Fuel Mixture Check - BOMBARDIER Johnson 90 Service Manual

PERIODIC MAINTENANCE
MAINTENANCE ANO TUNE-UP PROCEDURES
BATTERY SOLUTION LEVEL CHECK
Battery solution level should be between UPPER level and
L0WER level. lf level is low, add distilled water only.
l~CAUTION
1
Once the battery has been initially serviced, NEVER add
diluted sulfuric acid, or you will damage the battery. Fol­
low the battery manufacturer's instructions for specific
maintenance procedures.
BATTERY SOLUTION GRAVITY CHECK
Measure gravity of battery solution using hydrometer.
Battery solution gravity: 1.28 at 20ºC
lfib
Hydrometer
Bolt and Nuts
lnspect initially after 10 hours (1 month) and every 100
hours (6 months).
-UPPER LEVEL -
-LOWER LEVEL -
,-
· · · f )
Check that all bolts and nuts listed below are tightened to
their specified torque.
THREAD
TIGHTENING TORQUE
ITEM DIAMETER N-m kg-m lb-ft
Cylinder head cover bolt 6mm 11 1.1
a.o
Flywheel bolt
16mm 245 24.5
177.0
Power unit mounting bolt
8mm 23 2.3 16.5
10mm
50 5.0
36.0
Clamp bracket shaft nut 22mm
43
4.3 31.0
Lower mount bolt / nut 12mm
60 6.0
43.0
Gearcase bolt 10mm
55
5.5 40.0
Propeller nut 18mm
55
5.5 40.0
Fuel Mixture Check (0
2
Feedback)
[ Perform every 2 years.
To perform fuel mixture check (0
2
feedback) operation, use
personal computer and Diagnostic System software. For fuel
mixture check (0
2
feedback) operation, refer to "Bombardier
Diagnostic System 0peration Manual".
NOTE:
See "0
2
FEEDBACK SYSTEM" section on page 3-30 befare
starting 0
2
feedback operation.
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