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Yamaha ET 1250

I just wanted to know whether it's engine is that of two stroke or four?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 197 Answers

SOURCE: how do i re-shim my 07 yamaha yz250f?

you should hav check the valve spec before taking off the head. now you have to reassemble it to check it. see if your over or under adn replace with the appropriate shims.

Posted on Oct 22, 2009

  • 123 Answers

SOURCE: explain the four stroke cycleof a three cylinder

It is the same as any other engine no matter how many cylinders there are. . A 4 stroke engine has the intake stroke then compression then ignition then exhaust.(piston goes down for intake stroke,then up for compression then it fires the fuel air mixture from the intake stroke and that pushes the piston back down and on its way back up the exhaust valve opens for the exhaust stroke)

Posted on Nov 18, 2009

  • 85 Answers

SOURCE: yamaha 225 four stroke overheating

If the engine wasn't overheating before the thermostat was replaced it could be a problem with the installation or possibly the coolant levels weren't refilled enough or at all, also if the leg was rebuilt their may be a problem with the way it was done and the engine is now working too hard to turn the prop although I think that this is unlikely. First thing is to check the coolant levels and if they are fine then you need to ensure that the water pump is circulating the coolant. If both of those check out fine then I would think that the thermostat installation is suspect and should be checked.

Posted on Dec 04, 2009

  • 7 Answers

SOURCE: wont start

also check the jetting is set properly for weather ect, check for flooding, as mentioned check vavle clearance, also fiddle with the idle knob and fuel mixture screw(this is annoying to get to as its under the carb) and im asuming you already know the starting procedure for the 426.

Posted on Apr 04, 2010

GodBlessU
  • 3513 Answers

SOURCE: I want to find the

Hi,

There is as such no schematic diagram available on net for the same. You can find the details in one of the articles here:

http://www.yamahaoutboardparts.com/forum2/multifunction-guage-wiring-th3164.html

Thanks

Posted on Feb 28, 2011

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1 Answer

Model identification of Yamaha 15 four stroke


YAMAHA MODEL
YEAR GUIDE
EXAMPLE:
"F15MLHW" would
be a
Four Stroke, 15 HP,
Manual Tilt/
Manual Start, 20"
Shaft, Tiller Steer,
1998 model
THESE CODES ARE
GOOD FOR USA
MODELS ONLY
If you are outside
the USA we can
only help if you
have original
Yamaha part
numbers.
Please contact
Yamaha in your
area to buy a parts
catalog for your
motor.

Jan 27, 2013 | Boating

2 Answers

Does a yamaha 2003 atv have four stroke engine?


Do you mix oil into the gas?? Is there a place to check the oil (a dip stick). Is there a special place to put 2 cycle oil for a self mixer?

If you don't mix the gas with oil and there is no special place to put 2 cycle oil, you have a 4 cycle engine.

If there is a place on the side to check the oil level, you have a 4 cycle engine.

Next question will be ... how do I check the transmission oil? If you have a 4 cycle engine, the engine oil is also the transmission oil ... rule of thumb.

You are showing a picture of a motorcycle and asking a question about a ATV, but not mentioning a model number. I don't think Yamaha is currently making a 2 stroke engine for their ATV's (there are several sizes - not including assorted models for sale around the world ... and I don't know where you are writing from (and please don't say).

Maybe the best thing for you to do is call the Yamaha dealer on Monday morning and tell them the model you have and ask the question 2 stroke or 4 stroke. There will be no more guessing on your part then.

Make sense?

Thanks for your question @ FixYa.com

May 15, 2011 | 2006 Yamaha Warrior

1 Answer

Shift shaft is broken. Do I need to split the cases to replace it?


Whether it is a four stroke or a two stroke, If you take the right crankcase cover off you should be able to access and replace the shift shaft. The mechanism is on the opposite side of the motor from the shift lever. You may have to remove the primary gear that contains the clutch pack to get the actual shift shaft assembly to slide out. The good news is you should not have to remove the engine from the frame or split the cases to do the job.

Apr 17, 2011 | 2003 Yamaha YZ 250

1 Answer

How do i re-shim my 07 yamaha yz250f?


you should hav check the valve spec before taking off the head. now you have to reassemble it to check it. see if your over or under adn replace with the appropriate shims.

Oct 22, 2009 | 2004 Yamaha YZ 250 F

1 Answer

Would like to know the gas tank capacity for a 1996 xvz 1300 a royal star yamaha cycle, and tire size please


YAMAHA ROYAL STAR Engine Type: 1294cc liquid cooled 70 degree DOHC V-four, four valves per cylinder
Bore and Stroke: 79 x 66mm
Compression Ratio: 10.1:1
Carburetor: 4 x 28mm Mikuni CV
Transmission: 5-speed
Wheelbase: 66.7 in.
Dry Weight: 701 lbs.
Tires: Front; 150/80V16 Rear; 150/90V15
Forks: 43mm Kayaba
Rear Suspension: Kayaba mono-shock with adjustable preload
Brakes: 298mm dual front discs with dual-piston calipers; 320mm rear disc with dual-piston calipers
Seat Height: 28.3 in.
Fuel Capacity: 4.8 gallons

May 05, 2009 | 1996 Yamaha Royal Star XVZ 1300 A

2 Answers

Do i have to mix 2 stroke oil on the gas for the 4 stroke bikes or just add regular gas on the tank? if is what is the scale for the mix?


DO NOT mix oil in the gas on your four stroke engine. You will foul the spark plug(s), build up deposits on the valves and head, and make a smokey, smelly mess. A two stroke engine uses the fuel/oil mix to lubricate the engine before being used as fuel. A four stroke engine has a separate lubrication system and does not normally burn any oil. As the name implies, a two stroke engine works in two strokes. The first stroke is downward, where the fuel/oil mix and air are drawn into the cylinder. The momentum from the crankshaft counterbalance or force from the other cylinder(s) drive the piston back up compressing the mix, and the spark plug sparks at or slightly before the top of the stroke. The rapid combustion of the fuel/oil/air mix drives the piston down, which is the power stroke, and then the cycle starts all over again. A four stroke engine has an intake stroke down taking in the fuel/air mix, a compression stroke up, a power stroke down as the fuel/air mix is ignited at or before the top of the stroke, and a exhaust stroke up before starting all over again. A four stroke is much cleaner and more reliable than a two stroke, but it is heavier and has less torque. A two stroke engine is much lighter and has more torque, but takes more maintenance.

Feb 28, 2009 | 2003 Yamaha YZ 250 F

1 Answer

General


The two most important aspects of four-stroke maintenance are frequent oil/filter changes, and regular valve clearance checks/adjustments. And some four-strokes (RMZ450 for example) have a manual timing chain tensioner that must be regularly checked/adjusted. Everything else is exactly like a two-stroke.

Nov 10, 2008 | 1983 Yamaha XJ 400

1 Answer

Yamaha india


hello Sir,

It was the phase between 1990-1995, when Yahama lost to Hero Honda, as v know, Yahama was an expert in 2-stroke engine bikes, as v know 2-stroke engine will yield higher power but NO good mileage, n emit more smoke.
so...GOV OF INDIA phased out all production of 2 stoke engines in the country, so yamaha had to stop the production of Yamaha RX n RD series in INDIA.

N constantly rising fuel prize, utilizing this need form d public Hero Honda's CD 100 hit the market, with 4 stroke engine n heavily improved mileage.

hence Hero honda won the race...

Although Yamaha came up with some 4 stroke models, but those didnt click it for them, but now its again yamaha's time !!

with introuduction of Yamaha R15, FZR , really yamaha is back with a bang !!

thank u so much..!!
plz vote me/ rate me ..thank u!!

May 22, 2008 | Yamaha RX-V520

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