BRP Outlander 400 EFI 2008, Руководство по обслуживанию

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Section 03 ENGINE
Subsection 09 (CYLINDER HEAD/CYLINDER)
GENERAL
To work on cylinder head, cylinder and piston, the
engine removal is not necessary.
Always place the vehicle on level surface.
NOTE: For a better understanding, the many illus-
trations are taken with engine out of vehicle.
When diagnosing an engine problem, always per-
form a cylinder leak test. This will help pinpoint a
problem.
Always disconnect BLACK (-) cable from the bat-
tery, then RED (+) cable before working on the en-
gine.

WARNING
Always disconnect battery or starter cables
exactly in the specified order, BLACK (-) cable
first.
During assembly/installation, use the torque val-
ues and service products as in the exploded
views.
Clean threads before applying a threadlocker. Re-
fer to
SELF-LOCKING FASTENERS and LOCTITE
APPLICATION at the beginning of this manual for
complete procedure.

WARNING
Torque wrench tightening specifications
must strictly be adhered to.
Locking devices (e.g.: locking tabs, elastic
stop nuts, self-locking fasteners, cotter pin,
etc.) must be installed or replaced with new
ones where specified.
If the efficiency of
a locking device is impaired, it must be re-
newed.
When disassembling parts that are duplicated in
the engine, (e.g.: valves), it is a strongly recom-
mended to note their position (PTO, MAG side)
and to keep them as a “group”. If you find a de-
fective component, it would be much easier to
find the cause of the failure among its group of
parts (e.g.: you found a worn valve guide. A bent
spring could be the cause and it will be easy to
know which one among the springs is the cause
to replace it if you grouped them at disassembly).
Besides, since used parts have matched together
during the engine operation, they will keep their
matched fit when you reassemble them together
within their “group”.
Intake port/air filter contaminated (clogged) with
dirt, sand, etc. (leads to worn valves, piston rings
and finally to leak of power).
CAUTION: In case of piston rings and/or valve
replacement, always clean the whole engine
and change oil and oil filter.
MAINTENANCE
VALVE ADJUSTMENT
NOTE: Check and adjust valve clearance only
when engine is cold.
Remove valve cover.
Lock crankshaft to TDC compression (refer to
CRANKCASE/CRANKSHAFT
section).
Using feeler gauge, check the valve clearance.
VALVE CLEARANCE
EXHAUST
0.11 to 0.19 mm
(.0043 to .0075 in)
INTAKE
0.06 to 0.14 mm
(.0024 to .0055 in)
If the valve clearance is out of specification per-
form the valve clearance adjustment.
NOTE: Use mean value of exhaust/intake to en-
sure a proper valve adjustment.
Hold the adjusting screw at the proper position
and torque the locking nut.
vmr2007-036-004_a
1. Adjustment screw
2. Locking nut
3. Feeler gauge
Repeat the procedure for each valve.
Before installing valve cover, recheck all valve ad-
justments.
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