Break In Procedure - Rotax 377 Operator's Manual

SECTION 6
for aircraft
lnstallation
(in other
appllcation8
proceea accordingly)
lhe break-in
has to be perfonned xith
the englne lnstal.led,
properly
loaded. In case of an aircraft,
anchor the plane
to tbe
grqund. Run the engine according
to the following
graph:
-7-
BREAT- I,I{ PROCEDURE
tD3h.
r !000
rurl
t , 5
I
0
2
. 2
r o I t
20
,o 1
5 o t o
t0
t16!
(.ln)
/l
Be Eure to uEe a aafe run-up area, to anchor aircraft
at
tbose polnts
appreved by the airfrane
manufacturer,
and to have
aoEeone present
yho 1a abLe to shut off
the engine instantly.
I
ltt"" thls
procedure
the 1dle has to be adjusted. Then shor!'
take-off8 can be conducted.
After a few sbort
full-load take-offs,
but not later
than 2 houra botaL running tine, the cyllnder
head
n u t a h a v e t o b e r e - t o r q u e d
t o 1 8 + 2 q N n ( 1 6 0 + 2 1 0 i n . t b , ) .
F o r
this
procedure
the cyLl.nder corl
(if
any) has to be taken off.
Engine tou8t be coLal for re-lotquing of head.
T o o l a :
S e r e w d r i y e r , i n s e r t
1 , ( E o c k e t l r r e n c h 1 J ) ,
t o r q u e w r e n c h .
N o t e : U a e a c r o s a a e q u e n c e f o t ' t i g h t e n l n g t h e n u t a .
conslder
both heads as one unj.t because they are joined
by exhaust
and Eanifold8.
Ensure that
covL bolts are torqued less than head bolts.
Ignition
polnt
rubblng bLocka wear rapldly during the fi!.at hour6
of operatl,on t1ll
they 'rpolish
in"
on the cam of crar|lahaft,
therefore
the pointr
gap lay
require adjustment after brea*-in
(betr,
8 + 10 hr8)
!
n"f"r to lgnition
tirDing procedure.
After initlal break-in adurt-
nent la pcrfotled,
gnly norrral rnaintenance Ls requiled
(see
Dalntenanec achedule).