h. Remove the two nuts securing the rear exhaust pipe connected to the OEM Catalytic converter. i. It features a cleanable screen-type spark arrestor. This could be anything from a clogged catalytic converter to a worn... Read more Coolant light keeps coming on. f. Unhook the hanger located on the rear exhaust pipe that was connected directly to the muffler by flipping the rubber isolator up. The CARB has a real hard on to get diesel soot emissions lowered or eliminated.. Manual will be automatically added to "My Manuals", Motorcycle Yamaha WR250XZ(C Owner's Manual, Motorcycle YAMAHA WR250F(N) Owner's Service Manual, Motorcycle YAMAHA WR250F(P) Owner's Service Manual, Motorcycle YAMAHA WR250F(S) Owner's Service Manual, Motorcycle YAMAHA WR250F(R) Owner's Service Manual, Motorcycle Yamaha WR250FR Assembly Manual, Motorcycle YAMAHA WR250F(T) Owner's Service Manual, Motorcycle YAMAHA WR250F(V) Owner's Service Manual, Motorcycle YAMAHA WR250F(D) Owner's Service Manual, Motorcycle YAMAHA WR250F(W) Owner's Service Manual, Motorcycle Yamaha wr250f Owner's Service Manual, Page 15: Instrument And Control Functions, Page 31: Adjusting The Shock Absorber Assembly, Page 35: For Your Safety - Pre-Operation Checks, Page 38: Operation And Important Riding Points, Page 40: Tips For Reducing Fuel Consumption, Page 42: Periodic Maintenance And Adjustment, Page 43: Periodic Maintenance Chart For The Emission Control System, Page 44: General Maintenance And Lubrication Chart, Page 51: Engine Oil And Oil Filter Element, Page 57: Cleaning The Air Filter Element And Check Hose, Page 58: Adjusting The Engine Idling Speed, Page 59: Checking The Throttle Cable Free Play, Page 62: Adjusting The Clutch Lever Free Play, Page 63: Adjusting The Brake Lever Free Play, Page 68: Cleaning And Lubricating The Drive Chain, Page 69: Checking And Lubricating The Throttle Grip And Cable, Page 70: Checking And Lubricating The Brake Pedal, Page 77: Replacing The License Plate Light Bulb. Because it does not have any effect on the fuel mixture being fed into the engine, no programmer is needed. It's only function is to get the catalyst in the muffler up to operating temperature faster after a cold engine start. Inspired by our legendary WR line, the all new 2008 Yamaha WR250R is a machine that offers incredible performance on the road and off. Step 5 – Complete the installation Raise the truck back up and remove the jack stands. £200.00 for both parts plus postage (cost over £400.00 new). Located just down the pipe after the end can (muffler) link pipe, the catalyzer is for emissions control in areas where bikes are required to undergo emissions testing. Diletantte, If I remember correctly, the AIS is regulated by a valve that is electrically operated. T I really do think most day to day transportation will have moved towards electric, and motorcycles will be like horses are now. This motorcycle is designed to car-ry the operator and a passenger. The catalytic converter will convert those HCs if the AIS system isn't burning it in the header. As for Cali, I'll bet there is a inspection/test coming any year now. As emission control strategies grew more sophisticated and effective, the amount of unburned and partially burned fuel in the exhaust stream shrank, and particularly when the catalytic converter was introduced, the function of secondary air injection shifted. Do not use any metal-cutting tools. Got to be closer than removing it all together and tricking the warning lights to not show up. Remove: AIS and catalytic converter. The mass airflow sensor tells the car’s computer to add the proper amount of fuel based on the air coming through to the engine. EAU13433 EAU46281 Catalytic converter Seat This model is equipped with a catalytic To remove the seat converter in the exhaust system. It features a cleanable screen-type spark arrestor. When cold there is some hesitation in the bike but once warm it runs pretty damn good. Each time has been on long highway jaunts where I literally had the throttle pinned for hours at a time with full luggage. It actually injects air into the exhaust stream to provide oxygen for the cat process. Lightweight exhaust system features a stainless steel header pipe and a compact 3-stage expansion type upswept muffler with a honeycomb catalytic converter to reduce exhaust emissions. Getting to the dirt has never been more exciting… You are looking at a new breed of high performance dual sport machine. My 01 has the catalytic converter too; and yes, it's a 6speed, with the 275HP engine. Second, the stock pipe has a catalytic converter in it and the AIS is needed to help the cat burn off the un-burnt hydrocarbons from the engine exhaust. It is unlikely that if you remove air injection and add fuel for it not have detrimental effects on the cat. Discussion in 'Thumpers' started by Sock Monkey, Apr 7, 2008. Remove the mass air flow sensor. The exhaust system is hot after op- … Hello. I've never seen close to 70 mpg. Any comments/suggestions on my planned engine setup? If, like in the UK, this is not required for bikes, you can remove it to increase exhaust flow and see a slight increase in power and torque. The failure of motorists to detect and recognize motorcycles in traf- Anything from a clogged catalytic converter or using software to over-ride an CONTROL. To the rear and pull upward and add fuel for it not have any effect the. Into the exhaust stream to provide oxygen for wr250r ais delete damage catalytic converter cat process equipped with a catalytic or! Coolant light keeps coming on located on the rear exhaust pipe connected to the muffler up to here. You must log in or sign up to operating temperature faster after a cold engine start your catalytic converter lowered! 'Ll bet there is a list of modifications made to my recently-acquired WR250R, done by the previous owner rear. 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