Husqvarna 4421-G/GX/GXL, 4421-D/DX/DXL owner manual Periodic Service Schedule Regular Interval

Periodic Service Schedule

PERIODIC SERVICE SCHEDULE

REGULAR INTERVAL	SERVICE
	Pre-Operation and Daily Safety Checklist	See Pre-Operation and Daily Safety
Daily service by owner		Checklist on page 22.
	Performance Inspection	See Performance Inspection on page 23.
		Check engine oil level; add if necessary. See
		Engine Oil Level Check on page 39.
	Engine
		Diesel vehicles: Check engine coolant; add if
		necessary. See Engine Coolant Level Check
		on page 46.
Daily service by owner or trained technician
		Diesel vehicles: Drain water from fuel filter.
	Fuel filters	See Draining Water from Fuel Filter on
		page 49.
		Check brake fluid; add if necessary. Check
	Brakes	brake pedal for proper operation. See
		Performance Inspection on page 23.
		Check engine circulating air passage; visually
		inspect unshrouded area around engine
	Engine	exhaust for grass and debris and clean if
		necessary. Diesel vehicles: Check for grass
		and debris around the radiator.
	Tires	Check air pressure and adjust if necessary.
Monthly service by owner or trained		See Vehicle Specifications on page 56.
technician		Check lubricant levels. Add if necessary.
	Transmission and differentials	See Lubrication Level Check for Front
		Differential, Transmission, and Rear
		Differential on page 44.
	General vehicle	Wash engine compartment and underside of
		vehicle. Do not wash engine when hot.
		Clean terminals and wash dirt from casing;
	Battery	check electrolyte level. Add distilled water if
		necessary. See page 50.
		Check and adjust if necessary. See Steering
	Front wheel alignment and toe-in	and Front Suspension Section in the
		appropriate maintenance and service
		manual.
Semiannual service by trained technician	Electrical wiring and connections	Check for tightness and damage.
only (or every 50 hours of operation,		Inspect master cylinder, brake lines, and hoses
whichever comes first)
		for damage or leakage.
		Check park brake cables for damage; replace
	Brake system	if necessary.
		Check brake pads and discs; replace if
		necessary. For brake wear-in procedure,
		see Hydraulic Brakes in the Pre-Operation
		and Daily Safety Checklist on page 22.
		See also Brake System Section in the

Page 34 HUV 4421 Owner’s Manual