page 28
Release 00 - 03/2018
Engine TRE 352
Service manual
9. IGNITION
9.2. Adjusting the air gap and checking the coil
1 - Remove the cowl (6) of the engine by un-
screwing the four nuts (7).
2 - By means of a pneumatic wrench, loosen the nut
(8) and remove the fan (9), retaining the flywheel
lock (10).
3 - Make sure that the earth cable faston (11) of the
coil (12) is not oxidized; if it is, disconnect, clean and
remount it, spraying it with a special antioxidant.
4 - Make sure that the earth cable (11) is intact.
The black spark plug cable (13) should not have
any cracks or signs of deterioration or burns which
reduce its efficiency and insulation level.
5 - Loosen the studs (14) securing the coil (12), re-
lease the brake manually and rotate the flywheel
(15) until the magnetic inserts are lined up with the
poles of the coil core.
6 - Insert a 0.35 mm thickness gauge (16) betwe-
en the flywheel (15) and the coil poles (12). Push
the coil until the poles come in contact with the
thickness gauge and secure screws (14); tighten
the screws remembering that the air gap must be
between 0,35 and 0,45 mm.
NOTE: An accurate inspection of the effi-
ciency of a coil can only be carried out in a
laboratory equipped with a oscilloscope.
To make a brief check, proceed as follows:
13
11
12
8
10
14
15
6
9
7
7
INDEX
<< BACK >>
Summary of Contents for TRE 352
Page 2: ......
