Ski-Doo Formula S 1998, Shop Manual

Page: 223 / 338

Section 06 ELECTRICAL
Subsection 05 (BATTERY)
06-05-2
1. Baking soda
Remove corrosion from battery cable terminals
and battery posts using a firm wire brush.
INSPECTION
Visually inspect battery casing for cracks or other
possible damage. If casting is damaged, replace
battery and thoroughly clean battery tray and
close area with water and baking soda.
Inspect battery posts for security of mounting.
Inspect for cracked or damaged battery caps, re-
place defective caps.
HYDROMETER TEST
1. Specific gravity 1.260
A hydrometer measures the charge of a battery in
terms of specific gravity of the electrolyte. Most
hydrometers give a true reading at 27°C (80°F).
In order to obtain correct readings, adjust the ini-
tial reading by
adding .004 points to the hydrom-
eter readings for each 5.5°C (10°F) above 27°C
(80°F) and by subtracting .004 point for every
5.5°C (10°F) below 27°C (80°F) .
This chart will be useful to find the correct read-
ing.
EXAMPLE NO. 1
Temperature below 27°C (80°F):
Hydrometer Reading: 1.250
Electrolyte temperature:
−
7°C (20°F)
Subtract .024 Sp. Gr.
Corrected Sp. Gr. is 1.226
;
WARNING
Should the battery casing be damaged,
wear a suitable pair of non-absorbent gloves
when removing the battery by hand.
;
WARNING
Battery caps do not have vent holes. Make
sure that vent tube is not obstructed.
A17E0LA
1
ELECTROLYTE
TEMPERATURE
OPERATION TO PERFORM
°C °F
38
32 100
90
add
.008
.004 to the
reading
27 80 correct reading
21
16
10
4
−
1
−
7
−
12
−
18
−
23
−
29
−
34
−
40
70
60
50
40
30
20
10
0
−
10
−
20
−
30
−
40
subtract
.004
.008
.012
.016
.020
.024
.028
.032
.036
.040
.044
.048
from the
reading
A17E0JA
1