MAINTENANCE TIMETABLE

DEADLINES

INSPECTIONS

TO REPLACE

DURING AND AFTER RUNNING-IN by sight all the screws and the seal of the motor head after the removal of the air conveyer.  

every 5 hours

wpe2.gif (4598 byte) all the screws  (you can reach the 4 screws inside the air conveyer by removing the stoppers)

 

25 hours

  • Guarding net and propeller: inspections

  • Inside cleaning of the pressurized gas pipe (only for float-type carburetor)

  • muffler elastic bearing

 

deadlines

TO CHECK

TO REPLACE

50 hrs.

 

  • intake blades (elasticity and tightness)

  • clutch diameter and clearance

  • clutch bell (minimum thickness 1,2 mm)

  • cleanliness of the hollow of the clutch bell

  • decarbonizing of the motor-head and muffler

  • holding of the piston ring

  • SPARK PLUG

 

100 hrs.

 seal of the crankshaft oil splash guard

  • cage of the piston roller-bearing

  • piston ring

200 hrs.

ball bearings

  • piston

  • oil splash guards

one year (even if the engine has not been used)
  • gas pump and carburetor diaphragms tightness

  • crankshaft oil splash guards

  • all plastic parts 

 

gas pipes

DEADLINES

INSPECTIONS

TO REPLACE

 

 

 

LOCKING TORQUES

bolts and knots

Metric

wrench

torque (N.m)

torque (lbf.in)

motor head studs / cylinder

M6

hexagon wrench 10

FIRST ASSEMBLING : 9

MAINTENANCE : 8

do check for the symmetric fastening.

80

72

prop

M6 socket wrench (Allen) 5/
hexagon wrench  10

10 / 13

go to prop setting

90 / 120

engine elastic mountings

 

M6 socket wrench (Allen) 5 10

special directions : do not twist the mountings  while screwing, do not use screws longer that the standard ones, the screw thread must not enter more than 6 mm 

90
M8 hexagon wrench 13 or socket wrench (Allen) 6 12

special directions : do not twist the bearings while screwing, do not use screws longer that the standard ones, the screw thread must not enter more than 6 mm .

110

engine mountings

miscellaneous

M4

socket wrench (Allen) 3

2,5 / 3

miscellaneous

M5

socket wrench (Allen) 4

4 / 5

5 mm  fastening for diaphragm carburetor and plastic flange 

socket wrench (Allen) 4

4

6 mm diameter

socket wrench (Allen) 5

8 mm diameter

socket wrench (Allen) 6

crankshaft knots (clutch) hexagon wrench  17 45
right screw thread locking on the cone
400
crankshaft knots (starter) hexagon wrench  17 45
right screw thread
400

muffler flange

hexagon wrench  10  hand fasten until the compression of the spring (5) than unfasten half a turn.

for each bolt/nut always use 1 or 2 drops of medium strength screw glue

 

 

Spare parts main features

spark plugs

NGK B9ES
NGK B9EG
or similar

for low temperatures
NGK B10ES
NGK B10EG
or similar
for high temperatures

starting string

 

Polyamide 3,5 mm, length 110 cm

 string extension for kick starter 

Polyamide 3,5 mm, length 130 cm

net straining rope coated Kevlar 1,3 mm
gas pipe 6mm 55cm, 4mm 20 cm
we strongly advise the use of original spare parts
gas filter Fiaam FT 4874 logofiaam.gif (1222 byte) 20 micron

gas wire

1,2 mm

safety gas wire

2 mm o 1,2 mm

 

 

Diaphragm carburetor maintenance

PULCARB.jpg (16118 byte)The diaphragm carburetor is provided with an internal filter that may get blank and cause carburetion problems that shows with power losses 

To clean it it is compulsory to open the carburetor from the fuel entering side. In order to do it you must remove the aluminum lid held by four screws

You do clean it by a spout of air or by a fuel wet soft brush.

Do not remove the filter, clean it while leaving on its seat.

Do pay attention to cover with your finger about half of the filter housing, as shown in the picture, it may slip out.

For settings and modifications go to carburation