1997-2001 Honda CR250 – Reed Valve Service

How To Service The Reed Valves On Your 1997 – 2001 Honda CR250

The Tools You Will Need Are:

The Parts You Will Need Are:

If you don’t have your reeds or gasket yet, you can get yours HERE (Link to RockymountainATVMC.com)

Servicing your reed valve will cost around $20 for OEM parts, and take around half an hour to complete.

Start with your bike on a stand with the carburetor removed.

Reed Valve Removal:	(Click To Enlarge)
Remove the carburetor boot mounting bolts, then pull the reed valve assembly and gasket.
Make sure to stuff a shop towel in the reed valve housing to keep junk out of your crankcase.

Clean & Inspect Reed Valve Assembly:
Clean the reed valve housing inside and out with a PLASTIC scraper.
Inspect the reeds for any obvious damage. If you find any, replace your reeds. Inspect the reed valve body and reed stoppers.
If you find a missing screw, you might want to check out your crankcase.
If your reeds look good, use your feeler gauge to measure the clearance between the reed ends and the body. Maximum Clearance: 2mm
These valves are within spec, but since I don’t know when they were serviced last, I am going to install a set of new pedals.
Remove the reed stopper mounting screws, discard the old pedals, and clean the body.
Align your new pedals, and install the screws with threadlocker. I find it easier to thread the screws a few turns, then pull each one out individually to apply threadlocker.
Make sure the threadlocker does not get on the pedals.

Reed Valve Installation:
Remove the shop towel from the reed valve housing, and install the new reed valve gasket, with the tacky side in.
Install the reed valve assembly with the tabbed side facing up.
Make sure the clutch guide is mounted on the top left side of the assembly.
Install the mounting bolts finger tight, then gradually tighten them in a criss-cross pattern.