3
2. Loosen top 3 bolts each side of the central gear box with an 8mm
hex key wrench. Then mount gear box cover with the front bolt
only, allowing the cover to pivot.
Note-sometimes if welds are too large attaching the arms to the
gear box you may have to grind the edges of the cover for it to fit
properly.
3.
Remove the 2 bolts from rotor housing on each side and pivot the gear
box cover forward so that support can be installed with the bolt holes
in the cover aligned on top. Put the 2 bolts back in the flange that
goes over the rotor housing.
There are three
bolt holes on this
flange. In this
step, only
replace front bolt
so that it can
pivot forward in
next step. Then
replace other two
bolts
Summary of Contents for MH 420
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