Nilfisk-ALTO 91WS manual Service Chart, EVERY 8 HOURS or DAILY, EVERY 25 HOURS, EVERY 50 HOURS

SERVICE CHART

SERVICE CHART

The following is a guide for servicing and maintaining your 91WS Walkbehind Sweeper. For best machine performance, the following operation checks should be made at these intervals. For service assistance, consult your Clarke/American-Lincoln distributor. For best results, replace worn or damaged parts with genuine Clarke/ American-Lincoln parts.

EVERY 8 HOURS or DAILY:
1.	Recharge batteries and check electrolyte level.	B
2.	Check fuel level.	G, LP
3.	Check engine oil level (at 5 hours).	G, LP
4.	Clean cooling fins and entire engine.	G, LP

5.Check all flaps and gaskets for wear or damage.

6.Check sweeping brooms for wear or damage.

7.Check panel filter (clean side) for dust leak.

8.	Check for LPG odor at connections.	LP
EVERY 25 HOURS:
9.	Change crankcase oil (heavy use).	G, LP
10.	Clean and re-oil foam pre-cleaner air filter (Dual Element).	G, LP
11.	Check all belts and chains for wear and alignment.
EVERY 50 HOURS:
12.	Change crankcase oil (normal use).	G, LP
13.	Check battery electrolyte level.	G, LP

14.Lubricate the caster wheel bearings.

15.Lubricate the drive chains.

EVERY 100 HOURS:
16.	Lubricate all moving joints.
17.	Clean or replace the spark plug and reset the gap.	G, LP
18.	Replace fuel filter.	G
19.	Clean and/or replace engine air filter paper cartridge (dual element).	G, LP

20.Remove, clean, inspect, and reinstall battery cable connections.

21.Inspect side broom gear box and repack if necessary.

22.Check all fasteners for tightness.

EVERY 250 HOURS:
23.	Remove combustion deposits.	G, LP
24.	Inspect LP fuel filter and change if needed.	LP

Note: Complete service information for the Briggs and Stratton engine is provided in the “ Engine Owners’ Manual” which is supplied as part of this manual. Briggs & Stratton Form No. 272848-1/94

G = GAS

LP = LPG

B = BATTERY

1-20	American-Lincoln
	91 WS