Snapper S21, SP21, SPV21, SPV21S, SPV21E Repair & Adjustments, Battery Condition

Section 4 - REPAIR & ADJUSTMENTS

WARNING

DO NOT attempt any maintenance, adjustments or service with engine and blade running. STOP engine and blade. Disconnect spark plug wire and secure away from spark plug. Engine and components are HOT. Avoid serious burns, allow sufficient time for all components to cool.

4.5.BATTERY SERVICE

4.5.1.NEW BATTERY PREPARATION

1.Remove battery from carton.

2.Place battery in a well ventilated area on a level non-concrete surface.

3.Test battery. Refer to Section “Battery Testing”. If battery needs charging, charge battery. Refer to Section “Battery Charging”.

4.Connect positive (+) lead (red) first, from battery harness to the positive terminal (+) on battery using bolt and nut plate supplied with battery. Connect negative (-) lead (black) last, to negative terminal (-) on battery using bolt and nut plate. Apply a small amount of grease over terminals to prevent corrosion. NOTE: Battery may come with harness already connected. If so, simply check to be sure terminal hardware is securely tightened.

5.Install battery into power unit.

6.Plug main harness battery harness connector

WARNING

Shield the positive terminal with terminal cover located on battery harness. This prevents metal from touching the positive terminal, which could cause sparks.

4.5.2. BATTERY SERVICE

1.Remove rear cover from mower. Refer to Section “Rear Cover Removal”.

2.Test battery. Refer to Section “Battery Testing”. If battery needs charging, charge battery. Refer to Section “Battery Charging”.

3.If battery will not accept charge or is partially charged after charging per instructions, replace with new battery.

4.5.3. BATTERY STORAGE

If Walk Behind is to be stored out of season on its rear bumper, it is recommended the battery be removed, charged and stored.

1.Remove battery.

2.Perform battery service. Refer to Section “Battery Service”.

3.Store battery in an area away from the Walk Behind on a wood surface. DO NOT STORE BATTERY ON A CONCRETE SURFACE.

4.5.4. BATTERY TESTING

Check the battery’s state of charge using a voltmeter. Remember to hook the positive lead to the battery’s positive terminal, and the negative lead to the negative terminal. Check reading against chart below. If voltage reads less than 12.80 volts, charge battery. Refer to Section “Battery Charging”.

Battery Condition

State of Charge	Digital Voltmeter
100% Charged	12.80v
75% Charged	12.40v
50% Charged	12.10v
25% Charged	11.90v
0% Charged	Less than 11.80v

4.5.5. BATTERY CHARGING

Supplied DC charger. Plug charger connector into battery harness connector. See Figure 4.10. Plug charger into wall outlet and charge battery for 48 hours. (Longer periods will not damage battery.)

Automotive-type charger. Connect battery charger to battery terminals; RED to positive (+) and BLACK to negative (-) terminal. Slow charge battery at 0.4 amps for 5-10 hours. For quick charge, charge battery at 4.0 amps for 30 minutes.

BATTERY HARNESS

CONNECTOR (CHARGER

CONNECTS HERE)

MAIN HARNESS

CONNECTORBATTERY HARNESS LEADS

BATTERY

FIGURE 4.10

WARNING

Keep all sparks, flame and fire away from area when charging battery or when handling battery. Never use “BOOST” chargers on the battery.

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