Kubota WG972-E2 Workshop Manual page 109

WG972-E2, DF972-E2, WSM
Valves
1. Remove the valve caps (2).
2. Remove the valve spring collet (3), pushing the valve spring
retainer (4) by valve spring replacer (1).
3. Remove the valve spring retainer (4), valve spring (5) and valve
stem seal (6).
4. Remove the valve (7).
(When reassembling)
• Wash the valve stem and valve guide hole, and apply engine oil
sufficiently.
• After installing the valve spring collets, lightly tap the stem to
assure proper fit with a plastic hammer.
• Install a new stem seal on the valve guide (10) vertically with a jig
(9) when insert the stem seal (6). (See page G-24: "Valve Stem
Seal Replacing Tool".)
■ IMPORTANT
• Be sure stem seal (6) seats firmly against groove (8) on valve
guide.
• Use care to prevent damage to lip of stem seal and valve
stem when detach the valve spring collet by compressing
the valve spring.
• Do not change the combination of valve and valve guide.
(1) Valve Spring Replacer
(2) Valve Cap
(3) Valve Spring Collet
(4) Valve Spring Retainer
(5) Valve Spring
S-39
GASOLINE / LPG ENGINE
(6) Valve Stem Seal
(7) Valve
(8) Groove of Valve Guide
(9) Jig
(10) Valve Guide
W10211070
KiSC issued 01, 2006 A