Mooney M20J 1978, Pilot Operating Handbook, Page: 56 / 164

Upon r e a c h i n g c r u i s e altitude, allow a c c e l e r a t i o n t o
c r u i s e a i r s p e e d , t h e n t r i m the a i r c r a f t for level flight,
reduce manifold p r e s s u r e and
R P M
t o d e s i r e d c r u i s e
power, and c l o s e t h e cowl flaps. The cowl f l a p s should be
partially opened (control pulled aft
t h r e e
inches)
i f
n e c e s s a r y , t o maintain the oil and cylinder
head t e m p e r a t u r e s within the n o r m a l operating r a n g e .
When c r u i s i n g a t percent power o r l e s s , lean t h e
mixture after power
is
established i n a c c o r -
dance with one of t h e following
A . Leaning using exhaust g a s gage (EGT)
(if installed)
t h e mixture until t e m p e r a t u r e peaks on
t h e indicator.
-
Enrich mixture (push
m i x t u r e
forward) indicator
r m o r e below peak.
MI XTURE
B e s t power mixture will r e s u l t in a
speed i n c r e a s e , a n i n c r e a s e
and
a
reduction in r a n g e .
2. Changes i n altitude and power r e q u i r e
t h e peak t o be rechecked and m i x t u r e
r e - s e t .
Leaning without exhaust g a s t e m p e r a t u r e gage
Slowly move control lever aft f r o m
" Full position toward lean position.
Continue leaning until slight l a s s of power is
noted ( l o s s of power
may or may not b e a c c o m -
panied by roughness).