Question about 2005 Honda CBF 250
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The answer is as follows:
Looking from the RH side of the bike, the LH (inlet) camshaft sprocket has 2 marks "IN" and "EX" on opposite sides of the sprocket. The "IN" mark needs to be on the LH side i.e. at the rear of the bike. For the RH (exhaust) camshaft sprocket, the "EX" mark needs to be on the RH side i.e. at the front of the bike. Both marks need to be flush with the top of the cylinder casing.
Posted on Jun 20, 2017
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Posted on Jan 02, 2017
SOURCE: Honda CRF 100 timing
Turn the motor over clockwise until the punch mark on the gear lines up with the arrow mark on the side case. Check to be sure that the cam lobes are facing to the rear of the bike, if they are pointing toward the front keep going until they face back and the punch mark aligns up with the mark on the case.
Check the cam gear to make sure the two marks on the gear are level with the surface of the head.
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Posted on Jan 29, 2009
SOURCE: need help timing 1987 honda
Backfiring through the carb isn't a timing issue unless you're firing at BDC (180 degrees out).
or have bad/missing/cracked piston rings / hole in the piston.
I mean, correct me if I am wrong, but that thing IS a 2 stroke, right?
Posted on Mar 15, 2011
SOURCE: i need help putting my
I can email a PDF of the page in the factory service manual that shows how to time the engine. You will need a timing light. The file has two line art drawings and two photos. I can call tomorrow to get your email address. I can then email you and attach the PDF file. Below is what it looks like. The Fixya system doesn't handle PDF files. Please rate my answer. Thanks. .
Posted on Jun 10, 2011
Tips for a great answer:
Timing the Cam to the Crank
There are several ways to time the cam to the crank. Be sure to check the manual before you install the timing chain or belt.
If the old parts are available, carefully compare the new gears or sprockets with the old ones. Check the keyway and timing marks just in case there might have been an error made in manufacturing. Sprockets are sometimes stamped backward. Its much better to find the problem during assembly, rather than waiting until problems show up after reassembly and reinstallation.
Maintaining Valve Timing
During a valve job, it is essential to keep the timing chain or belt in place to maintain correct valve timing. Position the number one cylinder at TDC. Some overhead cam engines use a single long chain for a cam drive. The chain can be wedged against its guides with a tapered block of wood.
the chain tensioner on some ohc engines must be wedged to keep the chain in position during cylinder head removal. courtesy of nissan motors.
Some engines have a lower and upper chain. These engines do not require special attention to wedging the chain. Be sure to look for hidden head bolts and check the repair manual before removing the OHC head.
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