Cub Cadet 8454 Service Manual page 60

CHAPTER 2 8454
2) Valve clearance
1. Remove the cylinder head cover and the timing win-
dow cover on the flywheel housing and all glow
plugs.
2. Turn the flywheel and align the 1 TC or 1.4 TC mark
mark with the timing mark of window on the flywheel
housing to position the 1st cylinder valves at the top
head center during compression.
3. Measure the clearance at the valves marked with
in the table below with a feeler gauge.
4. If the clearance is not within the factory
specifications, turn the adjusting screw to adjust.
5. Turn the flywheel just one turn to position the 1st
cylinder valves at the top head center during overlap.
6. Measure the clearance at the valves marked with
in the table below with a feeler gauge.
7. If the clearance is not within the factory
specifications, adjust it.
Valve Factory 4A220
clearance spec.
4A200T
Cylinder NO. 1
Valve IN. EX. IN. EX.
Checking
b. Disassembling and Assembling
1) Cylinder head cover, glow plugs and fuel
overflow pipes.
1. Remove the injection pipes and over flow pipe.
2. Remove the glow plugs.
3. Remove the injection nozzles and gaskets, heat
seals.
4. Remove the cylinder head cover.
(When reassembling)
• Check that the cylinder head cover gasket is not
defective.
• Tighten the cylinder head cover cap nuts in several
steps.
2-38
K&T Saw Shop 606-678-9623 or 606-561-4983
www.mymowerparts.com
In. : 0.25 mm 0.0098 in.
Ex. : 0.30 mm 0.0118 in.
In. : 0.15 mm 0.0059 in.
Ex. : 0.15 mm 0.0059 in.
2 3 4
IN. EX. IN. EX.
(1) Injection Nozzle
(2) Gasket
569W254A
569W255B
569W256A
(3) Heat Seal
D569-W03 May-2003