Farmall 90 Manual page 91

6. Remove the two retaining bolts (3) and the cen-
tral tappet inspection cover (2) together with the
engine vapor intake pipe (1) and the cover base
seal.
7. Remove the retaining bolt and the rear tappet in-
spection cover (1) together with the cover base
seal.
8. After taking off the covers, adjust the clearance
between the rocker arms and valves using an Al-
len wrench (1), box wrench (2) and feeler gauge
(3).
The working clearance should be:
-- inlet valves = 0.30 ± 0.05 mm
(0.0118 ± 0.019 in)
-- exhaust valves = 0.55 ± 0.05 mm
(0.0216 ± 0.0019 in).
SECTION 10 - - ENGINE - - CHAPTER 1
MIF1016A
91
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