Torque the three nuts to 34 N-m. Periodically, disconnect the throttle, clutch and hot start cables at their upper ends. Inspect the coolant level before each outing. Adjust the pilot screw as required. Change the main jet 4 and slow jet 5 as 17. Hot starts may get especially difficult.
The cam will also have two marks on it which will line up with the top of the head. Idle Speed Adjustment The best way to assure proper carburetion is to see your Honda dealer for regularly scheduled 1. At this point, make sure the top of the engine and valve cover is very clean. Have heard no issues, have heard they are a money pit. The seats looked ok to me so I decided to lap in steel valves and replace the springs. Loosen the lock nut 1.
Remove the exhaust pipe page 90. Clean the threads of the fork protector bolts 24. Make sure the rubber sealing ring is firmly seated in the under side of the valve cover and set it back on. There's little problem with tight valves until they get too tight, then all hell breaks loose. Burns from hot motorcycle parts.
Unlike me, don't forget to remove the timing hole cap washer that you see in Figure 13 so it doesn't get lost. You can schedule service online for your Honda. Remount the fuel tank and secure with the two bolts, and reattach the fuel tank strap. Disassembly Valve clearance must be checked with the engine cold below 95 F. Rotate the primary drive gear bolt 4 crankshaft clockwise and align the punch mark 5 with the index mark 6. It seems to be just the right intake that has bottomed out, and it looks like it was the culprit leading to a shimming once before.
Gasoline is highly flammable and Never use stale or contaminated gasoline. During this period, avoid full-throttle starts and rapid acceleration. So I guess I disagree that you won't notice symptoms until it's too late. Proper valve maintenance includes checking clearance and adjusting the valves as necessary. I know people are against this route but it worked for me and was very cheap. In my case, the exhaust valve clearance was fine but the intake valve clearance was too tight.
I bought a new 04 crf 250r when they 1st came out. This same thing happened to me a few years ago when I bought a used 2005 crf450, got it home checked the valves and the same right intake wasn't in spec. Remove the carburetor page 119. I've seen alot of bikes that have no clearance on the intake valves and the owner has to bump start the bike to get it going. Use Pro Honda Foam Filter Oil or an equivalent. Then take off the the service hole on the right side of the crank case where you can turn the crank shaft with a hex bit. The problem with super high revving 4 strokes is that they have to run very heavy spring pressures to prevent valve float and these heavy springs cause the valves to be pounded into the head, which is why they need adjustment regularly.
Reattach the fuel line to the fuel valve. After the chain is measured, shift the transmission into neutral again before proceeding with inspection and service. I'm intrigued by your remark re: difficulty in syncing carbs when valve clearances are off spec. Install the spark plug page 55. Figure 18 shows the feeler inserted in the exhaust valve. The spec and mileage interval for checking is an approximation and compromise.
Adjust a little, then recheck with the 0. Again do this in steps in a crisscross pattern. Tighten the fork damper assembly 4 to the assembly 4 is in good condition. The right hole exposes the exhaust valve. Then spray on the Pro Honda Hondabrite and rinse with a garden hose at full pressure. Like Admin said, it's nice to see people taking the time to thoroughly explain things for beginners, it helps quite a bit. Subtle changes in overall handling may also be noted.
You may need to slide the bearing down the shaft a little in order to get the chain off. This results in poor performance across the entire rev range. There is a reason on why Klein Honda since 1976 has serviced over 35,000 vehicles. Remove the seat page 29. Measure the length of the lock nut 2 and 10. However, you need to make sure it's the compression stroke. Recommended Oil: Be careful not to damage the fork cap bushing Oil Level: 1.
Make sure your timing marks are lined up or use the permanent marker reference mark when you put the chain back on the cam gear. Good, that is what I wanted to hear, I picked one up that looked roached for cheap but the motor seems solid and so far I only have 200 bucks into it and it looks new now, might sell and make some money on a bike for once, thinking about selling my 450 and just playing on this though since the doc won't fix my hand issues. Calculate the race sag dimension. You can either re-shim it to spec which will only last so long , or you will have to get a cylinder head re-build. Measure the float level 25 with the float 11 and accelerator pump cover 12. Drain the extra oil from the oil hole 9.