Section 04 ENGINE (2-STROKE)
Subsection 01 (LEAK TEST)
Check for leak through counterbalancing shaft seal
toward air compressor (DI engines). Air bubbles in
lowest fitting (oil return line) underneath compres-
sor indicates a seal leakage.
If the above mentioned components are not leak-
ing, block both oil hoses of the rotary valve shaft
(if so equipped) using hose pinchers.
NOTE: If leakage stops at this point, proceed with
ROTARY VALVE SHAFT testing (if so equipped).
If there is still some leakage, remove the PTO fly-
wheel to verify outer seal.
If no leak is found on the PTO side outer seal,
remove magneto flywheel and verify crankshaft
outer seals.
ProceedwiththeROTARYVALVESHAFTtesting
(if so equipped) if the crankshaft outer seals are
not leaking.
Rotary Valve Shaft (if so equipped)
NOTE: It is mandatory to drain the injection oil
from the rotary valve shaft.
Block oil return hose of the rotary valve shaft with
ahosepincher.
F01B31A
1
717 ENGINES
1. Oil return hose blocked with hose pincher
F01B33A
1
787 RFI ENGINES
1. Oil return hose blocked with hose pincher
Install pump with reducer and nipple to the oil sup-
ply hose of the rotary valve shaft.
F01B32A
1
717 ENGINES
1. Pump with reducer and nipple
smr2004-Complete Line Up 67
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