Kubota WG1605-G-E3 Workshop Manual page 36

WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, WSM
Checking Valve Clearance
IMPORTANT
• The valve clearance must be checked and adjusted when
engine is cold.
1. Remove the cylinder head cover.
2. Align the "1TC" mark (1) on the flywheel and alignment mark (2)
on the rear end plate so that the No. 1 piston comes to the
compression top dead center.
3. Check the following valve clearance marked with " " using a
feeler gauge.
4. If the clearance is not within the factory specifications, adjust
with the adjusting screw.
5. Then turn the flywheel 6.28 rad (360 °), and align the "1TC"
mark (1) on the flywheel and alignment mark (2) on the rear end
plate so that the No. 1 piston comes to the overlap position.
6. Check the following valve clearance marked with " " using a
feeler gauge.
7. If the clearance is not within the factory specifications, adjust
with the adjusting screw.
Adjustable Cylinder
Location of Piston
When No. 1 piston is at
compression top dead
center
When No. 1 piston is at
overlap position
Intake and exhaust valve
Factory specification
clearance (cold)
NOTE
• The sequence of cylinder numbers is given as No. 1, No. 2,
No. 3 and No. 4 starting from the gear case side.
• After adjusting the valve clearance, secure the adjusting
screw with the lock nut.
(1) "1TC" Mark
(2) Alignment Mark
G-16
Intake valve Exhaust valve
1st
2nd
3rd
4th
1st
2nd
3rd
4th
0.145 to 0.185 mm
0.00571 to 0.00728 in.
A: Gear Case Side
9Y1210661GEG0045US0
GENERAL
KiSC issued 01, 2012 A