Question about Kymco Motorcycles
Hey Scott.. not sure of the marks.. BUT the cam lobes should be opposite of the rocker arms or buckets,,, ON TDC on the COMPRESSION STROKE<<
Posted on Aug 11, 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
Rotate the engine so that No. 1 cylinder is at TDC on the
compression stroke. Check that the timing marks are aligned on the
camshaft and crankshaft pulleys. An access plug is provided in the cam
belt cover so that the camshaft timing can be checked without removal
of the cover or any other parts. Set the crankshaft to TDC by aligning
the timing mark on the crank pulley with the TDC mark on the belt
cover. Look through the access hole in the belt cover to make sure that
the timing mark on the cam drive sprocket is lined up with the pointer
on the inner belt cover.
The spring cannot be used to set belt tension; a wrench must be used on the tensioner assembly.
Posted on Nov 25, 2009
SOURCE: Corolla 1.6 VVTI motor the
With engine Crankshaft on TDC and cam timing set correctly this is the position where No. 1 cylinder is firing at the start of the power stroke. At this point No. 4 cylinder is also at TDC but is just at the end of the exhaust stroke and starting the intake stroke so the exhaust valve will be almost finished closing and the inlet valve will just be starting to open. This is referred to as the inlet and exhaust valves rocking.
Posted on Jan 05, 2011
!!! Check first if engine valves are not bended !!!
The timing chain diagram & procedures for 2000 Toyota Corrola 1.8 engine:
1. Crankshaft pulley holder - Tool No. 09213-70010/11.
2. Crankshaft pulley puller - Tool No. 09950-50012.
1. Disconnect battery earth lead.
2. Remove spark plugs to ease turning engine.
3. Turn engine in normal direction of rotation.
4. Observe tightening torques in pictures below.
5. Do NOT turn crankshaft via camshaft or other sprockets.
6. Do NOT turn crankshaft or camshaft with timing chain removed.
7. Mark position of crankshaft position (CKP) sensor before removal.
Valve timing procedures:
1. Ensure crankshaft pulley and timing chain cover TDC marks aligned .
2. Ensure teeth timing mark on each camshaft sprocket aligned.
3. 1ZZ-FE/3ZZ-FE/4ZZ-FE .
4. 2ZZ-GE  OR .
5. If not, turn crankshaft pulley 360 degrees.
6. Remove chain tensioner, tensioner rail and chain guide.
7. Check chain for wear.
Posted on Jan 22, 2011
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Hi mate didn't get any info on what bike you are timing but this procedure is simular for most and is specific for WR YZ 250 426 and 450
set piston to TDC (top dead centre)
this can be done by spinning the fly around until you can see the (i) mark
stamped on the flywheel line up with the marks on the inspection plug hole
(engine case) good idea to probe the cylinder through the spark plug hole to
confirm the flywheel mark is correct (I have seen several 426) where the TDC
mark does not give accurate TDC on piston so worth second guessing this
once TDC is set do not allow piston to
move from this point on - starting with the exhaust cam with no slack on the
cam chain the dot stamped on the cam sprocket should align with the face of
head with the cam lobes pointing outward roughly 45 degrees towards the front
wheel when this in place
you do the same with intake cam except
the cam lobe will face opposite direction outward and the should be a dot
aligning to the head
double check before you go further that
when you put your finger in the chain tension hole and you tension the cam
chain that when all slack is taken from the cam chain that your dots on both
cams align with head face and that you still have piston at TDC if all checks
out then this is timed set correct so torque all the cam caps back up install
chain tensioner and the recheck all fly wheel marks are in correct position and
piston is at TDC and the dot on each cam sprocket aligns to the head if it
doesn't then re do the process
don't be surprised if this takes a few
attempts as it takes the best of us usually at least two attempts to get all
marks to align correctly thats why best to check and double check before you
bolt it all down then you can adjust just by lifting one cam out and moving one
tooth either direction
You have little room to play with and
when you start putting chain on the cam sprockets you will find very little
extra chain length to play with you may need to wiggle tug and pull both cams
together to get them back in each time but go slow and gentle they do go in
they just need to be encouraged
I happy to elaborate on any point if
you need - good luck
May 28, 2011 | Yamaha XT250X Motorcycles
May 24, 2011 | Yamaha WR 426 F Motorcycles
Nov 01, 2009 | 1998 Honda XR 250 R
Oct 31, 2009 | 2005 Kymco Stryker 125
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