Top 20 2005 Honda CRF 450 R - Page 3 Questions & Answers

sounds like you have a bad coil!!! should be mounted under tank or seat,just follow spark plug wire to coil unit. cost about $45.00 used or $85.00 new( e-bay )

They can s uck water into the carb through the overflow tubes, so try draining the carb bowl.
Also if water splashed into the ignition or kill switch it can short

There is no transmission oil ... engine and transmission share the same oil ... Depends on your riding as to the grade. You might consider joining the Honda Riders Club at http://hrca.honda.com/ for tons of information on your motorcycle and events in your area.,

Thanks for your interest in FixYa.com

when you go to the dealer to purchase the oil, just ask them. 4 stroke engine oil, is about 10W30. and the amount would be about just under 1 litre. sometimes it is stamped on the engine case, how much oil, in cc's.

this is an idle mixture screw
screw it all the way in then count the turns as you screw it back out. aprox 2 turns.

then if you can get it to idle,
as you screw it in 1\4 -1\2 turn it should start to richen and miss. as you screw it out 1\4-1\2 turn it will lean out and the revs increase and be uneven. then pick a place between the two where it idles best
a 1\4 of a turn can make a difference, and it will change slightly with a dirty aircleaner and hot or cold engine

there should be a big aluminum screw that is on the side of the carburetor turn to the right is higher idle to the left or counter clockwise is lower idle

The reason your carburetor overflows is not from an incorrect adjustment, but because the float valve is hung open by dirt or some other foreign debris. Turn the petcock off, then locate the drain screw on the bottom of the bowl and drain the fuel out. Then turn the petcock on again - and check for overflowing. If the overflow continues, the you will need to remove the float bowl, the float and float valve - clean each and reinstall to fix the problem.

hello sounds like its running hot to be pushing out of overflow, you will need water pump if its coming out of weep hole, good luck

you need to have, Headlight with high / low beam:, a tail light with brake light:, front brake light switch front lever,, rear brake light switch rear lever, front and rear turn signals,, a speedometer,, and a horn. I think thats about it.

hi,if you have run the bike low on oil,then there is every chance that you have siezed the motor,at the very least you will need to replace the piston and rings,also it is very likely that the bore has been damaged,that will also need to be repaired(it will be a nikasil coated bore)and they are easy to damage and expensive to repair.the crank will(at the very least)need to be removed and inspected,as siezing a motor will have possibly scored the crankshaft and damaged it,there is no point in putting the engine back together and running it on a damaged crank,as failure will be immenent and you will have to do it all again,sorry about this but it is going to be expensive and it makes oil very cheap insurance by comparison...hope this helps...cheers

Clutches or crank bearrings.

yes sir the seal hole should not be oblong, was the bearing bad when you took it out? sounds like the shaft has worn out the hole.

vin nos are usualy located on a metal plate riveted to the steering head or down tube however they are often stamped directly into the steering head

STAMPED IN NECK OF FRAME

Well.....id guess part of your ignition system.Why is it off?not knowing how you decided to remove it what it is or why its been removed i can only guess. Just call a dealer speak to the people in the parts dept,explain what you have and why it is your thought that that part is bad.They will probably want you to bring it to them,but they could easily tell you whats up.

1. First thing is when was the last time you had your valves adjusted
2. On cold start up twist about 15 times on your throttle, as you do that the accelerator pump in carb will shot gas in cylinder, I have a 2003 yx426 & 2005 yz450 have to do to both of them when cold out to get started

I would check your head gasket if it is not overheating. Sounds more like its overheating to me. Check to see if your radiator is plugged up and your fan is working. Check coolant level and thermostat. Maybe your lucky and find its just your radiator cap.

Put the bike on a stand supporting the bottom of the frame. Remove the seat and sidepanels. Loosen the clamp on the carb to airbox boot at the rear of the carb. Loosen the muffler clamp, remove muffler mounting bolts and pull muffler. Remove the 4 rear subframe bolts. Remove the rear subframe (leave airbox and rear fender assembled in it). You are now staring at a completely exposed rear shock. Remove the shock mount bolts and remove the shock. Measure the spring adjusted length for a future starting point when the spring is put back on. Loosen both spring pre-load adjuster spanner nuts all the way. Helps if you clean the dirt off the threads and use a little lube. Pull the spring towards the spanner nuts and remove the clip ring at the opposite end spring holder. that's it.

if you are pushing to much power it is common to break something inturnal that would in return slap the crankcase. and if the case is hit pretty hard it will crack.

Chances are the air filter is extremely wet. Air can't get through a wet filter, and if no air can flow through the carb, no gas can flow through either. Remove the filter and try again to get the engine started. I assume you drained and cleaned the gas tank already. If still no joy, remove the carb and clean it using spray carb cleaner. Remove the air screw and throttle screw and spray into the screw holes as well as all the little drill holes in the carb body. The object here is to clean out the pilot jet and idle circuit. When re-assembling the carb, put the air and throttle screws back in and turn them inward until they LIGHTLY seat. Now open each of them up one and one half turns. This is the factory setting. Please rate my answer.