While still holding the tensioner screw all the way in, pull the cam sprocket off the cam and zip-tie it to the frame as shown in the third picture below. Other than that I've done nothing to it. Run it on flat track teally close to 100. After the cam sprocket is secured to the frame, you can now slowly back the cam chain tensioner screw out to put tension back on the cam chain. Pull the three rear plastics tabs out of the rubber grommets. Then, pull the heat shroud up and off of the frame while carefully maneuvering it out from under the wires.
. When breaking the cam sprocket bolts loose, you will need to keep the cam sprocket from turning. Additionally, before installing any new shims, coat them with oil; do not put a dry shim into the engine. Slide the feeler gauge under each of the two cam lobes, you are feeling for the clearance between the cam lobe, and the bucket under the cam lobe. Install the cover paying special attention to the area around the spark plug housing. This means the engine is now at top dead center, and you are ready to check your clearances.
Since you'll be drain fuel from the fuel line make sure you are working in a well ventilated area that is void of any ignition source. Honda's first sponsored rider on the new 450r would be. Why am I having poor performance at low and idle speed? Allow the loc-tite to set at least 20 minutes to before starting the quad. Time to adjust the clearance! Step 4: Remove the gas tank from the quad by completing the following tasks: Pull the gas cap breather hose out from inside the steering stem hole first picture below, circled in green. Whats causing my week performance at high top speed? Re-measure the valve clearances as outlined in step 8 , and record the measurements.
The valve clearance should be 0. Honda fitted the rear wheels with size 20 by 10-9 knobby radial tires and 220 mm single disc brakes. Example: If the intake valve clearance spec for your cam is. Grab a cold drink, and pat yourself on the back for a job well done! The 450R would also compete in the series although Honda would not sponsor any riders. Place the heat shroud aside.
Adjusting your own valves is within the capabilities of anyone with basic mechanical knowledge. After Download is complete you can save it to your download folder to view it, save it, and print pages whenever you need it. With the transmission in neutral slowly rotate the motor counter-clockwise. The 450R would be the first factory sponsored bike out of any of the other atv manufacturers. Now you should be able to remove the heat protector from the frame. With the plastic out of the way it's time to remove the fuel tank. After setting the crankshaft marks correctly, ensure the timing marks on the cam assembly and cam chain sprocket are aligned properly second picture below, circled in red.
Step 3: Remove the rear plastics from the quad by completing the following tasks: Pull the kick start lever out into the starting position so the plastics will clear it when they are removed. Use a 17mm socket on the crankshaft and rotate the engine, while watching the intake valves. Time for the front fenders to come off. Torque the valve cover bolts to 7 lb-ft. Maintenance schedule, Fuel Line, Throttle Operation, Air cleaner, spark Plug, Spark Plugs, Valve Clearance, Decompressor System, Engine Oil, Engine Oil Filter, Transmission Oil, Engine Idle Speed, Radiator Coolant, Cooling System, Drive Chain, Drive Chain Slider, Brake Fluid, Brake Pads Wear, Brake Light, brake System, Skid Plate, Engine guard, Clutch System, Suspension, Spark Arrester, Nuts, Bolts, Fasteners, Wheels, Tires, Steering Head Bearing, Steering Shaft Holder Bearing, steering System and more. Step 8: Before checking your valve clearances, its recommended to find out what the clearance specifications are for the cam you are using.
How do i set the Ignition Timing? Put the rest of the machine back together by reversing the steps. I have took it from factory to a top noth reace bike. I have ridden this thing all over the midwest in sand dunes, on tracks, in the mud and now because I live in Colorado, on some brutal rocky trails. Reverse step 9 to install the cam carrier and cam sprocket. This ensures that the motor is on the compression stroke.
To find out what your cam's clearance specs are, contact the cam manufacturer or your engine builder. The easiest method, is to use a digital caliper to measure the shim thickness as shown in the second picture below. Still I wonder if I could ever make it to the pro's to ride with dee other sports! Reinstall the valve cover and make sure the gasket is properly seated. The rear suspension utilized an adjustable Pro-Link configuration and a single Showa shock that could travel 9. The 450R was off to a good start even before its public launch.
Extending the swing arm will affect the front end. With a clear view of the cylinder head, it's time to get down to business. At this point, it is recommended to re-check your valve clearances to ensure all of the measurements and calculations were accurate. Shimming will be handled in a how-to in the future. After tightening the lock nut recheck the valve clearance to make sure the adjusting screw didn't move. Use a flat screw driver to pop the inner push tabs up, then use the screw driver to pry the entire tab out of the frame and plastic shroud. Step 11: Now that your shim sizes have been adjusted, record the shim sizes for each valve for future valve adjustments.