star a buginau

Hi, Javier and the usual suspects are:
1. Throttle cables misaligned or misrouted.
2. Damaged or restricted fuel tank venting system.
3. Inlet system air leak.
4. Vacuum piston malfunction.
5. Accelerator pump leaking or no output.
6. Plugged bowl vent.
7. Fuel level in bowl too low.
8. Restricted fuel supply passages.
9. Plugged jets or passages.
10. Worn or damaged needle or needle jet.
12. The enricher valve not seated or leaking.
For more information about your issue please visit the websites below. Good luck and have a nice day.
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Yamaha Blaster Parts Service and Owner Manuals Free Download

Jul 26, 2015 | Yamaha Motorcycles

1 Answer

Big end bearing has disintegrated. What is the easiest way to strip the motor & remove crankshaft

If it's a 2-stroke, you'll need a crank puller and a case splitting tool to get this done, the crank is press fit into the magneto side bearing. If it's a 4-stroke, no special tools are required. Always pull the clutch side case off, leaving the transmission and crank in the magneto side. It's way easier to keep the transmission organized this way. Good luck!

Jun 09, 2011 | Yamaha Renegade 200 Motorcycles

1 Answer

Like I said in my posting I replaced the whole electrial system dow to the lights. Every thing is new Yamaha OEM. I get an initial spark but nothing after that. I press the starter and in catches for a...

Hi... Problem with your bike...Let me help you.... I see you have , one spark then nothing... well I suggest to look first at your condensor and your electronics Ignition Box... Make sure your battery is full charge.. when you try to start the bike several time
it take so much current on the battery, then you dont have enough
voltage to innitiate your spark correctly to your spark plug ... if it yellowish or redish it no good, but if it blue spark it correct..
also check the voltage from the magneto see if it gave you the right volgage to the coil when you start..
the battery is use only to start the engine till the magneto take over
The right voltage it betwen 12V to 14Volts when the motor is running ...

Oct 18, 2010 | 2004 Yamaha TW 200

1 Answer

Have a1975 175 enduro, acts like needs timeing, can't figure out how to check or adjust. Got any help?

Before I explain the timing, I want you to check the crankshaft bearing on the left side, (shifter side), of the bike. Just remove the left side case cover and then hold the magneto firmly in your hand and then lift up and down then left and right. If the magneto is not rock solid you will need to install new crank bearings and seals. Any movement in the magneto means the timing will be jumping around.

Now, the timing. This bike is timed at 1.8mm BTC. Race timing is 2.0mm BTC.. You need a dial guage and an olmmeter to set it properly. Remove the spark plug then screw the dial gage mount into the spark plug hole. GENTLY run the piston towards TDC. At tdc setthe guage to zero then back the piston down, still on the compression stroke. Attach the olmmeter to the points and to ground. Run the pisten back towards TDC and set the points such that they open at the 1.8 or 2.0mm advance point. Setting the points is simply a matter of rotating the points base plate left or right as needed to achive opening at the proper piston position, 1.8 or 2.0..

There is a notch in the base plate which you can use to set the points. You can make the adjustment by loosning the base plate and useing a flat screwdriver to move the base plate. It has been 30 years since I worked on a 175 Yamaha. I dont recall if the magneto has a timing mark on it or not. I think it does. If so, the first of two marks is the timing mark. The second mark is TDC. You can start the bike then use a timing light to check the timing. Stop the engine, make an adjustment, start again and check with the timing light, etc., etc., until is is set where it should be. There will be a mark on the center case that the magneto marks will line up with if there are indeed marks on the magneto. It would probably be advisable to file the points as they may well be pitted from usage. Please rate my answer.


Sep 16, 2010 | 1974 Yamaha DT 360

1 Answer

Trouble with 2004 blaster 200 idle

simple just turn the idle screw in 1/4 of a turn mate and its done 74197ac.jpg

Sep 10, 2009 | 2004 Yamaha YZ 250 F

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Changed reed valves drained out old gas put in new gas now it won't start. It's a 2004 Yamaha Blaster

hi mate on the carb there are 2 screw one for mixture and one for idle you need to unscrew the mixture screw 1/2 of turns and see if this improves 1728936.jpg

Aug 29, 2009 | 2004 Yamaha YZ 125

2 Answers

I have a 2004 yamaha blaster 200 i need a diagram or advice on the best way to take my carb. off, throttle cable from top of carb...

i can't seem to figure out why my 2004 blaster 200 won't idle properly. i cleaned the carb and replaced the spark plug. it revs fine but when it goes down to idle it just dies. any help?

Mar 01, 2009 | 2004 Yamaha YZ 125

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