Mi-T-M HMT-4004-0MGV Manual Del Operador página 23

STORAGE & MAINTENANCE
SPECIFIC MAINTENANCE:
EVAPORATIVE EMISSION COMPONENTS:
The unit you have purchased includes the following components that are in compliance with ALL current California
Air Resources Board Evaporative Emission Standards;
1. Fuel Hose
2. Fuel Hose Fittings
These components should be inspected on a daily basis for cracks, leaks, and abnormal wear. If cracking, leaks or
abnormal wear has occurred, the components should be replaced immediately.
ENGINE: The engine instruction manual accompanying your unit lists the specific procedures for maintenance on the
engine. Following the engine manufacturer's recommendations will extend engine life.
PUMP: Change the pump oil after the first 50 hours of operation. After initial change, the manufacturer recom-
mends changing the oil every three months or at 250 hour intervals. If oil appears dirty or milky, changes may be
required in greater frequency. Use SAE20 or 30 non-detergent pump oil and fill only to the center of the oil sight
glass. DO NOT overfill.
NOZZLE: Water flow through the spray nozzle will erode the orifice, making it larger, resulting in a pressure loss.
Nozzles should be replaced whenever pressure is less than 85% of the maximum. The frequency of replacement will
depend upon such variables as mineral content in the water and number of hours the nozzle is used.
MAINTENANCE-EVERY 3 MONTHS:
CHANGE WATER PUMP OIL: Ensure unit is off. Change the pump oil after the first 50 hours of operation. After
initial change, every 3 months or 500 hour intervals are recommended. If oil appears dirty or milky, changes may
be required in greater frequency. Use SAE20 or 30 non-detergent pump oil and fill only to the center of the oil sight
glass. DO NOT overfill.
REPLACE HIGH PRESSURE NOZZLE: Water flow through the spray nozzle will erode the orifice, making it larger,
resulting in a pressure loss. Nozzles should be replaced whenever pressure is less than 85% of the maximum. The
frequency of replacement will depend upon such variables as mineral content in the water and number of hours the
nozzle is used.
BELT INSPECTION: To maintain peak performance of your pressure washer, it may be necessary to adjust the belt
tension on occasion. Follow the procedure outlined below.
1. Remove the belt guard and loosen the four bolts on the pump (Reference A).
2. Turn the cap screw (Reference B) clockwise until a 1/2 inch belt deflection is noticed between the pulleys.
3. Tighten the bolts. (Reference A)
4. Put a straight edge across both pulleys. If necessary, loosen one set of pulley screws and adjust in or out to properly
align. Tighten the pulley screws and check the tension again.
5. Replace the beltguard and tighten the fasteners securely.
BELT TENSION ADJUSTMENT
BURNER AIR ADJUSTMENT: The air shutter has been factory preset for proper operation between sea level and
2000 feet elevation at standard conditions (60°F ambient water and air temperatures). In colder temperatures or
higher altitudes, it may be necessary to adjust the air supply to the combustion chamber. This adjustment will maxi-
mize burner efficiency and avoid inefficient operation or excessive sooting of the heat exchanger coil. A smoke spot
test is recommended during any air shutter and band adjustment. If you do not have the equipment to perform a
smoke spot test, follow the procedures listed below.
HMT-4004-0MGH Operator's Manual 23