Why does a Raptor 660 have 5 valves?
5 valves (3 intake, 2 exhaust) means better breathing – more air can get into the cylinder, bringing more fuel, making more power!
How many valves does a Raptor 660 have?
five-valve
The Yamaha Raptor 660R is a sport all terrain vehicle made by Yamaha with a 660cc, single cylinder, five-valve, four-stroke engine. It is designed to perform well in every riding condition.
How much horsepower does a Raptor 660 have?
That`s nice, having on mind that stock 660 has 35 hp, the 727 gets 30 hp more.
How much horsepower does a Yamaha Raptor 660 make?
The vehicle’s horsepower is 36 hp, top speed is 74 mph, and fuel economy is 30-35 mpg (6.72-7.84 liters/100 km).
How do you adjust the valves on a Yamaha Raptor 700R?
Adjusting the Valve Clearance on a Yamaha Raptor 700R
- Loosen the lock nuts on top of the intake valves.
- Place a 0.10 mm feeler gauge between the valve rocker arm and the valve head to adjust the intake valve clearance at 0.10mm, which is the proper setting for the Yamaha Raptor 700R.
How do you adjust the intake valve on a Yamaha 660?
You can adjust both sides (in. & ex.) and the same time. As you rotate the motor watch your intake valves open and then close, the piston is now coming up to Top Dead Center (on the power stroke, of your 4 strokes). At TDC both Intake and Exhaust Valves are closed and can be adjusted at this point.
How to adjust valves on a Yahama Rhino 660?
Click to expand… First thing is .015 and .020 is way too much, you should be adjusting them in the range of .003″ intake and .005″ and make sure you set them at the proper TDC, the wrong TDC and you will be setting them at valve overlap and they will be loose…………. need help adjusting valves on 2004 yahama rhino 660.
Where are the timing marks on a Yamaha 660?
Watch the valves and when the piston is coming up on the power stroke watch as the screwdriver nears TCD. Shine a light in the timing marks hole. Mine had 3 dashes and I stopped at the center one. There’s a slot in the side of the timing plug hole that should line up with the marks.
