05-E2B, 05-E2BG, WSM G GENERAL Battery Specific Gravity 1. Check the specific gravity of the electrolyte in each cell with a hydrometer. 2. When the electrolyte temperature differs from that at which the hydrometer was calibrated, correct the specific gravity reading following the formula mentioned in (Reference) . 3. If the specific gravity is less than 1.215 (after it is corrected for temperature), charge or replace the battery. 4. If the specific gravity differs between any two cells by more than 0.05, replace the battery. NOTE Q Hold the hydrometer tube vertical without removing it from the electrolyte. Do not suck too much electrolyte into the tube.
Allow the float to move freely and hold the hydrometer at eye level. The hydrometer reading must be taken at the highest electrolyte level. (Reference) Specific gravity slightly varies with temperature. To be exact, the specific gravity decreases by 0.0007 with an increase of 1 °C (0.0004 with an increase of 1 °F) in temperature, and increases by 0.0007 with a decreases of 1 °C (0.0004 with a decrease of 1 °F). Therefore, using 20 °C (68 °F) as a reference, the specific gravity reading must be corrected by the following formula : - Specific gravity at 20 °C = Measured value + 0.0007 Ч (electrolyte temperature :
20 °C) - Specific gravity at 68 °F = Measured value + 0.0004 Ч (electrolyte temperature : 68 °F) At an electrolyte temperature of 20 °C (68 °F) (a) Good (b) Bad (c) Bad W1012763 [9] CHECK POINTS OF EVERY YEAR Replacing Air Cleaner Element 1. Remove used air cleaner element. 2. Replace new air cleaner element. NOTE Q The air cleaner uses a dry element. Never apply oil to it. Do not run the engine with filter element removed. W1020554 G-18 KiSC issued 06, 2011 A Specific Gravity State of Charge 1.260 Sp. Gr. 100 % Charged 1.230 Sp. Gr. 75 % Charged 1.200 Sp. Gr. 50 % Charged 1.170 Sp. Gr. 25 % Charged 1.140 Sp. Gr. Very Little Useful Capacity 1.110 Sp. Gr. Discharged