MTX-80/MTX-90 — OPERATION AND PARTS MANUAL — REV. #3 (01/04/08) — PAGE 17
Maintenance
Perform the scheduled maintenance procedures as indicated:
DAILY
■
Thoroughly remove dirt and oil from the engine and control
area.
■
Clean or replace the air cleaner elements as necessary.
Check and retighten all fasteners as necessary.
■
Check the spring box and bellows for oil leaks. Repair or
replace as needed.
EVERY 50 HOURS
■
Remove the fuel filter cap and clean the inside of the fuel
tank (Figure 12).
■
Remove and clean the spark plug, then adjust the spark gap
to 0.024~0.028 inch (0.6~0.7 mm).
EVERY 80 to 100 HOURS
■
Remove the air cleaner cover. Loosen and remove the 2
screws that hold the cover to the air cleaner assembly. If the
primary element (Figure 13) is dirty, wash it with gasoline or
kerosene. Then dip it in engine oil (SAE10W-30) and wring
the element so that 25 to 30 cc of engine oil remains on the
element.
MTX-80/MTX-90 — MAINTENANCE
Figure 13. Air Cleaner Primary Element
EVERY 200 HOURS
■
Remove the oil drain plug on foot housing (Figure 14) and
drain the oil. Refill with approximately 1.7 pt. (800 cc.) of
10W-30 SE, SF or higher grade motor oil. Oil should be
midway in sight glass. Break in oil should be changed after
first 50 hours.
Figure 12. Fuel Filter
FUEL FILTER
PRIMARY
ELEMENT
SIGHT GLASS
OIL DRAIN PLUG
OIL FILL PLUG
Figure 14. Oil Drain Plug
EVERY 2 YEARS
■
Replace the fuel line every 2 years even if there is no visible
damage.
Long Term Storage
■
Slide the throttle lever to the STOP position.
■
Drain any fuel including in the fuel hose.
■
Replace lubrication oil and apply grease to lubrication
points.
■
Cover the air intake on the air cleaner and the exhaust outlet
on the muffler.
■
Store unit indoors covered with plastic sheet in moisture
free and dust free location out of direct sunlight.
