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(7) Keep your own memo to remind you how to re-assemble the engine as it was in case the “5. Exploded view”
does not help you assembling the engine.
(8) Clean the dirt and old oil from the engine parts after disassembling, also remove the liquid gasket which has
applied on joint parts.
(9) To avoid corrosion and rust, apply oil to the disassembled parts and store them in a plastic bag.
(10) Replace the O-rings, gaskets, C-clip retainers and stainless steel wire for binding and tie wraps with new ones
after disassembling.
(11) Replace the screws and bolts if there are damages on them.
(12) Measure the parts periodically, which have operating limit size with calibrated instruments (calipers,
micrometers, dial gauges, etc.).
(13) Since the gasoline or oil could cause damage to the resin parts such as rubber and plastic, make sure there is
no any of it adheres to resin parts while working on the engine.
(14) When you remove a part like a cylinder head and a muffler, cover the hole with a plastic sheet not to dust
come inside the engine.
(15) Replace the parts according to the criterion of each part to change explained in this manual if there are
scratches, deformations, damages and cracks etc.
(16) Use new kerosene or gasoline to wash ball bearing taken out of the engine..
(17) When using an air blower to dry a ball bearing after cleaning them, hold the inner and outer race not to be
rotated by the air blow, or there is a possibility for it to rotate beyond the limited and cause damages.
(18) In case you check rotation of a ball bearing by feeling with fingers, hold the inner race and turn the outer race
to check, or vice versa.
(19) When you remove a ball bearing pressing the steel balls, check and confirm smooth rotation with feeling of
fingers. Replace it with new one if you feel it rough.
(20) Apply oil to joint surface of two parts when assembling (no special oil type designated, we recommend 2-cycle
oil for gasoline engines.)
(21)
When installing a ball bearing, in case of single side sealed type, install it with the sealed side shown outside,
in case of open type, with a model name engraved on the outer lace shown outside after assembling.
(22) When fixing parts with multiple screws, temporarily tighten all of them first, and make firm tightening starting
from the center area to outer area, next, hotter area to colder area, finally tighten the diagonal screws.
(23) After completing assembly, make sure if all the screws and bolts are tighten up in each process.
(24) There is no any basic maintenance process stated in this maintenance manual. For more information, refer
to the Federal Aviation Regulation Part 43 (13-1A and 13-2A).
http://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_43.13-1B_w-chg1.pdf
4.
OVERVIEW OF PERIODIC INSPECTION
We suggest the following periodic inspection after 25, 50, and 100-hour operation even the engine does not have
any problem.
(1)
Inspection after 25-hour operation
① Check the engine outside appearance
② Check the fuel tube
③ Check the fuel filter